Washington County, MO demographics:
population, income, and more

Total population
23,470
-0.1% year-over-year change
Median household income
$56,043/yr
8.0% year-over-year change
Housing units
10,734
-0.0% year-over-year change

Washington County population

How many people live in Washington County

Washington County is home to 23,470 residents, according to the most recent Census data. Gender-wise, 51.9% of Washington County locals are male, and 48.1% are female.

Total population
23,470
-0.1% year-over-year change
Gender ratio
Male
51.9%
12,177
Female
48.1%
11,293
Value Percent YoY change
Male 12,177 51.9% 0.0%
Female 11,293 48.1% -0.1%
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 Washington County is 41, with the population distributed as follows: about 19.3% are children under 15, then 11.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 24.2% of the population, while another 27.2% fall into the 45 to 64 bracket. Finally, around 17.9% are 65 or older.

Median age
40.7
Age breakdown
Under 15
19.3%
15 to 24
11.3%
25 to 44
24.2%
45 to 64
27.2%
Over 65
17.9%
Value Percent YoY change
Under 15 4,537 19.3% 1.1%
15 to 24 2,654 11.3% 1.8%
25 to 44 5,679 24.2% -0.8%
45 to 64 6,392 27.2% -2.6%
Over 65 4,208 17.9% 2.7%
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 Washington County, 99% of the population are US-born citizens, while 0.7% have gained naturalized citizenship. At the same time, 0.3% of residents are non-citizens. As for race, 92.1% of locals are Caucasian, 1.8% are African American and 0.1% have Asian roots. There’s also a share of 5.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
99%
Non-U.S.-born citizens
0.7%
Non-citizens
0.3%
Value Percent YoY change
U.S.-born citizens 23,227 99% -0.2%
Non-U.S.-born citizens 171 0.7% 22.1%
Non-citizens 72 0.3% -6.5%
Racial breakdown
White
92.1%
Black or African American
1.8%
American Indian and Alaska Native
0%
Asian
0.1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.4%
Other
0.6%
Value Percent
White 21,617 92.1%
Black or African American 416 1.8%
American Indian and Alaska Native 6 0%
Asian 31 0.1%
Two or more races 1,265 5.4%
Other 135 0.6%

Households in Washington County

A peek inside Washington County households

Washington County has 8,920 households, with an average of 3 members in each. Of these, 68.7% are families, while the remaining 31.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
8,920
0.6% year-over-year change
Average people per household
3
Non-family households
2,789
Family households
6,131
Value Percent YoY change
Non-family households 2,789 31.3% 6.2%
Family households 6,131 68.7% -1.7%
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 Washington County

The housing landscape of Washington County

Washington County's housing consists of 10,734 units, with 67% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.8% 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 27.5% of the housing landscape.

Housing units
10,734
-0.0% year-over-year change
Housing types
Value Percent
1 unit, detached 7,191 67%
1 unit, attached 90 0.8%
2 units 264 2.5%
3 or 4 units 180 1.7%
5 to 9 units 38 0.4%
10 to 19 units 21 0.2%
Mobile home 2,950 27.5%
Homes built since 2020
277
81.0% year-over-year change

The age of buildings in Washington County

In Washington County, the median construction year is 1985. About 8.2% of homes were built before the 1940s, with another 2.4% going up by 1949. Most development happened in the second half of the 20th century. Then, 14.6% of homes were added from 2000 to 2009, 5.6% between 2010 and 2019, and 2.6% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 879 8.2% -9.7%
Built between 1940 and 1949 262 2.4% -15.2%
Built between 1950 and 1959 1,081 10.1% 11.6%
Built between 1960 and 1969 698 6.5% -18.4%
Built between 1970 and 1979 1,680 15.6% 1.9%
Built between 1980 and 1989 1,503 14% -8.1%
Built between 1990 and 1999 2,180 20.3% 9.2%
Built between 2000 and 2009 1,567 14.6% -0.9%
Built between 2010 and 2019 607 5.6% -1.1%
Built in 2020 or later 277 2.6% 81.0%
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.

Washington County occupancy rates

Out of the 8,920 occupied housing units in Washington County, 78.4% are owner-occupied, while 21.6% are lived in by tenants. Meanwhile, 16.9% of all homes on the local market sit vacant.

Occupied housing units
8,920
0.6% year-over-year change
Occupancy breakdown
Renter occupied
1,926
Owner occupied
6,994
Value Percent YoY
change
Renter occupied 1,926 21.6% -8.2%
Owner occupied 6,994 78.4% 3.4%
Unoccupied housing units
16.9%
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.

Washington County housing costs

Housing costs in Washington County come to a median of $653 per month, while tenants specifically pay a median gross rent of $684.

