Jefferson County, Kentucky Population 2021

Jefferson County, Kentucky's estimated population is 764,069 with a growth rate of -0.18% in the past year according to the most recent United States census data. Jefferson County, Kentucky is the null largest county in Kentucky. The 2010 Population was 742,054 and has seen a growth of 2.97% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021764,069-1,344-0.18%
2020765,413-1,344-0.18%
2019766,757-1,344-0.17%
2018768,101-1,727-0.22%
2017769,8282,3640.31%
2016767,4642,5180.33%
2015764,9463,2210.42%
2014761,7252,5420.33%
2013759,1837,5541.01%
2012751,6295,2680.71%
2011746,3614,3070.58%
2010742,05477,11711.60%
1990664,937-20,067-2.93%
1980685,004-10,051-1.45%
1970695,05584,10813.77%
1960610,947126,33226.07%
1950484,61599,22325.75%
1940385,39230,0428.45%
1930355,35068,98124.09%
1920286,36923,4498.92%
1910262,92030,37113.06%
1900232,54943,95123.30%
1890188,59842,58829.17%
1880146,01027,05722.75%
1870118,95329,54933.05%
186089,40429,57349.43%
185059,83123,48564.62%
184036,34612,36751.57%
183023,9793,21115.46%
182020,7687,36955.00%
181013,3994,64553.06%
18008,7543,98983.71%
17904,7650.00%
2021 Growth Rate
-0.18%
County Website
Founded
1780
County Seat
2010 Population
742,054
Growth Since 2010
2.97%
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Jefferson County, Kentucky Population Growth

Population by Race

Race Population Percentage
White549,50671.60%
Black or African American166,79421.73%
Asian22,0402.87%
Two or More Races19,4972.54%
Some Other Race7,7941.02%
American Indian and Alaska Native1,4030.18%
Native Hawaiian and Other Pacific Islander3850.05%
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Jefferson County, Kentucky Population By Race

Jefferson County, Kentucky Population Pyramid 2021

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Jefferson County, Kentucky Median Age

38.3


Total

36.7


Male

40


Female

Jefferson County, Kentucky Adults

There are 596,428 adults, (120,799 of whom are seniors) in Jefferson County, Kentucky.

Jefferson County, Kentucky Age Dependency

61.3

Age Dependency Ratio

25.4

Old Age Dependency Ratio

36

Child Dependency Ratio

Jefferson County, Kentucky Sex Ratio

Mujer

396,468

51.66%

Masculino

370,951

48.34%

Jefferson County, Kentucky Population by Age

Jefferson County, Kentucky Renter vs Owner Occupied by Household Type

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Jefferson County, Kentucky Household Types

Type Owner Renter
Married82.1%17.9%
All61.8%38.2%
Masculino55.6%44.4%
Non Family48.3%51.7%
Mujer43.3%56.7%

61.8%

Rate of Home Ownership

Jefferson County, Kentucky Households and Families

Type Count Average Size Owned
All312,6792.461.8
Married127,4183.1482.1
Non Family126,7421.2548.3
Mujer43,5663.3243.3
Masculino14,9533.2255.6

3.1

Average Family Size

2.4

Average Household Size

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Jefferson County, Kentucky Households by Type

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Education Attained Count Percentage
Less Than 9th Grade15,8552.99%
9th to 12th Grade33,9446.40%
High School Graduate141,61226.70%
Some College118,58522.36%
Associates Degree43,0018.11%
Bachelors Degree105,12519.82%
Graduate Degree72,23613.62%
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Jefferson County, Kentucky Educational Attainment by Sex (over 25)

Jefferson County, Kentucky Educational Attainment by Race

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Race Total High School Bachelors
White382,532353,457142,162
Black103,76090,56719,277
Hispanic22,96318,1295,871
Asian14,34912,2157,833
2+ Races6,7286,2042,373
Other Race3,5712,519711
Native American940833182
Islander27823253

The highest rate of high school graduation is among white people with a rate of 92.40%.

The highest rate of bachelors degrees is among asian people with a rate of 54.59%.

