Local authority · W06000010

Population in Carmarthenshire

Every population series published for Carmarthenshire, each over its full published span. A series that begins part-way along began then: nothing earlier is published for this area, and no gap is filled in.

Net internal migration by local authority

In Carmarthenshire, net internal migration by local authority rose from 606 in Year to mid-2012 to 901 in Year to mid-2025, a change of 295 or 48.7% (ONS).

Net internal migration by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour01k2k201520202025Year to mid-2012: 606 people · published 26 September 2025Year to mid-2013: 381 people · published 26 September 2025Year to mid-2014: 349 people · published 26 September 2025Year to mid-2015: 615 people · published 26 September 2025Year to mid-2016: 1,047 people · published 26 September 2025Year to mid-2017: 622 people · published 26 September 2025Year to mid-2018: 1,383 people · published 26 September 2025Year to mid-2019: 1,474 people · published 26 September 2025Year to mid-2020: 2,258 people · published 26 September 2025Year to mid-2021: 1,967 people · published 26 September 2025Year to mid-2022: 1,616 people · published 26 September 2025Year to mid-2023: 1,615 people · published 26 September 2025Year to mid-2024: 782 people · published 26 September 2025Year to mid-2025: 901 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from Internal migration net by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 901 (Year to mid-2025). The national series and its methodology.

International migration into a local authority

In Carmarthenshire, international migration into a local authority rose from 658 in Year to mid-2012 to 740 in Year to mid-2025, a change of 82 or 12.5% (ONS).

International migration into a local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0250500750201520202025Year to mid-2012: 658 people · published 26 September 2025Year to mid-2013: 673 people · published 26 September 2025Year to mid-2014: 715 people · published 26 September 2025Year to mid-2015: 674 people · published 26 September 2025Year to mid-2016: 645 people · published 26 September 2025Year to mid-2017: 507 people · published 26 September 2025Year to mid-2018: 516 people · published 26 September 2025Year to mid-2019: 496 people · published 26 September 2025Year to mid-2020: 415 people · published 26 September 2025Year to mid-2021: 323 people · published 26 September 2025Year to mid-2022: 677 people · published 26 September 2025Year to mid-2023: 958 people · published 26 September 2025Year to mid-2024: 844 people · published 26 September 2025Year to mid-2025: 740 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from International migration in by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 740 (Year to mid-2025). The national series and its methodology.

International migration out of a local authority

In Carmarthenshire, international migration out of a local authority rose from 530 in Year to mid-2012 to 938 in Year to mid-2025, a change of 408 or 77.0% (ONS).

International migration out of a local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0250500750201520202025Year to mid-2012: 530 people · published 26 September 2025Year to mid-2013: 383 people · published 26 September 2025Year to mid-2014: 423 people · published 26 September 2025Year to mid-2015: 453 people · published 26 September 2025Year to mid-2016: 431 people · published 26 September 2025Year to mid-2017: 475 people · published 26 September 2025Year to mid-2018: 508 people · published 26 September 2025Year to mid-2019: 544 people · published 26 September 2025Year to mid-2020: 474 people · published 26 September 2025Year to mid-2021: 329 people · published 26 September 2025Year to mid-2022: 399 people · published 26 September 2025Year to mid-2023: 357 people · published 26 September 2025Year to mid-2024: 377 people · published 26 September 2025Year to mid-2025: 938 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from International migration out by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 938 (Year to mid-2025). The national series and its methodology.

Net international migration by local authority

In Carmarthenshire, net international migration by local authority fell from 128 in Year to mid-2012 to -198 in Year to mid-2025, a change of 326 or 254.7% (ONS).

Net international migration by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0200400600201520202025Year to mid-2012: 128 people · published 26 September 2025Year to mid-2013: 290 people · published 26 September 2025Year to mid-2014: 292 people · published 26 September 2025Year to mid-2015: 221 people · published 26 September 2025Year to mid-2016: 214 people · published 26 September 2025Year to mid-2017: 32 people · published 26 September 2025Year to mid-2018: 8 people · published 26 September 2025Year to mid-2019: -48 people · published 26 September 2025Year to mid-2020: -59 people · published 26 September 2025Year to mid-2021: -6 people · published 26 September 2025Year to mid-2022: 278 people · published 26 September 2025Year to mid-2023: 601 people · published 26 September 2025Year to mid-2024: 467 people · published 26 September 2025Year to mid-2025: -198 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from International migration net by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: -198 (Year to mid-2025). The national series and its methodology.

Births by local authority

In Carmarthenshire, births by local authority fell from 1,954 in Year to mid-2012 to 1,467 in Year to mid-2025, a change of 487 or 24.9% (ONS).

Births by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour05001k2k201520202025Year to mid-2012: 1,954 people · published 26 September 2025Year to mid-2013: 1,906 people · published 26 September 2025Year to mid-2014: 1,827 people · published 26 September 2025Year to mid-2015: 1,814 people · published 26 September 2025Year to mid-2016: 1,884 people · published 26 September 2025Year to mid-2017: 1,822 people · published 26 September 2025Year to mid-2018: 1,806 people · published 26 September 2025Year to mid-2019: 1,744 people · published 26 September 2025Year to mid-2020: 1,638 people · published 26 September 2025Year to mid-2021: 1,572 people · published 26 September 2025Year to mid-2022: 1,609 people · published 26 September 2025Year to mid-2023: 1,578 people · published 26 September 2025Year to mid-2024: 1,538 people · published 26 September 2025Year to mid-2025: 1,467 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from Births by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 1,467 (Year to mid-2025). The national series and its methodology.

