KA3 postcode district: Kilmarnock and around
KA3 is a postcode district in Scotland, with 1,193 postcodes in use in 7 sectors. It has postcodes in Kilmarnock, Stewarton, Kilmaurs and 1 more place. It is split between 2 councils: East Ayrshire (1,180 postcodes) and North Ayrshire (13).
- Postcodes in use
- 1,193
- Sectors
- 7
- Councils
- 2 councils
- Places
- 4 places
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources
Every postcode in KA3, and which are new since 2020
- New since 2020: 36
- In use before 2020: 1,157
- Outline: where 5 or more new postcodes since 2020 lie together
Of the 1,193 postcodes in KA3 that ONS places, 36 are new since 2020 and 1,157 were in use before 2020.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 160 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 55.6457, longitude -4.4969. Open this area on OpenStreetMap
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them
The 5 newest postcodes
Where the new postcodes lie together
- 6 new postcodes since 2020, outlined on the map. KA3 5FL, is the newest of them.
What broadband can you get in KA3?
Ofcom reports on 1,180 of the 1,193 postcodes in KA3. At 907 of them every home and business can get gigabit broadband, and at 11 some cannot get decent broadband (10 Mbit/s).
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it
Postcodes in KA3
Pick a sector, then a postcode. A sector is the district plus the next digit.
Places in KA3
Towns and villages with postcodes in KA3, and how many each has here.
Who covers KA3
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
- East Ayrshire1,180
- North Ayrshire13
Constituencies
- Kilmarnock and Loudoun1,180
- Central Ayrshire12
- North Ayrshire and Arran1
Police force areas
- Scotland1,193
Next to KA3
"Next to" is by number: the districts before and after KA3 in the KA area.
Check a postcode
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