# Share aged under 15: highest and lowest councils in Northern Ireland (2021)

Mid Ulster had the highest share of residents aged under 15 of Northern Ireland’s 11 councils in 2021, at 21.7%.

Ards and North Down had the lowest, at 17.0%. The middle council, Lisburn and Castlereagh, had 19.0%.

| Rank | Area | Aged under 15 |
| --- | --- | --- |
| 1 | [Mid Ulster](https://openindex.co.uk/mid-ulster) | 21.7% |
| =2 | [Armagh City, Banbridge and Craigavon](https://openindex.co.uk/armagh-city-banbridge-and-craigavon) | 20.8% |
| =2 | [Newry, Mourne and Down](https://openindex.co.uk/newry-mourne-and-down) | 20.8% |
| =4 | [Derry City and Strabane](https://openindex.co.uk/derry-city-and-strabane) | 19.9% |
| =4 | [Fermanagh and Omagh](https://openindex.co.uk/fermanagh-and-omagh) | 19.9% |
| 6 | [Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh) | 19.0% |
| 7 | [Antrim and Newtownabbey](https://openindex.co.uk/antrim-and-newtownabbey) | 18.9% |
| 8 | [Causeway Coast and Glens](https://openindex.co.uk/causeway-coast-and-glens) | 18.3% |
| 9 | [Belfast](https://openindex.co.uk/belfast) | 18.0% |
| 10 | [Mid and East Antrim](https://openindex.co.uk/mid-and-east-antrim) | 17.4% |
| 11 | [Ards and North Down](https://openindex.co.uk/ards-and-north-down) | 17.0% |

Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, ONS Census 2021. Period: 2021. Period: 2021.

## Other rankings of this measure

- [UK](https://openindex.co.uk/rankings/age-under-15/uk)
- [England](https://openindex.co.uk/rankings/age-under-15/england)
- [Scotland](https://openindex.co.uk/rankings/age-under-15/scotland)
- [Wales](https://openindex.co.uk/rankings/age-under-15/wales)
- [North East](https://openindex.co.uk/rankings/age-under-15/north-east)
- [North West](https://openindex.co.uk/rankings/age-under-15/north-west)
- [Yorkshire and The Humber](https://openindex.co.uk/rankings/age-under-15/yorkshire-and-the-humber)
- [East Midlands](https://openindex.co.uk/rankings/age-under-15/east-midlands)
- [West Midlands](https://openindex.co.uk/rankings/age-under-15/west-midlands)
- [East of England](https://openindex.co.uk/rankings/age-under-15/east-of-england)
- [London](https://openindex.co.uk/rankings/age-under-15/london)
- [South East](https://openindex.co.uk/rankings/age-under-15/south-east)
- [South West](https://openindex.co.uk/rankings/age-under-15/south-west)

- [The map](https://openindex.co.uk/map/age-under-15)
- [Source and method](https://openindex.co.uk/sources/age-under-15)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/rankings/age-under-15/northern-ireland.

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 2026.10.11. The HTML page: https://openindex.co.uk/rankings/age-under-15/northern-ireland