# KA3

Postcode district covering Kilmarnock, Stewarton and Onthank, in East Ayrshire.

KA3 is a postcode district covering Kilmarnock, Stewarton and Onthank, in East Ayrshire. About 40,032 people.

Postcode district. Code KA3. In: [Postcodes](https://openindex.co.uk/postcode) › [KA](https://openindex.co.uk/postcode/ka)

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an KA3 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Population: 39,429** (2021). KA3 had 39,429 usual residents at the census (Scotland's Census 2022). 481st most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/ka3#f-population
- **People in radon Affected Area squares: 7%** (2022). About 7% of people in KA3 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/ka3#f-radon-affected-share
- **Gigabit broadband coverage: 90.0%** (January 2026). In KA3, 90.0% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/ka3#f-gigabit-coverage
- **Claimant rate: 3.5%** (August 2026). In KA3, 3.5% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026 (ONS via Nomis). UK 3.9%. Source: Claimant count (Nomis), August 2026. Published 15 September 2026. https://openindex.co.uk/postcode/ka3#f-claimant-rate

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=KA3) (Worked out by Open Index · 2022): About 7% of people in KA3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Average house price by council](https://openindex.co.uk/map/house-prices?place=KA3) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of East Ayrshire, where most of this postcode district lies. The outline is KA3.
- [Crimes by council](https://openindex.co.uk/map/scotland-crime-count?place=KA3) (Recorded crimes and offences in Scotland · 2025/26): Published for whole councils, so the map colours all of East Ayrshire, where most of this postcode district lies. The outline is KA3.
- [Population by postcode district](https://openindex.co.uk/map/population?place=KA3) (Census 2021, England and Wales): KA3 had 39,429 usual residents at the census.

## How KA3 compares

Each postcode district against every other postcode district the measure covers.

| Measure | KA3 | Rank | Compared with |
| --- | --- | --- | --- |
| Population | 39,429 | most populated | 30 postcode districts, KA · 2021 |
| People in radon Affected Area squares | 7% | 14th fewest people in radon Affected Areas | 30 postcode districts, KA · 2022 |
| Gigabit broadband coverage | 90.0% | 11th highest | 30 postcode districts, KA · Jan 2026 |
| Claimant rate | 3.5% | 15th highest | 29 postcode districts, KA · Aug 2026 |

## What is the population of KA3?

KA3 had 39,429 usual residents at the census.
KA3 is the 481st most populated of 2,756 in the UK.

