Dinwiddie County, Virginia
Quick answer: Dinwiddie County is a county in Virginia with its seat at Dinwiddie. Its estimated population in 2025 was 28,896, up 3.4% since 2020. It covers about 504 square miles of land.
| Type | county |
|---|---|
| County seat | Dinwiddie |
| Established | 1752 |
| Population, 2025 estimate | 28,896 |
| Population, 2020 estimate | 27,886 |
| Change 2020–2025 | 3.6% |
| Rank by population in Virginia | 64 of 133 |
Overview
Virginia has 95 counties, and Dinwiddie County is one of them.[1] The county seat is Dinwiddie.[2] The county was established in 1752.[2] The name comes from Robert Dinwiddie.[2]
Population of Dinwiddie County
The U.S. Census Bureau estimated the population of Dinwiddie County at 28,896 in July 2025, up 3.4% from the April 2020 base of 27,934.[1] That made it 64th of Virginia's 133 counties and independent cities by population. It ranked 46th for growth since 2020.[1]
From 2020 to 2025 the Census Bureau counted about 1,039 births and 1,791 deaths, so deaths outnumbered births by 752.[1] More people moved in from other parts of the United States than moved away. Net domestic migration was 1,434. Moves from abroad added 261.[1]
Geography
Dinwiddie County covers 503.8 square miles of land and 3.5 square miles of water.[3] By land area it ranks 22nd of 133 in Virginia.[3] It had about 57 people per square mile in 2025, so it is mostly rural. Its geographic center lies near 37.07° N, 77.64° W.[3]
The county borders Amelia County, Brunswick County, Chesterfield County, Greensville County, Nottoway County, the City of Petersburg, Prince George County and Sussex County.[4]
The U.S. Geological Survey place-name database lists 47 named streams, 1 named summit and 19 lakes and reservoirs in the county.[5]
Towns
Dinwiddie County has one incorporated town: McKenney (469), with its estimated 2025 population in brackets.[6] In Virginia, towns remain part of the county around them, unlike independent cities.
Frequently asked questions
What is the county seat of Dinwiddie County?
Dinwiddie.
What is the population of Dinwiddie County?
About 28,896 people in 2025, according to the U.S. Census Bureau.
How big is Dinwiddie County?
About 504 square miles of land, plus 3.5 square miles of water.
References
- [1] U.S. Census Bureau, County Population Totals and Components of Change: 2020-2025 (Vintage 2025) – last checked 11/08/2026
- [2] Wikidata, Dinwiddie County, Virginia (open data, CC0) – last checked 11/08/2026
- [3] U.S. Census Bureau, 2024 Gazetteer Files: Counties – last checked 11/08/2026
- [4] U.S. Census Bureau, County Adjacency File (2024) – last checked 11/08/2026
- [5] U.S. Geological Survey, Geographic Names Information System (GNIS), Domestic Names – last checked 11/08/2026
- [6] U.S. Census Bureau, City and Town Population Totals: 2020-2025 – last checked 11/08/2026
Official website: www.dinwiddieva.us
Boundary on the map: Census TIGERweb. See all counties and cities on the map.