US Census Data

Knox County vs Washington County

A side-by-side comparison of Knox County and Washington County: population, income, housing, and more.

Knox County and Washington County are counties in Maine. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Knox County has the higher population (40,860 vs 31,261 in Washington County). Knox County has the higher median household income ($71,903 vs $52,237 in Washington County). Knox County has the higher median home value ($290,800 vs $147,100 in Washington County).

Population, income & housing

Knox CountyWashington County
Population40,86031,261
Median age49.2 yrs48.6 yrs
Median household income$71,903$52,237
Median home value$290,800$147,100
Median gross rent$1,079$768
Housing units24,42821,703
Homeownership rate78.5%78.1%
Bachelor's degree or higher39.1%24.9%
Unemployment rate3.9%6.6%

Trends (ACS 5-year, 2019–2023)

Knox CountyWashington County
Population39,759 → 40,860 (+2.8%)31,491 → 31,261 (-0.7%)
Median household income$57,751 → $71,903 (+24.5%)$41,347 → $52,237 (+26.3%)
Median home value$213,400 → $290,800 (+36.3%)$112,400 → $147,100 (+30.9%)
Median gross rent$856 → $1,079 (+26.1%)$603 → $768 (+27.4%)

Knox County

Population
39,75940,860
Median household income
$57,751$71,903
Median home value
$213,400$290,800
Median gross rent
$856$1,079

Washington County

Population
31,49131,261
Median household income
$41,347$52,237
Median home value
$112,400$147,100
Median gross rent
$603$768

Age & race/ethnicity

Age distribution (share)

Knox CountyWashington County
Under 53.8%4.7%
5 to 1713.3%14.0%
18 to 246.1%7.1%
25 to 3410.4%9.7%
35 to 4411.2%10.6%
45 to 5412.6%11.8%
55 to 6415.5%16.3%
65 to 7416.2%15.6%
75 and over10.9%10.2%

Race & ethnicity (share)

Knox CountyWashington County
White (non-Hispanic)94.1%88.0%
Black or African American0.4%0.7%
American Indian & Alaska Native0.3%4.5%
Asian0.3%0.3%
Native Hawaiian & Pacific Islander0.0%0.1%
Some other race0.1%0.2%
Two or more races3.1%3.8%
Hispanic or Latino1.8%2.3%

Educational attainment (age 25+)

Share of adults 25+

Knox CountyWashington County
No high school diploma5.7%8.8%
High school graduate30.1%34.8%
Some college or associate's25.1%31.5%
Bachelor's degree24.6%16.2%
Graduate or professional degree14.5%8.7%

Commute to work

How workers get to work (share)

Knox CountyWashington County
Drove alone69.4%75.2%
Carpooled9.6%10.4%
Public transit0.0%0.2%
Walked4.7%3.6%
Bicycle0.1%0.1%
Worked from home14.5%10.0%
Other means1.7%0.7%

Housing

Units in structure (share)

Knox CountyWashington County
1-unit, detached79.3%80.9%
1-unit, attached1.9%0.4%
2 to 4 units7.7%4.4%
5 to 19 units2.8%1.8%
20 or more units2.1%1.3%
Mobile home & other6.2%11.1%

Poverty & households

Knox CountyWashington County
Poverty rate8.8%17.8%
Average household size2.172.16
Mean commute (minutes)2022
Median year structure built19731975

Full profiles

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