CM19 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 391 postcodes across 2 sectors in Harlow.
Full fibre
0%
Gigabit
77%
Superfast
91%
Postcodes
391
CM19 covers 391 postcodes in East Hertfordshire. Gigabit availability stands at 76.5%, whilst 3.7% of postcodes experience below-10Mbps speeds.
Broadband speeds in CM19
Share of CM19 premises by the fastest download speed available, averaged across all 391 postcodes in the district.
Superfast coverage spans 90.8% of premises. Gigabit availability is 76.9%, with 76.5% capable of true gigabit speeds; the 0.4% gap reflects ultrafast-only services on fibre infrastructure without gigabit. The speed split shows 76.9% achieving 300 Mbps or above, with 13.9% on 30-300 Mbps. Notably, 3.7% sit below 10 Mbps, the highest concentration in the Essex districts and suggesting pockets of legacy copper infrastructure. Below-USO coverage is minimal at 0.2%. Cable deployment is strong in parts of CM19, but pockets of older infrastructure remain. These areas would benefit from infrastructure upgrades.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
<1%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
CM19 splits into 2 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| CM19 4 | 197 | 100% | 0% | 90% |
| CM19 5 | 194 | 82% | 0% | 62% |
All CM19 4 postcodes (197)
All CM19 5 postcodes (194)
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Living in Harlow
CM19 is a transitional zone. Cable deployment is strong but not complete. A larger minority of premises remain on older infrastructure, leading to the elevated below-10Mbps tail.
Remote worker score
53/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
CM19 broadband FAQs
Why does CM19 have more below-10Mbps postcodes than neighbouring areas?
At 3.7%, this likely reflects legacy copper infrastructure and older housing stock outside cable footprint zones.
Is gigabit widely accessible?
Gigabit reaches 76.5% of postcodes, broadly in line with other East Hertfordshire districts.
What proportion of premises depend on older technology?
Around 13.9% occupy the 30-300 Mbps superfast range on fibre-to-the-cabinet or copper.
Should premises research postcode-specific coverage?
Yes, particularly for postcodes outside the main cable zones where speeds vary more widely.
Neighbouring districts
Check your exact postcode
Every postcode in CM19 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources