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Sangamon County, Illinois Demographics 2026

Sangamon County, Illinois has a population of 194,947, the 11th most populous county in Illinois. The median household income is $75,357 and the median home value is $176,300. The poverty rate is 13.1%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Sangamon County Quick Facts

Population 194,947
Median Household Income $75,357
Median Home Value $176,300
Poverty Rate 13.1%
Unemployment Rate 5.4%
Median Age 41.0 years
Homeownership Rate 71.3%
Affordability Ratio 2.3x
Bachelor's Degree+ 36.6%
High School Graduation 94.1%
Cities/Places 26
Population 194,947 11th of 102
Median Income $75,357 10% lower than state
Poverty Rate 13.1%
Unemployment 5.4%

How Sangamon County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric2019–20232020–2024Change
Population195,217194,947-0.1%
Median household income$74,114$75,357+1.7%
Median home value$170,300$176,300+3.5%

Economy & Housing

Household Income Distribution

Under $25K 16.3%
$25K-$50K 17.5%
$50K-$100K 29.0%
$100K+ 37.2%
Detailed income brackets
Under $10K
6.2%
$10K-$15K
3.9%
$15K-$20K
2.9%
$20K-$25K
3.3%
$25K-$30K
2.5%
$30K-$35K
3.5%
$35K-$40K
3.6%
$40K-$45K
4.7%
$45K-$50K
3.2%
$50K-$60K
6.4%
$60K-$75K
9.6%
$75K-$100K
13.0%
$100K-$125K
10.5%
$125K-$150K
7.6%
$150K-$200K
9.2%
$200K+
9.9%

Employment

5.4% Unemployment Rate State: 5.8%|National: 5.2%
61.3% Labor Force Participation

Housing Overview

Owner 71.3%
Renter 28.7%
Affordability Index Very Affordable
2.3x home value to income ratio
Median gross rent $983/mo 15.7% of median household income annually

People & Demographics

Diversity Index

38out of 100
Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 61 | National average: 61

Education

Cities & Places in Sangamon County

CityPopulationMedian IncomePovertyHome Value
Springfield113,330$66,06416.8%$162,100
Chatham14,639$106,7733.3%$243,200
Sherman4,386$148,9062.2%$297,800
Auburn4,306$81,4118.1%$149,600
Rochester3,766$117,1182.5%$238,900
Riverton3,513$80,9200.9%$152,200
Virden3,171$80,57710.2%$101,300
Pawnee2,738$81,10314.2%$149,500
Jerome1,807$65,1896.4%$127,800
Southern View1,751$57,27014.9%$105,300
Leland Grove1,517$130,8332.9%$274,300
New Berlin1,442$70,1796.5%$163,400
Williamsville1,314$106,7316.9%$199,300
Grandview1,243$48,81926.6%$71,500
Divernon1,164$71,75016.1%$133,700
Illiopolis890$63,1256.0%$100,800
Pleasant Plains886$89,6433.2%$169,000
Spaulding879$105,1143.1%$220,500
Loami782$57,81312.9%$131,900
Mechanicsburg728$93,1258.6%$188,800
Dawson536$76,3396.6%$91,000
Thayer531$62,08310.5%$97,100
Buffalo482$56,25016.6%$112,100
Cantrall142$87,50012.7%$145,800
Curran115$53,7508.8%$107,100
Berlin103$66,25011.7%N/A

Explore Illinois Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Sangamon County is located in Illinois with a total population of 194,947. It is the 11th most populous county out of 102 in Illinois. The county encompasses 26 Census-designated places.

Age Demographics

The median age in Sangamon County is 41.0 years. This is 5% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Sangamon County is $75,357. This is 10% lower than the state median of $83,390. It is also 7% lower than the national median of $80,734. The poverty rate stands at 13.1%. This is 11% higher than the state poverty rate of 11.8%. The unemployment rate is 5.4%. This is 7% lower than the state rate of 5.8%. The median home value is $176,300. Housing costs are 33% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.3x, Sangamon County is one of the most affordable housing markets in the area. 71.3% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 67.1%.

Race & Ethnicity

The largest racial or ethnic group in Sangamon County is White (non-Hispanic), making up 77.3% of the population. Black or African American residents account for 12.5%. The Hispanic or Latino population (2.9%) is well below the state average of 18.8%. The Asian population (2.3%) is well below the state average of 5.9%.

Education

36.6% of residents aged 25 and older hold a bachelor's degree or higher. This places Sangamon County in the top 10% of all counties in the state for educational attainment. This is 3% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.1%.

Data Sources & Methodology

All figures for Sangamon County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Illinois and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Sangamon County, Illinois?

Sangamon County has a population of 194,947, making it the 11th most populous county in Illinois.

What is the median income in Sangamon County?

The median household income in Sangamon County is $75,357 with a poverty rate of 13.1%.

How many cities are in Sangamon County, Illinois?

Sangamon County contains 26 Census-designated places.