# Most and least densely populated places in Northern Ireland (2021)

Belfast was the most densely populated of Northern Ireland’s 11 councils in 2021 (population density 2,508 per km²).

Fermanagh and Omagh was the least densely populated (39 per km²). The middle council, Mid and East Antrim, had 131 per km².

Worked out by Open Index from census population counts and the area of each place.

| Rank | Area | Population density |
| --- | --- | --- |
| 1 | [Belfast](https://openindex.co.uk/belfast) | 2,508 per km² |
| 2 | [Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh) | 292 per km² |
| 3 | [Ards and North Down](https://openindex.co.uk/ards-and-north-down) | 289 per km² |
| 4 | [Antrim and Newtownabbey](https://openindex.co.uk/antrim-and-newtownabbey) | 200 per km² |
| 5 | [Armagh City, Banbridge and Craigavon](https://openindex.co.uk/armagh-city-banbridge-and-craigavon) | 152 per km² |
| 6 | [Mid and East Antrim](https://openindex.co.uk/mid-and-east-antrim) | 131 per km² |
| 7 | [Derry City and Strabane](https://openindex.co.uk/derry-city-and-strabane) | 120 per km² |
| 8 | [Newry, Mourne and Down](https://openindex.co.uk/newry-mourne-and-down) | 108 per km² |
| 9 | [Mid Ulster](https://openindex.co.uk/mid-ulster) | 77 per km² |
| 10 | [Causeway Coast and Glens](https://openindex.co.uk/causeway-coast-and-glens) | 71 per km² |
| 11 | [Fermanagh and Omagh](https://openindex.co.uk/fermanagh-and-omagh) | 39 per km² |

Source: Worked out by Open Index from census population counts and the area of each place. Period: 2021. Period: 2021.

## Other rankings of this measure

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

- [The map](https://openindex.co.uk/map/population-density)
- [Source and method](https://openindex.co.uk/sources/population-density)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/rankings/population-density/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/population-density/northern-ireland