CO12 postcode area guide — Tendring
House prices, crime, broadband speeds, mobile signal, schools and demographics for the CO12 postcode district in Tendring — every official dataset on one page.
Check any UK postcode
Advertisement
Where is CO12?
Broadband & internet speeds in CO12
Strong coverage
Superfast (30Mb+)
96.8%
Ultrafast (300Mb+)
73.5%
Gigabit-capable
73.5%
Below USO (10Mb)
0.1%
Broadband availability in the CO12 postcode district (Tendring) is Strong — superfast is near-universal and gigabit is rolling out. Across the 623 postcodes Ofcom measures in CO12, superfast broadband (30 Mbit/s or faster) reaches 96.8% of premises and gigabit-capable lines are available to 73.5%.
Around 0.1% of premises in CO12 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 CO12
| Postcode | Superfast | Gigabit |
|---|---|---|
| CO12 3AA | 100% | 100% |
| CO12 3AB | 100% | 96.7% |
| CO12 3AG | 100% | 100% |
| CO12 3AH | 100% | 86.4% |
| CO12 3AJ | 100% | 100% |
| CO12 3AL | 100% | 100% |
| CO12 3AP | 100% | 100% |
| CO12 3AR | 100% | 100% |
| CO12 3AS | 100% | 100% |
| CO12 3AT | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Tendring
Ofcom's coverage model for the wider Tendring district (79,421 premises):
4G indoors — all networks
79.1%
4G outdoors — all networks
98.9%
5G outdoors — all networks
42.8%
Voice indoors — all networks
82.2%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in CO12
Police recorded 132 incidents within about a mile of the centre of CO12 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 53 | 40.2% |
| Criminal damage & arson | 18 | 13.6% |
| Shoplifting | 15 | 11.4% |
| Anti-social behaviour | 14 | 10.6% |
| Public order | 9 | 6.8% |
| Other theft | 7 | 5.3% |
| Other crime | 6 | 4.5% |
| Burglary | 4 | 3.0% |
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 CO12
Based on 259 sales registered with HM Land Registry in the last 12 months, the median sold price in CO12 is £232,000, down 7.2% on the previous year (£250,000).
Detached
£335,000
72 sales
Semi-detached
£235,000
78 sales
Terraced
£185,000
87 sales
Flat / maisonette
£110,000
20 sales
Latest recorded sales in CO12
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 21 May 2026 | £235,000 | Terraced | Howard Avenue | CO12 4UE |
| 18 May 2026 | £160,000 | Terraced | Birch Avenue | CO12 4DA |
| 15 May 2026 | £365,000 | Detached | Chaffinch Drive | CO12 4WL |
| 15 May 2026 | £173,000 | Terraced | Grafton Road | CO12 3BD |
| 15 May 2026 | £234,000 | Semi-detached | Williamsburg Avenue | CO12 4FF |
| 12 May 2026 | £180,000 | Terraced | Portland Avenue | CO12 3QW |
| 8 May 2026 | £350,000 | Detached | Regimental Way | CO12 5FE |
| 8 May 2026 | £150,000 | Flat | Main Road | CO12 3FS |
| 5 May 2026 | £230,000 | Terraced | Harbour Crescent | CO12 3NJ |
| 1 May 2026 | £290,000 | Semi-detached | Mayes Lane | CO12 5EJ |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Advertisement
Who lives here? Tendring demographics
Census 2021 figures for the wider Tendring district (148,291 residents, 67,452 households):
| Age profile | |
|---|---|
| Under 15 | 15.8% |
| 15–29 | 18.2% |
| 30–44 | 14.9% |
| 45–64 | 21.6% |
| 65+ | 29.6% |
| Housing tenure | |
|---|---|
| Owner-occupied | 71.5% |
| Private rented | 19.9% |
| Social rented | 4.2% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around CO12
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Harwich and Dovercourt High School | Secondary | 11–16 | 1,075 | CO12 3TG |
| Chase Lane Primary School and Nursery | Primary | 3–11 | 445 | CO12 4NB |
| The Mayflower Primary School | Primary | 4–11 | 356 | CO12 4AJ |
| Spring Meadow Primary School & Nursery | Primary | 2–11 | 354 | CO12 4LB |
| Harwich Community Primary School and Nursery | Primary | 2–11 | 222 | CO12 3NS |
| All Saints' Church of England Voluntary Aided Primary School, Dovercourt | Primary | 4–11 | 194 | CO12 4HT |
| St Michael's CofE Primary Academy, Ramsey | Primary | 5–11 | 130 | CO12 5EL |
| St Joseph's Catholic Primary School | Primary | 5–11 | 114 | CO12 3SU |
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 CO12
137 rated food businesses operate in CO12. 89 hold the top rating of 5, 23 are rated 4, and 4 are rated 2 or below.
Among the 5-rated: Alexandra House, All Saints C of E (VA) Primary School, All Saints School, Alma, Amz&Son.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in CO12
From a sample of 110 Energy Performance Certificates across 8 CO12 postcodes, the most common rating is band D (average band D). 37% of sampled homes are rated C or better.
Band B
12%
Band C
25%
Band D
45%
Band E
15%
Band F
3%
Band G
1%
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 Tendring
Landlines around CO12 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 CO12?
Be the first to rate CO12 (Tendring).
How would you rate living in CO12 (Tendring)?
Moving to CO12? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Tendring — free, no-obligation quote.
Postcodes in CO12
Neighbouring districts
All Colchester (CO) postcode districts ›
Frequently asked questions
Where is the CO12 postcode?
How much do houses cost in CO12?
Is CO12 a safe area?
What broadband can I get in CO12?
Who lives in CO12?
How energy efficient are homes in CO12?
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.
