St. Clair County, Missouri Population 2021

St. Clair County, Missouri's estimated population is 9,413 with a growth rate of 0.09% in the past year according to the most recent United States census data. St. Clair County, Missouri is the 92nd largest county inMissouri. The 2010 Population was 9,823 and has seen a growth of -4.17% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20219,41380.09%
20209,40580.09%
20199,39780.09%
20189,389240.26%
20179,365770.83%
20169,288-123-1.31%
20159,411-21-0.22%
20149,432-55-0.58%
20139,487-40-0.42%
20129,527-166-1.71%
20119,693-130-1.32%
20109,8231,36616.15%
19908,457-165-1.91%
19808,62295512.46%
19707,667-754-8.95%
19608,421-2,061-19.66%
195010,482-2,664-20.26%
194013,146-143-1.08%
193013,289-2,052-13.38%
192015,341-1,071-6.53%
191016,412-1,495-8.35%
190017,9071,1606.93%
189016,7472,62218.56%
188014,1257,383109.51%
18706,742-70-1.03%
18606,8123,25691.56%
18503,5560.00%
2021 Growth Rate
0.09% (8)
County Website
Founded
January 29, 1841
County Seat
2010 Population
9,823
Growth Since 2010
-4.17% (-410)
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St. Clair County, Missouri Population Growth

Population by Race

Race Population Percentage
White8,95595.57%
Two or More Races2132.27%
American Indian and Alaska Native880.94%
Black or African American680.73%
Asian360.38%
Some Other Race100.11%
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St. Clair County, Missouri Population by Race

St. Clair County, Missouri Population Pyramid $2021

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St. Clair County, Missouri Median Age

50.3


Total

48.8


Male

51.9


Female

St. Clair County, Missouri Adults

There are 7,542 adults, (2,546 of whom are seniors) in St. Clair County, Missouri.

St. Clair County, Missouri Age Dependency

87.6

Age Dependency Ratio

51

Old Age Dependency Ratio

36.6

Child Dependency Ratio

St. Clair County, Missouri Sex Ratio

Female

4,715

50.32%

Male

4,655

49.68%

St. Clair County, Missouri Population by Age

St. Clair County, Missouri Renter vs Owner Occupied by Household Type

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St. Clair County, Missouri Household Types

Type Owner Renter
Female56.8%43.2%
Non Family70.6%29.4%
All78.3%21.7%
Male83.7%16.3%
Married86.6%13.4%

78.3%

Rate of Home Ownership

St. Clair County, Missouri Households and Families

Type Count Average Size Owned
All4,1392.1978.3
Married1,9952.8186.6
Non Family1,5971.1470.6
Male2762.9983.7
Female2713.156.8

2.75

Average Family Size

2.19

Average Household Size

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St. Clair County, Missouri Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2844.08%
9th to 12th Grade79411.40%
High School Graduate2,86641.14%
Some College1,53322.00%
Associates Degree5227.49%
Bachelors Degree6078.71%
Graduate Degree3615.18%
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St. Clair County, Missouri Educational Attainment by Sex (over 25)

St. Clair County, Missouri Educational Attainment by Race

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Race Total High School Bachelors
White6,6245,616957
2+ Races147105
Hispanic65657
Black5544
Native American40344
Asian3625
Other Race55

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

The highest rate of bachelors degrees is among white people with a rate of 14.45%.

St. Clair County, Missouri Educational Attainment by Race

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Name Average Male Female
Overall$27,157$35,994$20,552
Less Than 9th Grade$17,813$26,667$9,138
High School Graduate$24,533$36,384$14,519
Some College$30,028$40,341$25,469
Bachelors Degree$32,399$35,481$32,155
Graduate Degree$37,566$43,906$36,316

$27,157

Average Earnings

$35,994

Average Male

$20,552

Average Female

St. Clair County, Missouri Earnings by Educational Attainment

St. Clair County, Missouri Language by Age

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St. Clair County, Missouri Language

98.32% of St. Clair County, Missouri residents speak only English, while 1.68% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.01% of the population.

St. Clair County, Missouri Language

St. Clair County, Missouri Poverty by Race

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Name Total In Poverty Poverty Rate
White8,5991,46417.03%
Hispanic945255.32%
Multiple2022311.39%
Native8855.68%

17.12%

Overall Poverty Rate

15.86%

Male Poverty Rate

18.35%

Female Poverty Rate

Poverty in St. Clair County, Missouri

The race most likely to be in poverty in St. Clair County, Missouri is Hispanic, with 55.32% below the poverty level.

The race least likely to be in poverty in St. Clair County, Missouri is Native, with 5.68% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.97%. Among those working part-time, it was 20.96%, and for those that did not work, the poverty rate was 20.34%.

St. Clair County, Missouri Poverty

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Name Poverty
Less Than 9th Grade30.30%
High School16.12%
Bachelors or Greater8.70%
Some College5.94%

St. Clair County, Missouri Poverty Rate by Education

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Rate Poverty
Female Unemployed42.42%
Male Unemployed24.68%
Female Employed12.42%
Male Employed9.72%

St. Clair County, Missouri Poverty Rate by Employment Status and Sex

St. Clair County, Missouri Income by Household Type

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Name Median Mean
Households$38,870$51,397
Families$51,623$60,425
Married Families$57,245-
Non Families$25,815$34,142
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Income by Household Type

St. Clair County, Missouri Marital Status

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Marriage Rates

53.8%

Overall Marriage Rate

52.0%

Male Marriage Rate

55.6%

Female Marriage Rate

St. Clair County, Missouri Married by Age and Sex

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St. Clair County, Missouri Marriage

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

St. Clair County, Missouri Marital Status by Race

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St. Clair County, Missouri Marital Status

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1,035

Number of Veterans

997

Male Veterans

38

Female Veterans

War Veterans
Vietnam465
Second Gulf War115
First Gulf War104
Korea98
World War II25

St. Clair County, Missouri Veterans by War

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Age Group Veterans
65 to 74343
75+294
55 to 64177
35 to 54134
18 to 3487

St. Clair County, Missouri Veterans by Age

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Name Veterans % of Total
White97913.54%
2+ Races4125.47%
Hispanic1722.37%
Native American615.00%
Other Race5100.00%
Black45.88%

St. Clair County, Missouri Veterans by Race

St. Clair County, Missouri Veterans by Education

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13.67%

Veteran Poverty Rate

56.38%

Veteran Disability Rate

St. Clair County, Missouri Veterans by Education

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48.4%

Labor Force Participation

46.6%

Employment Rate

3.8%

Unemployment Rate

St. Clair County, Missouri Employment by Age

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St. Clair County, Missouri Employment by Race

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St. Clair 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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69.68%

Born in St. Clair County, Missouri

98.86%

Native Born

1.14%

Foreign Born

0.25%

Non Citizen

0.90%

Naturalized

Place of Birth

98.86% of St. Clair County, Missouri residents were born in the United States, with 69.68% having been born in Missouri. 0.25% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

St. Clair 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