Local authority · W06000024

Population in Merthyr Tydfil

Every population series published for Merthyr Tydfil, 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 Merthyr Tydfil, net internal migration by local authority rose from -187 in Year to mid-2012 to -121 in Year to mid-2025, a change of 66 or 35.3% (ONS).

Net internal migration by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour-2000200201520202025Year to mid-2012: -187 people · published 26 September 2025Year to mid-2013: -243 people · published 26 September 2025Year to mid-2014: -35 people · published 26 September 2025Year to mid-2015: 4 people · published 26 September 2025Year to mid-2016: 213 people · published 26 September 2025Year to mid-2017: 47 people · published 26 September 2025Year to mid-2018: 94 people · published 26 September 2025Year to mid-2019: -15 people · published 26 September 2025Year to mid-2020: 97 people · published 26 September 2025Year to mid-2021: -76 people · published 26 September 2025Year to mid-2022: 34 people · published 26 September 2025Year to mid-2023: -134 people · published 26 September 2025Year to mid-2024: 111 people · published 26 September 2025Year to mid-2025: -121 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: -121 (Year to mid-2025). The national series and its methodology.

International migration into a local authority

In Merthyr Tydfil, international migration into a local authority rose from 178 in Year to mid-2012 to 246 in Year to mid-2025, a change of 68 or 38.2% (ONS).

International migration into a local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0100200300201520202025Year to mid-2012: 178 people · published 26 September 2025Year to mid-2013: 220 people · published 26 September 2025Year to mid-2014: 189 people · published 26 September 2025Year to mid-2015: 121 people · published 26 September 2025Year to mid-2016: 175 people · published 26 September 2025Year to mid-2017: 191 people · published 26 September 2025Year to mid-2018: 169 people · published 26 September 2025Year to mid-2019: 177 people · published 26 September 2025Year to mid-2020: 149 people · published 26 September 2025Year to mid-2021: 194 people · published 26 September 2025Year to mid-2022: 176 people · published 26 September 2025Year to mid-2023: 304 people · published 26 September 2025Year to mid-2024: 265 people · published 26 September 2025Year to mid-2025: 246 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: 246 (Year to mid-2025). The national series and its methodology.

International migration out of a local authority

In Merthyr Tydfil, international migration out of a local authority rose from 48 in Year to mid-2012 to 318 in Year to mid-2025, a change of 270 or 562.5% (ONS).

International migration out of a local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0100200300201520202025Year to mid-2012: 48 people · published 26 September 2025Year to mid-2013: 52 people · published 26 September 2025Year to mid-2014: 54 people · published 26 September 2025Year to mid-2015: 47 people · published 26 September 2025Year to mid-2016: 60 people · published 26 September 2025Year to mid-2017: 99 people · published 26 September 2025Year to mid-2018: 170 people · published 26 September 2025Year to mid-2019: 143 people · published 26 September 2025Year to mid-2020: 124 people · published 26 September 2025Year to mid-2021: 158 people · published 26 September 2025Year to mid-2022: 110 people · published 26 September 2025Year to mid-2023: 78 people · published 26 September 2025Year to mid-2024: 109 people · published 26 September 2025Year to mid-2025: 318 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: 318 (Year to mid-2025). The national series and its methodology.

Net international migration by local authority

In Merthyr Tydfil, net international migration by local authority fell from 130 in Year to mid-2012 to -72 in Year to mid-2025, a change of 202 or 155.4% (ONS).

Net international migration by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0100200201520202025Year to mid-2012: 130 people · published 26 September 2025Year to mid-2013: 168 people · published 26 September 2025Year to mid-2014: 135 people · published 26 September 2025Year to mid-2015: 74 people · published 26 September 2025Year to mid-2016: 115 people · published 26 September 2025Year to mid-2017: 92 people · published 26 September 2025Year to mid-2018: -1 people · published 26 September 2025Year to mid-2019: 34 people · published 26 September 2025Year to mid-2020: 25 people · published 26 September 2025Year to mid-2021: 36 people · published 26 September 2025Year to mid-2022: 66 people · published 26 September 2025Year to mid-2023: 226 people · published 26 September 2025Year to mid-2024: 156 people · published 26 September 2025Year to mid-2025: -72 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: -72 (Year to mid-2025). The national series and its methodology.

Births by local authority

In Merthyr Tydfil, births by local authority fell from 769 in Year to mid-2012 to 544 in Year to mid-2025, a change of 225 or 29.3% (ONS).

Births by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0200400600201520202025Year to mid-2012: 769 people · published 26 September 2025Year to mid-2013: 733 people · published 26 September 2025Year to mid-2014: 691 people · published 26 September 2025Year to mid-2015: 757 people · published 26 September 2025Year to mid-2016: 735 people · published 26 September 2025Year to mid-2017: 711 people · published 26 September 2025Year to mid-2018: 698 people · published 26 September 2025Year to mid-2019: 664 people · published 26 September 2025Year to mid-2020: 647 people · published 26 September 2025Year to mid-2021: 595 people · published 26 September 2025Year to mid-2022: 606 people · published 26 September 2025Year to mid-2023: 576 people · published 26 September 2025Year to mid-2024: 590 people · published 26 September 2025Year to mid-2025: 544 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: 544 (Year to mid-2025). The national series and its methodology.

