SS4 postcode district: Rochford and around, Essex

SS4 is a postcode district in Essex, with 591 postcodes in use in 4 sectors. It has postcodes in Rochford, Ashingdon and Southend-on-Sea. Its council is Rochford.

Postcodes in use
591
Sectors
4
Council
Rochford
Places
3 places

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

Every postcode in SS4, by flood risk

Map of every postcode in SS4, by flood risk Of the 591 postcodes in SS4 that ONS places, 33 have a home or business at high risk, 14 are at medium risk at worst, 36 are at low risk at worst, 17 are at very low risk only and 491 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Rochford, Ashingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. SS4 1AB: not on the flood risk listSS4 1AD: not on the flood risk listSS4 1AE: not on the flood risk listSS4 1AF: not on the flood risk listSS4 1AG: not on the flood risk listSS4 1AH: not on the flood risk listSS4 1AL: not on the flood risk listSS4 1AN: not on the flood risk listSS4 1AQ: not on the flood risk listSS4 1AT: not on the flood risk listSS4 1AY: not on the flood risk listSS4 1BA: not on the flood risk listSS4 1BG: not on the flood risk listSS4 1BJ: not on the flood risk listSS4 1BQ: not on the flood risk listSS4 1BW: not on the flood risk listSS4 1DD: not on the flood risk listSS4 1DE: not on the flood risk listSS4 1DF: not on the flood risk listSS4 1DJ: not on the flood risk listSS4 1DL: not on the flood risk listSS4 1DN: not on the flood risk listSS4 1DP: not on the flood risk listSS4 1DQ: not on the flood risk listSS4 1DT: not on the flood risk listSS4 1DU: not on the flood risk listSS4 1DX: not on the flood risk listSS4 1DZ: not on the flood risk listSS4 1EB: not on the flood risk listSS4 1ED: not on the flood risk listSS4 1EE: not on the flood risk listSS4 1EF: not on the flood risk listSS4 1EG: not on the flood risk listSS4 1EH: not on the flood risk listSS4 1EN: not on the flood risk listSS4 1EP: not on the flood risk listSS4 1EQ: not on the flood risk listSS4 1ER: not on the flood risk listSS4 1ES: not on the flood risk listSS4 1EW: not on the flood risk listSS4 1EX: not on the flood risk listSS4 1FA: not on the flood risk listSS4 1FF: not on the flood risk listSS4 1FJ: not on the flood risk listSS4 1FL: not on the flood risk listSS4 1FN: not on the flood risk listSS4 1FP: not on the flood risk listSS4 1FS: not on the flood risk listSS4 1FT: not on the flood risk listSS4 1FU: not on the flood risk listSS4 1FX: not on the flood risk listSS4 1FY: not on the flood risk listSS4 1FZ: not on the flood risk listSS4 1GB: not on the flood risk listSS4 1GE: not on the flood risk listSS4 1GH: not on the flood risk listSS4 1GJ: not on the flood risk listSS4 1GN: not on the flood risk listSS4 1GP: not on the flood risk listSS4 1GQ: not on the flood risk listSS4 1GU: not on the flood risk listSS4 1GW: not on the flood risk listSS4 1GX: not on the flood risk listSS4 1GY: not on the flood risk listSS4 1HE: not on the flood risk listSS4 1HF: not on the flood risk listSS4 1HG: not on the flood risk listSS4 1HH: not on the flood risk listSS4 1HJ: not on the flood risk listSS4 1HQ: not on the flood risk listSS4 1HS: not on the flood risk listSS4 1HT: not on the flood risk listSS4 1HU: not on the flood risk listSS4 1HX: not on the flood risk listSS4 1HY: not on the flood risk listSS4 1JA: not on the flood risk listSS4 1JB: not on the flood risk listSS4 1JD: not on the flood risk listSS4 1JE: not on the flood risk listSS4 1JH: not on the flood risk listSS4 1JJ: not on the flood risk listSS4 1JT: not on the flood risk listSS4 1JW: not on the flood risk listSS4 1JX: not on the flood risk listSS4 1JZ: not on the flood risk listSS4 1LA: not on the flood risk listSS4 1LB: not on the flood risk listSS4 1LD: not on the flood risk listSS4 1LE: not on the flood risk listSS4 1LF: not on the flood risk listSS4 1LP: not on the flood risk listSS4 1LQ: not on the flood risk listSS4 1LR: not on the flood risk listSS4 1LT: not on the flood risk listSS4 1LU: not on the flood risk listSS4 1LY: not on the flood risk listSS4 1NB: not on the flood risk listSS4 1ND: not on the flood risk listSS4 1NE: not on the flood risk listSS4 1NG: not on the flood risk listSS4 1NT: not on the flood risk listSS4 1NW: not on the flood risk listSS4 1NX: not on the flood risk listSS4 1NZ: not on the flood risk listSS4 1PA: not on the flood risk listSS4 1PD: not on the flood risk