SS99 postcode area guide — Southend-on-Sea
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SS99 postcode district in Southend-on-Sea — every official dataset on one page.
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Where is SS99?
Broadband & internet speeds in SS99
Excellent coverage
Superfast (30Mb+)
100%
Ultrafast (300Mb+)
100%
Gigabit-capable
100%
Below USO (10Mb)
0%
Broadband availability in the SS99 postcode district (Southend-on-Sea) is Excellent — gigabit-capable full fibre is widely available. Across the 4 postcodes Ofcom measures in SS99, superfast broadband (30 Mbit/s or faster) reaches 100% of premises and gigabit-capable lines are available to 100%.
Around 0% of premises in SS99 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.
Sample postcodes in SS99
| Postcode | Superfast | Gigabit |
|---|---|---|
| SS99 1AA | 100% | 100% |
| SS99 1BF | 100% | 100% |
| SS99 1BH | 100% | 100% |
| SS99 1BL | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Southend-on-Sea
Ofcom's coverage model for the wider Southend-on-sea district (87,764 premises):
4G indoors — all networks
96.8%
4G outdoors — all networks
100%
5G outdoors — all networks
60.4%
Voice indoors — all networks
99.5%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in SS99
Police recorded 956 incidents within about a mile of the centre of SS99 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 378 | 39.5% |
| Anti-social behaviour | 127 | 13.3% |
| Shoplifting | 111 | 11.6% |
| Criminal damage & arson | 67 | 7.0% |
| Drugs | 56 | 5.9% |
| Other theft | 55 | 5.8% |
| Public order | 55 | 5.8% |
| Vehicle crime | 31 | 3.2% |
Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).
Who lives here? Southend-on-Sea demographics
Census 2021 figures for the wider Southend-on-Sea district (180,686 residents, 78,344 households):
| Age profile | |
|---|---|
| Under 15 | 19% |
| 15–29 | 22% |
| 30–44 | 20.3% |
| 45–64 | 19.6% |
| 65+ | 19.1% |
| Housing tenure | |
|---|---|
| Owner-occupied | 61.3% |
| Private rented | 26.6% |
| Social rented | 5.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around SS99
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Southend YMCA Community School | Not applicable | 14–18 | 31 | SS2 6LH |
| Bournemouth Park Academy | Primary | 3–11 | 534 | SS2 5JN |
| St Mary's, Prittlewell, CofE Primary School | Primary | 4–11 | 611 | SS2 6JH |
| Sutton House Academy | Not applicable | 5–16 | 82 | SS2 5LG |
| Victory Park Academy | Not applicable | 5–16 | 58 | SS2 5LG |
| Beis Chinuch Lebonos Westcliff | Not applicable | 3–11 | 103 | SS0 7AH |
| St Helen's Catholic Primary School | Primary | 4–11 | 420 | SS0 7AY |
| The Westborough School | Primary | 3–11 | 443 | SS0 9BS |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Phone area codes for Southend-on-Sea
Landlines around SS99 typically use:
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What's it like living in SS99?
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Postcodes in SS99
Neighbouring districts
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Frequently asked questions
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Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.