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, and which are new since 2020

Map of every postcode in SS4, by new since 2020 Of the 591 postcodes in SS4 that ONS places, 33 are new since 2020 and 558 were in use before 2020. 2 groups of new postcodes are outlined: 17 new postcodes since 2020; 7 new postcodes since 2020. Places named: Rochford, Ashingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. SS4 1AB: before 2020SS4 1AD: before 2020SS4 1AE: before 2020SS4 1AF: before 2020SS4 1AG: before 2020SS4 1AH: before 2020SS4 1AJ: before 2020SS4 1AL: before 2020SS4 1AP: before 2020SS4 1AQ: before 2020SS4 1AT: before 2020SS4 1AU: before 2020SS4 1AX: before 2020SS4 1AY: before 2020SS4 1BA: before 2020SS4 1BB: before 2020SS4 1BL: before 2020SS4 1BQ: before 2020SS4 1BS: before 2020SS4 1BW: before 2020SS4 1DD: before 2020SS4 1DE: before 2020SS4 1DF: before 2020SS4 1DJ: before 2020SS4 1DL: before 2020SS4 1DN: before 2020SS4 1DP: before 2020SS4 1DQ: before 2020SS4 1DT: before 2020SS4 1DU: before 2020SS4 1DX: before 2020SS4 1DZ: before 2020SS4 1EB: before 2020SS4 1ED: before 2020SS4 1EE: before 2020SS4 1EF: before 2020SS4 1EG: before 2020SS4 1EH: before 2020SS4 1EN: before 2020SS4 1EP: before 2020SS4 1EQ: before 2020SS4 1ER: before 2020SS4 1ES: before 2020SS4 1EW: before 2020SS4 1EX: before 2020SS4 1FA: before 2020SS4 1FF: before 2020SS4 1FJ: before 2020SS4 1FL: before 2020SS4 1FN: before 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2020SS4 3BH: before 2020SS4 3BJ: before 2020SS4 3BL: before 2020SS4 3BN: before 2020SS4 3BP: before 2020SS4 3BQ: before 2020SS4 3BR: before 2020SS4 3BS: before 2020SS4 3BU: before 2020SS4 3BW: before 2020SS4 3BX: before 2020SS4 3BY: before 2020SS4 3BZ: before 2020SS4 3DA: before 2020SS4 3DB: before 2020SS4 3DD: before 2020SS4 3DF: before 2020SS4 3DG: before 2020SS4 3DH: before 2020SS4 3DJ: before 2020SS4 3DR: before 2020SS4 3DS: before 2020SS4 3DT: before 2020SS4 3DU: before 2020SS4 3DW: before 2020SS4 3DX: before 2020SS4 3DY: before 2020SS4 3DZ: before 2020SS4 3EB: before 2020SS4 3ED: before 2020SS4 3EE: before 2020SS4 3EF: before 2020SS4 3EG: before 2020SS4 3EH: before 2020SS4 3EJ: before 2020SS4 3EL: before 2020SS4 3EN: before 2020SS4 3EP: before 2020SS4 3EQ: before 2020SS4 3ER: before 2020SS4 3ES: before 2020SS4 3ET: before 2020SS4 3EU: before 2020SS4 3EW: before 2020SS4 3EX: before 2020SS4 3EY: before 2020SS4 3FA: before 2020SS4 3FG: before 2020SS4 3FH: before 2020SS4 3FL: before 2020SS4 3FN: before 2020SS4 3HA: before 2020SS4 3HB: before 2020SS4 3HD: before 2020SS4 3HE: before 2020SS4 3HF: before 2020SS4 3HH: before 2020SS4 3HJ: before 2020SS4 3HN: before 2020SS4 3HQ: before 2020SS4 3HS: before 2020SS4 3HX: before 2020SS4 3HY: before 2020SS4 3JA: before 2020SS4 3JD: before 2020SS4 3JE: before 2020SS4 3JF: before 2020SS4 3JJ: before 2020SS4 3JL: before 2020SS4 3JN: before 2020SS4 3JP: before 2020SS4 3JR: before 2020SS4 3JS: before 2020SS4 3JT: before 2020SS4 3JU: before 2020SS4 3JW: before 2020SS4 3JX: before 2020SS4 3JY: before 2020SS4 3JZ: before 2020SS4 3LA: before 2020SS4 