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COUNTY

Knox County

Maine · 41,117 residents (2025 est.) · 365 sq mi
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The short version

Knox County is a county of 41,003 people in Maine. The median age is 49.5, about 11 years above the US median. Few US counties rank higher on income. 79% of homes are owner-occupied. The foreign-born share is 3%. Getting to work takes 20 minutes on average.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 49.5
US median: 38.9
More educated
40% hold a bachelor's degree
US average: 36%
Less affordable
home values up 62%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
41,003
+3%since 2000
from 39,618 in 2000
41,117 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
112 / sq mi
Unchangedsince 2009
from 112 / sq mi in 2009
US average: 281
Median age
49.5
+20%since 2000
from 41.4 in 2000
US average: 38.9
Land area
365 sq mi
Population, 1990 – 2024
36K37K39K40K41K19902000201020202024Knox County
202441K
1990201020202024
Age distribution, 2024
Under 53.8%(1,551)
US avg: 5.6%
5 to 94.9%(2,022)
US avg: 6%
10 to 144.7%(1,907)
US avg: 6.4%
15 to 195.2%(2,141)
US avg: 6.6%
20 to 244.4%(1,787)
US avg: 6.5%
25 to 3410.4%(4,279)
US avg: 13.7%
35 to 4411.2%(4,589)
US avg: 13.2%
45 to 5412.4%(5,067)
US avg: 12.2%
55 to 6415.1%(6,201)
US avg: 12.7%
65 to 7416.5%(6,776)
US avg: 10.2%
75 to 848.7%(3,587)
US avg: 5.1%
85 and over2.7%(1,096)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$74,096
+11%inflation adjusted, since 2000
from $36,774 in 2000
US average: $82,259
1990 – 2024
Per capita income
$44,763
+124%since 2000
from $19,981 in 2000
US average: $44,673
Households earning $100K+
49.1%
+24.9 ptssince 2009
from 24.2% in 2009
US average: 53.3%
Poverty rate
8.2%
−1.9 ptssince 2000
from 10.1% in 2000
US average: 12.5%
Income inequality (Gini)
0.447
+3%since 2010
from 0.436 in 2010
US average: 0.476
Workforce by industry, 2024
Information12.8%
US avg: 10.8%
Retail trade10.1%
US avg: 9.9%
Wholesale trade8.2%
US avg: 6.9%
Agriculture, forestry, fishing6.6%
US avg: 1.6%
Construction6.3%
US avg: 1.2%
Other services5.9%
US avg: 6.7%
Public administration3.5%
US avg: 4.8%
Finance & insurance3.3%
US avg: 5.9%
Professional, scientific, technical2.9%
US avg: 5.1%
Transportation & warehousing1.7%
US avg: 2.2%
Arts, entertainment, food1.2%
US avg: 1.9%
Education & health services0.4%
US avg: 0.9%
Manufacturing0.3%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$324,900
+62%inflation adjusted, since 2000
from $110,200 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,165
+24%inflation adjusted, since 2000
from $517 in 2000
US average: $1,442
Owner-occupied
78.7%
+4.7 ptssince 2000
from 74.0% in 2000
21.3% rent
Vacancy rate
24.8%
−2.6 ptssince 2009
from 27.4% in 2009
US average: 10.0%
Persons per household
2.12 people
−10%since 2009
from 2.36 people in 2009
US average: 2.54
Owner cost-burdened
25.1%
−7.4 ptssince 2009
from 32.5% in 2009
US average: 22.9%
Renter cost-burdened
45.5%
−1.9 ptssince 2009
from 47.3% in 2009
US average: 47.4%
Afford Score
4.4
−4%since 2009
from 4.6 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
69
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic97.9%(38,777)
Black0.2%(78)
Hispanic / Latino0.6%(225)
Asian0.4%(141)
Other0%
2024
White, non-Hispanic93.2%(38,223)
Black0.3%(116)
Hispanic / Latino1.9%(768)
Asian0.5%(202)
Other4.1%(1,694)
Diversity Score
16
+121%since 2009
from 7 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
11
−54%since 2020
from 25 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican0.5%(200)
Puerto Rican0.5%(188)
Argentine0.2%(96)
Cuban0.2%(70)
Salvadoran0.1%(29)
Chilean0%(4)
+ 2 more hispanic origin groups with data
Asian origin
Thai0.1%(48)
Filipino0.1%(43)
Pakistani0.1%(36)
Japanese0.1%(25)
Chinese0%(13)
Taiwanese0%(11)
Korean0%(6)
Pacific Islander origin
Ancestry
English24.8%(10,170)
Irish13.4%(5,499)
German9.2%(3,757)
American7.2%(2,953)
French6.5%(2,661)
Italian5.2%(2,120)
Scottish5.1%(2,073)
French Canadian3.1%(1,271)
Scotch-Irish2.7%(1,127)
Polish2.4%(972)
Finnish2.3%(949)
Swedish2.2%(912)
+ 38 more ancestry groups with data
Dutch1.7%(690)
Norwegian1.3%(516)
British1%(408)
Canadian1%(401)
Portuguese1%(392)
Welsh0.9%(380)
Greek0.8%(334)
Russian0.8%(320)
Hungarian0.5%(200)
Ukrainian0.4%(162)
Danish0.4%(151)
Arab0.3%(119)
Czech0.3%(112)
Lithuanian0.3%(106)
Slovak0.2%(98)
Armenian0.2%(91)
Austrian0.2%(84)
Romanian0.2%(83)
Lebanese0.2%(82)
West Indian0.2%(75)
Swiss0.2%(72)
Haitian0.1%(56)
Israeli0.1%(41)
Australian0.1%(26)
Syrian0%(19)
Iranian0%(15)
Jamaican0%(13)
Iraqi0%(10)
Slovene0%(4)
Latvian0%(3)
Turkish0%(3)
Section 05

