Population in Middlesex County

Population in Middlesex County was 10,841 in 2025, according to the U.S. Census Bureau. That is down 0.9% from 2024. That is the 113th highest of 133 counties in 2025.

2025, persons10,841
Change on 2024-0.9%
Series high10,9532022
Series low10,6092020

Population in Middlesex County, 2020 to 2025

CSVChart (SVG)

10.6K10.7K10.8K10.9K11K2020202120222023202420252020: 10,609 persons2021: 10,780 persons2022: 10,953 persons2023: 10,925 persons2024: 10,941 persons2025: 10,841 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202510,841
202410,941
202310,925
202210,953
202110,780
202010,609

Compared with Virginia and United States

Place2025
Middlesex County10,841
Virginia8,880,107
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (PadrĂ³n). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

What is the population in Middlesex County?

Population in Middlesex County was 10,841 in 2025, according to the U.S. Census Bureau. That is down 0.9% from 2024. That is the 113th highest of 133 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Middlesex County?

10,953 in 2022, the highest value since 2020 in this series.

More statistics for Middlesex County

All statistics for Middlesex County