King William County, VA demographics:
population, income, and more

Total population
18,593
2.0% year-over-year change
Median household income
$86,056/yr
1.0% year-over-year change
Housing units
7,730
1.6% year-over-year change

King William County population

How many people live in King William County

King William County is home to 18,593 residents, according to the most recent Census data. Gender-wise, 49% of King William County locals are male, and 51% are female.

Total population
18,593
2.0% year-over-year change
Gender ratio
Male
49%
9,106
Female
51%
9,487
Value Percent YoY change
Male 9,106 49% 1.4%
Female 9,487 51% 2.5%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in King William County is 41, with the population distributed as follows: about 18.7% are children under 15, then 10.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 27.2% of the population, while another 26.3% fall into the 45 to 64 bracket. Finally, around 16.8% are 65 or older.

Median age
40.9
Age breakdown
Under 15
18.7%
15 to 24
10.9%
25 to 44
27.2%
45 to 64
26.3%
Over 65
16.8%
Value Percent YoY change
Under 15 3,478 18.7% -1.2%
15 to 24 2,030 10.9% 3.2%
25 to 44 5,066 27.2% 3.8%
45 to 64 4,890 26.3% 0.8%
Over 65 3,129 16.8% 4.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In King William County, 96.6% of the population are US-born citizens, while 2.9% have gained naturalized citizenship. At the same time, 0.5% of residents are non-citizens. As for race, 77.6% of locals are Caucasian, 15% are African American and 0.6% have Asian roots. There’s also a share of 4.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
96.6%
Non-U.S.-born citizens
2.9%
Non-citizens
0.5%
Value Percent YoY change
U.S.-born citizens 17,958 96.6% 2.0%
Non-U.S.-born citizens 542 2.9% 1.1%
Non-citizens 93 0.5% 6.9%
Racial breakdown
White
77.6%
Black or African American
15%
American Indian and Alaska Native
1.1%
Asian
0.6%
Native Hawaiian and other Pacific Islander
0%
Two or more races
4.8%
Other
0.8%
Value Percent
White 14,420 77.6%
Black or African American 2,795 15%
American Indian and Alaska Native 208 1.1%
Asian 116 0.6%
Native Hawaiian and other Pacific Islander 10 0%
Two or more races 893 4.8%
Other 151 0.8%

Households in King William County

A peek inside King William County households

King William County has 7,352 households, with an average of 3 members in each. Of these, 73.4% are families, while the remaining 26.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
7,352
3.3% year-over-year change
Average people per household
3
Non-family households
1,957
Family households
5,395
Value Percent YoY change
Non-family households 1,957 26.6% 3.2%
Family households 5,395 73.4% 3.4%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in King William County

The housing landscape of King William County

King William County's housing consists of 7,730 units, with 90.7% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 2.7% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3% of the housing landscape.

Housing units
7,730
1.6% year-over-year change
Housing types
Value Percent
1 unit, detached 7,012 90.7%
1 unit, attached 210 2.7%
2 units 36 0.5%
3 or 4 units 73 0.9%
5 to 9 units 17 0.2%
10 to 19 units 22 0.3%
20 to 49 units 93 1.2%
50 or more units 35 0.4%
Mobile home 232 3%
Homes built since 2020
287
328.4% year-over-year change

The age of buildings in King William County

In King William County, the median construction year is 1996. About 9.7% of homes were built before the 1940s, with another 1.5% going up by 1949. Most development happened in the second half of the 20th century. Then, 21.4% of homes were added from 2000 to 2009, 18.1% between 2010 and 2019, and 3.7% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 751 9.7% 4.3%
Built between 1940 and 1949 118 1.5% -23.9%
Built between 1950 and 1959 241 3.1% -27.0%
Built between 1960 and 1969 342 4.4% 7.9%
Built between 1970 and 1979 714 9.2% 6.9%
Built between 1980 and 1989 871 11.3% -2.7%
Built between 1990 and 1999 1,360 17.6% -2.9%
Built between 2000 and 2009 1,650 21.4% -7.4%
Built between 2010 and 2019 1,396 18.1% 9.9%
Built in 2020 or later 287 3.7% 328.4%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

King William County occupancy rates

Out of the 7,352 occupied housing units in King William County, 88.9% are owner-occupied, while 11.1% are lived in by tenants. Meanwhile, 4.9% of all homes on the local market sit vacant.

Occupied housing units
7,352
3.3% year-over-year change
Occupancy breakdown
Renter occupied
818
Owner occupied
6,534
Value Percent YoY
change
Renter occupied 818 11.1% 2.6%
Owner occupied 6,534 88.9% 3.4%
Unoccupied housing units
4.9%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

King William County housing costs

Housing costs in King William County come to a median of $1,314 per month, while tenants specifically pay a median gross rent of $1,166.

