Cardiff's 2026 population is now estimated at 391,495. In 2005, the population of Cardiff was 321,001. Cardiff has grown by 3,806 in the last year, which represents a 0.98% annual change. These population values and projections come from UK local authority population estimates (Nomis NM_31_1 official) and World Population Review Internal Projections .
Cardiff is the largest city and capital of Wales. It’s the main commercial and cultural center of the country with an estimated population of 350,000 in 2014, which makes it the 9th largest city in the United Kingdom.
Cardiff has an estimated population of 357,200, as estimated by the Office for National Statistics. The Larger Urban Zone has an estimated population of 890,000, however.
The city proper has a population density of 6,400 people per square mile (2,500 per square kilometer) and covers a total area of 140.3 square kilometers. The Cardiff-Newport metropolitan area has a population of 1.1 million.
More than 18 million people visit Cardiff each year, which makes it the 6th most popular alternative tourist destination according to National Geographic.
Cardiff has a very diverse population with a history of trade connections, post-war immigration and international students who attend university. At the 2011 census, the racial and ethnic composition of Cardiff was:
More than 54,000 people in Cardiff belong to a non-white ethnic group.
Cardiff has a Roman Catholic cathedral, and it has been the seat of a Catholic archbishop since the turn of the 20th century, although the Catholic population has fallen. The Jewish population has also dropped. The oldest non-Christian community in Cardiff is Jewish. Jews were not allowed to live in Wales between 1290 and the 17th century, and the Welsh Jewish community was re-established in the 1700s. There is also a Muslim population of about 4%, which is well above the Welsh average and the UK average of 2.7%. In 2001, 19% of the city’s population said they had no religion at the census, and nearly 9% did not state a faith.
Interestingly, Cardiff has the smallest percentage of people over 65 living in Wales at 13%.
Except for a time of decline during the 1970s and 1980s, Cardiff’s population has continually grown since 1801 when the community was barely over 6,000 residents. Early population increases over the years sometimes exceeded additions of more than 30,000 persons every ten years.
In 2008, it was the fastest-growing local authority in Wales with a growth rate of 1.2%. Between 2001 and 2011, Cardiff grew by 46,000, which was 25% of the country’s growth, and it now represents 30% of the country’s growth. 90% of the increase in the country is due to migration, not natural growth.
The population of Cardiff has grown so rapidly over the last decade that a new “garden city” has been proposed to the west to accommodate the rising population.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| London | 9,188,200 | 0.54% |