Deaths by local authority

In Carmarthenshire, deaths by local authority rose from 2,103 in Year to mid-2012 to 2,488 in Year to mid-2025, a change of 385 or 18.3% (ONS).

Deaths by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour01k2k201520202025Year to mid-2012: 2,103 people · published 26 September 2025Year to mid-2013: 2,213 people · published 26 September 2025Year to mid-2014: 2,053 people · published 26 September 2025Year to mid-2015: 2,279 people · published 26 September 2025Year to mid-2016: 2,252 people · published 26 September 2025Year to mid-2017: 2,163 people · published 26 September 2025Year to mid-2018: 2,463 people · published 26 September 2025Year to mid-2019: 2,211 people · published 26 September 2025Year to mid-2020: 2,326 people · published 26 September 2025Year to mid-2021: 2,499 people · published 26 September 2025Year to mid-2022: 2,487 people · published 26 September 2025Year to mid-2023: 2,593 people · published 26 September 2025Year to mid-2024: 2,369 people · published 26 September 2025Year to mid-2025: 2,488 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from Deaths by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 2,488 (Year to mid-2025). The national series and its methodology.

Births minus deaths by local authority

In Carmarthenshire, births minus deaths by local authority fell from -149 in Year to mid-2012 to -1,021 in Year to mid-2025, a change of 872 or 585.2% (ONS).

Births minus deaths by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour-1k-5000201520202025Year to mid-2012: -149 people · published 26 September 2025Year to mid-2013: -307 people · published 26 September 2025Year to mid-2014: -226 people · published 26 September 2025Year to mid-2015: -465 people · published 26 September 2025Year to mid-2016: -368 people · published 26 September 2025Year to mid-2017: -341 people · published 26 September 2025Year to mid-2018: -657 people · published 26 September 2025Year to mid-2019: -467 people · published 26 September 2025Year to mid-2020: -688 people · published 26 September 2025Year to mid-2021: -927 people · published 26 September 2025Year to mid-2022: -878 people · published 26 September 2025Year to mid-2023: -1,015 people · published 26 September 2025Year to mid-2024: -831 people · published 26 September 2025Year to mid-2025: -1,021 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from Natural change by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: -1,021 (Year to mid-2025). The national series and its methodology.

Other population change by local authority

In Carmarthenshire, other population change by local authority rose from -340 in Year to mid-2012 to 9 in Year to mid-2025, a change of 349 or 102.6% (ONS).

Other population change by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour-300-200-1000201520202025Year to mid-2012: -340 people · published 26 September 2025Year to mid-2013: -318 people · published 26 September 2025Year to mid-2014: -318 people · published 26 September 2025Year to mid-2015: -316 people · published 26 September 2025Year to mid-2016: -312 people · published 26 September 2025Year to mid-2017: -314 people · published 26 September 2025Year to mid-2018: -274 people · published 26 September 2025Year to mid-2019: -278 people · published 26 September 2025Year to mid-2020: -245 people · published 26 September 2025Year to mid-2021: -253 people · published 26 September 2025Year to mid-2022: 6 people · published 26 September 2025Year to mid-2023: -14 people · published 26 September 2025Year to mid-2024: 1 people · published 26 September 2025Year to mid-2025: 9 people · published 29 July 2026

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Earlier years come from Other population change by local authority, 2012 to 2024, joined where the modern series has no figure; overlapping periods are never double-counted. Latest: 9 (Year to mid-2025). The national series and its methodology.

Population by local authority

In Carmarthenshire, population by local authority rose from 183,961 in Mid-2011 to 190,800 in Mid-2024, a change of 6,839 or 3.7% (ONS).

Population by local authority: Mid-2011 to Mid-2024CoalitionCoalitionConservativeConservativeConservativeConservativeConservative050k100k150k20152020Mid-2011: 183,961 people · published 26 September 2025Mid-2012: 184,206 people · published 26 September 2025Mid-2013: 184,252 people · published 26 September 2025Mid-2014: 184,349 people · published 26 September 2025Mid-2015: 184,404 people · published 26 September 2025Mid-2016: 184,985 people · published 26 September 2025Mid-2017: 184,984 people · published 26 September 2025Mid-2018: 185,444 people · published 26 September 2025Mid-2019: 186,125 people · published 26 September 2025Mid-2020: 187,391 people · published 26 September 2025Mid-2021: 188,172 people · published 26 September 2025Mid-2022: 189,194 people · published 26 September 2025Mid-2023: 190,381 people · published 26 September 2025Mid-2024: 190,800 people · published 26 September 2025

Published valueProvisional or revisedLatestShaded bands: governments (see labels)Hover or use arrow keys to read a value

ONS. Latest: 190,800 (Mid-2024). The national series and its methodology.

More on Carmarthenshire

Population in Carmarthenshire | Civometry