Data / Population / Sefton

Population in Sefton

Population in Sefton was 287,583 in 2025, according to the Office for National Statistics (United Kingdom). That is up 0.8% from 2024.

2025, persons287,583
Change on 2024+0.8%
Series high287,5832025
Series low273,8142013

Population in Sefton, 2011 to 2025

270K275K280K285K290K201120142017202020252011: 273,969 persons2012: 273,979 persons2013: 273,814 persons2014: 275,143 persons2015: 275,546 persons2016: 276,707 persons2017: 276,962 persons2018: 277,890 persons2019: 278,908 persons2020: 278,621 persons2021: 279,693 persons2022: 280,956 persons2023: 283,078 persons2024: 285,298 persons2025: 287,583 persons
persons. Source: Office for National Statistics, Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved 2026-10-11, published 2026-07-29.
All 15 values
Periodpersons
2025287,583
2024285,298
2023283,078
2022280,956
2021279,693
2020278,621
2019278,908
2018277,890
2017276,962
2016276,707
2015275,546
2014275,143
2013273,814
2012273,979
2011273,969

Compared with North West

Place2025
Sefton287,583
North West7,772,854

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

Office for National Statistics. Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Contains public sector information licensed under the Open Government Licence v3.0. https://www.nomisweb.co.uk/api/v01/dataset/NM_2002_1.data.json?geography=TYPE480,TYPE424&gender=0&c_age=200&measures=20100&time=2011,latest. Retrieved 2026-10-11.

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Questions

What is the population in Sefton?

Population in Sefton was 287,583 in 2025, according to the Office for National Statistics (United Kingdom). That is up 0.8% from 2024.

Where does this figure come from?

Office for National Statistics (United Kingdom). Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved by Invokely on 2026-10-11.

What was the highest population in Sefton?

287,583 in 2025, the highest value since 2011 in this series.

Population elsewhere in North West

Related statistics for Sefton

All statistics for Sefton