Median housing costs per month
$1,314/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in King William County
$1,166/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in King William County

King William County education at a glance

About 43.6% of the population in King William County went to high school, while 24.3% pursued college studies. Another 8.3% earned an associate degree and 15.8% hold a bachelor’s. Meanwhile, 6.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 282 2% 38.9%
High school diploma 6,263 43.6% 3.9%
College diploma 3,487 24.3% -1.1%
Associate degree 1,189 8.3% 11.8%
Bachelor's degree 2,275 15.8% -6.8%
Graduate degree 873 6.1% 11.5%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in King William County

How much people earn in King William County

The average annual household income in King William County was $99,161 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +1.6% change from the previous year. At the same time, the median income stood at $86,056, reflecting a +1% shift over the same period.

Average household income in King William County
$99,161/year
1.6% year-over-year change
Median household income in King William County
$86,056/year
1.0% year-over-year change

King William County income by age

In King William County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $105,216. Those with someone between 45 and 64 in charge, often well established professionally, earn $105,925 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $90,347, while those led by someone over 65, many of whom may be retired, have about $50,852 in earnings. Overall, 94.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $90,347 1.3%
25 - 44 $105,216 2.5%
45 - 64 $105,925 8.4%
Over 65 $50,852 0.5%
Above poverty level
17,185
Below poverty level
1,082
Value Percent YoY
change
Above poverty level 17,185 94.1% 4.0%
Below poverty level 1,082 5.9% -24.4%

Employment in King William County

Workforce and job types in King William County

The job market in King William County is powered by 9,883 working residents, spread across a range of industries and roles. 72.7% of the working population are employed in professional or administrative positions, while 27.3% are in hands-on or service-based jobs. Also, 5.9% run their own businesses, 68.1% are employed by private companies, and 20.8% work in the public sector.

Workforce demographics

Working population
9,883
3.0% year-over-year change
White collar
7,187
Blue collar
2,696
Value Percent YoY change
White collar 7,187 72.7% 0.2%
Blue collar 2,696 27.3% 11.4%
Employer type
Self employees
5.9%
Private companies
68.1%
Governmental workers
20.8%
Not for profit companies
5.2%
Value Percent YoY change
Self employees 584 5.9% -30.0%
Private companies 6,726 68.1% 5.4%
Governmental workers 2,058 20.8% 13.4%
Not for profit companies 515 5.2% -7.9%
Unemployment rate
2.3%
-33.9% year-over-year change

Available workforce

The unemployment rate in King William County stands at 2.3%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in King William County

How people get around in King William County

Commuting methods vary: 87.1% of residents travel by personal vehicle and 0.3% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 8,446 87.1% 3.3%
Taxicab 28 0.3% N/A
Ferryboat 14 0.1% 27.3%
Motorcycle 22 0.2% 15.8%
Walk 26 0.3% 271.4%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in King William County by zipcode?

Zipcode Population Number of households Median income Average income
23009 8,270 3,099 $98,581 $103,956
23181 5,565 2,304 $95,699 $99,535
23069 3,425 1,241 $83,453 $107,157
23086 3,777 1,445 $89,583 $103,646
23106 917 414 $59,028 $97,711

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FAQs about King William County demographics 

What is the total population of King William County?

King William County has a total population of 18,593 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.0% compared to a year ago.

What is the gender ratio in King William County?

The gender ratio in King William County is as follows:
  • 49% males (9,106 residents)
  • 51% females (9,487 residents)

What is the median age in King William County?

The median age in King William County is 40.9.

What is the age distribution of the population in King William County?

The age distribution in King William County is as follows:
  • Under 15: 18.7% (3,478 residents)
  • Ages 15-24: 10.9% (2,030 residents)
  • Ages 25-44: 27.2% (5,066 residents)
  • Ages 45-64: 26.3% (4,890 residents)
  • Over 65: 16.8% (3,129 residents)

What is the racial and ethnic makeup of King William County?

The racial and ethnic makeup of King William County is as follows:
  • White: 77.6% (14,420 residents)
  • Black or African American: 15% (2,795 residents)
  • American Indian and Alaska Native: 1.1% (208 residents)
  • Asian: 0.6% (116 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (10 residents)
  • Two or More Races: 4.8% (893 residents)
  • Other: 0.8% (151 residents)

What percentage of the population in King William County are U.S.-born citizens?

U.S.-born citizens represent 96.6% of the population in King William County.

How many housing units are there in King William County?

There are 7,730 housing units in King William County, reflecting a +1.6% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in King William County and what is the average household size?

King William County has a total of 7,352 households, with an average of 3 people in each.

What is the median household income in King William County?

King William County has a median household income of $86,056, representing a +1.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for King William County?

The employment rate is 97.7% in King William County, with a workforce of 9,883 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 72.7% (7,187 residents)
  • Blue-collar workers: 27.3% (2,696 residents)

Places of employment:
  • Self-employed: 5.9% (584 residents)
  • Private companies: 68.1% (6,726 residents)
  • Governmental workers: 20.8% (2,058 residents)
  • Not-for-profit companies: 5.2% (515 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025