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COUNTY · 2000 CENSUS

Johnson County

Illinois · 12,878 residents · 343.736 sq mi
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The short version

Johnson County has lower-than-average household income, with a median household income of $33,326. Population has held roughly steady since 1990. 12% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value has risen by half since 1990, reaching $63,400. Households here earn about 28% less than the Illinois median.

At a glance
Lower income
below the US median
US median: $42,589
Mid-age
median age 36.7
US median: 35.2
Less educated
12% hold a bachelor's degree
US average: 24%
Less affordable
home values up 33%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
12,878
+13%since 1990
from 11,347 in 1990
1990 – 2025
Population density
37 / sq mi
+13%since 1990
from 33 / sq mi in 1990
US average: 242
Median age
36.7
+3%since 1990
from 35.5 in 1990
US average: 35.2
Population, 1990 – 2024
11K12K13K13K14K1990201020202024Johnson County
202413K
1990201020202024
Section 02

Income & economy

Median household income
$33,326
+15%inflation adjusted, since 1990
from $21,953 in 1990
US average: $42,589
1990 – 2024
Per capita income
$17,990
+96%since 1990
from $9,170 in 1990
US average: $21,522
Poverty rate
11.3%
−4.2 ptssince 1990
from 15.6% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$63,400
+33%inflation adjusted, since 1990
from $36,300 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$351
+13%inflation adjusted, since 1990
from $235 in 1990
US average: $602
Owner-occupied
84.7%
+3.0 ptssince 1990
from 81.7% in 1990
15.3% rent
Afford Score
1.9
+15%since 1990
from 1.7 in 1990
1990 – 2024
RELATED:See current rent listings in Johnson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic90%(10,211)
Black9.3%(1,051)
Hispanic / Latino2.2%(249)
Asian0%(0)
Diversity Score27%(3,062)
2000
White, non-Hispanic81.9%(10,553)
Black14.1%(1,821)
Hispanic / Latino2.9%(368)
Asian0.1%(17)
Diversity Score36.8%(4,744)
Diversity Score
37
+37%since 1990
from 27 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
11.7%
+2.6 ptssince 1990
from 9.1% in 1990
US average: 24.4%
High school or higher
67.1%
+0.9 ptssince 1990
from 66.2% in 1990
US average: 80.3%
Graduate degree
4.4%
+0.9 ptssince 1990
from 3.4% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
19.7 min
−16%since 1990
from 23.3 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Johnson County

Ford County
Pop 13,216
Bleckley County
Pop 12,866
Charlton County
Pop 13,121
Franklin County
Pop 13,029
Places similar to Johnson County
Head to head

Compare Johnson County to nearby counties

JOHNSON COUNTY VS
Williamson County
Income$65,604+97%
Home value$156,400+147%
Population67,225+403%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Pope County
Income$60,050+80%
Home value$143,800+127%
Population3,672−73%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Massac County
Income$65,116+95%
Home value$121,900+92%
Population13,502+1%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Union County
Income$55,728+67%
Home value$131,700+108%
Population16,656+25%
SEE FULL COMPARISON →
Frequently asked

How many people live in Johnson County, Illinois?

Johnson County, Illinois has about 12,878 residents according to the 2000 Census.

What is the median household income in Johnson County, Illinois?

The typical household in Johnson County, Illinois earns about $33,326 a year. Half of households make more than that, and half make less.

Is Johnson County, Illinois expensive?

In Johnson County, Illinois, the median home is worth about $63,400, and the typical rent is about $351 a month.

How educated are people in Johnson County, Illinois?

About 11.7% of adults age 25 and over in Johnson County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Johnson County, Illinois?

About 11.3% of people in Johnson County, Illinois live below the federal poverty line.

Has Johnson County, Illinois grown since 1990?

Yes, Johnson County, Illinois has grown since 1990. The population has added about 1,531 residents, a change of about 13 percent over that period.

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Explore from here

4 census tracts
Census Tract 9776Census Tract 9778Census Tract 9777Census Tract 9800
7 ZIP codes
ZIP 62995ZIP 62939ZIP 62912ZIP 62972ZIP 62923ZIP 62943ZIP 62967
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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