Knox County, Maine Population 2024

40,775

Knox County, Maine's estimated 2024 population is 40,775 with a growth rate of -0.49% in the past year according to the most recent United States census data. Knox County, Maine is the 11th largest county in Maine. The 2010 population was 39,727 and has seen a growth of 2.64% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202939,765-202-0.51%
202839,967-202-0.5%
202740,169-202-0.5%
202640,371-202-0.5%
202540,573-202-0.5%
202440,775-202-0.49%
202340,977-202-0.49%
202241,1791100.27%
202141,0694151.02%
202040,6548622.17%
201939,792320.08%
201839,760-14-0.04%
201739,77450.01%
201639,769-28-0.07%
201539,797-100-0.25%
201439,8972040.51%
201339,693800.2%
201239,613-61-0.15%
201139,674-53-0.13%
201039,72700%
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%
186032,716-7,049-17.73%
2024 Growth Rate
-0.49% (-202)
County Website
Knox County
State
Maine
County Seat
Rockland
2020 Population
40,654
Area
365 mi²
Density
112 people/mi²
Growth Since 2020
0.3% (121)
Founded
April 1, 1860

Population by Race

Race
Population
Percentage (of total)
White38,67794.66%
Two or more races1,5093.69%
Other race2660.65%
Black or African American1520.37%
Asian1420.35%
Native American1040.25%
Native Hawaiian or Pacific Islander100.02%

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Knox County, Maine Population by Race

Knox County, Maine Population Pyramid 2024

Knox County, Maine Median Age

49.2

Total

47

Male

51.5

Female

Knox County, Maine Adults

There are 33,889 adults, (11,072 of whom are seniors) in Knox County, Maine.

Knox County, Maine Age Dependency

79.1

Age Dependency Ratio

48.5

Old Age Dependency Ratio

30.6

Child Dependency Ratio

Knox County, Maine Sex Ratio

Female20,31349.71%
Male20,54750.29%

Knox County, Maine Population by Age

Knox County, Maine Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All17,9792.1778.521.5
Married8,6072.7991.68.4
Non Family7,5841.2565.434.6
Female1,3303.0967.432.6
Male4583.2582.817.2

2.78

Average Family Size

2.17

Average Household Size

78.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Knox County, Maine Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade1,4464.6%
Associates Degree2,4037.65%
Bachelors Degree7,72124.58%
Graduate Degree4,56214.52%
High School Graduate9,44630.07%
Less Than 9th Grade3461.1%
Some College5,48817.47%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Knox County, Maine Educational Attainment by Sex (over 25)

Knox County, Maine Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White29,69928,01411,721
2+ Races1,0631,008265
Hispanic485474248
Other Race13312228
Asian117117103
Black1127915
Native American82740
Islander10104

The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 88.03%.

Knox County, Maine Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$41,847$52,054$37,733
Graduate Degree$67,486$76,557$59,670
High School Graduate$36,862$41,420$31,979
Less Than 9th Grade$30,446$28,182$33,306
Overall$41,197$47,722$35,698
Some College$39,085$49,144$27,396

$41,197

Average Earnings

$47,722

Average Male

$35,698

Average Female

Knox County, Maine Earnings by Educational Attainment

Knox County, Maine Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Knox County, Maine Language

95.64% of Knox County, Maine residents speak only English, while 4.36% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.22% of the population.

Knox County, Maine Language

Knox County, Maine Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White37,0573,1068.38%
Multiple1,25824119.16%
Hispanic6716810.13%
Other2553814.9%
Black681725%
Asian128118.59%
Islander10660%

8.76%

Overall Poverty Rate

7.05%

Male Poverty Rate

10.38%

Female Poverty Rate

Poverty in Knox County, Maine

The race most likely to be in poverty in Knox County, Maine is Islander, with 60% below the poverty level.

The race least likely to be in poverty in Knox County, Maine is White, with 8.38% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.96%. Among those working part-time, it was 7.58%, and for those that did not work, the poverty rate was 16.99%.

Knox County, Maine Poverty

rate

Rate
Poverty
Less Than 9th Grade33.07%
High School9.74%
Some College9.72%
Bachelors or Greater3.36%

Knox County, Maine Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed12.96%
Male Unemployed6.94%
Female Employed5.67%
Male Employed2.44%

Knox County, Maine Poverty Rate by Employment Status and Sex

Knox County, Maine Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$92,717$119,758
Households$71,903$95,678
Married Families$98,949$-999,999,999
Non Families$43,380$59,322

mean

median

Income by Household Type

Knox County, Maine Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

51.5%

Overall Marriage Rate

52.0%

Male Marriage Rate

50.9%

Female Marriage Rate

Knox County, Maine Married by Age and Sex

male

female

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

Married

Widowed

Divorced

Separated

NeverMarried

Knox County, Maine Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

2,911

Number of Veterans

2,618

Male Veterans

293

Female Veterans

War
Veterans
Vietnam1,156
Second Gulf War590
First Gulf War468
Korea126
World War II55

Knox County, Maine Veterans by War

count

Age Group
Veterans
75+987
65 to 74736
55 to 64528
35 to 54457
18 to 34203

Knox County, Maine Veterans by Age

count

Name
Veterans
% of Total
White2,7918.66%
2+ Races1079.38%
Hispanic428.71%
Asian86.84%
Other Race53.76%

Knox County, Maine Veterans by Race

Knox County, Maine Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.68%

Veteran Poverty Rate

28.6%

Veteran Disability Rate

Knox County, Maine Veterans by Education

LaborForceParticipation

58.1%

Labor Force Participation

55.6%

Employment Rate

3.9%

Unemployment Rate

Knox County, Maine Employment by Age

LaborForceParticipation

Knox County, Maine Employment by Race

LaborForceParticipation

Knox County, Maine Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

55.91%

Born in Knox County, Maine

97.03%

Native Born

2.97%

Foreign Born

1.42%

Non Citizen

1.55%

Naturalized

Place of Birth

97.03% of Knox County, Maine residents were born in the United States, with 55.91% having been born in Maine. 1.42% 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

Sources