Jefferson County, Missouri Population 2021

Jefferson County, Missouri's estimated population is 226,423 with a growth rate of 0.30% in the past year according to the most recent United States census data. Jefferson County, Missouri is the 8th largest county inMissouri. The 2010 Population was 219,128 and has seen a growth of 3.33% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021226,4236710.30%
2020225,7526710.30%
2019225,0816710.30%
2018224,4106410.29%
2017223,7693920.18%
2016223,3772610.12%
2015223,1161,1100.50%
2014222,0061,1360.51%
2013220,8701,0170.46%
2012219,8532590.12%
2011219,5944660.21%
2010219,12847,74827.86%
1990171,38025,19717.24%
1980146,18340,93538.89%
1970105,24838,87158.56%
196066,37728,37074.64%
195038,0075,98418.69%
194032,0234,46016.18%
193027,5631,0083.80%
192026,555-1,323-4.75%
191027,8782,1668.42%
190025,7123,22814.36%
189022,4843,74820.00%
188018,7363,35621.82%
187015,3805,03648.69%
186010,3443,41649.31%
18506,9282,63261.27%
18404,2961,70465.74%
18302,59275741.25%
18201,8350.00%
2021 Growth Rate
0.30% (671)
County Website
Founded
1818
County Seat
2010 Population
219,128
Growth Since 2010
3.33% (7,295)
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Jefferson County, Missouri Population Growth

Population by Race

Race Population Percentage
White215,13796.06%
Two or More Races4,0111.79%
Black or African American2,1190.95%
Asian1,8170.81%
American Indian and Alaska Native5860.26%
Some Other Race2510.11%
Native Hawaiian and Other Pacific Islander300.01%
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Jefferson County, Missouri Population by Race

Jefferson County, Missouri Population Pyramid $2021

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Jefferson County, Missouri Median Age

39.2


Total

38.3


Male

40.3


Female

Jefferson County, Missouri Adults

There are 171,539 adults, (32,490 of whom are seniors) in Jefferson County, Missouri.

Jefferson County, Missouri Age Dependency

61.1

Age Dependency Ratio

23.4

Old Age Dependency Ratio

37.7

Child Dependency Ratio

Jefferson County, Missouri Sex Ratio

Female

112,789

50.36%

Male

111,162

49.64%

Jefferson County, Missouri Population by Age

Jefferson County, Missouri Renter vs Owner Occupied by Household Type

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Jefferson County, Missouri Household Types

Type Owner Renter
Female59.9%40.1%
Male62.5%37.5%
Non Family69.5%30.5%
All79.4%20.6%
Married89.8%10.2%

79.4%

Rate of Home Ownership

Jefferson County, Missouri Households and Families

Type Count Average Size Owned
All84,4442.6379.4
Married47,1633.1389.8
Non Family22,8291.2669.5
Female9,5083.1759.9
Male4,9443.0762.5

3.03

Average Family Size

2.63

Average Household Size

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Jefferson County, Missouri Households by Type

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Education Attained Count Percentage
Less Than 9th Grade3,8732.51%
9th to 12th Grade12,9128.36%
High School Graduate48,86331.62%
Some College38,50624.92%
Associates Degree18,82412.18%
Bachelors Degree21,05113.62%
Graduate Degree10,4936.79%
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Jefferson County, Missouri Educational Attainment by Sex (over 25)

Jefferson County, Missouri Educational Attainment by Race

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Race Total High School Bachelors
White147,921132,04430,092
Hispanic2,2411,730248
2+ Races1,5271,319352
Black1,2581,118191
Asian1,2131,081532
Native American49247599
Other Race16611842
Islander191111

The highest rate of high school graduation is among native american people with a rate of 96.54%.

The highest rate of bachelors degrees is among islander people with a rate of 57.89%.

Jefferson County, Missouri Educational Attainment by Race

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Name Average Male Female
Overall$40,764$49,248$32,270
Less Than 9th Grade$28,775$34,161$19,848
High School Graduate$34,080$42,101$25,992
Some College$40,338$50,553$30,842
Bachelors Degree$55,730$67,936$46,448
Graduate Degree$62,013$67,980$57,948

$40,764

Average Earnings

$49,248

Average Male

$32,270

Average Female

Jefferson County, Missouri Earnings by Educational Attainment

Jefferson County, Missouri Language by Age

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Jefferson County, Missouri Language

97.03% of Jefferson County, Missouri residents speak only English, while 2.97% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.20% of the population.

Jefferson County, Missouri Language

Jefferson County, Missouri Poverty by Race

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Name Total In Poverty Poverty Rate
White208,89519,5659.37%
Hispanic4,36162914.42%
Multiple3,98051813.02%
Black1,96947624.17%
Other2519537.85%
Native5798514.68%
Asian1,772251.41%

9.58%

Overall Poverty Rate

8.39%

Male Poverty Rate

10.76%

Female Poverty Rate

Poverty in Jefferson County, Missouri

The race most likely to be in poverty in Jefferson County, Missouri is Other, with 37.85% below the poverty level.

The race least likely to be in poverty in Jefferson County, Missouri is Asian, with 1.41% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.85%. Among those working part-time, it was 13.14%, and for those that did not work, the poverty rate was 15.91%.

Jefferson County, Missouri Poverty

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Name Poverty
Less Than 9th Grade20.42%
High School9.33%
Some College7.13%
Bachelors or Greater2.79%

Jefferson County, Missouri Poverty Rate by Education

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Rate Poverty
Female Unemployed33.05%
Male Unemployed20.30%
Female Employed5.51%
Male Employed3.12%

Jefferson County, Missouri Poverty Rate by Employment Status and Sex

Jefferson County, Missouri Income by Household Type

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Name Median Mean
Households$65,454$78,083
Families$74,953$86,904
Married Families$84,378$97,406
Non Families$35,638$48,130
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Income by Household Type

Jefferson County, Missouri Marital Status

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Marriage Rates

54.6%

Overall Marriage Rate

55.5%

Male Marriage Rate

53.7%

Female Marriage Rate

Jefferson County, Missouri Married by Age and Sex

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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

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Jefferson County, Missouri Marital Status

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15,642

Number of Veterans

14,362

Male Veterans

1,280

Female Veterans

War Veterans
Vietnam6,012
First Gulf War3,068
Second Gulf War2,348
Korea825
World War II360

Jefferson County, Missouri Veterans by War

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Age Group Veterans
65 to 744,439
35 to 543,863
55 to 643,337
75+3,064
18 to 34939

Jefferson County, Missouri Veterans by Age

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Name Veterans % of Total
White15,1149.11%
2+ Races21410.78%
Native American20738.98%
Hispanic1936.87%
Black996.56%
Islander842.11%

Jefferson County, Missouri Veterans by Race

Jefferson County, Missouri Veterans by Education

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5.55%

Veteran Poverty Rate

27.80%

Veteran Disability Rate

Jefferson County, Missouri Veterans by Education

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66.5%

Labor Force Participation

63%

Employment Rate

5.3%

Unemployment Rate

Jefferson County, Missouri Employment by Age

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Jefferson County, Missouri Employment by Race

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Jefferson County, Missouri 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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79.59%

Born in Jefferson County, Missouri

98.07%

Native Born

1.93%

Foreign Born

0.71%

Non Citizen

1.21%

Naturalized

Place of Birth

98.07% of Jefferson County, Missouri residents were born in the United States, with 79.59% having been born in Missouri. 0.71% 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

  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