Knox County, Maine demographics
Population: 40,519
Median age: 48.7
Median household income: 63,399
Demographics, population, home values, social and economic characteristics of Knox County, Maine.
Population
| 2021 | 40,519 |
| 2020 | 39,809 |
| 2019 | 39,759 |
| 2018 | 39,823 |
| 2017 | 39,700 |
| 2016 | 39,717 |
| 2015 | 39,723 |
| 2014 | 39,653 |
| 2013 | 39,694 |
| 2012 | 39,848 |
| 2011 | 39,972 |
| 2010 | 40,111 |
| 2009 | 40,897 |
Knox County, ME cities
Camden CDP - 3,713
Rockland city - 6,977
Thomaston CDP - 2,075
Census data for Knox County, Maine
Demographic and housing estimates in Knox County, Maine
| Total population | 40,519 |
| Male | 20,404 |
| Female | 20,115 |
| Total population | 40,519 |
| Under 5 years | 1,618 |
| 5 to 9 years | 1,934 |
| 10 to 14 years | 2,202 |
| 15 to 19 years | 2,097 |
| 20 to 24 years | 1,844 |
| 25 to 34 years | 4,171 |
| 35 to 44 years | 4,528 |
| 45 to 54 years | 5,219 |
| 55 to 59 years | 2,615 |
| 60 to 64 years | 4,023 |
| 65 to 74 years | 6,216 |
| 75 to 84 years | 2,957 |
| 85 years and over | 1,095 |
| Median age (years) | 48.7 |
| Under 18 years | 7,196 |
| 16 years and over | 34,451 |
| 18 years and over | 33,323 |
| 21 years and over | 32,413 |
| 62 years and over | 12,557 |
| 65 years and over | 10,268 |
| Total population | 40,519 |
| One race | 39,372 |
| White | 38,626 |
| Black or African American | 178 |
| American Indian and Alaska Native | 123 |
| Asian | 143 |
| Native Hawaiian and Other Pacific Islander | 5 |
| Some other race | 297 |
| Two or more races | 1,147 |
| Citizen, VOTING AGE 18 and over population | 32,909 |
| Male Citizen, VOTING AGE 18 and over population | 16,274 |
| Female Citizen, VOTING AGE 18 and over population | 16,635 |
Social characteristics in Knox County, Maine
| Total households | 17,529 |
| Family households (families) | 8,293 |
| Married-couple family | 1,474 |
| Male householder, no wife present, family | 2,791 |
| Female householder, no husband present, family | 2,170 |
| Nonfamily households | 4,971 |
| Average household size | 7,306 |
| Average family size | 2.22 |
Economic characteristics in Knox County, Maine
| Total households | 17,529 |
| Less than $10,000 | 840 |
| $10,000 to $14,999 | 758 |
| $15,000 to $24,999 | 1,486 |
| $25,000 to $34,999 | 1,452 |
| $35,000 to $49,999 | 2,132 |
| $50,000 to $74,999 | 3,511 |
| $75,000 to $99,999 | 2,603 |
| $100,000 to $149,999 | 2,679 |
| $150,000 to $199,999 | 1,134 |
| $200,000 or more | 934 |
| Median household income (dollars) | 63,399 |
Housing characteristics in Knox County, Maine
| Total housing units | 24,247 |
| Occupied housing units | 17,529 |
| Vacant housing units | 6,718 |
| Total housing units | 24,247 |
| 1-unit, detached | 18,952 |
| 1-unit, attached | 605 |
| 2 units | 1,145 |
| 3 or 4 units | 807 |
| 5 to 9 units | 428 |
| 10 to 19 units | 197 |
| 20 or more units | 497 |
| Mobile home | 1,568 |
| Boat, RV, van, etc. | 48 |
| Total housing units | 24,247 |
| Built 2014 or later | 14 |
| Built 2010 to 2013 | 896 |
| Built 2000 to 2009 | 3,186 |
| Built 1990 to 1999 | 2,837 |
| Built 1980 to 1989 | 3,049 |
| Built 1970 to 1979 | 2,814 |
| Built 1960 to 1969 | 1,331 |
| Built 1950 to 1959 | 1,323 |
| Built 1940 to 1949 | 764 |
| Built 1939 or earlier | 8,033 |
| Total housing units | 24,247 |
| 1 room | 563 |
| 2 rooms | 635 |
| 3 rooms | 1,401 |
| 4 rooms | 3,833 |
| 5 rooms | 4,817 |
| 6 rooms | 4,275 |
| 7 rooms | 3,572 |
| 8 rooms | 2,292 |
| 9 rooms or more | 2,859 |
| Median rooms | 5.7 |
| Total housing units | 24,247 |
| No bedroom | 567 |
| 1 bedroom | 2,226 |
| 2 bedrooms | 7,103 |
| 3 bedrooms | 9,948 |
| 4 bedrooms | 3,406 |
| 5 or more bedrooms | 997 |
| Occupied housing units | 17,529 |
| Owner-occupied | 13,887 |
| Renter-occupied | 3,642 |
| Average household size of owner-occupied unit | 2.30 |
| Average household size of renter-occupied unit | 1.91 |
| Occupied housing units | 17,529 |
| Moved in 2017 or later | 1,313 |
| Moved in 2015 to 2016 | 3,952 |
| Moved in 2010 to 2014 | 2,773 |
| Moved in 2000 to 2009 | 4,489 |
| Moved in 1990 to 1999 | 2,084 |
| Moved in 1989 and earlier | 2,918 |
| Owner-occupied units | 13,887 |
| Less than $50,000 | 632 |
| $50,000 to $99,999 | 508 |
| $100,000 to $149,999 | 1,895 |
| $150,000 to $199,999 | 2,887 |
| $200,000 to $299,999 | 3,481 |
| $300,000 to $499,999 | 2,846 |
| $500,000 to $999,999 | 1,319 |
| $1,000,000 or more | 319 |
| Median (dollars) | 224,400 |
| Owner-occupied units | 13,887 |
| Housing units with a mortgage | 8,007 |
| Housing units without a mortgage | 5,880 |
| Occupied units paying rent | 3,275 |
| Less than $500 | 366 |
| $500 to $999 | 1,572 |
| $1,000 to $1,499 | 934 |
| $1,500 to $1,999 | 338 |
| $2,000 to $2,499 | 31 |
| $2,500 to $2,999 | 25 |
| $3,000 or more | 9 |
| Median (dollars) | 927 |
| No rent paid | 367 |
Demographic data for Knox County, ME and each city in the county. Lists of cities by population, wealth and poverty in Knox County, ME.
Links