listSS4 1PE: not on the flood risk listSS4 1PH: not on the flood risk listSS4 1PJ: not on the flood risk listSS4 1PL: not on the flood risk listSS4 1PN: not on the flood risk listSS4 1PS: not on the flood risk listSS4 1PT: not on the flood risk listSS4 1PW: not on the flood risk listSS4 1PY: not on the flood risk listSS4 1QA: not on the flood risk listSS4 1QB: not on the flood risk listSS4 1QD: not on the flood risk listSS4 1QE: not on the flood risk listSS4 1QF: not on the flood risk listSS4 1QG: not on the flood risk listSS4 1QH: not on the flood risk listSS4 1QJ: not on the flood risk listSS4 1QL: not on the flood risk listSS4 1QN: not on the flood risk listSS4 1QP: not on the flood risk listSS4 1QQ: not on the flood risk listSS4 1QR: not on the flood risk listSS4 1QS: not on the flood risk listSS4 1QW: not on the flood risk listSS4 1QZ: not on the flood risk listSS4 1RD: not on the flood risk listSS4 1RE: not on the flood risk listSS4 1RF: not on the flood risk listSS4 1RG: not on the flood risk listSS4 1RJ: not on the flood risk listSS4 1RN: not on the flood risk listSS4 1RP: not on the flood risk listSS4 1RQ: not on the flood risk listSS4 1RR: not on the flood risk listSS4 1RS: not on the flood risk listSS4 1RT: not on the flood risk listSS4 1RU: not on the flood risk listSS4 1RX: not on the flood risk listSS4 1RY: not on the flood risk listSS4 1SA: not on the flood risk listSS4 1SB: not on the flood risk listSS4 1SD: not on the flood risk listSS4 1SE: not on the flood risk listSS4 1SG: not on the flood risk listSS4 1SH: not on the flood risk listSS4 1SJ: not on the flood risk listSS4 1SL: not on the flood risk listSS4 1SP: not on the flood risk listSS4 1SQ: not on the flood risk listSS4 1SS: not on the flood risk listSS4 1ST: not on the flood risk listSS4 1SU: not on the flood risk listSS4 1SW: not on the flood risk listSS4 1SY: not on the flood risk listSS4 1TA: not on the flood risk listSS4 1TB: not on the flood risk listSS4 1TD: not on the flood risk listSS4 1TE: not on the flood risk listSS4 1TF: not on the flood risk listSS4 1TH: not on the flood risk listSS4 1TJ: not on the flood risk listSS4 1TL: not on the flood risk listSS4 1TN: not on the flood risk listSS4 1TP: not on the flood risk listSS4 1TS: not on the flood risk listSS4 1TT: not on the flood risk listSS4 1TW: not on the flood risk listSS4 1TY: not on the flood risk listSS4 1UA: not on the flood risk listSS4 1UB: not on the flood risk listSS4 1UD: not on the flood risk listSS4 1UE: not on the flood risk listSS4 1UG: not on the flood risk listSS4 1UH: not on the flood risk listSS4 1UJ: not on the flood risk listSS4 1UL: not on the flood risk listSS4 1UN: not on the flood risk listSS4 1UP: not on the flood risk listSS4 1UR: not on the flood risk listSS4 1UW: not on the flood risk listSS4 1UX: not on the flood risk listSS4 1UZ: not on the flood risk listSS4 1WN: not on the flood risk listSS4 1WQ: not on the flood risk listSS4 1WS: not on the flood risk listSS4 1WW: not on the flood risk listSS4 1XA: not on the flood risk listSS4 1XD: not on the flood risk listSS4 1XG: not on the flood risk listSS4 1XH: not on the flood risk listSS4 1XJ: not on the flood risk listSS4 1XN: not on the flood risk listSS4 1XQ: not on the flood risk listSS4 1XS: not on the flood risk listSS4 1XT: not on the flood risk listSS4 1XU: not on the flood risk listSS4 1XY: not on the flood risk listSS4 1YD: not on the flood risk listSS4 1YL: not on the flood risk listSS4 1YP: not on the flood risk listSS4 1YR: not on the flood risk listSS4 1YS: not on the flood risk listSS4 1YT: not on the flood risk listSS4 1YU: not on the flood risk listSS4 1YW: not on the flood risk listSS4 1YX: not on the flood risk listSS4 1ZA: not on the flood risk listSS4 1ZD: not on the flood risk listSS4 1ZE: not on the flood risk listSS4 1ZF: not on the flood risk listSS4 2AB: not on the flood risk listSS4 2AF: not on the flood risk listSS4 2AH: not on the flood risk listSS4 2AP: not on the flood risk listSS4 2AS: not on the flood risk listSS4 2AW: not on the flood risk listSS4 2BD: not on the flood risk listSS4 2BE: not on the flood risk listSS4 2BG: not on the flood risk listSS4 2BJ: not on the flood risk listSS4 2BL: not on the flood risk listSS4 2DA: not on the flood risk listSS4 2DD: not on the flood risk listSS4 2DG: not on the flood risk listSS4 2EA: not on the flood risk listSS4 2EB: not on the flood risk listSS4 2ET: not on