Education

Bachelor's degree or higher
39.7%
+13.5 ptssince 2000
from 26.2% in 2000
US average: 35.6%
High school or higher
94.8%
+7.3 ptssince 2000
from 87.5% in 2000
US average: 89.6%
Graduate degree
15.3%
+6.1 ptssince 2000
from 9.2% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
19.6 min
+48%since 2000
from 13.2 min in 2000
US average: 26.5
Drive alone to work
68.8%
−6.7 ptssince 2009
from 75.5% in 2009
US average: 68.9%
Carpooled to work
9.4%
−0.6 ptssince 2009
from 10.0% in 2009
US average: 8.5%
Public transit
0.1%
−0.4 ptssince 2009
from 0.4% in 2009
US average: 3.2%
Worked from home
16.6%
+8.4 ptssince 2009
from 8.1% in 2009
US average: 15.0%
Walked to work
3.5%
+0.1 ptssince 2009
from 3.4% in 2009
US average: 2.4%
Biked to work
0.1%
−0.3 ptssince 2009
from 0.3% in 2009
US average: 0.4%
No vehicle available
5.4%
−0.9 ptssince 2009
from 6.4% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
3.9%
−1.0 ptssince 2011
from 4.9% in 2011
US average: 5.2%
Labor force participation
58.1%
−5.9 ptssince 2011
from 64.0% in 2011
US average: 63.5%
Women 20-64 in the labor force
75.6%
−0.5 ptssince 2020
from 76.1% in 2020
US average: 74.6%
Self-employed
11.1%
−0.6 ptssince 2009
from 11.7% in 2009
US average: 13.1%
Management & professional
38.3%
+9.3 ptssince 2009
from 29.0% in 2009
US average: 42.5%
Section 08

