Knox County, Maine
Located in Maine, Knox County has a population of 41,003 residents and a median age of 49.5 years, making it the #1,186 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 8.2%. The median home value is $324,900, and the median household income is $74,096, which is 1% below the national median.
Demographics
Knox County has a population of 41,003, making it the #1,186 most populous county in the US. The median age is 49.5 years, which is 27.2% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Knox County is $74,096, ranking #904 out of 3,222 counties — 1.4% below the national median. The poverty rate is 8.2% and unemployment stands at 3.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Knox County is $324,900 (+15.3% vs national). Renters pay a median of $1,165/mo and the homeownership rate is 78.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Knox County, 39.7% of adults age 25+ hold a bachelor's degree or higher, which is 17.9% above the national average, ranking #288 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Knox County is 78.9 years. 12.4% of adults report poor or fair health and 10.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.8% of adults in Knox County smoke , 27.9% are obese , and 22.6% report excessive drinking. The drug overdose death rate is 40.9 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 22.6 per 100,000. Motor vehicle deaths occur at a rate of 12.8 per 100,000.
Suicide Rate Trend
Families & Children
13.0% of children in Knox County live in poverty . The teen birth rate is 9.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Knox County is 80.4%. The mean commute time is 21.6 min, which is 21.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Knox County voted Democratic with a margin of 18.6%. The vote was 58.2% Dem / 39.6% Rep. Compared to 2020, the margin shifted 1.3 toward Republicans .
Vote Share Over Time
About Knox County, Maine
Knox County, Maine has a total population of 41,003, making it the 1,186th most populous county in the United States. The median age in Knox County is 49.5 years, which is 27.2% above the national median of 38.9 years.
The median household income in Knox County is $74,096, which ranks #904 of 3,222 counties nationwide. This is 1.4% below the national median of $75,149. The poverty rate is 8.2%, lower than the national rate of 12.6%. The unemployment rate stands at 3.9%.
The median home value in Knox County is $324,900, 15.3% above the national median. Renters in Knox County pay a median gross rent of $1,165 per month. The homeownership rate is 78.7%, compared to the national rate of 64.4%.
In Knox County, 39.7% of residents aged 25 and older hold a bachelor's degree or higher, 17.9% above the national average of 33.7%. Health insurance coverage stands at 94.5% of the population. The average commute time for workers is 21.6 min.
Knox County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 93.2% of the population, followed by Two or More Races (3.8%) and Hispanic or Latino (1.9%).
All data for Knox County, Maine comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.