3LB: before 2020SS4 3LN: before 2020SS4 3LS: before 2020SS4 3LT: before 2020SS4 3LW: before 2020SS4 3LZ: before 2020SS4 3PA: before 2020SS4 3PD: before 2020SS4 3PE: before 2020SS4 3PF: before 2020SS4 3PG: before 2020SS4 3PH: before 2020SS4 3PJ: before 2020SS4 3PL: before 2020SS4 3PN: before 2020SS4 3PR: before 2020SS4 3PS: before 2020SS4 3PU: before 2020SS4 3PW: before 2020SS4 3PX: before 2020SS4 3PY: before 2020SS4 3PZ: before 2020SS4 3QB: before 2020SS4 3QD: before 2020SS4 3QF: before 2020SS4 3QH: before 2020SS4 3QJ: before 2020SS4 3QN: before 2020SS4 3QQ: before 2020SS4 3QS: before 2020SS4 3QT: before 2020SS4 3QW: before 2020SS4 3RA: before 2020SS4 3RB: before 2020SS4 3RD: before 2020SS4 3RE: before 2020SS4 3RF: before 2020SS4 3RG: before 2020SS4 3RH: before 2020SS4 3RJ: before 2020SS4 3RL: before 2020SS4 3RN: before 2020SS4 3RP: before 2020SS4 3RQ: before 2020SS4 3RR: before 2020SS4 3RS: before 2020SS4 3RT: before 2020SS4 3RU: before 2020SS4 3RW: before 2020SS4 3RX: before 2020SS4 3RY: before 2020SS4 3RZ: before 2020SS4 3SA: before 2020SS4 3SE: before 2020SS4 3TB: before 2020SS4 3TF: before 2020SS4 3TH: before 2020SS4 1GA: before 2020SS4 1HL: before 2020SS4 2DH: before 2020SS4 3LD: before 2020SS4 1AN: new since 2020SS4 1BG: new since 2020SS4 1BJ: new since 2020SS4 1PR: new since 2020SS4 1UR: new since 2020SS4 1UW: new since 2020SS4 1WN: new since 2020SS4 1WW: new since 2020SS4 1XT: new since 2020SS4 1XY: new since 2020SS4 1YD: new since 2020SS4 1YL: new since 2020SS4 1YP: new since 2020SS4 1YR: new since 2020SS4 1YS: new since 2020SS4 1YT: new since 2020SS4 1YU: new since 2020SS4 1YW: new since 2020SS4 1YX: new since 2020SS4 1ZA: new since 2020SS4 1ZD: new since 2020SS4 1ZE: new since 2020SS4 1ZF: new since 2020SS4 3FP: new since 2020SS4 3FR: new since 2020SS4 3FS: new since 2020SS4 1YH: new since 2020SS4 1YJ: new since 2020SS4 3FQ: new since 2020 RochfordAshingdon 17 new postcodes since 2020, outlined: this goes to SS4 1ZH, the newest of them17 new postcodes since 20207 new postcodes since 2020, outlined: this goes to SS4 1XY, the newest of them7 new postcodes since 2020 Map of every postcode in SS4, by new since 2020 Of the 591 postcodes in SS4 that ONS places, 33 are new since 2020 and 558 were in use before 2020. 2 groups of new postcodes are outlined: 17 new postcodes since 2020; 7 new postcodes since 2020. Places named: Rochford, Ashingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. RochfordAshingdon
  • New since 2020: 33
  • In use before 2020: 558
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 591 postcodes in SS4 that ONS places, 33 are new since 2020 and 558 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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

Where the new postcodes 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
£370,000 12 months to August 2025
■ 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

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 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.

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