the flood risk listSS4 2EU: not on the flood risk listSS4 2EX: not on the flood risk listSS4 3AB: not on the flood risk listSS4 3AE: not on the flood risk listSS4 3AF: not on the flood risk listSS4 3AG: not on the flood risk listSS4 3AH: not on the flood risk listSS4 3AJ: not on the flood risk listSS4 3AL: not on the flood risk listSS4 3AN: not on the flood risk listSS4 3AP: not on the flood risk listSS4 3AR: not on the flood risk listSS4 3AS: not on the flood risk listSS4 3AT: not on the flood risk listSS4 3AU: not on the flood risk listSS4 3AW: not on the flood risk listSS4 3AX: not on the flood risk listSS4 3AY: not on the flood risk listSS4 3AZ: not on the flood risk listSS4 3BB: not on the flood risk listSS4 3BD: not on the flood risk listSS4 3BE: not on the flood risk listSS4 3BG: not on the flood risk listSS4 3BH: not on the flood risk listSS4 3BJ: not on the flood risk listSS4 3BL: not on the flood risk listSS4 3BN: not on the flood risk listSS4 3BP: not on the flood risk listSS4 3BQ: not on the flood risk listSS4 3BR: not on the flood risk listSS4 3BS: not on the flood risk listSS4 3BU: not on the flood risk listSS4 3BW: not on the flood risk listSS4 3BX: not on the flood risk listSS4 3BY: not on the flood risk listSS4 3BZ: not on the flood risk listSS4 3DA: not on the flood risk listSS4 3DB: not on the flood risk listSS4 3DD: not on the flood risk listSS4 3DF: not on the flood risk listSS4 3DG: not on the flood risk listSS4 3DH: not on the flood risk listSS4 3DJ: not on the flood risk listSS4 3DP: not on the flood risk listSS4 3DR: not on the flood risk listSS4 3DS: not on the flood risk listSS4 3DT: not on the flood risk listSS4 3DU: not on the flood risk listSS4 3DW: not on the flood risk listSS4 3DX: not on the flood risk listSS4 3DY: not on the flood risk listSS4 3DZ: not on the flood risk listSS4 3EB: not on the flood risk listSS4 3ED: not on the flood risk listSS4 3EE: not on the flood risk listSS4 3EF: not on the flood risk listSS4 3EG: not on the flood risk listSS4 3EH: not on the flood risk listSS4 3EJ: not on the flood risk listSS4 3EL: not on the flood risk listSS4 3EN: not on the flood risk listSS4 3EP: not on the flood risk listSS4 3EQ: not on the flood risk listSS4 3ER: not on the flood risk listSS4 3ES: not on the flood risk listSS4 3ET: not on the flood risk listSS4 3EU: not on the flood risk listSS4 3EW: not on the flood risk listSS4 3EX: not on the flood risk listSS4 3EY: not on the flood risk listSS4 3FA: not on the flood risk listSS4 3FG: not on the flood risk listSS4 3FH: not on the flood risk listSS4 3FL: not on the flood risk listSS4 3FN: not on the flood risk listSS4 3FP: not on the flood risk listSS4 3FR: not on the flood risk listSS4 3FS: not on the flood risk listSS4 3HA: not on the flood risk listSS4 3HB: not on the flood risk listSS4 3HD: not on the flood risk listSS4 3HE: not on the flood risk listSS4 3HF: not on the flood risk listSS4 3HH: not on the flood risk listSS4 3HJ: not on the flood risk listSS4 3HN: not on the flood risk listSS4 3HQ: not on the flood risk listSS4 3HS: not on the flood risk listSS4 3HX: not on the flood risk listSS4 3HY: not on the flood risk listSS4 3JA: not on the flood risk listSS4 3JD: not on the flood risk listSS4 3JE: not on the flood risk listSS4 3JF: not on the flood risk listSS4 3JJ: not on the flood risk listSS4 3JR: not on the flood risk listSS4 3JS: not on the flood risk listSS4 3JW: not on the flood risk listSS4 3JY: not on the flood risk listSS4 3JZ: not on the flood risk listSS4 3LA: not on the flood risk listSS4 3LB: not on the flood risk listSS4 3LN: not on the flood risk listSS4 3LW: not on the flood risk listSS4 3PA: not on the flood risk listSS4 3PD: not on the flood risk listSS4 3PE: not on the flood risk listSS4 3PF: not on the flood risk listSS4 3PG: not on the flood risk listSS4 3PH: not on the flood risk listSS4 3PJ: not on the flood risk listSS4 3PL: not on the flood risk listSS4 3PN: not on the flood risk listSS4 3PR: not on the flood risk listSS4 3PS: not on the flood risk listSS4 3PU: not on the flood risk listSS4 3PW: not on the flood risk listSS4 3PX: not on the flood risk listSS4 3PY: not on the flood risk listSS4 3PZ: not on the flood risk listSS4 3QB: not on the flood risk listSS4 3QD: not on the flood risk listSS4 3QF: not on the flood risk listSS4 3QH: not on the flood risk listSS4 3QJ: not on the flood risk listSS4 3QN: not on the flood risk listSS4 