| Birmingham | 1,199,447 | 0.67% |
| Leeds | 860,894 | 0.92% |
| Glasgow | 663,221 | 0.99% |
| Manchester | 605,521 | 1.34% |
| Cornwall | 591,594 | 0.71% |
| Sheffield | 588,768 | 0.54% |
| Bradford | 570,186 | 0.58% |
| County Durham | 543,515 | 0.51% |
| Edinburgh | 540,101 | 0.88% |
| Wiltshire | 531,890 | 0.78% |
| Liverpool | 518,060 | 0.89% |
| Bristol | 504,401 | 1.01% |
| Kirklees | 451,654 | 0.42% |
| Cheshire East | 431,445 | 1.2% |
| Croydon | 415,854 | 0.79% |
| Barnet | 411,361 | 0.78% |
| Leicester | 397,462 | 1.17% |
| Ealing | 392,217 | 0.8% |
| Cardiff | 391,495 | 0.98% |
| Newham | 385,122 | 1.41% |
| Cheshire West and Chester | 379,280 | 1.02% |
| Coventry | 378,024 | 1.21% |
| Fife | 376,502 | 0.23% |
| Wakefield | 375,620 | 1.08% |
| East Riding of Yorkshire | 360,762 | 0.68% |
| Sandwell | 360,389 | 0.92% |
| Brent | 356,957 | 0.56% |
| Wigan | 350,509 | 0.81% |
| North Lanarkshire | 345,840 | 0.19% |
| Tower Hamlets | 343,937 | 1.8% |
| Wandsworth | 341,081 | 0.51% |
| South Lanarkshire | 337,675 | 0.54% |
| Hillingdon | 337,556 | 1.26% |
| Bromley | 337,506 | 0.33% |
| Shropshire | 337,480 | 0.75% |
| Dudley | 335,485 | 0.53% |
| Northumberland | 335,376 | 0.6% |
| Nottingham | 335,171 | 0.62% |
| Wirral | 330,714 | 0.28% |
| Newcastle upon Tyne | 328,349 | 1.2% |
| Central Bedfordshire | 326,829 | 1.72% |
| Enfield | 326,676 | -0.12% |
| Redbridge | 325,903 | 0.72% |
| Doncaster | 323,304 | 0.55% |
| Southwark | 317,223 | 0.39% |
| Bolton | 315,960 | 0.94% |
| Lambeth | 315,610 | -0.21% |
| Milton Keynes | 314,541 | 1.41% |
| South Gloucestershire | 314,483 | 1.32% |
| Stockport | 307,537 | 0.59% |
| Salford | 306,062 | 1.97% |
| Greenwich | 305,459 | 0.99% |
| Hounslow | 305,116 | 0.95% |
| Lewisham | 302,580 | 0.22% |
| Walsall | 300,361 | 0.79% |
| Medway | 296,482 | 0.65% |
| Sunderland | 291,624 | 0.52% |
| Sefton | 288,723 | 0.43% |
| Wolverhampton | 287,161 | 1.05% |
| Brighton and Hove | 285,339 | 0.26% |
| Havering | 282,365 | 1.1% |
| Waltham Forest | 280,896 | 0.21% |
| Rotherham | 279,932 | 0.6% |
| Kingston upon Hull | 278,303 | 0.53% |
| Derby | 278,015 | 0.7% |
| Harrow | 274,274 | 0.65% |
| Stoke-on-Trent | 274,194 | 0.69% |
| Plymouth | 274,104 | 0.37% |
| Hackney | 267,843 | 0.2% |
| Aberdeenshire | 265,488 | 0.08% |
| Southampton | 262,823 | 0.65% |
| Haringey | 261,872 | -0.38% |
| Bexley | 259,894 | 0.67% |
| Oldham | 255,956 | 0.87% |
| Barnsley | 254,879 | 0.62% |
| Swansea | 254,040 | 0.54% |
| Swindon | 249,070 | 1.06% |
| Rhondda Cynon Taff | 244,568 | 0.35% |
| Luton | 244,144 | 1.05% |
| Tameside | 243,351 | 0.77% |
| Trafford | 242,961 | 0.4% |
| Rochdale | 240,500 | 1.04% |
| Barking and Dagenham | 239,031 | 1.34% |
| Highland | 238,014 | 0.15% |
| Aberdeen City | 232,929 | 0.25% |
