CB23 postcode area guide — Cambridge

Where is CB23?

Broadband & internet speeds in CB23

Strong coverage

Broadband availability in the CB23 postcode district (Cambridge) is Strong — superfast is near-universal and gigabit is rolling out. Across the 862 postcodes Ofcom measures in CB23, superfast broadband (30 Mbit/s or faster) reaches 93.3% of premises and gigabit-capable lines are available to 79.2%.

Around 0.2% of premises in CB23 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 CB23

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

Mobile signal around Cambridge

Ofcom's coverage model for the wider Cambridge district (61,788 premises):

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

Crime in CB23

Police recorded 29 incidents within about a mile of the centre of CB23 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 CB23

Based on 353 sales registered with HM Land Registry in the last 12 months, the median sold price in CB23 is £385,000, down 4.6% on the previous year (£403,750).

Latest recorded sales in CB23

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

Who lives here? Cambridge demographics

Census 2021 figures for the wider Cambridge district (145,674 residents, 52,474 households):

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

Schools in and around CB23

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 CB23

191 rated food businesses operate in CB23. 152 hold the top rating of 5, 22 are rated 4, and 3 are rated 2 or below.

Among the 5-rated: 19 - The Coffee House, abm catering @ Elsworth Primary School, abm Catering @ The Vine Inter Church, Amor Coffee Co, ARK FFF Coaching LLP.

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

Energy performance (EPC) in CB23

From a sample of 101 Energy Performance Certificates across 11 CB23 postcodes, the most common rating is band D (average band D). 50% 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 Cambridge

Landlines around CB23 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 CB23?

Postcodes in CB23

Neighbouring districts

All Cambridge (CB) 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.