US Census Data

Clay County, Illinois

6 cities & places have their primary county here.

Population
13,173
-0.9%’19–’23
Median household income
$57,266
+18.1%’19–’23
Median home value
$94,300
+11.6%’19–’23

Home to 13,173 residents, Clay County is one of Illinois's counties. 6 cities and places have their primary county here. At $57,266, its median household income sits below Illinois's $81,702.

From 2019 to 2023, Clay County's population held roughly steady from 13,287 to 13,173, while its median household income rose 18.1% from $48,500 to $57,266.

The typical home was built around 1973. 16.7% of residents live below the poverty line.

Demographics

ACS 2019–2023
Population
13,173
Median age
41.5 yrs
Median household income
$57,266
Median home value
$94,300
Median gross rent
$709
Housing units
6,147
Homeownership rate
80.7%
Bachelor's degree or higher
15.6%
Unemployment rate
5.9%

Trends

ACS 5-year · 2019–2023
Population
13,28713,173
Median household income
$48,500$57,266
Median home value
$84,500$94,300
Median gross rent
$604$709
YearPopulationMedian household incomeMedian home valueMedian gross rent
201913,287$48,500$84,500$604
202013,217$52,167$84,400$625
202113,313$53,900$93,700$662
202213,248$58,028$103,600$706
202313,173$57,266$94,300$709

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

CountShare
Under 57325.6%
5 to 172,30217.5%
18 to 249217.0%
25 to 341,54311.7%
35 to 441,56211.9%
45 to 541,52711.6%
55 to 641,84814.0%
65 to 741,59812.1%
75 and over1,1408.7%

Race & ethnicity

CountShare
White (non-Hispanic)12,52095.0%
Black or African American930.7%
American Indian & Alaska Native270.2%
Asian400.3%
Native Hawaiian & Pacific Islander00.0%
Some other race240.2%
Two or more races3812.9%
Hispanic or Latino (any race)880.7%

Educational attainment (age 25+)

CountShare
No high school diploma1,13312.3%
High school graduate3,37436.6%
Some college or associate's3,27535.5%
Bachelor's degree92410.0%
Graduate or professional degree5125.6%

Commute to work

Mean travel time to work
26 min

How workers get to work

CountShare
Drove alone4,74685.5%
Carpooled3937.1%
Public transit180.3%
Walked450.8%
Bicycle00.0%
Worked from home3436.2%
Other means40.1%

Travel time

CountShare
Under 15 min2,35445.2%
15 to 29 min1,25024.0%
30 to 44 min76714.7%
45 to 59 min3606.9%
60+ min4759.1%

Households

Average household size
2.36
Poverty rate
16.7% (2,160 of 12,923)
CountShare
Family households3,34361.6%
Nonfamily households2,08838.4%

Housing

Median year structure built
1973

Occupancy

CountShare
Occupied5,43188.4%
Vacant71611.6%

Tenure (of occupied units)

CountShare
Owner-occupied4,38380.7%
Renter-occupied1,04819.3%

Units in structure

CountShare
1-unit, detached4,51773.5%
1-unit, attached190.3%
2 to 4 units1843.0%
5 to 19 units1452.4%
20 or more units1222.0%
Mobile home & other1,16018.9%

Geography

County GEOID
17025
State
Illinois
Land area
468 sq mi
Water area
1.18 sq mi
Center point
38.7468, -88.4823

Cities & places

6

Compare with nearby counties

5

Illinois rankings

21

Other counties in Illinois

101