Knox County, Maine Population 2021

Knox County, Maine's estimated population is 39,882 with a growth rate of 0.14% in the past year according to the most recent United States census data. Knox County, Maine is the 11th largest county inMaine. The 2010 Population was 39,730 and has seen a growth of 0.38% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
202139,882550.14%
202039,827550.14%
201939,772550.14%
201839,717-42-0.11%
201739,759-2-0.01%
201639,761-25-0.06%
201539,786-105-0.26%
201439,8912000.50%
201339,691800.20%
201239,611-61-0.15%
201139,672-58-0.15%
201039,7303,4209.42%
199036,3103,36910.23%
198032,9413,92813.54%
197029,0134381.53%
196028,5754541.61%
195028,1219303.42%
194027,191-502-1.81%
193027,6931,4485.52%
192026,245-2,736-9.44%
191028,981-1,425-4.69%
190030,406-1,067-3.39%
189031,473-1,390-4.23%
188032,8632,0406.62%
187030,823-1,893-5.79%
186032,7160.00%
2021 Growth Rate
0.14%
County Website
State
Founded
April 1, 1860
County Seat
2010 Population
39,730
Growth Since 2010
0.38%
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Knox County, Maine Population Growth

Population by Race

Race Population Percentage
White38,20096.08%
Two or More Races8422.12%
Black or African American2050.52%
Asian2010.51%
American Indian and Alaska Native2010.51%
Some Other Race1080.27%
Native Hawaiian and Other Pacific Islander20.01%
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Knox County, Maine Population by Race

Knox County, Maine Population Pyramid $2021

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Knox County, Maine Median Age

48.4


Total

45.9


Male

50.6


Female

Knox County, Maine Adults

There are 32,578 adults, (9,647 of whom are seniors) in Knox County, Maine.

Knox County, Maine Age Dependency

73.4

Age Dependency Ratio

42.1

Old Age Dependency Ratio

31.3

Child Dependency Ratio

Knox County, Maine Sex Ratio

Female

19,944

50.16%

Male

19,815

49.84%

Knox County, Maine Population by Age

Knox County, Maine Renter vs Owner Occupied by Household Type

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Knox County, Maine Household Types

Type Owner Renter
Female64%36%
Non Family64.9%35.1%
Male66.1%33.9%
All77.2%22.8%
Married90.2%9.8%

77.2%

Rate of Home Ownership

Knox County, Maine Households and Families

Type Count Average Size Owned
All17,0202.2477.2
Married8,3592.890.2
Non Family6,4271.1964.9
Female1,6503.1364
Male5843.3866.1

2.79

Average Family Size

2.24

Average Household Size

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Knox County, Maine Households by Type

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Education Attained Count Percentage
Less Than 9th Grade4851.62%
9th to 12th Grade1,4454.81%
High School Graduate9,88332.93%
Some College5,78119.26%
Associates Degree2,3547.84%
Bachelors Degree6,34821.15%
Graduate Degree3,71812.39%
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Knox County, Maine Educational Attainment by Sex (over 25)

Knox County, Maine Educational Attainment by Race

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Race Total High School Bachelors
White28,82827,0289,665
2+ Races531470103
Hispanic330309123
Black18914657
Asian111111111
Native American1058720
Other Race3636
Islander22

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 100.00%.

Knox County, Maine Educational Attainment by Race

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Name Average Male Female
Overall$32,925$40,124$28,499
Less Than 9th Grade$26,214$40,068$17,872
High School Graduate$29,032$34,698$23,816
Some College$30,575$40,753$25,720
Bachelors Degree$38,710$44,736$34,747
Graduate Degree$53,740$57,299$49,894

$32,925

Average Earnings

$40,124

Average Male

$28,499

Average Female

Knox County, Maine Earnings by Educational Attainment

Knox County, Maine Language by Age

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Knox County, Maine Language

96.76% of Knox County, Maine residents speak only English, while 3.24% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.64% of the population.

Knox County, Maine Language

Knox County, Maine Poverty by Race

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Name Total In Poverty Poverty Rate
White36,6053,5919.81%
Multiple65014221.85%
Hispanic515285.44%
Islander22100.00%

9.86%

Overall Poverty Rate

8.21%

Male Poverty Rate

11.41%

Female Poverty Rate

Poverty in Knox County, Maine

The race most likely to be in poverty in Knox County, Maine is Islander, with 100.00% below the poverty level.

The race least likely to be in poverty in Knox County, Maine is Hispanic, with 5.44% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.47%. Among those working part-time, it was 11.38%, and for those that did not work, the poverty rate was 15.46%.

Knox County, Maine Poverty

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Name Poverty
Less Than 9th Grade18.67%
Some College10.29%
High School9.88%
Bachelors or Greater3.79%

Knox County, Maine Poverty Rate by Education

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Rate Poverty
Male Unemployed28.99%
Female Unemployed21.43%
Female Employed5.44%
Male Employed4.08%

Knox County, Maine Poverty Rate by Employment Status and Sex

Knox County, Maine Income by Household Type

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Name Median Mean
Households$57,751$75,377
Families$71,412$89,210
Married Families$80,008$100,602
Non Families$35,621$49,090
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Income by Household Type

Knox County, Maine Marital Status

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Marriage Rates

51.7%

Overall Marriage Rate

52.0%

Male Marriage Rate

51.4%

Female Marriage Rate

Knox County, Maine Married by Age and Sex

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Knox County, Maine Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Knox County, Maine Marital Status by Race

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Knox County, Maine Marital Status

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2,937

Number of Veterans

2,780

Male Veterans

157

Female Veterans

War Veterans
Vietnam1,449
First Gulf War350
Korea338
Second Gulf War182
World War II102

Knox County, Maine Veterans by War

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Age Group Veterans
65 to 74990
75+989
55 to 64461
35 to 54447
18 to 3450

Knox County, Maine Veterans by Age

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Name Veterans % of Total
White2,8098.93%
2+ Races8514.71%
Black3517.77%
Hispanic225.66%
Other Race410.53%
Native American43.64%

Knox County, Maine Veterans by Race

Knox County, Maine Veterans by Education

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6.92%

Veteran Poverty Rate

32.20%

Veteran Disability Rate

Knox County, Maine Veterans by Education

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61.7%

Labor Force Participation

59.7%

Employment Rate

3.1%

Unemployment Rate

Knox County, Maine Employment by Age

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Knox County, Maine Employment by Race

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Knox County, Maine Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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58.88%

Born in Knox County, Maine

97.70%

Native Born

2.30%

Foreign Born

1.12%

Non Citizen

1.18%

Naturalized

Place of Birth

97.70% of Knox County, Maine residents were born in the United States, with 58.88% having been born in Maine. 1.12% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Knox County, Maine Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources