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Postcode area report · 623 postcodes

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.

CO12 is a postcode district in Tendring, England, containing 623 live postcodes. Around 148,291 people live across the wider Tendring district. Over the last year the typical (median) sold price in CO12 has been £232,000.

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Where is CO12?

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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

PostcodeSuperfastGigabit
CO12 3AA100%100%
CO12 3AB100%96.7%
CO12 3AG100%100%
CO12 3AH100%86.4%
CO12 3AJ100%100%
CO12 3AL100%100%
CO12 3AP100%100%
CO12 3AR100%100%
CO12 3AS100%100%
CO12 3AT100%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:

CategoryIncidentsShare
Violence & sexual offences5340.2%
Criminal damage & arson1813.6%
Shoplifting1511.4%
Anti-social behaviour1410.6%
Public order96.8%
Other theft75.3%
Other crime64.5%
Burglary43.0%

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

DatePriceTypeStreetPostcode
21 May 2026£235,000TerracedHoward AvenueCO12 4UE
18 May 2026£160,000TerracedBirch AvenueCO12 4DA
15 May 2026£365,000DetachedChaffinch DriveCO12 4WL
15 May 2026£173,000TerracedGrafton RoadCO12 3BD
15 May 2026£234,000Semi-detachedWilliamsburg AvenueCO12 4FF
12 May 2026£180,000TerracedPortland AvenueCO12 3QW
8 May 2026£350,000DetachedRegimental WayCO12 5FE
8 May 2026£150,000FlatMain RoadCO12 3FS
5 May 2026£230,000TerracedHarbour CrescentCO12 3NJ
1 May 2026£290,000Semi-detachedMayes LaneCO12 5EJ

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

Who lives here? Tendring demographics

Census 2021 figures for the wider Tendring district (148,291 residents, 67,452 households):

Age profile
Under 1515.8%
15–2918.2%
30–4414.9%
45–6421.6%
65+29.6%
Housing tenure
Owner-occupied71.5%
Private rented19.9%
Social rented4.2%

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

Schools in and around CO12

SchoolPhaseAgesPupilsPostcode
Harwich and Dovercourt High SchoolSecondary11–161,075CO12 3TG
Chase Lane Primary School and NurseryPrimary3–11445CO12 4NB
The Mayflower Primary SchoolPrimary4–11356CO12 4AJ
Spring Meadow Primary School & NurseryPrimary2–11354CO12 4LB
Harwich Community Primary School and NurseryPrimary2–11222CO12 3NS
All Saints' Church of England Voluntary Aided Primary School, DovercourtPrimary4–11194CO12 4HT
St Michael's CofE Primary Academy, RamseyPrimary5–11130CO12 5EL
St Joseph's Catholic Primary SchoolPrimary5–11114CO12 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:

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What's it like living in CO12?

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Moving to CO12? Sort your connectivity first

We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Tendring — free, no-obligation quote.

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Postcodes in CO12

Neighbouring districts

All Colchester (CO) postcode districts ›

Frequently asked questions

Where is the CO12 postcode?
CO12 covers Tendring in England. It contains 623 live postcodes. Use the map and the postcode list on this page to pinpoint an exact address.
How much do houses cost in CO12?
Based on 259 sales recorded by HM Land Registry in the last 12 months, the median price paid in CO12 is £232,000. See the house-price section above for medians by property type and the most recent sales.
Is CO12 a safe area?
Police recorded 132 incidents within a mile of the centre of CO12 in May 2026, with Violence & sexual offences the most common category. Compare the breakdown above and check street-level detail on police.uk before drawing conclusions — a busy high street inflates raw counts.
What broadband can I get in CO12?
Ofcom Connected Nations puts superfast availability in CO12 at 96.8% of premises, with gigabit-capable lines reaching 73.5%. Enter a full postcode in the checker on this page for address-level availability.
Who lives in CO12?
In the wider Tendring district, 71% of households own their home, 20% rent privately and 4% are in social housing (Census 2021). The age profile and household counts are in the demographics section above.
How energy efficient are homes in CO12?
Across a sample of 110 Energy Performance Certificates in CO12, the most common rating is band D and the average is band D. 41 of the sampled homes are rated C or better. See the EPC section above for the full band breakdown.

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.

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