| Peterborough | 229,218 | 1.24% |
| North Somerset | 227,819 | 0.72% |
| Islington | 224,098 | 0.24% |
| Solihull | 223,421 | 0.49% |
| Merton | 219,608 | 0.24% |
| North Tyneside | 217,804 | 0.64% |
| Sutton | 217,602 | 0.71% |
| Warrington | 216,705 | 0.3% |
| Camden | 216,045 | -0.21% |
| Portsmouth | 215,781 | 0.34% |
| Calderdale | 211,806 | 0.21% |
| York | 210,679 | 0.33% |
| Stockton-on-Tees | 209,330 | 0.61% |
| Westminster | 208,711 | -0.31% |
| Colchester | 204,204 | 0.99% |
| Bath and North East Somerset | 204,131 | 1.02% |
| Gateshead | 203,092 | 0.08% |
| Telford and Wrekin | 201,479 | 1.4% |
| Bury | 201,135 | 0.55% |
| Bedford | 200,968 | 1.53% |
| Richmond upon Thames | 197,060 | 0.1% |
| Basingstoke and Deane | 196,925 | 0.98% |
| Basildon | 196,141 | 0.65% |
| Huntingdonshire | 194,116 | 0.91% |
| Maidstone | 193,470 | 1.51% |
| Wokingham | 193,372 | 1.64% |
| Chelmsford | 192,408 | 0.95% |
| Renfrewshire | 192,252 | 0.81% |
| Carmarthenshire | 192,251 | 0.38% |
| Herefordshire | 192,238 | 0.31% |
| Charnwood | 192,008 | 0.96% |
| St. Helens | 191,293 | 0.64% |
| Hammersmith and Fulham | 189,009 | 0.09% |
| West Lothian | 188,591 | 0.58% |
| Southend-on-Sea | 186,629 | 0.37% |
| Reading | 186,096 | 0.87% |
| Thurrock | 184,346 | 0.92% |
| South Cambridgeshire | 176,714 | 1.2% |
| Caerphilly | 176,555 | -0.09% |
| New Forest | 175,741 | -0.11% |
| Cherwell | 175,688 | 1.53% |
| Kingston upon Thames | 173,846 | 0.33% |
| Arun | 172,996 | 0.86% |
| Newport | 172,428 | 1.34% |
| North Lincolnshire | 171,812 | 0.14% |
| Slough | 171,455 | 1.22% |
| Wealden | 169,588 | 0.8% |
| Preston | 168,268 | 1.65% |
| Oxford | 167,837 | 0.54% |
| Braintree | 167,439 | 0.95% |
| West Berkshire | 166,526 | 0.43% |
| Knowsley | 166,167 | 1.1% |
| Mid Sussex | 165,560 | 1.17% |
| Blackburn with Darwen | 165,346 | 0.86% |
| Dacorum | 163,854 | 0.75% |
| Canterbury | 163,454 | 0.42% |
| East Devon | 162,971 | 1.48% |
| Reigate and Banstead | 162,599 | 1.08% |
| Swale | 162,085 | 1.16% |
| Windsor and Maidenhead | 160,991 | 0.64% |
| Falkirk | 160,499 | 0.15% |
| Tendring | 160,360 | 1.14% |
| South Oxfordshire | 160,319 | 1.22% |
| Middlesbrough | 160,100 | 1.25% |
| North East Lincolnshire | 160,083 | 0.05% |
| East Hertfordshire | 160,064 | 1.01% |
| Warwick | 158,150 | 1.05% |
| King's Lynn and West Norfolk | 157,188 | 0.31% |
| Flintshire | 156,355 | 0.16% |
| Perth and Kinross | 155,770 | 0.44% |
| Horsham | 155,246 | 1.22% |
| Vale of White Horse | 155,051 | 1.89% |
| Guildford | 153,623 | 0.74% |
| Cambridge | 153,084 | 1.24% |
| South Norfolk | 152,906 | 1.49% |
| South Tyneside | 152,334 | 0.31% |
| Stratford-on-Avon | 152,038 | 1.96% |
| St Albans | 151,943 | 0.31% |
| Dundee City | 150,455 | 0.19% |
| Breckland | 149,172 | 0.87% |
| Norwich | 149,154 | 0.67% |
| South Kesteven | 149,047 | 0.64% |
| Bridgend | 148,747 | 0.41% |
