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
Homeownership is the standout figure in King William County: 88.8% of homes are owner-occupied, higher than the national rate. King William County is a county in Virginia with a population of 18,232.
The typical household earns $85,212 a year, above the US median of $78,538. Poverty is relatively low for US counties at 5.9%, below the national 12.4%. A typical home is worth $276,500, with typical rent around $1,246.
24.3% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. A solid 11.9% of workers are based at home, below the national 14.0%, and the average commute runs about 37 minutes each way.
The ownership rate anchors the housing story in King William County, and tends to move with the age structure and home-value figures above.
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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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.