KA21 postcode area guide — North Ayrshire
House prices, crime, broadband speeds, mobile signal, schools and demographics for the KA21 postcode district in North Ayrshire — every official dataset on one page.
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Where is KA21?
Broadband & internet speeds in KA21
Excellent coverage
Superfast (30Mb+)
97.6%
Ultrafast (300Mb+)
90.2%
Gigabit-capable
90.2%
Below USO (10Mb)
0.1%
Broadband availability in the KA21 postcode district (North Ayrshire) is Excellent — gigabit-capable full fibre is widely available. Across the 369 postcodes Ofcom measures in KA21, superfast broadband (30 Mbit/s or faster) reaches 97.6% of premises and gigabit-capable lines are available to 90.2%.
Around 0.1% of premises in KA21 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 KA21
| Postcode | Superfast | Gigabit |
|---|---|---|
| KA21 5AA | 100% | 100% |
| KA21 5AB | 100% | 100% |
| KA21 5AE | 100% | 90% |
| KA21 5AF | 100% | 100% |
| KA21 5AG | 100% | 100% |
| KA21 5AH | 100% | 60% |
| KA21 5AJ | 100% | 100% |
| KA21 5AL | 100% | 100% |
| KA21 5AN | 100% | 100% |
| KA21 5AP | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around North Ayrshire
Ofcom's coverage model for the wider North Ayrshire district (74,667 premises):
4G indoors — all networks
91.4%
4G outdoors — all networks
98.2%
5G outdoors — all networks
37%
Voice indoors — all networks
93.5%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Food hygiene ratings in KA21
106 rated food businesses operate in KA21. 93 hold a Pass under the Food Hygiene Information Scheme used in Scotland, while 4 currently require improvement.
Among the Pass-rated: Aldi, Alex Bicket Ltd, Argyle Community Centre, Argyle Community Shop, Aroma Wok.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Phone area codes for North Ayrshire
Landlines around KA21 typically use:
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What's it like living in KA21?
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Moving to KA21? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across North Ayrshire — free, no-obligation quote.
Postcodes in KA21
Neighbouring districts
All Kilmarnock (KA) postcode districts ›
Frequently asked questions
Where is the KA21 postcode?
What broadband can I get in KA21?
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.