Randolph County, Illinois Demographics 2026

Name: Randolph County, Illinois Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Randolph County, Illinois has a population of 30,058, the 47th most populous county in Illinois. The median household income is $68,131 and the median home value is $135,100. The poverty rate is 14.6%.

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

Randolph County Quick Facts

Population 30,058

Median Household Income $68,131

Median Home Value $135,100

Poverty Rate 14.6%

Unemployment Rate 5.0%

Median Age 43.7 years

Homeownership Rate 76.6%

Affordability Ratio 2.0x

Bachelor's Degree+ 15.3%

High School Graduation 87.1%

Cities/Places 14

Population 30,058 47th of 102

Median Income $68,131 18% lower than state

Poverty Rate 14.6%

Unemployment 5.0%

How Randolph County Changed

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

Metric	2019–2023	2020–2024	Change
Population	30,142	30,058	-0.3%
Median household income	$68,870	$68,131	-1.1%
Median home value	$134,100	$135,100	+0.7%

Median Household Income

Randolph

$68,131

$83,390

National

$80,734

Median Home Value

Randolph

$135,100

$263,300

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 16.6%

$25K-$50K 20.3%

$50K-$100K 31.3%

$100K+ 31.8%

Detailed income brackets

Under $10K

4.7%

$10K-$15K

3.5%

$15K-$20K

3.1%

$20K-$25K

5.2%

$25K-$30K

4.9%

$30K-$35K

3.4%

$35K-$40K

4.5%

$40K-$45K

4.2%

$45K-$50K

3.4%

$50K-$60K

5.6%

$60K-$75K

12.2%

$75K-$100K

13.5%

$100K-$125K

11.5%

$125K-$150K

7.6%

$150K-$200K

8.8%

$200K+

3.8%

Employment

5.0% Unemployment Rate State: 5.8%|National: 5.2%

53.1% Labor Force Participation

Housing Overview

Owner 76.6%

Renter 23.4%

Affordability Index Very Affordable

2.0x home value to income ratio

Median gross rent $780/mo 13.7% of median household income annually

People & Demographics

Age Distribution

Under 18

20.2%

18-34

18.8%

35-54

24.9%

55-74

27.0%

75+

9.1%

Race & Ethnicity

Diversity Index

Low Diversity

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

State average: 61 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Randolph County

City	Population	Median Income	Poverty	Home Value
Chester	6,797	$80,625	21.6%	$111,700
Sparta	4,068	$52,188	24.4%	$111,200
Red Bud	3,782	$71,850	4.9%	$171,000
Steeleville	1,855	$60,313	22.5%	$158,500
Percy	921	$44,015	15.8%	$77,200
Coulterville	796	$48,636	12.1%	$82,300
Evansville	781	$65,750	22.5%	$88,200
Tilden	762	$47,857	28.7%	$70,300
Prairie du Rocher	454	$66,161	8.2%	$88,800
Ruma	394	$75,000	4.6%	$125,600
Ellis Grove	359	$82,813	5.3%	$78,300
Baldwin	355	$46,771	25.9%	$87,500
Kaskaskia	38	$150,313	0.0%	$145,800
Rockwood	14	$59,375	0.0%	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

Randolph County is located in Illinois with a total population of 30,058. It is the 47th most populous county out of 102 in Illinois. The county encompasses 14 Census-designated places.

Age Demographics

The median age in Randolph County is 43.7 years. This is 12% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Randolph County is $68,131. This is 18% lower than the state median of $83,390. It is also 16% lower than the national median of $80,734. The poverty rate stands at 14.6%. This is 24% higher than the state poverty rate of 11.8%. The unemployment rate is 5.0%. This is 14% lower than the state rate of 5.8%. The median home value is $135,100. Housing costs are 49% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.0x, Randolph County is one of the most affordable housing markets in the area. 76.6% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 67.1%.

Race & Ethnicity

Randolph County has a predominantly White (non-Hispanic) population, comprising 85.2% of all residents. Black or African American residents account for 8.2%. The Hispanic or Latino population (3.8%) is well below the state average of 18.8%. The Asian population (0.6%) is well below the state average of 5.9%.

Education

15.3% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 60% 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 87.1%.

Data Sources & Methodology

All figures for Randolph 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 Randolph County, Illinois?

Randolph County has a population of 30,058, making it the 47th most populous county in Illinois.

What is the median income in Randolph County?

The median household income in Randolph County is $68,131 with a poverty rate of 14.6%.

How many cities are in Randolph County, Illinois?

Randolph County contains 14 Census-designated places.