EN11 postcode district: Hoddesdon and around

EN11 is a postcode district mostly in Hertfordshire, with 654 postcodes in use in 4 sectors. It has postcodes in Hoddesdon. It is split between 3 councils: Broxbourne (636 postcodes), Epping Forest (12) and East Hertfordshire (6). 642 are in Hertfordshire and 12 in Essex.

Postcodes in use
654
Sectors
4
Councils
3 councils
Places
Hoddesdon

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

Every postcode in EN11, by flood risk

Map of every postcode in EN11, by flood risk Of the 654 postcodes in EN11 that ONS places, 24 have a home or business at high risk, 8 are at medium risk at worst, 11 are at low risk at worst, 3 are at very low risk only and 608 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 10 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Hoddesdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A10A414 EN11 0AG: not on the flood risk listEN11 0AH: not on the flood risk listEN11 0AJ: not on the flood risk listEN11 0AL: not on the flood risk listEN11 0AN: not on the flood risk listEN11 0AP: not on the flood risk listEN11 0AQ: not on the flood risk listEN11 0AW: not on the flood risk listEN11 0BL: not on the flood risk listEN11 0BX: not on the flood risk listEN11 0BZ: not on the flood risk listEN11 0DA: not on the flood risk listEN11 0DD: not on the flood risk listEN11 0DG: not on the flood risk listEN11 0DL: not on the flood risk listEN11 0DX: not on the flood risk listEN11 0EA: not on the flood risk listEN11 0EE: not on the flood risk listEN11 0EF: not on the flood risk listEN11 0EG: not on the flood risk listEN11 0EJ: not on the flood risk listEN11 0EL: not on the flood risk listEN11 0EN: not on the flood risk listEN11 0ER: not on the flood risk listEN11 0ES: not on the flood risk listEN11 0EU: not on the flood risk listEN11 0EX: not on the flood risk listEN11 0FE: not on the flood risk listEN11 0FF: not on the flood risk listEN11 0FG: not on the flood risk listEN11 0FH: not on the flood risk listEN11 0FJ: not on the flood risk listEN11 0FL: not on the flood risk listEN11 0FN: not on the flood risk listEN11 0FQ: not on the flood risk listEN11 0FR: not on the flood risk listEN11 0FS: not on the flood risk listEN11 0GA: not on the flood risk listEN11 0GB: not on the flood risk listEN11 0GD: not on the flood risk listEN11 0GG: not on the flood risk listEN11 0GH: not on the flood risk listEN11 0GJ: not on the flood risk listEN11 0GN: not on the flood risk listEN11 0GQ: not on the flood risk listEN11 0HA: not on the flood risk listEN11 0HD: not on the flood risk listEN11 0HJ: not on the flood risk listEN11 0HL: not on the flood risk listEN11 0HN: not on the flood risk listEN11 0HP: not on the flood risk listEN11 0HQ: not on the flood risk listEN11 0HR: not on the flood risk listEN11 0HS: not on the flood risk listEN11 0HT: not on the flood risk listEN11 0HU: not on the flood risk listEN11 0HW: not on the flood risk listEN11 0HX: not on the flood risk listEN11 0HY: not on the flood risk listEN11 0JA: not on the flood risk listEN11 0JB: not on the flood risk listEN11 0JD: not on the flood risk listEN11 0JE: not on the flood risk listEN11 0JF: not on the flood risk listEN11 0JG: not on the flood risk listEN11 0JH: not on the flood risk listEN11 0JJ: not on the flood risk listEN11 0JL: not on the flood risk listEN11 0JN: not on the flood risk listEN11 0JP: not on the flood risk listEN11 0JR: not on the flood risk listEN11 0JS: not on the flood risk listEN11 0JT: not on the flood risk listEN11 0JU: not on the flood risk listEN11 0JW: not on the flood risk listEN11 0JX: not on the flood risk listEN11 0LB: not on the flood risk listEN11 0LD: not on the flood risk listEN11 0LH: not on the flood risk listEN11 0LJ: not on the flood risk listEN11 0LL: not on the flood risk listEN11 0LN: not on the flood risk listEN11 0LP: not on the