PO4 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 728 postcodes across 3 sectors in Portsmouth.
Full fibre
0%
Gigabit
97%
Superfast
100%
Postcodes
728
Portsmouth's PO4 is the city's densest broadband zone: 97.2% of 728 postcodes reach gigabit, with 99.9% superfast coverage.
Broadband speeds in PO4
Share of PO4 premises by the fastest download speed available, averaged across all 728 postcodes in the district.
PO4 represents Portsmouth's cable heartland, where dense networks create competitive markets. Superfast reaches 99.9% (nearly every postcode), while gigabit sits at 96.9%. The speed profile is extreme: 97.2% enjoy gigabit (300+), just 2.7% occupy the 30-300 Mbps band, zero below 10 Mbps. Cable networks cluster densely in this urban sector, creating competitive provider situations at gigabit speed tiers. For residents, switching choices centre on price, service quality, and contract terms rather than availability concerns. This postcode shows urban cable density: many providers to choose from, competitive pricing, no access constraints, and reliable service across all premise types. Multiple providers routinely offer gigabit packages.
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
0%
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
PO4 splits into 3 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 |
|---|---|---|---|---|
| PO4 0 | 210 | 100% | 0% | 98% |
| PO4 8 | 270 | 100% | 0% | 96% |
| PO4 9 | 248 | 100% | 0% | 96% |
All PO4 0 postcodes (210)
All PO4 8 postcodes (270)
All PO4 9 postcodes (248)
Best deals
Compare broadband deals in PO4
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Living in Portsmouth
Portsmouth's cable flagship. Broadband is not a concern for residential decisions.
Remote worker score
55/100
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
PO4 broadband FAQs
Is gigabit essentially standard here?
Yes. 96.9% of postcodes are gigabit-capable, making it default rather than premium.
What about the 3.1% outside gigabit reach?
Nearly all sit in the 30-300 Mbps tier. Only zero fall below 10 Mbps.
Should broadband availability influence my property choice?
No. Focus on service quality, pricing, and provider reputation instead.
How does PO4 compare to other Portsmouth postcodes?
It is among the densest, with 96.9% gigabit rivalling or exceeding neighbouring codes.
Neighbouring districts
Check your exact postcode
Every postcode in PO4 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