Total population: Census 2021

On 21 March 2021 (census day), the resident population of Jersey was 103,267. 

For more recent annual population estimates, and latest information on migration please see our Population statistics page.

Total census population

Jersey’s population increased by 5,400 in the ten years between the 2011 census and the 2021 census.

Population density

Jersey had a population density of 859 people per km². This varied by parish: 

• St Helier was the most densely populated, with 3,716 residents per km² 

• Trinity had the lowest population density, with 267 residents per km² 

Population density by enumeration district, 2021 (persons per km²)

Source: Statistics Jersey

Population density on open data 

Parish populations

St Helier was Jersey’s most populated parish, accounting for over a third (35%) of Jersey’s population, followed by St Saviour (13%) and St Brelade (11%). The smallest parish in terms of population size was St Mary. 

The greatest percentage changes in population between 2011 and 2021 were seen for Grouville (11%), St Clement (8%) and St Helier (7%). 

Grouville saw the largest change in population over the 10-year period between censuses.

You can find detailed analysis for each of the Island parishes in the parish profile reports.

Find data and past reports

You can find census data tables on the open data website.

Find past reports on our release calendar.

Find census reports from 1821 to 2001 on the Jersey Archive website​.