| Council | Region / nation | Population | Area, km² | People / km² | Website |
|---|---|---|---|---|---|
| Antrim and Newtownabbey | Northern Ireland | 148,1002024 | 572.0 | 259 | antrimandnewtownabbey.gov.uk |
| Ards and North Down | Northern Ireland | 165,4152024 | 460.8 | 359 | ardsandnorthdown.gov.uk |
| Armagh City, Banbridge and Craigavon | Northern Ireland | 222,5112024 | 1,336.6 | 166 | armaghbanbridgecraigavon.gov.uk |
| Belfast | Northern Ireland | 341,8772018 | 132.5 | 2,581 | — |
| Causeway Coast and Glens | Northern Ireland | 141,9542024 | 1,980.1 | 72 | causewaycoastandglens.gov.uk |
| Derry City and Strabane | Northern Ireland | 152,3832024 | 1,238.5 | 123 | derrycityandstrabanedistrict.com |
| Fermanagh and Omagh | Northern Ireland | 117,6872024 | 2,856.5 | 41 | fermanaghomagh.com |
| Lisburn and Castlereagh | Northern Ireland | 151,6692024 | 505.4 | 300 | lisburncastlereagh.gov.uk |
| Mid Ulster | Northern Ireland | 152,7182024 | 1,826.7 | 84 | midulstercouncil.org |
| Mid and East Antrim | Northern Ireland | 139,9132024 | 1,046.4 | 134 | midandeastantrim.gov.uk |
| Newry, Mourne and Down | Northern Ireland | 183,1152024 | 1,632.9 | 112 | newrymournedown.org |
11 councils · population: latest estimate in Wikidata, year in small type · source: Wikidata