Data / Population / Mid Sussex

Population in Mid Sussex

Population in Mid Sussex was 163,566 in 2025, according to the Office for National Statistics (United Kingdom). That is up 1.5% from 2024.

2025, persons163,566
Change on 2024+1.5%
Series high163,5662025
Series low140,1882011

Population in Mid Sussex, 2011 to 2025

140K145K150K155K160K165K201120142017202020252011: 140,188 persons2012: 141,243 persons2013: 142,951 persons2014: 144,577 persons2015: 145,684 persons2016: 147,001 persons2017: 147,679 persons2018: 148,966 persons2019: 150,027 persons2020: 150,877 persons2021: 152,919 persons2022: 155,021 persons2023: 158,226 persons2024: 161,122 persons2025: 163,566 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
2025163,566
2024161,122
2023158,226
2022155,021
2021152,919
2020150,877
2019150,027
2018148,966
2017147,679
2016147,001
2015145,684
2014144,577
2013142,951
2012141,243
2011140,188

Compared with South East

Place2025
Mid Sussex163,566
South East9,691,844

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.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

What is the latest population in Mid Sussex? Cite the source.
get_value {"indicator":"population","place":"gb-la-e07000228"}
GET https://invokely.ai/api/v1/value?indicator=population&place=gb-la-e07000228

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

What is the population in Mid Sussex?

Population in Mid Sussex was 163,566 in 2025, according to the Office for National Statistics (United Kingdom). That is up 1.5% 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 Mid Sussex?

163,566 in 2025, the highest value since 2011 in this series.

Population elsewhere in South East

Related statistics for Mid Sussex

All statistics for Mid Sussex