| East Lindsey | 146,888 | 0.59% |
| Lancaster | 146,586 | 0.54% |
| Eastleigh | 146,409 | 1.21% |
| Dumfries and Galloway | 145,210 | -0.22% |
| Ashford | 144,853 | 1.38% |
| Blackpool | 144,731 | 0.19% |
| Nuneaton and Bedworth | 144,622 | 1.07% |
| Neath Port Talbot | 144,049 | 0.28% |
| Stafford | 143,961 | 0.85% |
| Thanet | 143,372 | 0.24% |
| Elmbridge | 143,189 | 0.44% |
| Exeter | 142,441 | 1.45% |
| Isle of Wight | 142,186 | 0.19% |
| Kensington and Chelsea | 142,053 | -0.86% |
| Wychavon | 141,855 | 1.38% |
| Torbay | 141,279 | 0.41% |
| Gloucester | 141,062 | 0.88% |
| Broadland | 141,055 | 1.04% |
| Teignbridge | 140,869 | 0.83% |
| Ipswich | 140,403 | 0.05% |
| Redcar and Cleveland | 140,100 | 0.31% |
| Tonbridge and Malling | 139,460 | 0.95% |
| Winchester | 139,004 | 1.24% |
| Epping Forest | 138,963 | 0.55% |
| Wrexham | 138,848 | 0.22% |
| North Hertfordshire | 138,463 | 0.46% |
| Test Valley | 138,259 | 1.12% |
| Vale of Glamorgan | 137,945 | 0.81% |
| Waverley | 136,576 | 0.85% |
| Powys | 135,533 | 0.18% |
| Bracknell Forest | 133,565 | 1.05% |
| North Ayrshire | 133,524 | -0.18% |
| Halton | 132,699 | 0.44% |
| East Hampshire | 132,608 | 1.01% |
| East Staffordshire | 132,488 | 1.08% |
| Amber Valley | 132,207 | 0.67% |
| Chichester | 131,388 | 0.95% |
| Ashfield | 131,052 | 0.57% |
| Newark and Sherwood | 130,132 | 0.87% |
| Dartford | 130,124 | 2.02% |
| Rushcliffe | 130,006 | 1.28% |
| Newcastle-under-Lyme | 128,589 | 0.34% |
| Havant | 128,076 | 0.43% |
| Stroud | 127,751 | 0.82% |
| Bassetlaw | 127,409 | 0.98% |
| Pembrokeshire | 126,677 | 0.36% |
| Crawley | 126,608 | 1.04% |
| Rugby | 126,262 | 1.57% |
| North Kesteven | 125,007 | 1.03% |
| Welwyn Hatfield | 124,876 | 0.83% |
| West Lancashire | 123,959 | 0.8% |
| Sevenoaks | 123,891 | 0.46% |
| West Oxfordshire | 123,677 | 1.13% |
| Chorley | 122,794 | 0.81% |
| Cheltenham | 122,657 | 0.38% |
| South Derbyshire | 122,415 | 2.07% |
| Dover | 121,454 | 0.7% |
| East Ayrshire | 121,449 | -0.01% |
| Wyre | 121,157 | 1.01% |
| Gedling | 121,133 | 0.4% |
| Gwynedd | 121,077 | 0.11% |
| Tunbridge Wells | 120,817 | 0.47% |
| Hinckley and Bosworth | 118,556 | 0.8% |
| East Lothian | 117,796 | 1.13% |
| South Ribble | 117,547 | 0.62% |
| Scottish Borders | 117,450 | 0.2% |
| North West Leicestershire | 115,656 | 1.67% |
| Fareham | 115,640 | 0.09% |
| Broxtowe | 115,512 | 0.41% |
| South Staffordshire | 115,499 | 0.47% |
| Worthing | 115,132 | 0.55% |
| Conwy | 114,783 | -0.05% |
| Mansfield | 114,428 | 0.57% |
| Angus | 114,357 | -0.2% |
| Erewash | 114,313 | 0.03% |
| Lichfield | 114,160 | 0.99% |
| Darlington | 113,987 | 0.66% |
| Mid Suffolk | 113,638 | 1.28% |
| Folkestone and Hythe | 113,339 | 0.41% |
| South Ayrshire | 112,260 | 0% |
| Gravesham | 111,642 | 0.44% |
| Hertsmere | 111,544 | 0.6% |
| Blaby | 110,916 | 1.26% |
| East Dunbartonshire | 110,561 | 0.27% |
| Watford | 108,967 | 0.83% |
| Spelthorne | 108,772 | 0.79% |
| Harborough | 108,457 | 1.77% |
| North East Derbyshire | 108,382 | 0.81% |
| Rushmoor | 107,633 | 0.89% |
| Worcester | 107,483 | 0.38% |
| Lincoln | 106,418 | 0.62% |
| Chesterfield | 106,411 | 0.17% |
| Woking | 106,218 | 0.25% |
| Fenland | 106,018 | 0.53% |
| Tewkesbury | 106,001 | 1.97% |
| Cannock Chase | 105,611 | 0.73% |
| Hart | 105,127 | 0.95% |
| Wyre Forest | 104,791 | 0.42% |
| Eastbourne | 104,769 | 0.24% |
| North Norfolk | 103,495 | 0.13% |
| Bromsgrove | 103,127 | 0.71% |
| Lewes | 102,960 | 0.29% |
| Broxbourne | 102,957 | 0.52% |
| North Devon | 102,935 | 0.84% |
| Midlothian | 102,684 | 1.39% |
| Pendle | 101,708 | 0.96% |
| Burnley | 101,604 | 1.19% |
| East Renfrewshire | 101,393 | 0.78% |
| South Holland | 101,291 | 1% |
| Great Yarmouth | 100,865 | 0.17% |
| West Lindsey | 100,839 | 0.82% |
| Harlow | 100,718 | 1.26% |
| Hartlepool | 99,579 | 0.71% |
| Denbighshire | 99,000 | 0.41% |
| Babergh | 98,818 | 0.92% |
| Uttlesford | 97,607 | 1.31% |
| Rother | 97,135 | 0.52% |
| Three Rivers | 96,683 | 0.46% |
| Staffordshire Moorlands | 96,551 | -0.05% |
| Surrey Heath | 95,771 | 0.67% |
| Monmouthshire | 95,624 | 0.36% |
| Moray | 95,057 | 0.03% |
| Stirling | 94,964 | 0.4% |
| Torfaen | 94,863 | 0.39% |
| East Cambridgeshire | 94,331 | 0.76% |
| Runnymede | 94,093 | 1.07% |
| South Hams | 93,911 | 0.95% |
| Cotswold | 93,139 | 0.8% |
| Stevenage | 92,756 | 0.53% |
| High Peak | 92,226 | 0.14% |
| Tandridge | 91,750 | 0.64% |
| Hastings | 91,091 | -0.07% |
| Rochford | 91,091 | 0.71% |
| Forest of Dean | 91,003 | 0.69% |
| Castle Point | 90,969 | 0.21% |
| Mole Valley | 88,989 | 0.16% |
| West Dunbartonshire | 88,941 | -0.1% |
| Redditch | 88,293 | 0.25% |
| Argyll and Bute | 87,654 | -0.02% |
| Fylde | 87,412 | 1.14% |
| Hyndburn | 87,277 | 0.71% |
| Mid Devon | 86,345 | 0.79% |
| Bolsover | 85,204 | 0.85% |
| Malvern Hills | 84,918 | 1.01% |
| Epsom and Ewell | 84,298 | 0.6% |
| Gosport | 82,719 | -0.12% |
| Tamworth | 81,912 | 0.49% |
| Brentwood | 79,924 | 0.38% |
| Inverclyde | 78,559 | -0.2% |
| Rossendale | 73,929 | 0.6% |
| Ceredigion | 72,351 | -0.17% |
| Derbyshire Dales | 71,950 | 0.13% |
| Boston | 71,881 | 0.56% |
| Torridge | 70,770 | 0.66% |
| Maldon | 70,623 | 1.07% |
| Isle of Anglesey | 69,027 | -0.05% |
| North Warwickshire | 68,145 | 0.76% |
| Blaenau Gwent | 67,758 | -0.08% |
| Ribble Valley | 67,592 | 1.36% |
| Adur | 65,132 | 0.19% |
| Oadby and Wigston | 62,983 | 1.04% |
| West Devon | 59,924 | 0.85% |
| Merthyr Tydfil | 58,983 | 0.01% |
| Melton | 54,752 | 0.65% |
| Clackmannanshire | 52,233 | 0.12% |
| Rutland | 42,142 | 0.84% |
| Na h-Eileanan Siar | 25,822 | -0.38% |
| Shetland Islands | 23,150 | -0.09% |
| Orkney Islands | 22,133 | 0.26% |
| City of London | 16,700 | 5.12% |
| Isles of Scilly | 2,395 | 0.59% |