Jefferson County, Missouri Population 2024

232,140

Jefferson County, Missouri's estimated 2024 population is 232,140 with a growth rate of 0.61% in the past year according to the most recent United States census data. Jefferson County, Missouri is the 7th largest county in Missouri. The 2010 population was 219,130 and has seen a growth of 5.94% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029239,1501,4020.59%
2028237,7481,4020.59%
2027236,3461,4020.6%
2026234,9441,4020.6%
2025233,5421,4020.6%
2024232,1401,4020.61%
2023230,7381,4020.61%
2022229,3361,4020.62%
2021227,9341,0070.44%
2020226,9271,5250.68%
2019225,4027460.33%
2018224,6568130.36%
2017223,8434040.18%
2016223,4392540.11%
2015223,1851,1190.5%
2014222,0661,1430.52%
2013220,9231,0380.47%
2012219,8852800.13%
2011219,6054750.22%
2010219,130
1990171,38025,19717.24%
1980146,18340,93538.89%
1970105,24838,87158.56%
196066,37728,37074.64%
195038,0075,98418.69%
194032,0234,46016.18%
193027,5631,0083.8%
192026,555-1,323-4.75%
191027,8782,1668.42%
190025,7123,22814.36%
189022,4843,74820%
188018,7363,35621.82%
187015,3805,03648.69%
186010,3443,41649.31%
18506,9282,63261.27%
18404,2961,70465.74%
18302,59275741.25%
18201,835-237,315-99.23%
showing: 38 rows
2024 Growth Rate
0.61% (1,402)
County Website
Jefferson County
County Seat
2010 Population
219,130
Area
657 mi²
Density
353 people/mi²
Growth Since 2010
5.94% (13,010)
Founded
1818

Jefferson County, Missouri Population 2024

Population by Race

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Race
Population
Percentage (of total)
White207,69091.5%
Two or more races13,1625.8%
Black or African American2,2781%
Asian2,2500.99%
Other race1,3010.57%
Native American2410.11%
Native Hawaiian or Pacific Islander620.03%
showing: 7 rows

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Jefferson County, Missouri Population by Race

Jefferson County, Missouri Population Pyramid 2024

Jefferson County, Missouri Median Age

39.9

Total

39.4

Male

40.9

Female

Jefferson County, Missouri Adults

There are 175,291 adults, (35,641 of whom are seniors) in Jefferson County, Missouri.

Jefferson County, Missouri Age Dependency

62.5

Age Dependency Ratio

25.5

Old Age Dependency Ratio

37

Child Dependency Ratio

Jefferson County, Missouri Sex Ratio

Female113,23549.89%
Male113,74950.11%

Jefferson County, Missouri Population by Age

Jefferson County, Missouri Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All86,4552.680.719.3
Married46,6163.1491.38.7
Non Family25,6021.2771.328.7
Female9,3963.2760.239.8
Male4,8413.1668.831.2
showing: 5 rows

3.06

Average Family Size

2.6

Average Household Size

80.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Jefferson County, Missouri Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Jefferson County, Missouri Educational Attainment by Sex (over 25)

Jefferson County, Missouri Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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

The highest rate of bachelors degrees is among asian people with a rate of 46.67%.

Jefferson County, Missouri Educational Attainment by Race

All

Male

Female

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$48,487

Average Earnings

$58,119

Average Male

$38,899

Average Female

Jefferson County, Missouri Earnings by Educational Attainment

Jefferson County, Missouri Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Jefferson County, Missouri Language

96.62% of Jefferson County, Missouri residents speak only English, while 3.38% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.49% of the population.

Jefferson County, Missouri Language

Jefferson County, Missouri Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White202,29215,6777.75%
Multiple13,0051,83814.13%
Hispanic4,99171814.39%
Black2,20147021.35%
Other1,30116712.84%
Asian2,250693.07%
Native2335824.89%
showing: 7 rows

8.27%

Overall Poverty Rate

7.46%

Male Poverty Rate

9.09%

Female Poverty Rate

Poverty in Jefferson County, Missouri

The race most likely to be in poverty in Jefferson County, Missouri is Native, with 24.89% below the poverty level.

The race least likely to be in poverty in Jefferson County, Missouri is Asian, with 3.07% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.68%. Among those working part-time, it was 10.24%, and for those that did not work, the poverty rate was 15.81%.

Jefferson County, Missouri Poverty

rate

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Rate
Poverty
Less Than 9th Grade19.12%
High School8.57%
Some College7.51%
Bachelors or Greater2.94%
showing: 4 rows

Jefferson County, Missouri Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed35.95%
Male Unemployed16.18%
Female Employed3.92%
Male Employed3.05%
showing: 4 rows

Jefferson County, Missouri Poverty Rate by Employment Status and Sex

Jefferson County, Missouri Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Jefferson County, Missouri Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.7%

Overall Marriage Rate

54.3%

Male Marriage Rate

51.1%

Female Marriage Rate

Jefferson County, Missouri Married by Age and Sex

male

female

Jefferson County, Missouri 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.

Jefferson County, Missouri Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Jefferson County, Missouri Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

14,322

Number of Veterans

13,350

Male Veterans

972

Female Veterans

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Jefferson County, Missouri Veterans by War

count

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Jefferson County, Missouri Veterans by Age

count

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Jefferson County, Missouri Veterans by Race

Jefferson County, Missouri Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.46%

Veteran Poverty Rate

28.06%

Veteran Disability Rate

Jefferson County, Missouri Veterans by Education

LaborForceParticipation

66.2%

Labor Force Participation

63.6%

Employment Rate

3.8%

Unemployment Rate

Jefferson County, Missouri Employment by Age

LaborForceParticipation

Jefferson County, Missouri Employment by Race

LaborForceParticipation

Jefferson County, Missouri 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

80.09%

Born in Jefferson County, Missouri

97.77%

Native Born

2.23%

Foreign Born

0.63%

Non Citizen

1.6%

Naturalized

Place of Birth

97.77% of Jefferson County, Missouri residents were born in the United States, with 80.09% having been born in Missouri. 0.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Jefferson County, Missouri Place of Birth

Sources