King William County, Virginia Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 83rd-largest in Virginia
The population of King William County, Virginia is 18,232 as of the 2023 American Community Survey, making it the 83rd-largest county in Virginia. The median household income is $85,212, the median home value is $276,500, and the median age is 40.5.
The population of King William County has grown 20.2% since 2010 (15,999 → 19,232), a +1.32% annualized rate.
18,232
Population
+1.32%
Annual growth
67
People / sq mi
$85,212
Median Income
$276,500
Median Home Value
King William County covers 274 sq mi of land at 66.6 people per square mile.
About King William County, VA
King William County is a county in Virginia with a population of 18,232. It ranks #83 among counties in Virginia by population. The median age is 40.5, older than the national median. The population is 49.2% male and 50.8% female.
The median household income in King William County is $85,212, above the US median of $74,580. 5.9% of residents live below the federal poverty level. Home values sit at a median of $276,500, with monthly rent averaging $1,246. The homeownership rate of 88.8% is higher than the national rate of 64.8%.
Educational attainment in King William County reflects 24.3% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.9% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 37.4 minutes each way.
King William County Population History (2010-2024)
The county of King William County had a population of 15,999 in 2010 and 19,232 in 2024, a 20.2% growth over 14 years. The peak was 19,232 in 2024. Average annual growth rate: 1.33%.
19,232
Population (2024)
15,999
Population (2010)
19,232
Peak (2024)
1.33%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 15,999 |
| 2011 | 16,013 |
| 2012 | 15,977 |
| 2013 | 16,096 |
| 2014 | 16,153 |
| 2015 | 16,287 |
| 2016 | 16,416 |
| 2017 | 16,706 |
| 2018 | 16,962 |
| 2019 | 17,198 |
| 2020 | 17,922 |
| 2021 | 18,249 |
| 2022 | 18,528 |
| 2023 | 19,035 |
| 2024 | 19,232 |
Race & Ethnicity
| White | 78.6% |
| Black or African American | 15.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.7% |
| Two or More Races | 0.1% |
Age & Sex
40.5
Median Age
50.8%
Female
49.2%
Male
16.5%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 16.5%
Income & Poverty
| Median household income | $85,212$-5,762 vs state |
| Mean household income | $97,561 |
| Per-capita income | $38,965 |
| Poverty rate | 5.9%-0.9% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 66.4% |
Top Industries by Employment
The largest employment sector in King William County is professional & business services, accounting for 21.1% of workers.
How residents commute
0.1%
Drive alone
0.1%
Carpool
79.2%
Public transit
11.9%
Work from home
37.4 min
Avg commute
Housing
$276,500$-84,200 vs state
Median home value
$1,246
Median rent
88.8%
Homeownership rate
7,605
Total housing units
93.6%
Occupied
6.4%
Vacant
11.2%
Renter-occupied
Social & access
95.4%
With health insurance
92.9%
With broadband internet
23.9%
Foreign-born
11.7%
Veterans (18+)
12.6%
With a disability
97.9%
Speak language other than English at home
Education
93.6%
High School+
24.3%
Bachelor's+
Largest cities in Virginia
Other counties in Virginia
Part of Virginia
Metro areas in Virginia
County rankings
Frequently Asked Questions
King William County, Virginia has a population of 18,232 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 83rd-largest county in Virginia. Population density is 67 people per square mile.
The population of King William County has grown 20.2% since 2010 (15,999 → 19,232), a +1.32% annualized rate.
The median household income in King William County, Virginia is $85,212, with mean (average) household income of $97,561 and per-capita income of $38,965. 5.9% of residents live below the federal poverty level.
In King William County, the largest racial and ethnic groups are White (78.6%), Black or African American (15.3%), Hispanic or Latino (2.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in King William County, Virginia is 40.5 years. Residents are 50.8% female and 49.2% male.
The median home value in King William County is $276,500 and median monthly rent is $1,246. 88.8% of occupied housing units are owner-occupied. The county has 7,605 total housing units, 6.4% of which are vacant.
The largest employment sector in King William County, Virginia is professional, scientific, and management services, employing 21.1% of workers. The unemployment rate is 2.4%.
Virginia Beach is among the largest cities associated with King William County, Virginia, with a population of 457,066.
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Full rankings of Virginia counties
Statewide data for Virginia
Population, race, income, age, and trends across Virginia
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.