Caerphilly's 2026 population is now estimated at 176,555. In 2005, the population of Caerphilly was 172,777. Caerphilly experienced a decrease of -155 residents over the past year, marking an annual decline of -0.09%. These population values and projections come from UK local authority population estimates (Nomis NM_31_1 official) and World Population Review Internal Projections .
| 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% |