3QQ: not on the flood risk listSS4 3QS: not on the flood risk listSS4 3QT: not on the flood risk listSS4 3QW: not on the flood risk listSS4 3RA: not on the flood risk listSS4 3RB: not on the flood risk listSS4 3RD: not on the flood risk listSS4 3RE: not on the flood risk listSS4 3RF: not on the flood risk listSS4 3RH: not on the flood risk listSS4 3RJ: not on the flood risk listSS4 3RL: not on the flood risk listSS4 3RN: not on the flood risk listSS4 3RP: not on the flood risk listSS4 3RQ: not on the flood risk listSS4 3RU: not on the flood risk listSS4 3RW: not on the flood risk listSS4 3RX: not on the flood risk listSS4 3RY: not on the flood risk listSS4 3RZ: not on the flood risk listSS4 3SA: not on the flood risk listSS4 3TB: not on the flood risk listSS4 3TF: not on the flood risk listSS4 3TH: not on the flood risk listSS4 1HZ: very low flood risk onlySS4 1JN: very low flood risk onlySS4 1NF: very low flood risk onlySS4 2EG: very low flood risk onlySS4 2EL: very low flood risk onlySS4 2EP: very low flood risk onlySS4 2EQ: very low flood risk onlySS4 3JN: very low flood risk onlySS4 3JP: very low flood risk onlySS4 3JU: very low flood risk onlySS4 3LY: very low flood risk onlySS4 3RR: very low flood risk onlySS4 3RT: very low flood risk onlySS4 3SE: very low flood risk onlySS4 1AJ: low flood risk at worstSS4 1AP: low flood risk at worstSS4 1AX: low flood risk at worstSS4 1BB: low flood risk at worstSS4 1RB: low flood risk at worstSS4 1HD: low flood risk at worstSS4 1HN: low flood risk at worstSS4 1HP: low flood risk at worstSS4 1HR: low flood risk at worstSS4 1JF: low flood risk at worstSS4 1JG: low flood risk at worstSS4 1NH: low flood risk at worstSS4 1NJ: low flood risk at worstSS4 1PP: low flood risk at worstSS4 1YG: low flood risk at worstSS4 2DJ: low flood risk at worstSS4 2DL: low flood risk at worstSS4 2DQ: low flood risk at worstSS4 2DW: low flood risk at worstSS4 2DY: low flood risk at worstSS4 2DZ: low flood risk at worstSS4 3AD: low flood risk at worstSS4 3BF: low flood risk at worstSS4 3JL: low flood risk at worstSS4 3JX: low flood risk at worstSS4 3LS: low flood risk at worstSS4 3LT: low flood risk at worstSS4 3RG: low flood risk at worstSS4 3RS: low flood risk at worstSS4 1AU: medium flood risk at worstSS4 1BL: medium flood risk at worstSS4 1HB: medium flood risk at worstSS4 1NL: medium flood risk at worstSS4 1NN: medium flood risk at worstSS4 1NP: medium flood risk at worstSS4 1NR: medium flood risk at worstSS4 1NS: medium flood risk at worstSS4 1PR: medium flood risk at worstSS4 2AU: medium flood risk at worstSS4 3JT: medium flood risk at worstSS4 3LZ: medium flood risk at worstSS4 1BS: high flood riskSS4 1FQ: high flood riskSS4 1HA: high flood riskSS4 1JU: high flood riskSS4 1LH: high flood riskSS4 1LN: high flood riskSS4 1LW: high flood riskSS4 2AA: high flood riskSS4 2AJ: high flood riskSS4 2AN: high flood riskSS4 2AQ: high flood riskSS4 2AR: high flood riskSS4 2AT: high flood riskSS4 2AX: high flood riskSS4 2BB: high flood riskSS4 2BF: high flood riskSS4 2BH: high flood riskSS4 2DE: high flood riskSS4 2DP: high flood riskSS4 2DR: high flood riskSS4 2DT: high flood riskSS4 2DU: high flood riskSS4 2DX: high flood riskSS4 2ED: high flood riskSS4 2EF: high flood riskSS4 2EJ: high flood riskSS4 2ER: high flood riskSS4 2ES: high flood riskSS4 2EY: high flood riskSS4 2HA: high flood riskSS4 2HD: high flood riskSS4 2HF: high flood risk RochfordAshingdon 6 postcodes at high or medium risk, outlined: this goes to SS4 1BS, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in SS4, by flood risk Of the 591 postcodes in SS4 that ONS places, 33 have a home or business at high risk, 14 are at medium risk at worst, 36 are at low risk at worst, 17 are at very low risk only and 491 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Rochford, Ashingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. RochfordAshingdon
  • A home or business at high risk: 33
  • At medium risk at worst: 14
  • At low risk at worst: 36
  • At very low risk only: 17
  • Not on the at-risk list: 491
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 591 postcodes in SS4 that ONS places, 33 have a home or business at high risk, 14 are at medium risk at worst, 36 are at low risk at worst, 17 are at very low risk only and 491 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 51.5930, longitude 0.7113. 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

33 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.

Where the postcodes at high or medium risk lie together

What broadband can you get in SS4?

Ofcom reports on 555 of the 591 postcodes in SS4. At 486 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 gigabit486 of 555
Postcodes where every home can get superfast525 of 555
Postcodes where some cannot get decent broadband1 of 555

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 SS4 at risk of flooding?

100 of the 591 postcodes in SS4 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 247 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 100 of 591 postcodes High: 182Medium: 65Low: 271Very low: 374

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 SS4?

Homes in SS4 sold for a typical £370,000 in the 12 months to August 2026, across 281 sales, no change on the 12 months before, HM Land Registry's figures show.

£370,000 typical price, the 12 months to August 2026
12 months to August 2025
£370,000
12 months to August 2026
£370,000

■ no change on the 12 months before

Detached£498,000 77 sales
Semi-detached£365,000 138 sales
Terraced£325,000 25 sales
Flat or maisonette£165,000 41 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 SS4

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

UK postcode format explained

Places in SS4

Towns and villages with postcodes in SS4, and how many each has here.

Who covers SS4

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

  • Southend East and Rochford414
  • Rayleigh and Wickford177

Police force areas

  • Essex591

Next to SS4

"Next to" is by number: the districts before and after SS4 in the SS area.

Check a postcode

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