Sangamon County, Illinois Population 2021

Sangamon County, Illinois's estimated population is 192,738 with a growth rate of -0.50% in the past year according to the most recent United States census data. Sangamon County, Illinois is the 12th largest county in Illinois. The 2010 Population was 197,769 and has seen a growth of -2.54% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021192,738-967-0.50%
2020193,705-967-0.50%
2019194,672-967-0.49%
2018195,639-1,433-0.73%
2017197,072-954-0.48%
2016198,026-872-0.44%
2015198,898-286-0.14%
2014199,184430.02%
2013199,141-263-0.13%
2012199,4043660.18%
2011199,0381,2690.64%
2010197,76919,38310.87%
1990178,3862,2971.30%
1980176,08914,7549.14%
1970161,33514,79610.10%
1960146,53915,05511.45%
1950131,48413,57211.51%
1940117,9126,1795.53%
1930111,73311,47111.44%
1920100,2629,23810.15%
191091,02419,43127.14%
190071,59310,39816.99%
189061,1958,30115.69%
188052,8946,54214.11%
187046,35214,07843.62%
186032,27413,04667.85%
185019,2284,51230.66%
184014,7161,75613.55%
183012,9600.00%
2021 Growth Rate
-0.50%
County Website
Founded
1821
County Seat
2010 Population
197,769
Growth Since 2010
-2.54%
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Sangamon County, Illinois Population Growth

Population by Race

Race Population Percentage
White161,18881.88%
Black or African American25,30312.85%
Two or More Races5,2142.65%
Asian4,0062.03%
Some Other Race8400.43%
American Indian and Alaska Native2050.10%
Native Hawaiian and Other Pacific Islander1050.05%
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Sangamon County, Illinois Population by Race

Sangamon County, Illinois Population Pyramid $2021

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Sangamon County, Illinois Median Age

40.3


Total

38.7


Male

41.7


Female

Sangamon County, Illinois Adults

There are 152,674 adults, (33,946 of whom are seniors) in Sangamon County, Illinois.

Sangamon County, Illinois Age Dependency

65.8

Age Dependency Ratio

28.6

Old Age Dependency Ratio

37.2

Child Dependency Ratio

Sangamon County, Illinois Sex Ratio

Female

102,365

52.00%

Male

94,496

48.00%

Sangamon County, Illinois Population by Age

Sangamon County, Illinois Renter vs Owner Occupied by Household Type

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Sangamon County, Illinois Household Types

Type Owner Renter
Married88.2%11.8%
All68.9%31.1%
Male64.7%35.3%
Non Family56.3%43.7%
Female45.8%54.2%

68.9%

Rate of Home Ownership

Sangamon County, Illinois Households and Families

Type Count Average Size Owned
All83,7112.368.9
Married35,7062.9788.2
Non Family33,4881.256.3
Female10,8723.2145.8
Male3,6453.1864.7

2.94

Average Family Size

2.3

Average Household Size

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Sangamon County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,5221.85%
9th to 12th Grade7,7805.70%
High School Graduate37,13127.19%
Some College30,92322.64%
Associates Degree11,1098.13%
Bachelors Degree29,42321.54%
Graduate Degree17,68412.95%
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Sangamon County, Illinois Educational Attainment by Sex (over 25)

Sangamon County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White115,813108,75241,800
Black14,06011,4602,454
Asian2,5482,3581,631
Hispanic2,5002,166798
2+ Races1,6201,499438
Other Race500391129
Native American1321098
Islander1019326

The highest rate of high school graduation is among white people with a rate of 93.90%.

The highest rate of bachelors degrees is among asian people with a rate of 64.01%.

Sangamon County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$43,169$50,391$37,123
Less Than 9th Grade$21,305$27,848$15,940
High School Graduate$31,233$38,288$25,801
Some College$39,094$44,697$34,138
Bachelors Degree$55,743$64,946$48,155
Graduate Degree$69,381$86,263$59,440

$43,169

Average Earnings

$50,391

Average Male

$37,123

Average Female

Sangamon County, Illinois Earnings by Educational Attainment

Sangamon County, Illinois Language by Age

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Sangamon County, Illinois Language

95.10% of Sangamon County, Illinois residents speak only English, while 4.90% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.69% of the population.

Sangamon County, Illinois Language

Sangamon County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White155,32515,86410.21%
Black24,4299,58339.23%
Multiple5,0791,26424.89%
Hispanic4,28973317.09%
Asian3,89166517.09%
Other81019924.57%
Native16021.25%

14.53%

Overall Poverty Rate

13.69%

Male Poverty Rate

15.30%

Female Poverty Rate

Poverty in Sangamon County, Illinois

The race most likely to be in poverty in Sangamon County, Illinois is Black, with 39.23% below the poverty level.

The race least likely to be in poverty in Sangamon County, Illinois is Native, with 1.25% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.47%. Among those working part-time, it was 17.50%, and for those that did not work, the poverty rate was 21.76%.

Sangamon County, Illinois Poverty

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Name Poverty
Less Than 9th Grade32.52%
High School14.28%
Some College11.04%
Bachelors or Greater3.83%

Sangamon County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed47.37%
Male Unemployed37.85%
Female Employed7.75%
Male Employed5.31%

Sangamon County, Illinois Poverty Rate by Employment Status and Sex

Sangamon County, Illinois Income by Household Type

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Name Median Mean
Households$61,912$82,375
Families$83,290$101,994
Married Families$100,158$123,511
Non Families$39,758$50,548
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Income by Household Type

Sangamon County, Illinois Marital Status

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Marriage Rates

46.6%

Overall Marriage Rate

48.9%

Male Marriage Rate

44.5%

Female Marriage Rate

Sangamon County, Illinois Married by Age and Sex

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Sangamon County, Illinois 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.

Sangamon County, Illinois Marital Status by Race

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Sangamon County, Illinois Marital Status

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12,642

Number of Veterans

11,722

Male Veterans

920

Female Veterans

War Veterans
Vietnam4,715
First Gulf War2,480
Second Gulf War2,337
Korea1,089
World War II326

Sangamon County, Illinois Veterans by War

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Age Group Veterans
65 to 743,447
35 to 543,007
75+2,849
55 to 642,257
18 to 341,082

Sangamon County, Illinois Veterans by Age

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Name Veterans % of Total
White11,4948.90%
Black8434.95%
2+ Races1747.54%
Hispanic1224.13%
Asian742.36%
Other Race417.35%
Native American115.39%
Islander54.95%

Sangamon County, Illinois Veterans by Race

Sangamon County, Illinois Veterans by Education

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7.46%

Veteran Poverty Rate

27.08%

Veteran Disability Rate

Sangamon County, Illinois Veterans by Education

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63.4%

Labor Force Participation

59.6%

Employment Rate

5.8%

Unemployment Rate

Sangamon County, Illinois Employment by Age

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Sangamon County, Illinois Employment by Race

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Sangamon County, Illinois 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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79.68%

Born in Sangamon County, Illinois

96.76%

Native Born

3.24%

Foreign Born

1.63%

Non Citizen

1.61%

Naturalized

Place of Birth

96.76% of Sangamon County, Illinois residents were born in the United States, with 79.68% having been born in Illinois. 1.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Sangamon County, Illinois 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