PO4 postcode district: Portsmouth and around

PO4 is a postcode district in England, with 740 postcodes in use in 3 sectors. It has postcodes in Portsmouth. Its council is Portsmouth.

Postcodes in use
740
Sectors
3
Council
Portsmouth
Places
Portsmouth

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in PO4, by flood risk

Map of every postcode in PO4, by flood risk Of the 740 postcodes in PO4 that ONS places, 74 have a home or business at high risk, 10 are at medium risk at worst, 45 are at low risk at worst, 5 are at very low risk only and 606 are not on the Environment Agency's at-risk list. 4 groups of postcodes at high or medium risk are outlined: 46 postcodes at high or medium risk; 19 postcodes at high or medium risk; 7 postcodes at high or medium risk; 6 postcodes at high or medium risk. Places named: Eastney and Craneswater, Milton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. PO4 0AA: not on the flood risk listPO4 0AB: not on the flood risk listPO4 0AD: not on the flood risk listPO4 0AE: not on the flood risk listPO4 0AG: not on the flood risk listPO4 0AH: not on the flood risk listPO4 0AJ: not on the flood risk listPO4 0AL: not on the flood risk listPO4 0AR: not on the flood risk listPO4 0AS: not on the flood risk listPO4 0AT: not on the flood risk listPO4 0AU: not on the flood risk listPO4 0AW: not on the flood risk listPO4 0AX: not on the flood risk listPO4 0AY: not on the flood risk listPO4 0AZ: not on the flood risk listPO4 0BA: not on the flood risk listPO4 0BB: not on the flood risk listPO4 0BG: not on the flood risk listPO4 0BH: not on the flood risk listPO4 0BJ: not on the flood risk listPO4 0BL: not on the flood risk listPO4 0BN: not on the flood risk listPO4 0BS: not on the flood risk listPO4 0BT: not on the flood risk listPO4 0BZ: not on the flood risk listPO4 0DA: not on the flood risk listPO4 0DB: not on the flood risk listPO4 0DF: not on the flood risk listPO4 0DG: not on the flood risk listPO4 0DH: not on the flood risk listPO4 0DJ: not on the flood risk listPO4 0DL: not on the flood risk listPO4 0DN: not on the flood risk listPO4 0DP: not on the flood risk listPO4 0DQ: not on the flood risk listPO4 0DR: not on the flood risk listPO4 0DS: not on the flood risk listPO4 0DT: not on the flood risk listPO4 0DU: not on the flood risk listPO4 0DW: not on the flood risk listPO4 0DX: not on the flood risk listPO4 0DY: not on the flood risk listPO4 0DZ: not on the flood risk listPO4 0EA: not on the flood risk listPO4 0EB: not on the flood risk listPO4 0ED: not on the flood risk listPO4 0EF: not on the flood risk listPO4 0EG: not on the flood risk listPO4 0EJ: not on the flood risk listPO4 0EL: not on the flood risk listPO4 0EP: not on the flood risk listPO4 0ER: not on the flood risk listPO4 0ES: not on the flood risk listPO4 0ET: not on the flood risk listPO4 0EU: not on the flood risk listPO4 0EY: not on the flood risk listPO4 0EZ: not on the flood risk listPO4 0HA: not on the flood risk listPO4 0HB: not on the flood risk listPO4 0HD: not on the flood risk listPO4 0HF: not on the flood risk listPO4 0HG: not on the flood risk listPO4 0HL: not on the flood risk listPO4 0HN: not on the flood risk listPO4 0HP: not on the flood risk listPO4 0HQ: not on the flood risk listPO4 0HR: not on the flood risk listPO4 0HS: not on the flood risk listPO4 0HT: not on the flood risk listPO4 0HU: not on the flood risk listPO4 0HX: not on the flood risk listPO4 0HY: not on the flood risk listPO4 0HZ: not on the flood risk listPO4 0JA: not on the flood risk listPO4 0JB: not on the flood risk listPO4 0JD: not on the flood risk listPO4 0JE: not on the flood risk listPO4 0JF: not on the flood risk listPO4 0JJ: not on the flood risk listPO4 0JP: not on the flood risk listPO4 0JR: not on the flood risk listPO4 0JT: not on the flood risk listPO4 0JW: not on the flood risk listPO4 0JZ: not on the flood risk listPO4 0LA: not on the flood risk listPO4 0LB: not on the flood risk listPO4 0LD: not on the flood risk listPO4 0LE: not on the flood risk listPO4 0LF: not on the flood risk listPO4 0LG: not on the flood risk listPO4 0LH: not on the flood risk listPO4 0LJ: not on the flood risk listPO4 0LL: not on the flood risk listPO4 0LN: not on the flood risk listPO4 0LP: not on the flood risk listPO4 0LQ: not on the flood risk listPO4 0LR: not on the flood risk listPO4 0LS: not on the flood risk listPO4 0LT: not on the flood risk listPO4 0LU: not on the flood risk listPO4 0LW: not on the flood risk listPO4 0LX: not on the flood risk listPO4 0LY: not on the flood risk listPO4 0LZ: not on the flood risk listPO4 0NB: not on the flood risk listPO4 0ND: not on the flood risk listPO4 0NF: not on the flood risk listPO4 0NG: not on the flood risk listPO4 0NL: not on the flood risk listPO4 0NP: not on the flood risk listPO4 0NS: not on the flood risk listPO4 0NT: not on the flood risk listPO4 0NW: not on the flood risk listPO4 0NX: not on the flood risk listPO4 0NY: not on the flood risk listPO4 0PA: not on the flood risk listPO4 0PB: not on the flood risk listPO4 0PD: not on the flood risk listPO4 0PH: not on the flood risk listPO4 0PP: not on the flood risk listPO4 0PR: not on the flood risk listPO4 0PS: not on the flood risk listPO4 0PU: not on the flood risk listPO4 0PW: not on the flood risk listPO4 0PX: not on the flood risk listPO4 0PY: not on the flood risk listPO4 0QA: not on the flood risk listPO4 0QD: not on the flood risk listPO4 0QE: not on the flood risk listPO4 0QN: not on the flood risk listPO4 0QU: not on the flood risk listPO4 0QX: not on the flood risk listPO4 8AA: not on the flood risk listPO4 8AB: not on the flood risk listPO4 8AD: not on the flood risk listPO4 8AE: not on the flood risk listPO4 8AF: not on the flood risk listPO4 8AG: not on the flood risk listPO4 8AH: not on the flood risk listPO4 8AJ: not on the flood risk listPO4 8AL: not on the flood risk listPO4 8AN: not on the flood risk listPO4 8AP: not on the flood risk listPO4 8AQ: not on the flood risk listPO4 8AR: not on the flood risk listPO4 8AS: not on the flood risk listPO4 8AT: not on the flood risk listPO4 8AU: not on the flood risk listPO4 8AW: not on the flood risk listPO4 8AY: not on the flood risk listPO4 8AZ: not on the flood risk listPO4 8BA: not on the flood risk listPO4 8BB: not on the flood risk listPO4 8BD: not on the flood risk listPO4 8BF: not on the flood risk listPO4 8BG: not on the flood risk listPO4 8BH: not on the flood risk listPO4 8BP: not on the flood risk listPO4 8BQ: not on the flood risk listPO4 8BU: not on the flood risk listPO4 8BW: not on the flood risk listPO4 8BY: not on the flood risk listPO4 8BZ: not on the flood risk listPO4 8DA: not on the flood risk listPO4 8DB: not on the flood risk listPO4 8DD: not on the flood risk listPO4 8DE: not on the flood risk listPO4 8DF: not on the flood risk listPO4 8DG: not on the flood risk listPO4 8DH: not on the flood risk listPO4 8DJ: not on the flood risk listPO4 8DL: not on the flood risk listPO4 8DP: not on the flood risk listPO4 8DQ: not on the flood risk listPO4 8DR: not on the flood risk listPO4 8DS: not on the flood risk listPO4 8DT: not on the flood risk listPO4 8DU: not on the flood risk listPO4 8DX: not on the flood risk listPO4 8DY: not on the flood risk listPO4 8EA: not on the flood risk listPO4 8EF: not on the flood risk listPO4 8EG: not on the flood risk listPO4 8EH: not on the flood risk listPO4 8EJ: not on the flood risk listPO4 8EL: not on the flood risk listPO4 8EN: not on the flood risk listPO4 8ER: not on the flood risk listPO4 8ET: not on the flood risk listPO4 8EU: not on the flood risk listPO4 8EW: not on the flood risk listPO4 8EX: not on the flood risk listPO4 8EY: not on the flood risk listPO4 8EZ: not on the flood risk listPO4 8FA: not on the flood risk listPO4 8FB: not on the flood risk listPO4 8FD: not on the flood risk listPO4 8FE: not on the flood risk listPO4 8FF: not on the flood risk listPO4 8FG: not on the flood risk listPO4 8FH: not on the flood risk listPO4 8FL: not on the flood risk listPO4 8FN: not on the flood risk listPO4 8FP: not on the flood risk listPO4 8FQ: not on the flood risk listPO4 8FR: not on the flood risk listPO4 8FS: not on the flood risk listPO4 8FT: not on the flood risk listPO4 8FU: not on the flood risk listPO4 8FW: not on the flood risk listPO4 8FX: not on the flood risk listPO4 8FY: not on the flood risk listPO4 8GB: not on the flood risk listPO4 8GR: not on the flood risk listPO4 8GS: not on the flood risk listPO4 8GT: not on the flood risk listPO4 8GU: not on the flood risk listPO4 8GW: not on the flood risk listPO4 8GX: not on the flood risk listPO4 8GY: not on the flood risk listPO4 8GZ: not on the flood risk listPO4 8HA: not on the flood risk listPO4 8HB: not on the flood risk listPO4 8HD: not on the flood risk listPO4 8HF: not on the flood risk listPO4 8HG: not on the flood risk listPO4 8HH: not on the flood risk listPO4 8HJ: not on the flood risk listPO4 8HL: not on the flood risk listPO4 8HN: not on the flood risk listPO4 8HP: not on the flood risk listPO4 8HQ: not on the flood risk listPO4 8HS: not on the flood risk listPO4 8HT: not on the flood risk listPO4 8HU: not on the flood risk listPO4 8HX: not on the flood risk listPO4 8HZ: not on the flood risk listPO4 8JA: not on the flood risk listPO4 8JB: not on the flood risk listPO4 8JG: not on the flood risk listPO4 8JH: not on the flood risk listPO4 8JJ: not on the flood risk listPO4 8JN: not on the flood risk listPO4 8JP: not on the flood risk listPO4 8JQ: not on the flood risk listPO4 8JR: not on the flood risk listPO4 8JS: not on the flood risk listPO4 8JT: not on the flood risk listPO4 8JU: not on the flood risk listPO4 8JW: not on the flood risk listPO4 8JX: not on the flood risk listPO4 8JY: not on the flood risk listPO4 8JZ: not on the flood risk listPO4 8LA: not on the flood risk listPO4 8LB: not on the flood risk listPO4 8LE: not on the flood risk listPO4 8LF: not on the flood risk listPO4 8LG: not on the flood risk listPO4 8LH: not on the flood risk listPO4 8LN: not on the flood risk listPO4 8LP: not on the flood risk listPO4 8LQ: not on the flood risk listPO4 8LR: not on the flood risk listPO4 8LW: not on the flood risk listPO4 8LX: not on the flood risk listPO4 8LY: not on the flood risk listPO4 8LZ: not on the flood risk listPO4 8NA: not on the flood risk listPO4 8NB: not on the flood risk listPO4 8ND: not on the flood risk listPO4 8NE: not on the flood risk listPO4 8NF: not on the flood risk listPO4 8NH: not on the flood risk listPO4 8NJ: not on the flood risk listPO4 8NL: not on the flood risk listPO4 8NN: not on the flood risk listPO4 8NP: not on the flood risk listPO4 8NR: not on the flood risk listPO4 8NS: not on the flood risk listPO4 8NT: not on the flood risk listPO4 8NU: not on the flood risk listPO4 8NW: not on the flood risk listPO4 8NX: not on the flood risk listPO4 8NY: not on the flood risk listPO4 8NZ: not on the flood risk listPO4 8PA: not on the flood risk listPO4 8PB: not on the flood risk listPO4 8PD: not on the flood risk listPO4 8PE: not on the flood risk listPO4 8PF: not on the flood risk listPO4 8PG: not on the flood risk listPO4 8PH: not on the flood risk listPO4 8PL: not on the flood risk listPO4 8PN: not on the flood risk listPO4 8PP: not on the flood risk listPO4 8PQ: not on the flood risk listPO4 8PR: not on the flood risk listPO4 8PS: not on the flood risk listPO4 8PU: not on the flood risk listPO4 8PX: not on the flood risk listPO4 8PY: not on the flood risk listPO4 8PZ: not on the flood risk listPO4 8QA: not on the flood risk listPO4 8QB: not on the flood risk listPO4 8QD: not on the flood risk listPO4 8QE: not on the flood risk listPO4 8QF: not on the flood risk listPO4 8QG: not on the flood risk listPO4 8QH: not on the flood risk listPO4 8QJ: not on the flood risk listPO4 8QL: not on the flood risk listPO4 8QN: not on the flood risk listPO4 8QP: not on the flood risk listPO4 8QQ: not on the flood risk listPO4 8QR: not on the flood risk listPO4 8QS: not on the flood risk listPO4 8QT: not on the flood risk listPO4 8QU: not on the flood risk listPO4 8QW: not on the flood risk listPO4 8QY: not on the flood risk listPO4 8QZ: not on the flood risk listPO4 8RA: not on the flood risk listPO4 8RB: not on the flood risk listPO4 8RF: not on the flood risk listPO4 8RG: not on the flood risk listPO4 8RH: not on the flood risk listPO4 8RJ: not on the flood risk listPO4 8RL: not on the flood risk listPO4 8RN: not on the flood risk listPO4 8RP: not on the flood risk listPO4 8RQ: not on the flood risk listPO4 8RR: not on the flood risk listPO4 8RS: not on the flood risk listPO4 8RT: not on the flood risk listPO4 8RU: not on the flood risk listPO4 8RW: not on the flood risk listPO4 8RX: not on the flood risk listPO4 8RY: not on the flood risk listPO4 8RZ: not on the flood risk listPO4 8SA: not on the flood risk listPO4 8SB: not on the flood risk listPO4 8SE: not on the flood risk listPO4 8SF: not on the flood risk listPO4 8SH: not on the flood risk listPO4 8SJ: not on the flood risk listPO4 8SL: not on the flood risk listPO4 8SN: not on the flood risk listPO4 8SP: not on the flood risk listPO4 8SS: not on the flood risk listPO4 8ST: not on the flood risk listPO4 8SW: not on the flood risk listPO4 8SY: not on the flood risk listPO4 8SZ: not on the flood risk listPO4 8TA: not on the flood risk listPO4 8TB: not on the flood risk listPO4 8TW: not on the flood risk listPO4 8UD: not on the flood risk listPO4 8UE: not on the flood risk listPO4 8UF: not on the flood risk listPO4 8UG: not on the flood risk listPO4 8UP: not on the flood risk listPO4 8UQ: not on the flood risk listPO4 8UR: not on the flood risk listPO4 8UT: not on the flood risk listPO4 8UU: not on the flood risk listPO4 8UZ: not on the flood risk listPO4 8XH: not on the flood risk listPO4 8XJ: not on the flood risk listPO4 8XL: not on the flood risk listPO4 8XN: not on the flood risk listPO4 8XP: not on the flood risk listPO4 8XR: not on the flood risk listPO4 8XU: not on the flood risk listPO4 8XW: not on the flood risk listPO4 8XX: not on the flood risk listPO4 8XY: not on the flood risk listPO4 8XZ: not on the flood risk listPO4 8YA: not on the flood risk listPO4 8YB: not on the flood risk listPO4 8YE: not on the flood risk listPO4 8YF: not on the flood risk listPO4 8YG: not on the flood risk listPO4 8YH: not on the flood risk listPO4 8YJ: not on the flood risk listPO4 8YL: not on the flood risk listPO4 8YN: not on the flood risk listPO4 8YP: not on the flood risk listPO4 8YQ: not on the flood risk listPO4 8YR: not on the flood risk listPO4 8YS: not on the flood risk listPO4 8YW: not on the flood risk listPO4 9AA: not on the flood risk listPO4 9AB: not on the flood risk listPO4 9AD: not on the flood risk listPO4 9AE: not on the flood risk listPO4 9AF: not on the flood risk listPO4 9AH: not on the flood risk listPO4 9AJ: not on the flood risk listPO4 9AL: not on the flood risk listPO4 9AN: not on the flood risk listPO4 9AP: not on the flood risk listPO4 9AQ: not on the flood risk listPO4 9AR: not on the flood risk listPO4 9AS: not on the flood risk listPO4 9AT: not on the flood risk listPO4 9AU: not on the flood risk listPO4 9AW: not on the flood risk listPO4 9AX: not on the flood risk listPO4 9AY: not on the flood risk listPO4 9AZ: not on the flood risk listPO4 9BA: not on the flood risk listPO4 9BB: not on the flood risk listPO4 9BD: not on the flood risk listPO4 9BE: not on the flood risk listPO4 9BG: not on the flood risk listPO4 9BH: not on the flood risk listPO4 9BJ: not on the flood risk listPO4 9BL: not on the flood risk listPO4 9BN: not on the flood risk listPO4 9BQ: not on the flood risk listPO4 9BT: not on the flood risk listPO4 9BU: not on the flood risk listPO4 9BW: not on the flood risk listPO4 9BX: not on the flood risk listPO4 9BY: not on the flood risk listPO4 9BZ: not on the flood risk listPO4 9DA: not on the flood risk listPO4 9DB: not on the flood risk listPO4 9DD: not on the flood risk listPO4 9DE: not on the flood risk listPO4 9DF: not on the flood risk listPO4 9DG: not on the flood risk listPO4 9DH: not on the flood risk listPO4 9DJ: not on the flood risk listPO4 9DL: not on the flood risk listPO4 9DN: not on the flood risk listPO4 9DP: not on the flood risk listPO4 9DQ: not on the flood risk listPO4 9DR: not on the flood risk listPO4 9DS: not on the flood risk listPO4 9DT: not on the flood risk listPO4 9DU: not on the flood risk listPO4 9DZ: not on the flood risk listPO4 9EA: not on the flood risk listPO4 9EB: not on the flood risk listPO4 9ED: not on the flood risk listPO4 9EE: not on the flood risk listPO4 9EF: not on the flood risk listPO4 9EG: not on the flood risk listPO4 9EJ: not on the flood risk listPO4 9EL: not on the flood risk listPO4 9EP: not on the flood risk listPO4 9EQ: not on the flood risk listPO4 9ER: not on the flood risk listPO4 9ES: not on the flood risk listPO4 9ET: not on the flood risk listPO4 9EU: not on the flood risk listPO4 9EW: not on the flood risk listPO4 9EZ: not on the flood risk listPO4 9FA: not on the flood risk listPO4 9FU: not on the flood risk listPO4 9GA: not on the flood risk listPO4 9GD: not on the flood risk listPO4 9GF: not on the flood risk listPO4 9HA: not on the flood risk listPO4 9HB: not on the flood risk listPO4 9HG: not on the flood risk listPO4 9HH: not on the flood risk listPO4 9HJ: not on the flood risk listPO4 9HL: not on the flood risk listPO4 9HN: not on the flood risk listPO4 9HP: not on the flood risk listPO4 9HQ: not on the flood risk listPO4 9HR: not on the flood risk listPO4 9HS: not on the flood risk listPO4 9HT: not on the flood risk listPO4 9HU: not on the flood risk listPO4 9HW: not on the flood risk listPO4 9HX: not on the flood risk listPO4 9HY: not on the flood risk listPO4 9HZ: not on the flood risk listPO4 9JA: not on the flood risk listPO4 9JD: not on the flood risk listPO4 9JE: not on the flood risk listPO4 9JN: not on the flood risk listPO4 9JP: not on the flood risk listPO4 9JR: not on the flood risk listPO4 9JS: not on the flood risk listPO4 9JT: not on the flood risk listPO4 9JX: not on the flood risk listPO4 9LE: not on the flood risk listPO4 9LF: not on the flood risk listPO4 9LH: not on the flood risk listPO4 9LL: not on the flood risk listPO4 9LU: not on the flood risk listPO4 9LZ: not on the flood risk listPO4 9ND: not on the flood risk listPO4 9NF: not on the flood risk listPO4 9NH: not on the flood risk listPO4 9NL: not on the flood risk listPO4 9NN: not on the flood risk listPO4 9NP: not on the flood risk listPO4 9NQ: not on the flood risk listPO4 9NS: not on the flood risk listPO4 9NY: not on the flood risk listPO4 9NZ: not on the flood risk listPO4 9PA: not on the flood risk listPO4 9PB: not on the flood risk listPO4 9PD: not on the flood risk listPO4 9PE: not on the flood risk listPO4 9PF: not on the flood risk listPO4 9PG: not on the flood risk listPO4 9PJ: not on the flood risk listPO4 9PN: not on the flood risk listPO4 9PR: not on the flood risk listPO4 9PS: not on the flood risk listPO4 9PT: not on the flood risk listPO4 9PU: not on the flood risk listPO4 9PW: not on the flood risk listPO4 9PX: not on the flood risk listPO4 9PZ: not on the flood risk listPO4 9QA: not on the flood risk listPO4 9QD: not on the flood risk listPO4 9QG: not on the flood risk listPO4 9QH: not on the flood risk listPO4 9QU: not on the flood risk listPO4 9QW: not on the flood risk listPO4 9QX: not on the flood risk listPO4 9QY: not on the flood risk listPO4 9QZ: not on the flood risk listPO4 9RL: not on the flood risk listPO4 9RS: not on the flood risk listPO4 9RT: not on the flood risk listPO4 9RU: not on the flood risk listPO4 9RY: not on the flood risk listPO4 9RZ: not on the flood risk listPO4 9SA: not on the flood risk listPO4 9SB: not on the flood risk listPO4 9SL: not on the flood risk listPO4 9SS: not on the flood risk listPO4 9ST: not on the flood risk listPO4 9SX: not on the flood risk listPO4 9TH: not on the flood risk listPO4 9TJ: not on the flood risk listPO4 9TL: not on the flood risk listPO4 9TS: not on the flood risk listPO4 9TT: not on the flood risk listPO4 9TX: not on the flood risk listPO4 9UA: not on the flood risk listPO4 9UB: not on the flood risk listPO4 9UE: not on the flood risk listPO4 9UF: not on the flood risk listPO4 9UG: not on the flood risk listPO4 9UQ: not on the flood risk listPO4 9WW: not on the flood risk listPO4 9XA: not on the flood risk listPO4 9XB: not on the flood risk listPO4 9XD: not on the flood risk listPO4 9XE: not on the flood risk listPO4 9XF: not on the flood risk listPO4 9XG: not on the flood risk listPO4 9XH: not on the flood risk listPO4 9XJ: not on the flood risk listPO4 9XL: not on the flood risk listPO4 9XN: not on the flood risk listPO4 9XQ: not on the flood risk listPO4 9XS: not on the flood risk listPO4 9XT: not on the flood risk listPO4 9XU: not on the flood risk listPO4 9XW: not on the flood risk listPO4 9XX: not on the flood risk listPO4 9XY: not on the flood risk listPO4 9XZ: not on the flood risk listPO4 9YA: not on the flood risk listPO4 9YB: not on the flood risk listPO4 9EH: very low flood risk onlyPO4 9GE: very low flood risk onlyPO4 9JZ: very low flood risk onlyPO4 9NX: very low flood risk onlyPO4 9RB: very low flood risk onlyPO4 0JS: low flood risk at worstPO4 0JY: low flood risk at worstPO4 0NH: low flood risk at worstPO4 0NJ: low flood risk at worstPO4 0NN: low flood risk at worstPO4 0NU: low flood risk at worstPO4 0NZ: low flood risk at worstPO4 0PJ: low flood risk at worstPO4 0PL: low flood risk at worstPO4 0PN: low flood risk at worstPO4 0PT: low flood risk at worstPO4 0PZ: low flood risk at worstPO4 0QB: low flood risk at worstPO4 0QL: low flood risk at worstPO4 0QP: low flood risk at worstPO4 0QR: low flood risk at worstPO4 0QT: low flood risk at worstPO4 0QW: low flood risk at worstPO4 0QY: low flood risk at worstPO4 0QZ: low flood risk at worstPO4 0TD: low flood risk at worstPO4 8DZ: low flood risk at worstPO4 8HR: low flood risk at worstPO4 8HY: low flood risk at worstPO4 9FZ: low flood risk at worstPO4 9JB: low flood risk at worstPO4 9JJ: low flood risk at worstPO4 9JL: low flood risk at worstPO4 9JY: low flood risk at worstPO4 9LR: low flood risk at worstPO4 9NR: low flood risk at worstPO4 9NT: low flood risk at worstPO4 9PH: low flood risk at worstPO4 9PL: low flood risk at worstPO4 9PP: low flood risk at worstPO4 9QB: low flood risk at worstPO4 9QN: low flood risk at worstPO4 9QP: low flood risk at worstPO4 9QR: low flood risk at worstPO4 9RP: low flood risk