Median housing costs per month
$653/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 Washington County
$684/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 Washington County

Washington County education at a glance

About 54.6% of the population in Washington County went to high school, while 18.7% pursued college studies. Another 11.6% earned an associate degree and 7.4% hold a bachelor’s. Meanwhile, 3.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 732 4.1% 7.5%
High school diploma 9,788 54.6% -3.8%
College diploma 3,363 18.7% -1.5%
Associate degree 2,083 11.6% 26.9%
Bachelor's degree 1,327 7.4% -6.8%
Graduate degree 651 3.6% -2.7%
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 Washington County

How much people earn in Washington County

The average annual household income in Washington County was $75,592 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +0.4% change from the previous year. At the same time, the median income stood at $56,043, reflecting a +8% shift over the same period.

Average household income in Washington County
$75,592/year
0.3% year-over-year change
Median household income in Washington County
$56,043/year
8.0% year-over-year change

Washington County income by age

In Washington County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $64,223. Those with someone between 45 and 64 in charge, often well established professionally, earn $64,739 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $49,628, while those led by someone over 65, many of whom may be retired, have about $40,359 in earnings. Overall, 83.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $49,628 24.6%
25 - 44 $64,223 19.9%
45 - 64 $64,739 -0.3%
Over 65 $40,359 1.8%
Above poverty level
18,455
Below poverty level
3,764
Value Percent YoY
change
Above poverty level 18,455 83.1% 0.8%
Below poverty level 3,764 16.9% -5.6%

Employment in Washington County

Workforce and job types in Washington County

The job market in Washington County is powered by 9,325 working residents, spread across a range of industries and roles. 62.5% of the working population are employed in professional or administrative positions, while 37.5% are in hands-on or service-based jobs. Also, 8.9% run their own businesses, 68% are employed by private companies, and 14.8% work in the public sector.

Workforce demographics

Working population
9,325
2.1% year-over-year change
White collar
5,824
Blue collar
3,501
Value Percent YoY change
White collar 5,824 62.5% 2.9%
Blue collar 3,501 37.5% 0.8%
Employer type
Self employees
8.9%
Private companies
68%
Governmental workers
14.8%
Not for profit companies
8.4%
Value Percent YoY change
Self employees 826 8.9% -7.2%
Private companies 6,336 68% 3.4%
Governmental workers 1,384 14.8% 0.1%
Not for profit companies 779 8.4% 6.1%
Unemployment rate
3.6%
-1.1% year-over-year change

Available workforce

The unemployment rate in Washington County stands at 3.6%, 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 Washington County

How people get around in Washington County

Commuting methods vary: 92.2% of residents travel by personal vehicle and 0.8% 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 8,473 92.2% -1.4%
Bus or trolleybus 1 0% 0.0%
Motorcycle 8 0.1% 0.0%
Walk 78 0.8% 13.0%
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 Washington County by zipcode?

Zipcode Population Number of households Median income Average income
63622 764 473 $31,750 $46,027
63624 3,447 1,327 $41,984 $55,279
63626 588 221 $82,599 $79,342
63630 4,006 1,537 $52,482 $64,102
63631 544 266 $74,211 $72,084
63648 1,858 734 $51,765 $59,759
63660 2,784 720 $51,410 $67,941
63030 557 145 $91,042 $97,471
63071 1,113 430 $44,853 $53,422
63080 13,124 5,646 $66,541 $89,658

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FAQs about Washington County demographics 

What is the total population of Washington County?

Washington County has a total population of 23,470 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 -0.1% compared to a year ago.

What is the gender ratio in Washington County?

The gender ratio in Washington County is as follows:
  • 51.9% males (12,177 residents)
  • 48.1% females (11,293 residents)

What is the median age in Washington County?

The median age in Washington County is 40.7.

What is the age distribution of the population in Washington County?

The age distribution in Washington County is as follows:
  • Under 15: 19.3% (4,537 residents)
  • Ages 15-24: 11.3% (2,654 residents)
  • Ages 25-44: 24.2% (5,679 residents)
  • Ages 45-64: 27.2% (6,392 residents)
  • Over 65: 17.9% (4,208 residents)

What is the racial and ethnic makeup of Washington County?

The racial and ethnic makeup of Washington County is as follows:
  • White: 92.1% (21,617 residents)
  • Black or African American: 1.8% (416 residents)
  • American Indian and Alaska Native: 0% (6 residents)
  • Asian: 0.1% (31 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 5.4% (1,265 residents)
  • Other: 0.6% (135 residents)

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

U.S.-born citizens represent 99% of the population in Washington County.

How many housing units are there in Washington County?

There are 10,734 housing units in Washington County, reflecting a -0.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Washington County has a total of 8,920 households, with an average of 3 people in each.

What is the median household income in Washington County?

Washington County has a median household income of $56,043, representing a +8.0% shift from the previous year, according to the U.S. Census Bureau.

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

The employment rate is 96.4% in Washington County, with a workforce of 9,325 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 62.5% (5,824 residents)
  • Blue-collar workers: 37.5% (3,501 residents)

Places of employment:
  • Self-employed: 8.9% (826 residents)
  • Private companies: 68% (6,336 residents)
  • Governmental workers: 14.8% (1,384 residents)
  • Not-for-profit companies: 8.4% (779 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