flood risk listEN11 0LQ: not on the flood risk listEN11 0LS: not on the flood risk listEN11 0LT: not on the flood risk listEN11 0LU: not on the flood risk listEN11 0LX: not on the flood risk listEN11 0LY: not on the flood risk listEN11 0LZ: not on the flood risk listEN11 0NA: not on the flood risk listEN11 0NB: not on the flood risk listEN11 0ND: not on the flood risk listEN11 0NF: not on the flood risk listEN11 0NG: not on the flood risk listEN11 0NH: not on the flood risk listEN11 0NJ: not on the flood risk listEN11 0NL: not on the flood risk listEN11 0NN: not on the flood risk listEN11 0NP: not on the flood risk listEN11 0NQ: not on the flood risk listEN11 0NR: not on the flood risk listEN11 0NS: not on the flood risk listEN11 0NU: not on the flood risk listEN11 0PD: not on the flood risk listEN11 0PE: not on the flood risk listEN11 0PF: not on the flood risk listEN11 0PG: not on the flood risk listEN11 0PH: not on the flood risk listEN11 0PJ: not on the flood risk listEN11 0PL: not on the flood risk listEN11 0PN: not on the flood risk listEN11 0PP: not on the flood risk listEN11 0PQ: not on the flood risk listEN11 0PR: not on the flood risk listEN11 0PS: not on the flood risk listEN11 0PT: not on the flood risk listEN11 0PU: not on the flood risk listEN11 0PW: not on the flood risk listEN11 0PX: not on the flood risk listEN11 0PY: not on the flood risk listEN11 0QA: not on the flood risk listEN11 0QB: not on the flood risk listEN11 0QD: not on the flood risk listEN11 0QE: not on the flood risk listEN11 0QF: not on the flood risk listEN11 0QG: not on the flood risk listEN11 0QJ: not on the flood risk listEN11 0QL: not on the flood risk listEN11 0QN: not on the flood risk listEN11 0QQ: not on the flood risk listEN11 0QW: not on the flood risk listEN11 0QY: not on the flood risk listEN11 0RD: not on the flood risk listEN11 0RH: not on the flood risk listEN11 0RJ: not on the flood risk listEN11 0RL: not on the flood risk listEN11 0RN: not on the flood risk listEN11 0RP: not on the flood risk listEN11 0RR: not on the flood risk listEN11 0RS: not on the flood risk listEN11 0RU: not on the flood risk listEN11 0RW: not on the flood risk listEN11 0RX: not on the flood risk listEN11 0RY: not on the flood risk listEN11 0RZ: not on the flood risk listEN11 1AP: not on the flood risk listEN11 8AA: not on the flood risk listEN11 8AB: not on the flood risk listEN11 8AD: not on the flood risk listEN11 8AE: not on the flood risk listEN11 8AG: not on the flood risk listEN11 8AJ: not on the flood risk listEN11 8AP: not on the flood risk listEN11 8AS: not on the flood risk listEN11 8AT: not on the flood risk listEN11 8AY: not on the flood risk listEN11 8BB: not on the flood risk listEN11 8BD: not on the flood risk listEN11 8BE: not on the flood risk listEN11 8BH: not on the flood risk listEN11 8BJ: not on the flood risk listEN11 8BL: not on the flood risk listEN11 8BN: not on the flood risk listEN11 8BP: not on the flood risk listEN11 8BQ: not on the flood risk listEN11 8BS: not on the flood risk listEN11 8BT: not on the flood risk listEN11 8BU: not on the flood risk listEN11 8BX: not on the flood risk listEN11 8BY: not on the flood risk listEN11 8BZ: not on the flood risk listEN11 8DA: not on the flood risk listEN11 8DB: not on the flood risk listEN11 8DE: not on the flood risk listEN11 8DH: not on the flood risk listEN11 8DJ: not on the flood risk listEN11 8DL: not on the flood risk listEN11 8DN: not on the flood risk listEN11 8DP: not on the flood risk listEN11 8DQ: not on the flood risk listEN11 8DR: not on the flood risk listEN11 8DS: not on the flood risk listEN11 8DT: not on the flood risk listEN11 8DU: not on the flood risk listEN11 8DW: not on the flood risk listEN11 8DX: not on the flood risk listEN11 8DY: not on the flood risk listEN11 8DZ: not on the flood risk listEN11 8EA: not on the flood risk listEN11 8EB: not on the flood risk listEN11 8ED: not on the flood risk listEN11 8EE: not on the flood risk listEN11 8EF: not on the flood risk listEN11 8EG: not on the flood risk listEN11 8EH: not on the flood risk listEN11 8EJ: not on the flood risk listEN11 8EP: not on the flood risk listEN11 8EQ: not on the flood risk listEN11 8ET: not on the flood risk listEN11 8EU: not on the flood risk listEN11 8EX: not on the flood risk listEN11 8EY: not on the flood risk listEN11 8FA: not on the flood risk listEN11 8FB: not on the flood risk listEN11 8FD: not on the flood risk listEN11 8FE: not on the flood risk listEN11 8FF: not on the flood risk listEN11 8FG: not on the flood risk listEN11 8FH: not on the flood risk listEN11 8FJ: not on the flood risk listEN11 8FL: not on the flood risk listEN11 8FN: not on the flood risk listEN11 8FQ: not on the flood risk listEN11 8FR: not on the flood risk listEN11 8FS: not on the flood risk listEN11 8FT: not on the flood risk listEN11 8FU: not on the flood risk listEN11 8FW: not on the flood risk listEN11 8FX: not on the flood risk listEN11 8GA: not on the flood risk listEN11 8GD: not on the flood risk listEN11 8GE: not on the flood risk listEN11 8GF: not on the flood risk listEN11 8GG: not on the flood risk listEN11 8GH: not on the flood risk listEN11 8GJ: not on the flood risk listEN11 8GL: not on the flood risk listEN11 8GN: not on the flood risk listEN11 8GP: not on the flood risk listEN11 8GR: not on the flood risk listEN11 8GZ: not on the flood risk listEN11 8HD: not on the flood risk listEN11 8HH: not on the flood risk listEN11 8HJ: not on the flood risk listEN11 8HP: not on the flood risk listEN11 8HQ: not on the flood risk listEN11 8HS: not on the flood risk listEN11 8HT: not on the flood risk listEN11 8HU: not on the flood risk listEN11 8HW: not on the flood risk listEN11 8HY: not on the flood risk listEN11 8HZ: not on the flood risk listEN11 8JA: not on the flood risk listEN11 8JB: not on the flood risk listEN11 8JD: not on the flood risk listEN11 8JF: not on the flood risk listEN11 8JG: not on the flood risk listEN11 8JH: not on the flood risk listEN11 8JJ: not on the flood risk listEN11 8JL: not on the flood risk listEN11 8JN: not on the flood risk listEN11 8JP: not on the flood risk listEN11 8JQ: not on the flood risk listEN11 8JS: not on the flood risk listEN11 8JU: not on the flood risk listEN11 8JW: not on the flood risk listEN11 8JX: not on the flood risk listEN11 8JY: not on the flood risk listEN11 8JZ: not on the flood risk listEN11 8LA: not on the flood risk listEN11 8LB: not on the flood risk listEN11 8LD: not on the flood risk listEN11 8LG: not on the flood risk listEN11 8LH: not on the flood risk listEN11 8LJ: not on the flood risk listEN11 8LL: not on the flood risk listEN11 8LP: not on the flood risk listEN11 8LQ: not on the flood risk listEN11 8LR: not on the flood risk listEN11 8LS: not on the flood risk listEN11 8LW: not on the flood risk listEN11 8LX: not on the flood risk listEN11 8LY: not on the flood risk listEN11 8LZ: not on the flood risk listEN11 8NB: not on the flood risk listEN11 8ND: not on the flood risk listEN11 8NE: not on the flood risk listEN11 8NF: not on the flood risk listEN11 8NG: not on the flood risk listEN11 8NH: not on the flood risk listEN11 8NJ: not on the flood risk listEN11 8NL: not on the flood risk listEN11 8NN: not on the flood risk listEN11 8NP: not on the flood risk listEN11 8NQ: not on the flood risk listEN11 8NR: not on the flood risk listEN11 8NS: not on the flood risk listEN11 8NU: not on the flood risk listEN11 8NX: not on the flood risk listEN11 8NZ: not on the flood risk listEN11 8PA: not on the flood risk listEN11 8PD: not on the flood risk listEN11 8PE: not on the flood risk listEN11 8PF: not on the flood risk listEN11 8PG: not on the flood risk listEN11 8PH: not on the flood risk listEN11 8PJ: not on the flood risk listEN11 8PU: not on the flood risk listEN11 8PX: not on the flood risk listEN11 8PY: not on the flood risk listEN11 8PZ: not on the flood risk listEN11 8QA: not on the flood risk listEN11 8QB: not on the flood risk listEN11 8QD: not on the flood risk listEN11 8QE: not on the flood risk listEN11 8QF: not on the flood risk listEN11 8QG: not on the flood risk listEN11 8QP: not on the flood risk listEN11 8QQ: not on the flood risk listEN11 8QR: not on the flood risk listEN11 8QS: not on the flood risk listEN11 8QT: not on the flood risk listEN11 8QU: not on the flood risk listEN11 8QW: not on the flood risk listEN11 8QX: not on the flood risk listEN11 8QY: not on the flood risk listEN11 8QZ: not on the flood risk listEN11 8RA: not on the flood risk listEN11 8RB: not on the flood risk listEN11 8RD: not on the flood risk listEN11 8RE: not on the flood risk listEN11 8RF: not on the flood risk listEN11 8RG: not on the flood risk listEN11 8RH: not on the flood risk listEN11 8RJ: not on the flood risk listEN11 8RL: not on the flood risk listEN11 8RN: not on the flood risk listEN11 8RP: not on the flood risk listEN11 8RQ: not on the flood risk listEN11 8RR: not on the flood risk listEN11 8RS: not on the flood risk listEN11 8RT: not on the flood risk listEN11 8RU: not on the flood risk listEN11 8RW: not on the flood risk listEN11 8RX: not on the flood risk listEN11 8RY: not on the flood risk listEN11 8RZ: not on the flood risk listEN11 8SB: not on the flood risk listEN11 8SG: not on the flood risk listEN11 8SH: not on the flood risk listEN11 8SJ: not on the flood risk listEN11 8SL: not on the flood risk listEN11 8SN: not on the flood risk listEN11 8SP: not on the flood risk listEN11 8SQ: not on the flood risk listEN11 8SR: not on the flood risk listEN11 8SX: not on the flood risk listEN11 8TE: not on the flood risk listEN11 8TH: not on the flood risk listEN11 8TJ: not on the flood risk listEN11 8TL: not on the flood risk listEN11 8TN: not on the flood risk listEN11 8TP: not on the flood risk listEN11 8TQ: not on the flood risk listEN11 8TR: not on the flood risk listEN11 8TS: not on the flood risk listEN11 8TW: not on the flood risk listEN11 8TX: not on the flood risk listEN11 8TZ: not on the flood risk listEN11 8UA: not on the flood risk listEN11 8UB: not on the flood risk listEN11 8UG: not on the flood risk listEN11 8UH: not on the flood risk listEN11 8UJ: not on the flood risk listEN11 8UN: not on the flood risk listEN11 8UQ: not on the flood risk listEN11 8UR: not on the flood risk listEN11 8US: not on the flood risk listEN11 8UX: not on the flood risk listEN11 9AA: not on the flood risk listEN11 9AB: not on the flood risk listEN11 9AD: not on the flood risk listEN11 9AE: not on the flood risk listEN11 9AF: not on the flood risk listEN11 9AH: not on the flood risk listEN11 9AJ: not on the flood risk listEN11 9AL: not on the flood risk listEN11 9AN: not on the flood risk listEN11 9AP: not on the flood risk listEN11 9AR: not on the flood risk listEN11 9AS: not on the flood risk listEN11 9AT: not on the flood risk listEN11 9AU: not on the flood risk listEN11 9AW: not on the flood risk listEN11 9AX: not on the flood risk listEN11 9AY: not on the flood risk listEN11 9AZ: not on the flood risk listEN11 9BA: not on the flood risk listEN11 9BB: not on the flood risk listEN11 9BD: not on the flood risk listEN11 9BE: not on the flood risk listEN11 9BL: not on the flood risk listEN11 9BN: not on the flood risk listEN11 9BP: not on the flood risk listEN11 9BQ: not on the flood risk listEN11 9BS: not on the flood risk listEN11 9BW: not on the flood risk listEN11 9BX: not on the flood risk listEN11 9BY: not on the flood risk listEN11 9DA: not on the flood risk listEN11 9DB: not on the flood risk listEN11 9DD: not on the flood risk listEN11 9DE: not on the flood risk listEN11 9DF: not on the flood risk listEN11 9DG: not on the flood risk listEN11 9DH: not on the flood risk listEN11 9DJ: not on the flood risk listEN11 9DL: not on the flood risk listEN11 9DN: not on the flood risk listEN11 9DP: not on the flood risk listEN11 9DQ: not on the flood risk listEN11 9DT: not on the flood risk listEN11 9DU: not on the flood risk listEN11 9DW: not on the flood risk listEN11 9DX: not on the flood risk listEN11 9DY: not on the flood risk listEN11 9DZ: not on the flood risk listEN11 9EA: not on the flood risk listEN11 9EB: not on the flood risk listEN11 9ED: not on the flood risk listEN11 9EE: not on the flood risk listEN11 9EF: not on the flood risk listEN11 9EG: not on the flood risk listEN11 9EH: not on the flood risk listEN11 9EJ: not on the flood risk listEN11 9EL: not on the flood risk listEN11 9EN: not on the flood risk listEN11 9EP: not on the flood risk listEN11 9EQ: not on the flood risk listEN11 9ER: not on the flood risk listEN11 9ES: not on the flood risk listEN11 9ET: not on the flood risk listEN11 9EU: not on the flood risk listEN11 9EW: not on the flood risk listEN11 9EX: not on the flood risk listEN11 9EY: not on the flood risk listEN11 9EZ: not on the flood risk listEN11 9FA: not on the flood risk listEN11 9FB: not on the flood risk listEN11 9FD: not on the flood risk listEN11 9FE: not on the flood risk listEN11 9FF: not on the flood risk listEN11 9FG: not on the flood risk listEN11 9FH: not on the flood risk listEN11 9FJ: not on the flood risk listEN11 9FP: not on the flood risk listEN11 9FQ: not on the flood risk listEN11 9FR: not on the flood risk listEN11 9FS: not on the flood risk listEN11 9HD: not on the flood risk listEN11 9HE: not on the flood risk listEN11 9HF: not on the flood risk listEN11 9HG: not on the flood risk listEN11 9HH: not on the flood risk listEN11 9HJ: not on the flood risk listEN11 9HL: not on the flood risk listEN11 9HN: not on the flood risk listEN11 9HP: not on the flood risk listEN11 9HQ: not on the flood risk listEN11 9HR: not on the flood risk listEN11 9HS: not on the flood risk listEN11 9HT: not on the flood risk listEN11 9HU: not on the flood risk listEN11 9HW: not on the flood risk listEN11 9HX: not on the flood risk listEN11 9HY: not on the flood risk listEN11 9HZ: not on the flood risk listEN11 9JA: not on the flood risk listEN11 9JB: not on the flood risk listEN11 9JD: not on the flood risk listEN11 9JE: not on the flood risk listEN11 9JF: not on the flood risk listEN11 9JG: not on the flood risk listEN11 9JL: not on the flood risk listEN11 9JN: not on the flood risk listEN11 9JP: not on the flood risk listEN11 9JR: not on the flood risk listEN11 9JS: not on the flood risk listEN11 9JT: not on the flood risk listEN11 9JU: not on the flood risk listEN11 9JW: not on the flood risk listEN11 9JX: not on the flood risk listEN11 9JY: not on the flood risk listEN11 9LA: not on the flood risk listEN11 9LB: not on the flood risk listEN11 9LD: not on the flood risk listEN11 9LE: not on the flood risk listEN11 9LF: not on the flood risk listEN11 9LG: not on the flood risk listEN11 9LH: not on the flood risk listEN11 9LJ: not on the flood risk listEN11 9LL: not on the flood risk listEN11 9LN: not on the flood risk listEN11 9LP: not on the flood risk listEN11 9LQ: not on the flood risk listEN11 9LR: not on the flood risk listEN11 9LS: not on the flood risk listEN11 9LT: not on the flood risk listEN11 9LU: not on the flood risk listEN11 9LW: not on the flood risk listEN11 9LX: not on the flood risk listEN11 9LY: not on the flood risk listEN11 9LZ: not on the flood risk listEN11 9NA: not on the flood risk listEN11 9NB: not on the flood risk listEN11 9ND: not on the flood risk listEN11 9NE: not on the flood risk listEN11 9NF: not on the flood risk listEN11 9NG: not on the flood risk listEN11 9NH: not on the flood risk listEN11 9NJ: not on the flood risk