The population of South East England is 9,294,023 according to mid-2021 population figures published by the ONS. Based on recent growth rates we estimate the current 2023 population of South East England to be 9,410,000. In the year between mid-2020 and mid-2021, the population in South East England grew by an estimated 76,758 people, and in the ten years prior to mid-2021, the population grew by 569,095. Compare population by area.
South East England's population growth rate between mid-2020 and mid-2021 was 0.8%, which is 0.1% higher than the average population growth rate in South East England for the ten years prior to mid-2021 (0.7%).
South East England covers an area of 19,072 square kilometres (7,364 square miles) and has a population density of 487 people per square kilometre (km2), based on the latest population estimates taken in mid-2021. That figure has increased by 30 people per km2 over the past decade.
Between mid-2019 and mid-2020, net internal migration into South East England was 17,683, and net international migration into South East England was 14,385.
South East England's fertility rate (the total number of children that would be born to the average woman in South East England if she were to live to the end of her child-bearing years) of 1.7, and birth rate (the number of live births per thousand of population per year) of 10.1, led to population increases of 92,936 during the year, and South East England's death rate or mortality rate (the number of deaths per thousand of population per year) of 9.8 resulted in a 89,669 population decrease. In total, a net 3,267 person natural increase.
During the past decade, internal migration has fallen from a net inflow of 24,333 in 2011 to a net 17,683 inflow. International migration has risen from a net inflow of 13,369 in 2011 to an inflow of 14,385 in 2021.
The natural increase in population, due to births and deaths, has fallen from an annual net increase of 32,407 people in 2011 to 3,267 in 2021.
International migration was the largest driver of population change over the past decade, representing circa 41% of the total change in population.
South East England's population, population density, and population growth rate, over the past decade.
Figures reported by the ONS in 2022.
South East England's forecast, population density, and population growth rate, over the next twenty years. Figures reported by the ONS in 2018.
The population of South East England is forecast to be 9,440,908 in 2025 and 9,596,381 in 2030.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2022. Data sources: ONS Local statistics