at worstPO4 9SU: low flood risk at worstPO4 9TD: low flood risk at worstPO4 0DD: medium flood risk at worstPO4 0QS: medium flood risk at worstPO4 0RX: medium flood risk at worstPO4 0RZ: medium flood risk at worstPO4 8LL: medium flood risk at worstPO4 9LT: medium flood risk at worstPO4 9QS: medium flood risk at worstPO4 9RD: medium flood risk at worstPO4 9RH: medium flood risk at worstPO4 9TF: medium flood risk at worstPO4 0RU: high flood riskPO4 0AQ: high flood riskPO4 0BW: high flood riskPO4 0BX: high flood riskPO4 0BY: high flood riskPO4 0DE: high flood riskPO4 0NQ: high flood riskPO4 0QJ: high flood riskPO4 0RB: high flood riskPO4 0RD: high flood riskPO4 0RL: high flood riskPO4 0RF: high flood riskPO4 0RH: high flood riskPO4 0RJ: high flood riskPO4 0RN: high flood riskPO4 0RP: high flood riskPO4 0RQ: high flood riskPO4 0RR: high flood riskPO4 0RS: high flood riskPO4 0RT: high flood riskPO4 0RW: high flood riskPO4 0SA: high flood riskPO4 0SB: high flood riskPO4 0SD: high flood riskPO4 0SE: high flood riskPO4 0SF: high flood riskPO4 0SG: high flood riskPO4 0SH: high flood riskPO4 0SJ: high flood riskPO4 0SN: high flood riskPO4 0SP: high flood riskPO4 0SQ: high flood riskPO4 0SU: high flood riskPO4 0SX: high flood riskPO4 0SY: high flood riskPO4 0TB: high flood riskPO4 0UD: high flood riskPO4 0UU: high flood riskPO4 8LS: high flood riskPO4 8LT: high flood riskPO4 9AG: high flood riskPO4 9GB: high flood riskPO4 9JF: high flood riskPO4 9JQ: high flood riskPO4 9JU: high flood riskPO4 9LD: high flood riskPO4 9LG: high flood riskPO4 9LN: high flood riskPO4 9LP: high flood riskPO4 9LQ: high flood riskPO4 9LS: high flood riskPO4 9LW: high flood riskPO4 9LX: high flood riskPO4 9LY: high flood riskPO4 9QF: high flood riskPO4 9QJ: high flood riskPO4 9QL: high flood riskPO4 9RA: high flood riskPO4 9RE: high flood riskPO4 9RF: high flood riskPO4 9RG: high flood riskPO4 9RJ: high flood riskPO4 9RR: high flood riskPO4 9SJ: high flood riskPO4 9TA: high flood riskPO4 9TB: high flood riskPO4 9TE: high flood riskPO4 9UD: high flood risk Eastney and CraneswaterMilton 46 postcodes at high or medium risk, outlined: this goes to PO4 0DE, the one with most homes and businesses at high risk46 postcodes at high or medium risk19 postcodes at high or medium risk, outlined: this goes to PO4 9TB, the one with most homes and businesses at high risk19 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to PO4 9QJ, the one with most homes and businesses at high risk7 postcodes at high or medium risk6 postcodes at high or medium risk, outlined: this goes to PO4 9RF, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in PO4, by flood risk Of the 740 postcodes in PO4 that ONS places, 74 have a home or business at high risk, 10 are at medium risk at worst, 45 are at low risk at worst, 5 are at very low risk only and 606 are not on the Environment Agency's at-risk list. 4 groups of postcodes at high or medium risk are outlined: 46 postcodes at high or medium risk; 19 postcodes at high or medium risk; 7 postcodes at high or medium risk; 6 postcodes at high or medium risk. Places named: Eastney and Craneswater, Milton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Eastney and CraneswaterMilton
  • A home or business at high risk: 74
  • At medium risk at worst: 10
  • At low risk at worst: 45
  • At very low risk only: 5
  • Not on the at-risk list: 606
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 740 postcodes in PO4 that ONS places, 74 have a home or business at high risk, 10 are at medium risk at worst, 45 are at low risk at worst, 5 are at very low risk only and 606 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 50.7902, longitude -1.0621. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

74 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

PO4 9TB101 at high riskPO4 0DE67 at high riskPO4 0RL61 at high riskPO4 9LQ51 at high riskPO4 0SH41 at high riskPO4 0TB41 at high riskPO4 9JQ38 at high riskPO4 0SD38 at high riskPO4 0SF34 at high riskPO4 0SA33 at high riskPO4 9LS33 at high riskPO4 0RW32 at high risk

Where the postcodes at high or medium risk lie together

  • 46 postcodes at high or medium risk, outlined on the map. PO4 0DE, is the one with most homes and businesses at high risk.
  • 19 postcodes at high or medium risk, outlined on the map. PO4 9TB, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. PO4 9QJ, is the one with most homes and businesses at high risk.
  • 6 postcodes at high or medium risk, outlined on the map. PO4 9RF, is the one with most homes and businesses at high risk.

What broadband can you get in PO4?

Ofcom reports on 728 of the 740 postcodes in PO4. At 675 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit675 of 728
Postcodes where every home can get superfast723 of 728

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is PO4 at risk of flooding?

134 of the 740 postcodes in PO4 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 1,509 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 134 of 740 postcodes High: 1,206Medium: 303Low: 624Very low: 48

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in PO4?

Homes in PO4 sold for a typical £265,000 in the 12 months to August 2026, across 519 sales, down 1% on the 12 months before, HM Land Registry's figures show.

£265,000 typical price, the 12 months to August 2026
12 months to August 2025
£267,750
12 months to August 2026
£265,000

▼ down 1% on the 12 months before

Detached£605,000 9 sales
Semi-detached£400,000 36 sales
Terraced£270,000 374 sales
Flat or maisonette£166,500 100 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in PO4

Pick a sector, then a postcode. A sector is the district plus the next digit.

PO4 0211 postcodesPO4 8277 postcodesPO4 9252 postcodes
UK postcode format explained

Places in PO4

Towns and villages with postcodes in PO4, and how many each has here.

Portsmouth postcodes,740

Who covers PO4

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Portsmouth South684
  • Portsmouth North56

Police force areas

  • Hampshire740

Next to PO4

PO3 postcode district PO5 postcode district All PO districts Portsmouth postcodes

"Next to" is by number: the districts before and after PO4 in the PO area.

Check a postcode

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