listEN11 9NP: not on the flood risk listEN11 9NQ: not on the flood risk listEN11 9NR: not on the flood risk listEN11 9NS: not on the flood risk listEN11 9NT: not on the flood risk listEN11 9NU: not on the flood risk listEN11 9NX: not on the flood risk listEN11 9NY: not on the flood risk listEN11 9NZ: not on the flood risk listEN11 9PA: not on the flood risk listEN11 9PB: not on the flood risk listEN11 9PD: not on the flood risk listEN11 9PE: not on the flood risk listEN11 9PF: not on the flood risk listEN11 9PG: not on the flood risk listEN11 9PN: not on the flood risk listEN11 9PP: not on the flood risk listEN11 9PR: not on the flood risk listEN11 9PS: not on the flood risk listEN11 9PT: not on the flood risk listEN11 9PU: not on the flood risk listEN11 9PW: not on the flood risk listEN11 9PX: not on the flood risk listEN11 9PY: not on the flood risk listEN11 9PZ: not on the flood risk listEN11 9QA: not on the flood risk listEN11 9QB: not on the flood risk listEN11 9QD: not on the flood risk listEN11 9QE: not on the flood risk listEN11 9QF: not on the flood risk listEN11 9QG: not on the flood risk listEN11 9QH: not on the flood risk listEN11 9QJ: not on the flood risk listEN11 9QL: not on the flood risk listEN11 9QN: not on the flood risk listEN11 9QP: not on the flood risk listEN11 9QQ: not on the flood risk listEN11 9QR: not on the flood risk listEN11 9QS: not on the flood risk listEN11 9QW: not on the flood risk listEN11 0DE: very low flood risk onlyEN11 0DR: very low flood risk onlyEN11 0WZ: very low flood risk onlyEN11 0BJ: low flood risk at worstEN11 0DN: low flood risk at worstEN11 0DU: low flood risk at worstEN11 0GL: low flood risk at worstEN11 0NT: low flood risk at worstEN11 0NX: low flood risk at worstEN11 8AF: low flood risk at worstEN11 8AQ: low flood risk at worstEN11 8AZ: low flood risk at worstEN11 8BA: low flood risk at worstEN11 8HX: low flood risk at worstEN11 0AE: medium flood risk at worstEN11 0AY: medium flood risk at worstEN11 0DY: medium flood risk at worstEN11 0EW: medium flood risk at worstEN11 0EZ: medium flood risk at worstEN11 0HH: medium flood risk at worstEN11 0QU: medium flood risk at worstEN11 0QX: medium flood risk at worstEN11 0AA: high flood riskEN11 0AB: high flood riskEN11 0AD: high flood riskEN11 0AS: high flood riskEN11 0AT: high flood riskEN11 0AZ: high flood riskEN11 0BA: high flood riskEN11 0BB: high flood riskEN11 0BD: high flood riskEN11 0BE: high flood riskEN11 0BG: high flood riskEN11 0BH: high flood riskEN11 0BQ: high flood riskEN11 0BT: high flood riskEN11 0BW: high flood riskEN11 0DJ: high flood riskEN11 0EH: high flood riskEN11 0EQ: high flood riskEN11 0FB: high flood riskEN11 0HB: high flood riskEN11 0QH: high flood riskEN11 0QR: high flood riskEN11 0RF: high flood risk Hoddesdon 10 postcodes at high or medium risk, outlined: this goes to EN11 0BE, the one with most homes and businesses at high risk10 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to EN11 0AD, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in EN11, by flood risk Of the 654 postcodes in EN11 that ONS places, 24 have a home or business at high risk, 8 are at medium risk at worst, 11 are at low risk at worst, 3 are at very low risk only and 608 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 10 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Hoddesdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A414 Hoddesdon
  • A home or business at high risk: 24
  • At medium risk at worst: 8
  • At low risk at worst: 11
  • At very low risk only: 3
  • Not on the at-risk list: 608
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 654 postcodes in EN11 that ONS places, 24 have a home or business at high risk, 8 are at medium risk at worst, 11 are at low risk at worst, 3 are at very low risk only and 608 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.