Deaths by local authority

In Merthyr Tydfil, deaths by local authority rose from 595 in Year to mid-2012 to 722 in Year to mid-2025, a change of 127 or 21.3% (ONS).

Deaths by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour0200400600201520202025Year to mid-2012: 595 people · published 26 September 2025Year to mid-2013: 614 people · published 26 September 2025Year to mid-2014: 599 people · published 26 September 2025Year to mid-2015: 622 people · published 26 September 2025Year to mid-2016: 622 people · published 26 September 2025Year to mid-2017: 654 people · published 26 September 2025Year to mid-2018: 647 people · published 26 September 2025Year to mid-2019: 644 people · published 26 September 2025Year to mid-2020: 732 people · published 26 September 2025Year to mid-2021: 746 people · published 26 September 2025Year to mid-2022: 696 people · published 26 September 2025Year to mid-2023: 707 people · published 26 September 2025Year to mid-2024: 717 people · published 26 September 2025Year to mid-2025: 722 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: 722 (Year to mid-2025). The national series and its methodology.

Births minus deaths by local authority

In Merthyr Tydfil, births minus deaths by local authority fell from 174 in Year to mid-2012 to -178 in Year to mid-2025, a change of 352 or 202.3% (ONS).

Births minus deaths by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour-1000100201520202025Year to mid-2012: 174 people · published 26 September 2025Year to mid-2013: 119 people · published 26 September 2025Year to mid-2014: 92 people · published 26 September 2025Year to mid-2015: 135 people · published 26 September 2025Year to mid-2016: 113 people · published 26 September 2025Year to mid-2017: 57 people · published 26 September 2025Year to mid-2018: 51 people · published 26 September 2025Year to mid-2019: 20 people · published 26 September 2025Year to mid-2020: -85 people · published 26 September 2025Year to mid-2021: -151 people · published 26 September 2025Year to mid-2022: -90 people · published 26 September 2025Year to mid-2023: -131 people · published 26 September 2025Year to mid-2024: -127 people · published 26 September 2025Year to mid-2025: -178 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: -178 (Year to mid-2025). The national series and its methodology.

Other population change by local authority

In Merthyr Tydfil, other population change by local authority rose from -99 in Year to mid-2012 to 11 in Year to mid-2025, a change of 110 or 111.1% (ONS).

Other population change by local authority: Year to mid-2012 to Year to mid-2025CoalitionCoalitionConservativeConservativeConservativeConservativeConservativeLabour-150-100-500201520202025Year to mid-2012: -99 people · published 26 September 2025Year to mid-2013: -122 people · published 26 September 2025Year to mid-2014: -124 people · published 26 September 2025Year to mid-2015: -150 people · published 26 September 2025Year to mid-2016: -116 people · published 26 September 2025Year to mid-2017: -106 people · published 26 September 2025Year to mid-2018: -132 people · published 26 September 2025Year to mid-2019: -133 people · published 26 September 2025Year to mid-2020: -98 people · published 26 September 2025Year to mid-2021: -134 people · published 26 September 2025Year to mid-2022: 2 people · published 26 September 2025Year to mid-2023: -1 people · published 26 September 2025Year to mid-2024: -9 people · published 26 September 2025Year to mid-2025: 11 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: 11 (Year to mid-2025). The national series and its methodology.

Population by local authority

In Merthyr Tydfil, population by local authority rose from 58,851 in Mid-2011 to 58,972 in Mid-2024, a change of 121 or 0.2% (ONS).

Population by local authority: Mid-2011 to Mid-2024CoalitionCoalitionConservativeConservativeConservativeConservativeConservative020k40k20152020Mid-2011: 58,851 people · published 26 September 2025Mid-2012: 58,869 people · published 26 September 2025Mid-2013: 58,791 people · published 26 September 2025Mid-2014: 58,859 people · published 26 September 2025Mid-2015: 58,922 people · published 26 September 2025Mid-2016: 59,247 people · published 26 September 2025Mid-2017: 59,337 people · published 26 September 2025Mid-2018: 59,349 people · published 26 September 2025Mid-2019: 59,255 people · published 26 September 2025Mid-2020: 59,194 people · published 26 September 2025Mid-2021: 58,869 people · published 26 September 2025Mid-2022: 58,881 people · published 26 September 2025Mid-2023: 58,841 people · published 26 September 2025Mid-2024: 58,972 people · published 26 September 2025

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

ONS. Latest: 58,972 (Mid-2024). The national series and its methodology.

More on Merthyr Tydfil

Population in Merthyr Tydfil | Civometry