Jefferson County, Kentucky Educational Attainment by Race

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Name Average Masculino Mujer
Overall$39,608$44,789$34,473
Less Than 9th Grade$21,890$27,614$16,741
High School Graduate$30,556$34,757$25,532
Some College$36,129$42,017$31,125
Bachelors Degree$51,303$58,815$45,581
Graduate Degree$64,871$77,766$57,359

$39,608

Average Earnings

$44,789

Average Male

$34,473

Average Female

Jefferson County, Kentucky Earnings by Educational Attainment

Jefferson County, Kentucky Language by Age

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Jefferson County, Kentucky Language

90.40% of Jefferson County, Kentucky residents speak only English, while 9.60% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.19% of the population.

Jefferson County, Kentucky Language

Jefferson County, Kentucky Poverty by Race

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Name Total In Poverty Poverty Rate
White506,39148,1209.50%
Black163,18445,10727.64%
Hispanic40,8767,79819.08%
Multiple18,9603,85020.31%
Asian21,8682,52911.56%
Other7,26498413.55%
Native1,36038128.01%

14.24%

Overall Poverty Rate

12.81%

Male Poverty Rate

15.58%

Female Poverty Rate

Poverty in Jefferson County, Kentucky

The race most likely to be in poverty in Jefferson County, Kentucky is Native, with 28.01% below the poverty level.

The race least likely to be in poverty in Jefferson County, Kentucky is White, with 9.50% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.40%. Among those working part-time, it was 18.10%, and for those that did not work, the poverty rate was 22.59%.

Jefferson County, Kentucky Poverty

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Name Poverty
Less Than 9th Grade29.35%
High School14.13%
Some College11.11%
Bachelors or Greater4.01%

Jefferson County, Kentucky Poverty Rate by Education

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Name Poverty
Female Unemployed41.00%
Male Unemployed30.14%
Female Employed7.85%
Male Employed5.16%

Jefferson County, Kentucky Poverty Rate by Employment Status and Sex

Jefferson County, Kentucky Income by Household Type

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Name Median Mean
Households$56,586$79,373
Families$73,882$97,919
Married Families$93,190$119,555
Non Families$36,708$49,356
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Income by Household Type

Jefferson County, Kentucky Marital Status

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Marriage Rates

43.9%

Overall Marriage Rate

46.0%

Male Marriage Rate

42.0%

Female Marriage Rate

Jefferson County, Kentucky Married by Age and Sex

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Jefferson County, Kentucky 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 35-44.

Jefferson County, Kentucky Marital Status by Race

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Jefferson County, Kentucky Marital Status

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45,715

Number of Veterans

41,854

Male Veterans

3,861

Female Veterans

War Veterans
Vietnam16,260
First Gulf War8,872
Second Gulf War7,040
Korea3,637
World War II1,806

Jefferson County, Kentucky Veterans by War

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Age Group Veterans
65 to 7411,989
35 to 5411,257
75+10,143
55 to 649,389
18 to 342,937

Jefferson County, Kentucky Veterans by Age

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Name Veterans % of Total
White34,3537.74%
Black10,2218.49%
Hispanic8993.33%
2+ Races5105.52%
Asian2841.74%
Native American15914.21%
Other Race1363.02%
Islander5216.72%

Jefferson County, Kentucky Veterans by Race

Jefferson County, Kentucky Veterans by Education

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7.63%

Veteran Poverty Rate

28.62%

Veteran Disability Rate

Jefferson County, Kentucky Veterans by Education

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65.8%

Labor Force Participation

62.2%

Employment Rate

5.4%

Unemployment Rate

Jefferson County, Kentucky Employment by Age

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Jefferson County, Kentucky Employment by Race

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Jefferson County, Kentucky 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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67.61%

Born in Jefferson County, Kentucky

92.20%

Native Born

7.80%

Foreign Born

4.29%

Non Citizen

3.51%

Naturalized

Place of Birth

92.20% of Jefferson County, Kentucky residents were born in the United States, with 67.61% having been born in Kentucky. 4.29% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Jefferson County, Kentucky 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