SS3 postcode district: Southend-on-Sea and around

SS3 is a postcode district in England, with 609 postcodes in use in 3 sectors. It has postcodes in Southend-on-Sea and Great Wakering. It is split between 2 councils: Southend-on-Sea (403 postcodes) and Rochford (206). 206 of its 609 postcodes are in Essex. ONS lists no county for the other 403.

Postcodes in use: 609
Sectors: 3
Councils: 2 councils
Places: 2 places

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

Every postcode in SS3, by gigabit broadband

No home or business can get gigabit: 37
Some can get gigabit: 47
Every home and business can get gigabit: 506
Ofcom gives no figure: 19
Outline: where 5 or more postcodes without gigabit lie together

Of the 609 postcodes in SS3 that ONS places, 37 have no home or business that can get gigabit, 47 have some that can, 506 can all get it and 19 have no Ofcom figure.

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 160 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 51.5432, longitude 0.7895. 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; gigabit: Ofcom, Connected Nations, Spring 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

Postcodes without gigabit

37 postcodes here have no gigabit. These are the 12 first in postcode order.

SS3 0AT SS3 0AU SS3 0AX SS3 0AY SS3 0AZ SS3 0BS SS3 0BX SS3 0BY SS3 0DE SS3 0DL SS3 0DP SS3 0DR

Where the postcodes without gigabit lie together

11 postcodes without gigabit, outlined on the map. SS3 0DX, is the one nearest the middle of them.

What broadband can you get in SS3?

Ofcom reports on 590 of the 609 postcodes in SS3. At 506 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 gigabit506 of 590

Postcodes where every home can get superfast555 of 590

Postcodes where some cannot get decent broadband1 of 590

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 SS3 at risk of flooding?

124 of the 609 postcodes in SS3 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 755 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 124 of 609 postcodes High: 532Medium: 223Low: 854Very low: 360

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 SS3?

Homes in SS3 sold for a typical £350,000 in the 12 months to August 2026, across 286 sales, no change on the 12 months before, HM Land Registry's figures show.

£350,000 typical price, the 12 months to August 2026

£350,000 12 months to August 2025

■ no change on the 12 months before

Detached £466,250 56 sales
Semi-detached £368,000 103 sales
Terraced £310,000 85 sales
Flat or maisonette £193,500 42 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