The middle of its postcodes: latitude 51.7657, longitude -0.0094. 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

24 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.

EN11 0DJ51 at high riskEN11 0EH31 at high riskEN11 0BW30 at high riskEN11 0BE23 at high riskEN11 0BG21 at high riskEN11 0BH20 at high riskEN11 0AD16 at high riskEN11 0AT9 at high riskEN11 0BQ9 at high riskEN11 0BA7 at high riskEN11 0AZ7 at high riskEN11 0AA6 at high risk

Where the postcodes at high or medium risk lie together

  • 10 postcodes at high or medium risk, outlined on the map. EN11 0BE, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. EN11 0AD, is the one with most homes and businesses at high risk.

What broadband can you get in EN11?

Ofcom reports on 608 of the 654 postcodes in EN11. At 498 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit498 of 608
Postcodes where every home can get superfast592 of 608
Postcodes where some cannot get decent broadband1 of 608

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 EN11 at risk of flooding?

46 of the 654 postcodes in EN11 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 427 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 46 of 654 postcodes High: 272Medium: 155Low: 128Very low: 41

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 EN11?

Homes in EN11 sold for a typical £393,750 in the 12 months to August 2026, across 246 sales, down 6.2% on the 12 months before, HM Land Registry's figures show.

£393,750 typical price, the 12 months to August 2026
£420,000 12 months to August 2025
▼ down 6.2% on the 12 months before
  • Detached £625,000 22 sales
  • Semi-detached £436,750 56 sales
  • Terraced £420,000 95 sales
  • Flat or maisonette £250,000 73 sales

Each bar is that kind's typical price, against the most expensive kind here.

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 EN11

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

EN11 0192 postcodesEN11 137 postcodesEN11 8243 postcodesEN11 9182 postcodes
UK postcode format explained

Places in EN11

Towns and villages with postcodes in EN11, and how many each has here.

Hoddesdon postcodes,632

Who covers EN11

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

  • Broxbourne642
  • Harlow12

Police force areas

  • Hertfordshire642
  • Essex12

Next to EN11

EN10 postcode district EN77 postcode district All EN districts Hoddesdon postcodes

"Next to" is by number: the districts before and after EN11 in the EN area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.