BT21 postcode area guide — Ards and North Down
House prices, crime, broadband speeds, mobile signal, schools and demographics for the BT21 postcode district in Ards and North Down — every official dataset on one page.
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Where is BT21?
Broadband & internet speeds in BT21
Excellent coverage
Superfast (30Mb+)
98.6%
Ultrafast (300Mb+)
89.7%
Gigabit-capable
89.7%
Below USO (10Mb)
0.5%
Broadband availability in the BT21 postcode district (Ards and North Down) is Excellent — gigabit-capable full fibre is widely available. Across the 221 postcodes Ofcom measures in BT21, superfast broadband (30 Mbit/s or faster) reaches 98.6% of premises and gigabit-capable lines are available to 89.7%.
Around 0.5% of premises in BT21 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 BT21
| Postcode | Superfast | Gigabit |
|---|---|---|
| BT21 0AA | 100% | 90% |
| BT21 0AB | 100% | 100% |
| BT21 0AD | 100% | 85.7% |
| BT21 0AE | 100% | 73.9% |
| BT21 0AF | 100% | 100% |
| BT21 0AG | 100% | 93.9% |
| BT21 0AH | 100% | 94.7% |
| BT21 0AJ | 100% | 91.7% |
| BT21 0AL | 100% | 100% |
| BT21 0AN | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Ards and North Down
Ofcom's coverage model for the wider Ards And North Down district (79,779 premises):
4G indoors — all networks
89.3%
4G outdoors — all networks
99.7%
5G outdoors — all networks
24.8%
Voice indoors — all networks
92.1%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in BT21
Police recorded 30 incidents within about a mile of the centre of BT21 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Anti-social behaviour | 11 | 36.7% |
| Violence & sexual offences | 11 | 36.7% |
| Criminal damage & arson | 3 | 10.0% |
| Other crime | 2 | 6.7% |
| Burglary | 1 | 3.3% |
| Drugs | 1 | 3.3% |
| Other theft | 1 | 3.3% |
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).
Food hygiene ratings in BT21
61 rated food businesses operate in BT21. 38 hold the top rating of 5, 9 are rated 4, and 1 are rated 2 or below.
Among the 5-rated: ABBEYFIELD, BALLYVESTER PRIMARY SCHOOL, Boardwalk Social, Bridewell coffee and provisions, Co-op.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Phone area codes for Ards and North Down
Landlines around BT21 typically use:
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What's it like living in BT21?
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Moving to BT21? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Ards and North Down — free, no-obligation quote.
Postcodes in BT21
Neighbouring districts
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Frequently asked questions
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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.