Sangamon County, Illinois Population 2020

Sangamon County, Illinois's estimated population is 192,266 with a growth rate of -0.80% in the past year according to the most recent United States census data. Sangamon County, Illinois is the 11th largest county in Illinois.

Year Population Growth Growth Rate
2020192,266-1,541-0.80%
2019193,807-1,541-0.79%
2018195,348-1,541-0.78%
2017196,889-1,115-0.56%
2016198,004-880-0.44%
2015198,884-296-0.15%
2014199,180490.02%
2013199,131-259-0.13%
2012199,3903740.19%
2011199,0161,2490.63%
2010197,76719,38110.86%
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%
2020 Growth Rate
-0.80%
County Website
Founded
1821
County Seat

Sangamon County, Illinois Population Growth

Population by Race

Race Population Percentage
White161,82881.87%
Black or African American25,26012.78%
Two or More Races5,0892.57%
Asian3,8681.96%
Some Other Race1,2900.65%
American Indian and Alaska Native2300.12%
Native Hawaiian and Other Pacific Islander960.05%

Sangamon County, Illinois Population Pyramid 2020

Sangamon County, Illinois Median Age

40


Total

38.4


Male

41.6


Female

Sangamon County, Illinois Adults

There are 153,047 adults, (32,977 of whom are seniors) in Sangamon County, Illinois.

Sangamon County, Illinois Age Dependency

64.6

Age Dependency Ratio

27.5

Old Age Dependency Ratio

37.2

Child Dependency Ratio

Sangamon County, Illinois Sex Ratio

Female

102,785

52.00%

Male

94,876

48.00%

Sangamon County, Illinois Households and Families

Sangamon County, Illinois Renter vs Owner Occupied by Household Type

Sangamon County, Illinois Household Types

Type Owner Renter
Married88.1%11.9%
All68.9%31.1%
Male61.2%38.8%
Non Family56.6%43.4%
Female45.4%54.6%

68.9%

Rate of Home Ownership

Type Count Average Size Owned
All83,6612.3168.9
Married36,0562.9788.1
Non Family33,0311.2156.6
Female10,9033.1745.4
Male3,6713.2361.2

2.94

Average Family Size

2.31

Average Household Size

5.8%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Sangamon County, Illinois Education

Education Attained Count Percentage
Less Than 9th Grade2,4381.78%
9th to 12th Grade7,9835.84%
High School Graduate38,06327.85%
Some College30,53922.35%
Associates Degree10,9358.00%
Bachelors Degree29,45721.55%
Graduate Degree17,25112.62%

Sangamon County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White116,238109,00241,354
Black13,89111,2862,416
Asian2,5182,3711,657
Hispanic2,4362,118805
Multiple Races1,5631,411412
Other Race621522206
Native American15413118
Islander938321

The highest rate of high school graduation is among asian people with a rate of 94.16%.

The highest rate of bachelors degrees is among asian people with a rate of 65.81%.

Name Average Male Female
Overall$41,551$48,929$35,326
Less Than High School$19,932$26,273$14,483
High School Grad$30,168$36,321$25,253
Some College$38,056$44,018$33,002
Bachelors Degree$54,433$67,019$44,829
Graduate Degree$68,200$85,859$57,359

$41,551

Average Earnings

$48,929

Average Male

$35,326

Average Female

Sangamon County, Illinois Language

Sangamon County, Illinois Language by Age

Sangamon County, Illinois Language

95.26% of Sangamon County, Illinois residents speak only English, while 4.74% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.68% of the population.

Sangamon County, Illinois Poverty

Sangamon County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White156,24716,67210.67%
Black24,43210,01540.99%
Multiple4,9451,16323.52%
Hispanic4,19780819.25%
Asian3,75468618.27%
Other1,21447238.88%
Native18252.75%

15.21%

Overall Poverty Rate

14.19%

Male Poverty Rate

16.15%

Female Poverty Rate

Poverty in Sangamon County, Illinois

The race most likely to be in poverty in Sangamon County, Illinois is Black, with 40.99% below the poverty level.

The race least likely to be in poverty in Sangamon County, Illinois is Native, with 2.75% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.61%. Among those working part-time, it was 18.79%, and for those that did not work, the poverty rate was 22.45%.

Name Poverty
Less Than High School34.48%
High School14.01%
Some College11.47%
Bachelors or Greater4.03%
Name Poverty
Female Unemployed47.48%
Male Unemployed38.58%
Female Employed8.80%
Male Employed5.09%

Sangamon County, Illinois Income

Sangamon County, Illinois Income by Household Type

Name Median Mean
Households$60,466$80,536
Families$80,129$99,193
Married Families$97,034$120,340
Non Families$38,034$49,500

Sangamon County, Illinois Marital Status

Sangamon County, Illinois Marital Status

Marriage Rates

46.8%

Overall Marriage Rate

49.2%

Male Marriage Rate

44.7%

Female Marriage Rate

Sangamon County, Illinois Married by Age and Sex

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

Sangamon County, Illinois Veterans

12,912

Number of Veterans

11,955

Male Veterans

957

Female Veterans

War Veterans
Vietnam4,959
First Gulf War2,417
Second Gulf War2,035
Korea1,266
World War II487
Age Group Veterans
65 to 743,511
75+3,062
35 to 542,905
55 to 642,377
18 to 341,057
Name Veterans % of Total
White11,6488.99%
Black9955.85%
2 or More1406.58%
Hispanic1224.23%
Asian682.19%
Other405.67%
Indian156.55%
Hawaiian66.45%

$Sangamon County, Illinois Veterans by Education

8.73%

Veteran Poverty Rate

30.00%

Veteran Disability Rate

Sangamon County, Illinois Employment Status

64.3%

Labor Force Participation

60.2%

Employment Rate

6.3%

Unemployment Rate

Sangamon County, Illinois Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

80.10%

Born in Illinois

96.92%

Native Born

3.08%

Foreign Born

1.62%

Non Citizen

Place of Birth

96.92% of Sangamon County, Illinois residents were born in the United States, with 80.10% having been born in Illinois. 1.62% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

  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