People & community

Male
50.2%
+0.9 ptssince 2009
from 49.3% in 2009
Female
49.8%
−0.9 ptssince 2009
from 50.7% in 2009
Foreign born
3.1%
+1.2 ptssince 2009
from 1.9% in 2009
US average: 14.1%
Veterans
8.7%
−5.2 ptssince 2009
from 13.9% in 2009
US average: 6.2%
With a disability
13.0%
−3.3 ptssince 2012
from 16.3% in 2012
US average: 13.3%
Uninsured
5.5%
−7.5 ptssince 2013
from 13.0% in 2013
US average: 8.4%
Broadband at home
90.3%
+13.0 ptssince 2017
from 77.3% in 2017
US average: 91.0%
Computer in household
94.8%
+3.2 ptssince 2020
from 91.6% in 2020
US average: 95.5%
Same house as last year
90.3%
+1.3 ptssince 2020
from 89.0% in 2020
US average: 87.7%
English only at home
95.8%
−1.0 ptssince 2016
from 96.8% in 2016
US average: 77.7%
Spanish at home
1.4%
+0.5 ptssince 2016
from 0.9% in 2016
US average: 13.6%
Marital status
Men 15+
Never married29.7%(5,250)
Married53.9%(9,538)
Widowed3.4%(596)
Divorced13%(2,304)
Women 15+
Never married22.2%(3,958)
Married52.9%(9,430)
Widowed9.7%(1,728)
Divorced15.2%(2,719)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
5.5%
−7.5 ptssince 2013
from 13.0% in 2013
US average: 8.4%
Employer-based
47.9%
−0.3 ptssince 2020
from 48.2% in 2020
US average: 54.8%
Direct-purchase
22.2%
−0.4 ptssince 2020
from 22.6% in 2020
US average: 13.8%
Medicare
30.2%
+0.9 ptssince 2020
from 29.3% in 2020
US average: 18.4%
Medicaid
18.6%
Unchangedsince 2020
from 18.6% in 2020
US average: 20.9%
VA health care
3.8%
+0.8 ptssince 2020
from 3.0% in 2020
US average: 2.2%
Any private
69.4%
+0.6 ptssince 2020
from 68.8% in 2020
US average: 67.1%
Any public
45.4%
+2.9 ptssince 2020
from 42.5% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)24.3%(718)
US avg: 26.4%
Gulf War (1990s)17%(503)
US avg: 24.3%
Vietnam era35.8%(1,058)
US avg: 33.1%
Korean War3.6%(107)
US avg: 4.5%
World War II1.5%(43)
US avg: 1%

Share of the 2,953 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper

Places similar to Knox County

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Pop 42,905
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Pop 44,591
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Pop 41,607
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Pop 43,748
Places similar to Knox County
Head to head

Compare Knox County to nearby counties

KNOX COUNTY VS
Lincoln County
Income$76,875+4%
Home value$332,700+2%
Population36,595−11%
SEE FULL COMPARISON →
KNOX COUNTY VS
Waldo County
Income$72,782−2%
Home value$257,700−21%
Population40,693−1%
SEE FULL COMPARISON →
KNOX COUNTY VS
Sagadahoc County
Income$87,806+19%
Home value$333,300+3%
Population37,979−8%
SEE FULL COMPARISON →
KNOX COUNTY VS
Kennebec County
Income$69,077−7%
Home value$238,200−27%
Population129,067+214%
SEE FULL COMPARISON →
Frequently asked

How many people live in Knox County, Maine?

Knox County, Maine has about 41,003 residents according to the 2024 American Community Survey.

What is the median household income in Knox County, Maine?

The typical household in Knox County, Maine earns about $74,096 a year. Half of households make more than that, and half make less.

Is Knox County, Maine expensive?

In Knox County, Maine, the median home is worth about $324,900, and the typical rent is about $1,165 a month.

How educated are people in Knox County, Maine?

About 39.7% of adults age 25 and over in Knox County, Maine hold a bachelor's degree or higher.

What is the poverty rate in Knox County, Maine?

About 8.2% of people in Knox County, Maine live below the federal poverty line.

Has Knox County, Maine grown since 1990?

Yes, Knox County, Maine has grown since 1990. The population has added about 4,693 residents, a change of about 13 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →