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COUNTY · 1990 CENSUS

Piatt County

Illinois · 15,548 residents · 439.188 sq mi
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The short version

Piatt County has roughly average household income, with a median household income of $31,369. Population has declined 5% since 2000. Median home value is $51,800. Poverty is rare here, at 6.1% of residents.

At a glance
Average income
near the US median
US median: $30,130
Older
median age 36.1
US median: 33.0
Less educated
16% hold a bachelor's degree
US average: 20%
More affordable
home values down 17%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
15,548
−5%vs 2000
vs 16,365 in 2000
1990 – 2025
Median age
36.1
−9%vs 2000
vs 39.6 in 2000
US average: 33.0
Population, 1990 – 2024
15K16K16K16K17K1990201020202024Piatt County
202417K
1990201020202024
Age distribution, 1990
Under 56.2%(964)
US avg: 7.3%
5 to 97.4%(1,144)
US avg: 7.3%
10 to 147.8%(1,216)
US avg: 6.9%
15 to 196.9%(1,072)
US avg: 7.1%
20 to 244.5%(694)
US avg: 7.5%
25 to 3415.4%(2,400)
US avg: 17.5%
35 to 4416.2%(2,518)
US avg: 15.1%
45 to 5410.5%(1,638)
US avg: 10.2%
55 to 649.7%(1,506)
US avg: 8.5%
65 to 748.6%(1,336)
US avg: 7.3%
75 to 845.1%(789)
US avg: 4%
85 and over1.7%(271)
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$31,369
−10%inflation adjusted, since 2000
vs $45,752 in 2000
US average: $30,130
1990 – 2024
Per capita income
$13,690
−35%vs 2000
vs $21,075 in 2000
US average: $14,340
Poverty rate
6.1%
+1.2 ptsvs 2000
vs 5.0% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$51,800
−17%inflation adjusted, since 2000
vs $82,100 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$350
Unchangedinflation adjusted, since 2000
vs $460 in 2000
US average: $450
Owner-occupied
76.5%
−3.7 ptsvs 2000
vs 80.2% in 2000
23.5% rent
RELATED:See current rent listings in Piatt County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98.3%(16,090)
Black0.2%(39)
Hispanic / Latino0.6%(101)
Asian0.1%(20)
Other0%
1990
White, non-Hispanic99.8%(15,511)
Black0%(5)
Hispanic / Latino0.3%(40)
Asian0%(0)
Other0.2%(32)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican0.8%(141)
Spaniard0.5%(84)
Asian origin
Filipino0.5%(82)
Korean0%(8)
Chinese0%(6)
Ancestry
German23.5%(3,930)
English17.3%(2,889)
Irish13.8%(2,305)
American5.9%(993)
Scottish2.3%(376)
Scotch-Irish1.7%(281)
Swedish1.6%(267)
Italian1.6%(266)
Polish1.5%(246)
French1.3%(224)
Dutch1.3%(209)
Norwegian1%(175)
+ 17 more ancestry groups with data
Welsh0.9%(155)
Czech0.8%(127)
Hungarian0.7%(117)
Swiss0.5%(88)
Greek0.4%(69)
British0.3%(53)
Russian0.3%(53)
Austrian0.3%(45)
Slovak0.2%(39)
Arab0.2%(28)
Lebanese0.2%(28)
Croatian0.1%(16)
Danish0.1%(9)
Belgian0%(6)
RANKED:Largest German population · Largest English population · Largest Irish population · Largest American population · Largest Scottish population
Section 05

Education

Bachelor's degree or higher
15.9%
−5.2 ptsvs 2000
vs 21.0% in 2000
US average: 20.3%
High school or higher
83.0%
−5.7 ptsvs 2000
vs 88.7% in 2000
US average: 75.2%
Graduate degree
5.2%
−2.4 ptsvs 2000
vs 7.6% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
24.6 min
+55%vs 2000
vs 15.9 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)
Men 15+
Never married26.2%(1,781)
Married62%(4,219)
Widowed3.1%(212)
Divorced8.7%(593)
Women 15+
Never married19.5%(1,345)
Married61.4%(4,241)
Widowed8.2%(563)
Divorced10.9%(756)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

Places similar to Piatt County

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Pop 16,496
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Pop 16,625
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Pop 17,439
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Pop 13,549
Places similar to Piatt County
Head to head

Compare Piatt County to nearby counties

PIATT COUNTY VS
De Witt County
Income$71,678+128%
Home value$130,300+152%
Population15,118−10%
SEE FULL COMPARISON →
PIATT COUNTY VS
Macon County
Income$62,666+100%
Home value$127,300+146%
Population99,300+491%
SEE FULL COMPARISON →
PIATT COUNTY VS
Champaign County
Income$63,683+103%
Home value$211,500+308%
Population209,972+1151%
SEE FULL COMPARISON →
PIATT COUNTY VS
Moultrie County
Income$71,784+129%
Home value$134,000+159%
Population14,371−14%
SEE FULL COMPARISON →
Frequently asked

How many people live in Piatt County, Illinois?

Piatt County, Illinois has about 15,548 residents according to the 1990 Census.

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

The typical household in Piatt County, Illinois earns about $31,369 a year. Half of households make more than that, and half make less.

Is Piatt County, Illinois expensive?

In Piatt County, Illinois, the median home is worth about $51,800, and the typical rent is about $350 a month.

How educated are people in Piatt County, Illinois?

About 15.9% of adults age 25 and over in Piatt County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Piatt County, Illinois?

About 6.1% of people in Piatt County, Illinois live below the federal poverty line.

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Explore from here

4 census tracts
Census Tract 9546Census Tract 9545Census Tract 9547Census Tract 9548
11 ZIP codes
ZIP 61856ZIP 61813ZIP 61818ZIP 61913ZIP 61854ZIP 61884ZIP 61929ZIP 61839ZIP 61830ZIP 61936ZIP 61855
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →