SO23 postcode area guide — Winchester

Where is SO23?

Broadband & internet speeds in SO23

Strong coverage

Broadband availability in the SO23 postcode district (Winchester) is Strong — superfast is near-universal and gigabit is rolling out. Across the 703 postcodes Ofcom measures in SO23, superfast broadband (30 Mbit/s or faster) reaches 95.9% of premises and gigabit-capable lines are available to 58.1%.

Around 0% of premises in SO23 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 SO23

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around Winchester

Ofcom's coverage model for the wider Winchester district (61,679 premises):

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in SO23

Police recorded 265 incidents within about a mile of the centre of SO23 in May 2026 (latest published street-level data). The breakdown:

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).

House prices in SO23

Based on 248 sales registered with HM Land Registry in the last 12 months, the median sold price in SO23 is £490,000, down 0.6% on the previous year (£493,000).

Latest recorded sales in SO23

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? Winchester demographics

Census 2021 figures for the wider Winchester district (127,444 residents, 51,712 households):

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around SO23

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in SO23

286 rated food businesses operate in SO23. 224 hold the top rating of 5, 30 are rated 4, and none are currently rated 2 or below.

Among the 5-rated: 2Tees Food, Abbey Mill Winchester, Abbotts Barton Nursing Home, Alfies, All Saints CofE Primary School.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in SO23

From a sample of 127 Energy Performance Certificates across 10 SO23 postcodes, the most common rating is band D (average band D). 43% of sampled homes are rated C or better.

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for Winchester

Landlines around SO23 typically use:

Had a call from an unknown number? Use our free UK phone number checker to see who called.

What's it like living in SO23?

Postcodes in SO23

Neighbouring districts

All Southampton (SO) postcode districts ›

Frequently asked questions

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.