CO12 postcode
Broadband in CO12 4TX
Harwich, Tendring
Superfast broadband covers 100% of premises here.
Free, independent comparison · Ofcom verified data · Updated 5 March 2026
Flood Risk
Medium
Fibre (FTTP)
No
Best speed
~30 Mbps
Speed Calculator
Adjust the options below to see how much broadband speed your household needs.
HD uses ~5 Mbps per person. 4K uses ~25 Mbps.
Each person on calls needs around 10 Mbps.
Competitive gaming needs low latency as much as raw speed.
Cameras, thermostats, speakers and similar devices each use a few Mbps.
The best available speed at CO12 4TX is ~30 Mbps. That covers your 14 Mbps estimate.
Speed Test
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Broadband availability
Source: Ofcom Connected Nations 2025 (Jul 2025)
| Technology | Available | Coverage | Typical Speed |
|---|---|---|---|
| Standard (ADSL) | 100% | 100% | 10-20 Mbps |
| Superfast (30+ Mbps) | 100% | 100% | 30-80 Mbps |
| Ultrafast (100+ Mbps) | 0% | 0% | 100-300 Mbps |
| Full Fibre (FTTP) | N/A | N/A | 300-900 Mbps |
| Gigabit | 0% | 0% | 900-1,000 Mbps |
Speed Distribution at CO12 4TX
Source: Ofcom Connected Nations 2025
Mobile coverage
4G & 5G coverage · Ofcom Connected Nations 2025
4G Outdoor
4G Indoor
5G Outdoor
Networks with 4G
Schools nearby
Nearest schools within 5 miles · Ofsted ratings as at Jan 2026
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Flood risk
🟠
Flood risk: Medium
This postcode is in undefined — medium risk of flooding from rivers and sea.
Flood Zone
Risk Level
Medium
Air quality
Particulate matter & nitrogen dioxide levels
air quality
Air quality data not available.
WHO guideline: 15 μg/m³
WHO guideline: 45 μg/m³
WHO guideline: 25 μg/m³
Transport links
Nearest train stations and towns
Nearest train stations
No train stations found within 15 miles
Council tax bands
Band distribution for Tendring
Most common: Band
Annual council tax estimates for , 2024/25
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This is the area guide for CO12 4TX, located in Harwich (Tendring). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.
Superfast coverage here stands at 100%. Nationally, 93% of UK premises have access. Coverage at this postcode is strong.
Here is how broadband speeds break down across premises at CO12 4TX. 100% of connections fall in the 30 to 300 Mbps range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls.
Translating the numbers at CO12 4TX into daily use gives a clearer picture. Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.
FWA broadband has not reached CO12 4TX yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.
The USO guarantees every UK home at least 10 Mbps. At CO12 4TX, 0% of properties do not meet this threshold. Every property here meets the minimum standard. That is not the case everywhere. Next-generation access (NGA) reaches 100% of the area. NGA typically means speeds of 24 Mbps or above.
Flood risk at CO12 4TX is rated Medium. Check Environment Agency flood maps for detailed information. Specialist flood insurance may be needed.
The three most common bands are D (25%), C (20%), E (20%). Band D corresponds to 1991 property values of £68,001 to £88,000. Current values are typically much higher. The spread across mid-range bands suggests a varied housing stock.
4G outdoor coverage at CO12 4TX reaches 95%. Indoor 4G drops to 85%. Some signal loss indoors is normal. Most calls and data should still work inside. Coverage data covers EE, O2, Three, Vodafone. Check each operator individually, as coverage varies by network.
Suitability scores for CO12 4TX: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
CO12 4TX falls within the Tendring local authority area. The immediate area is Harwich, a distinct community within the wider district. The CO12 postcode area contains 628 postcodes on this site. Superfast broadband across CO12 ranges from 0% to 100%. CO12 4TX is close to the area average of 97%.
How does CO12 4TX compare to its neighbours? CO12 4NA (0.04 miles, harwich) has 100% superfast coverage and 100% gigabit. CO12 4NH (0.04 miles, harwich) has 100% superfast coverage and 100% gigabit. CO12 4UF (0.04 miles, harwich) has 100% superfast coverage and 0% gigabit. CO12 4TY (0.04 miles, harwich) has 100% superfast coverage and 0% gigabit. Coverage is broadly similar across these neighbouring postcodes.
Broadband availability varies by provider and by property. At CO12 4TX, check individual coverage tools from BT, Sky, Virgin Media, and local operators. If fibre is unavailable, consider 4G home broadband or satellite as alternatives. Speeds may still be adequate for most uses. Compare contract lengths, total costs over the term, and exit fees. The cheapest monthly rate is not always the best deal.
Every part of Harwich has its own feel. This data gives you the factual starting point. A visit fills in the rest.
Looking at the overall picture for CO12 4TX, a few things are worth highlighting. Connectivity at CO12 4TX is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Tendring as a local authority area has its own planning priorities, council services, and infrastructure investment plans. Check the council website for the latest. The data covers what can be measured. Harwich has its own character that numbers alone cannot capture. Use these figures as a filter, then visit to get the full picture.
Data sources include Ofcom (broadband and mobile), Land Registry (house prices), Police.uk (crime), Ofsted (schools), Environment Agency (flood risk), and Open-Meteo (air quality). Council tax data comes from the Valuation Office Agency. EPC data is from DLUHC. Transport data uses NaPTAN. Speed distribution figures are from Ofcom Connected Nations. All figures are the latest available at the time of writing.
Before making a decision about CO12 4TX, visit in person. Check the commute at rush hour. Try the mobile signal indoors. Look at local shops and green spaces. Ask about broadband reliability, not just speed. Data sets the scene, but real life fills in the gaps.
This covers the key data for CO12 4TX. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Harwich hub page. Bookmark this page and check back as new data arrives.
More local data is being added for this postcode
This page already has postcode-specific content, and more data-backed sections will appear as the remaining local datasets finish processing.
Frequently asked questions about CO12 4TX
What are the broadband speeds available at CO12 4TX?
Superfast broadband (30 Mbps+) is available to 100% of premises at CO12 4TX.
What is the average house price near CO12 4TX?
No recent house price data is available for CO12 4TX.
What is the flood risk for properties at CO12 4TX?
CO12 4TX has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the CO12 4TX area?
School data for CO12 4TX is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in CO12 4TX compare to other areas?
Crime data for this area is being updated.
How suitable is CO12 4TX for remote working?
CO12 4TX scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at CO12 4TX?
4G outdoor coverage at CO12 4TX is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near CO12 4TX?
EPC data for CO12 4TX is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at CO12 4TX?
Council tax band information for CO12 4TX is being updated.
How accessible are GP surgeries near CO12 4TX?
GP surgery data for CO12 4TX is being updated. Check NHS.uk for the latest.
What transport links are available near CO12 4TX?
Transport data for CO12 4TX is being updated.
Is CO12 4TX a suitable area for families?
CO12 4TX scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at CO12 4TX?
Air quality data for CO12 4TX is being updated.
How far is the nearest EV charging point from CO12 4TX?
EV charging data for CO12 4TX is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at CO12 4TX?
Full fibre availability at CO12 4TX is being updated. Check Openreach for the latest rollout status.
Area suitability scores
CO12 4TXRemote Worker
55Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.
Family
50Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.
Value for Money
50Based on broadband quality relative to average house price in the area.
Map
Area info
Parish
Harwich
District
Tendring
Region
Constituency
LSOA
E01033051
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