The population of Northumberland is 321,558 according to mid-2021 population figures published by the ONS. Based on recent growth rates we estimate the current 2023 population of Northumberland to be 322,000. In the year between mid-2020 and mid-2021, the population in Northumberland fell by an estimated 2,262 people, and in the ten years prior to mid-2021, the population grew by 5,069. Compare population by area.
Northumberland's population growth rate between mid-2020 and mid-2021 was -0.7%, which is 0.9% lower than the average population growth rate in Northumberland for the ten years prior to mid-2021 (0.2%).
Northumberland covers an area of 5,014 square kilometres (1,936 square miles) and has a population density of 64 people per square kilometre (km2), based on the latest population estimates taken in mid-2021. That figure has increased by 1 people per km2 over the past decade.
Between mid-2019 and mid-2020, net internal migration into Northumberland was 2,843, and net international migration into Northumberland was 233.
Northumberland's fertility rate (the total number of children that would be born to the average woman in Northumberland if she were to live to the end of her child-bearing years) of 1.59, and birth rate (the number of live births per thousand of population per year) of 7.5, led to population increases of 2,430 during the year, and Northumberland's death rate or mortality rate (the number of deaths per thousand of population per year) of 12.2 resulted in a 3,926 population decrease. In total, a net 1,496 person natural decrease.
During the past decade, internal migration has risen from a net inflow of 266 in 2011 to a net 2,843 inflow. International migration has risen from a net outflow of 20 in 2011 to an inflow of 233 in 2021.
The natural increase in population, due to births and deaths, has fallen from an annual net increase of -169 people in 2011 to -1,496 in 2021.
Internal migration was the largest driver of population change over the past decade, representing circa 181% of the total change in population (over 100% as other factors were net outflows).
Rental Market of Northumberland
Northumberland's population, population density, and population growth rate, over the past decade.
Figures reported by the ONS in 2022.
Northumberland's forecast, population density, and population growth rate, over the next twenty years. Figures reported by the ONS in 2018.
The population of Northumberland is forecast to be 328,425 in 2025 and 332,580 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