## Neighbourhoods in KA3

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Altonhill North and Onthank - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015681) | 658 | – | – | 100.0% |
| [Altonhill North and Onthank - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015682) | 897 | – | – | 97.8% |
| [Altonhill North and Onthank - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015683) | 918 | – | – | 99.1% |
| [Altonhill North and Onthank - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015684) | 744 | – | – | 100.0% |
| [Altonhill North and Onthank - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015685) | 656 | – | – | 98.1% |
| [Altonhill North and Onthank - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015686) | 638 | – | – | 100.0% |
| [Altonhill South, Longpark and Hillhead - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015687) | 770 | – | – | 100.0% |
| [Altonhill South, Longpark and Hillhead - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015688) | 561 | – | – | 100.0% |
| [Altonhill South, Longpark and Hillhead - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015689) | 454 | – | – | 99.3% |
| [Altonhill South, Longpark and Hillhead - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015690) | 649 | – | – | 100.0% |
| [Altonhill South, Longpark and Hillhead - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015691) | 803 | – | – | 81.9% |
| [Altonhill South, Longpark and Hillhead - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015692) | 939 | – | – | 94.4% |
| [Altonhill South, Longpark and Hillhead - 07](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015693) | 530 | – | – | 63.9% |
| [Crosshouse, Gatehead and Kilmaurs Rural - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015713) | 634 | – | – | 100.0% |
| [Dean and New Farm Loch North - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015668) | 550 | – | – | 98.1% |
| [Dean and New Farm Loch North - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015669) | 839 | – | – | 91.8% |
| [Dean and New Farm Loch North - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015670) | 666 | – | – | 100.0% |
| [Dean and New Farm Loch North - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015671) | 860 | – | – | 97.6% |
| [Dean and New Farm Loch North - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015672) | 717 | – | – | 100.0% |
| [Earlston and Hurlford Rural - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015642) | 632 | – | – | 99.7% |
| [Kilmaurs - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015715) | 972 | – | – | 95.5% |
| [Kilmaurs - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015716) | 744 | – | – | 98.0% |
| [Kilmaurs - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015717) | 836 | – | – | 99.5% |
| [New Farm Loch South - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015664) | 459 | – | – | 100.0% |
| [New Farm Loch South - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015665) | 834 | – | – | 79.1% |
| [New Farm Loch South - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015666) | 700 | – | – | 98.6% |
| [New Farm Loch South - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015667) | 868 | – | – | 86.0% |
| [Northern and Irvine Valley Rural  - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015607) | 786 | – | – | 83.0% |
| [Northern and Irvine Valley Rural  - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015608) | 961 | – | – | 10.5% |
| [Northern and Irvine Valley Rural  - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015609) | 738 | – | – | 87.7% |
| [Northern and Irvine Valley Rural  - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015610) | 625 | – | – | 100.0% |
| [Northern and Irvine Valley Rural  - 07](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015611) | 681 | – | – | 86.8% |
| [Northern and Irvine Valley Rural  - 08](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015612) | 482 | – | – | 83.9% |
| [Northern and Irvine Valley Rural  - 09](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015613) | 1,113 | – | – | 84.8% |
| [Piersland - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015661) | 908 | – | – | 94.5% |
| [Piersland - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015662) | 611 | – | – | 100.0% |
| [Southcraig and Beansburn - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015673) | 1,086 | – | – | 99.8% |
| [Southcraig and Beansburn - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015674) | 586 | – | – | 78.0% |
| [Southcraig and Beansburn - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015675) | 719 | – | – | 99.7% |
| [Southcraig and Beansburn - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015676) | 878 | – | – | 100.0% |
| [Southcraig and Beansburn - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015677) | 807 | – | – | 100.0% |
| [Southcraig and Beansburn - 06](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015678) | 581 | – | – | 100.0% |
| [Southcraig and Beansburn - 07](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015679) | 555 | – | – | 99.6% |
| [Southcraig and Beansburn - 08](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015680) | 508 | – | – | 98.4% |
| [Stewarton East - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015614) | 988 | – | – | 95.2% |
| [Stewarton East - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015615) | 795 | – | – | 99.7% |
| [Stewarton East - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015616) | 627 | – | – | 87.2% |
| [Stewarton East - 04](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015617) | 689 | – | – | 76.5% |
| [Stewarton East - 05](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015618) | 952 | – | – | 92.6% |
| [Stewarton West - 01](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015619) | 949 | – | – | 98.1% |
| [Stewarton West - 02](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015620) | 719 | – | – | 86.8% |
| [Stewarton West - 03](https://openindex.co.uk/east-ayrshire/neighbourhood/s01015621) | 820 | – | – | 99.7% |

## Your MP

- [Kilmarnock and Loudoun](https://openindex.co.uk/constituency/kilmarnock-and-loudoun): Lillian Jones (Labour), MP since July 2024. 99% of the people here.
- [Central Ayrshire](https://openindex.co.uk/constituency/central-ayrshire): Alan Gemmell (Labour), MP since July 2024. 1.0% of the people here.
- [North Ayrshire and Arran](https://openindex.co.uk/constituency/north-ayrshire-and-arran): Irene Campbell (Labour), MP since July 2024. 0.1% of the people here.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Middle areas in KA3

[Altonhill North and Onthank](https://openindex.co.uk/east-ayrshire/altonhill-north-and-onthank), [Altonhill South, Longpark and Hillhead](https://openindex.co.uk/east-ayrshire/altonhill-south-longpark-and-hillhead), [Dean and New Farm Loch North](https://openindex.co.uk/east-ayrshire/dean-and-new-farm-loch-north), [Kilmaurs](https://openindex.co.uk/east-ayrshire/kilmaurs), [New Farm Loch South](https://openindex.co.uk/east-ayrshire/new-farm-loch-south), [Northern and Irvine Valley Rural](https://openindex.co.uk/east-ayrshire/northern-and-irvine-valley-rural), [Southcraig and Beansburn](https://openindex.co.uk/east-ayrshire/southcraig-and-beansburn), [Stewarton East](https://openindex.co.uk/east-ayrshire/stewarton-east), [Stewarton West](https://openindex.co.uk/east-ayrshire/stewarton-west)

## Postcode sectors in KA3

[KA3 1 (200 postcodes)](https://openindex.co.uk/postcode/ka3-1), [KA3 2 (247 postcodes)](https://openindex.co.uk/postcode/ka3-2), [KA3 3 (107 postcodes)](https://openindex.co.uk/postcode/ka3-3), [KA3 4 (73 postcodes)](https://openindex.co.uk/postcode/ka3-4), [KA3 5 (164 postcodes)](https://openindex.co.uk/postcode/ka3-5), [KA3 6 (174 postcodes)](https://openindex.co.uk/postcode/ka3-6), [KA3 7 (228 postcodes)](https://openindex.co.uk/postcode/ka3-7)

## Council

[East Ayrshire](https://openindex.co.uk/east-ayrshire)

## Towns in KA3

[Kilmarnock](https://openindex.co.uk/town/kilmarnock), [Stewarton](https://openindex.co.uk/town/stewarton)

## Postcode districts next to KA3

[G76](https://openindex.co.uk/postcode/g76), [G77](https://openindex.co.uk/postcode/g77), [G78](https://openindex.co.uk/postcode/g78), [KA1](https://openindex.co.uk/postcode/ka1), [KA2](https://openindex.co.uk/postcode/ka2), [KA4](https://openindex.co.uk/postcode/ka4), [KA11](https://openindex.co.uk/postcode/ka11), [KA13](https://openindex.co.uk/postcode/ka13), [KA15](https://openindex.co.uk/postcode/ka15), [KA16](https://openindex.co.uk/postcode/ka16), [KA17](https://openindex.co.uk/postcode/ka17)

## Nearest rail stations

[Stewarton (1.6 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-4.5181,55.6822), [Dunlop (4.7 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-4.5324,55.7119), [Kilmaurs (4.7 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-4.5305,55.6372)

## More in the KA postcode area

[All KA postcode districts](https://openindex.co.uk/postcode/ka), [Every UK postcode area](https://openindex.co.uk/postcode)

## KA3 in brief

KA3 is a postcode district covering Kilmarnock, Stewarton and Onthank, in East Ayrshire.
About 40,032 people lived in KA3 in mid-2024 (worked out by Open Index from NRS small-area estimates).
KA3 had 39,429 usual residents at the census.
About 7% of people in KA3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In KA3, 90.0% of homes and businesses could get gigabit-capable broadband in January 2026.
In KA3, 3.5% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.

## About

- Type: Postcode district
- Code: KA3
- Postcode area: [KA](https://openindex.co.uk/postcode/ka)
- Constituency: [Kilmarnock and Loudoun †](https://openindex.co.uk/constituency/kilmarnock-and-loudoun)
- Council: [East Ayrshire †](https://openindex.co.uk/east-ayrshire)
- Area: 202 km²
- People, mid-2024: 40,032*
- Neighbourhoods: 52
- Output areas: 329

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[KA1](https://openindex.co.uk/postcode/ka1), [KA4](https://openindex.co.uk/postcode/ka4), [G78](https://openindex.co.uk/postcode/g78), [KA13](https://openindex.co.uk/postcode/ka13), [G77](https://openindex.co.uk/postcode/g77), [KA15](https://openindex.co.uk/postcode/ka15)

## Latest updates for KA3

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Schools updated: Ofsted · Oct 2026.
- GP practices updated: NHS England · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/KA3

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/ka3, or to one figure with its anchor, https://openindex.co.uk/postcode/ka3#f-population.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/ka3