Cardiff population statistics

In 2024, there were 1.1M residents in Cardiff postcode area with an average age of 40.4 years. Population density was 755 residents/km². Population grew by 13.0% since 2002 and population average age increased by 2.3 years in the same period.

Key Population Data: Residents, Age and Density in 2024 (latest estimate from ONS)
Population Estimates, 2024	Cardiff postcode area	England + Wales
Total residents	1.1M	1.7% of Eng+Wls
Average age	40.4	40.8
Population density	755	409

Cardiff population density map

shows a number of residents per square kilometer(km²), estimates from 2020.

Cardiff population average age map

Population average age by LSOA (County) in 2018.

Cardiff population growth

Total population per year outlines headcount differences.

Total annual population in Cardiff postcode area and Compound Annual Growth Rate (CAGR) compared to England and Wales
Year	Total population	CAGR	CAGR ENG+WLS
2024	1.1M	0.56%	0.74%
2023	1.1M	0.55%	0.72%
2022	1.0M	0.51%	0.68%
2021	1.0M	0.47%	0.66%
2020	1.0M	0.49%	0.68%
2019	1.0M	0.49%	0.71%
2018	1.0M	0.49%	0.72%
2017	1.0M	0.51%	0.73%
2016	1.0M	0.52%	0.75%
2015	1.0M	0.54%	0.74%
2014	1.0M	0.57%	0.74%
2013	1.0M	0.60%	0.73%
2012	1.0M	0.65%	0.73%
2011	1.0M	0.67%	0.73%
2010	999k	0.68%	0.72%
2009	994k	0.71%	0.70%
2008	987k	0.71%	0.70%
2007	979k	0.68%	0.67%
2006	970k	0.63%	0.63%
2005	964k	0.63%	0.61%
2004	958k	0.63%	0.52%
2003	950k	0.42%	0.50%
2002	946k	-	-

Cardiff population pyramid

shows the distribution of various age groups in a population in 2024. Females are shown on the left, males are shown on the right.

Cardiff population pyramid by year

Cardiff population share by decade of age

Shares of population age groups compared to corresponding shares of population groups in England & Wales, 2024.

Cardiff working age population share

Working age population share compared to working age population share in England & Wales, 2024.

Age Distribution and Comparison to England & Wales
age group	head-count	% share of population	% for Eng & Wales
0-15	189k	17.7%	18.3%
16-64	681k	63.7%	62.8%
65+	199k	18.6%	18.9%

Cardiff average age rank

Comparison of postcode areas average ages, 2024 population estimates.

Cardiff average age rank by year

Average Age in Cardiff postcode area and Comparison to England & Wales
postcode area	Average age in 2024
Cardiff	40.4
England & Wales	40.8

Cardiff population average age

Annual area statistics of Cardiff's population average age compared to country statistics.

Population average age by year
Year	Cardiff postcode area	England and Wales
2024	40.4	40.8
2023	40.3	40.7
2022	40.2	40.7
2021	40.2	40.7
2020	40.1	40.5
2019	40.0	40.4
2018	39.8	40.2
2017	39.7	40.1
2016	39.5	39.9
2015	39.4	39.8
2014	39.3	39.7
2013	39.1	39.6
2012	39.0	39.5
2011	38.9	39.4
2010	38.8	39.3
2009	38.7	39.2
2008	38.6	39.2
2007	38.5	39.1
2006	38.4	39.0
2005	38.3	39.0
2004	38.3	38.9
2003	38.2	38.8
2002	38.1	38.7

Cardiff residential areas map

Purple-colored areas are business or industrial areas. Green-colored areas provide quieter surroundings and better living. Map is based on a UK Census 2011 data. Colors calculated from the ratio of number of residents divided by a number of workday people.