Piatt County, Illinois Population 2024

16,753

Piatt County, Illinois's estimated 2024 population is 16,753 with a growth rate of 0.23% in the past year according to the most recent United States census data. Piatt County, Illinois is the 61st largest county in Illinois. The 2010 population was 16,710 and has seen a growth of 0.26% since that time.

Note: data after 2022 is projected based on recent change

35 Rows

Year
Population
Growth
Change
202916,948390.23%
202816,909390.23%
202716,870390.23%
202616,831390.23%
202516,792390.23%
202416,753390.23%
202316,714390.23%
202216,675-82-0.49%
202116,757760.46%
202016,6812901.77%
201916,391160.1%
201816,375-52-0.32%
201716,427-84-0.51%
201616,5111550.95%
201516,356-58-0.35%
201416,414-23-0.14%
201316,437-68-0.41%
201216,505-178-1.07%
201116,683-27-0.16%
201016,71000%
199015,548-1,033-6.23%
198016,5811,0726.91%
197015,5095493.67%
196014,9609907.09%
195013,970-689-4.7%
194014,659-929-5.96%
193015,588-126-0.8%
192015,714-662-4.04%
191016,376-1,330-7.51%
190017,7066443.77%
189017,0621,4799.49%
188015,5834,63042.27%
187010,9534,82678.77%
18606,1274,521281.51%
18501,606-15,342-90.52%
2024 Growth Rate
0.23% (39)
County Website
Piatt County
County Seat
Monticello
2020 Population
16,681
Area
439 mi²
Density
38 people/mi²
Growth Since 2020
0.43% (72)
Founded
1841

Population by Race

Race
Population
Percentage (of total)
White16,03596.03%
Two or more races4392.63%
Black or African American1630.98%
Other race340.2%
Native American150.09%
Asian120.07%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Black or African American

Other race

Native American

Asian

Native Hawaiian or Pacific Islander

Piatt County, Illinois Population by Race

Piatt County, Illinois Population Pyramid 2024

Piatt County, Illinois Median Age

41.8

Total

41.2

Male

43.1

Female

Piatt County, Illinois Adults

There are 13,029 adults, (3,383 of whom are seniors) in Piatt County, Illinois.

Piatt County, Illinois Age Dependency

73.1

Age Dependency Ratio

35.1

Old Age Dependency Ratio

38

Child Dependency Ratio

Piatt County, Illinois Sex Ratio

Female8,47150.73%
Male8,22749.27%

Piatt County, Illinois Population by Age

Piatt County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,7832.4583.316.7
Married3,836394.25.8
Non Family2,1551.1570.729.3
Female5773.2862.237.8
Male2153.3771.628.4

2.96

Average Family Size

2.45

Average Household Size

83.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Piatt County, Illinois Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade5744.85%
Associates Degree1,31911.14%
Bachelors Degree2,31819.58%
Graduate Degree1,33211.25%
High School Graduate3,80832.16%
Less Than 9th Grade1541.3%
Some College2,33519.72%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Piatt County, Illinois Educational Attainment by Sex (over 25)

Piatt County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White11,45210,7473,516
2+ Races19219291
Hispanic15513387
Black10510415
Other Race222214
Asian12128
Native American1192

The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 66.67%.

Piatt County, Illinois Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$57,993$62,059$51,193
Graduate Degree$72,596$134,271$69,000
High School Graduate$37,941$47,309$29,344
Less Than 9th Grade$48,412$49,109$31,691
Overall$50,000$56,323$42,603
Some College$48,388$59,918$37,139

$50,000

Average Earnings

$56,323

Average Male

$42,603

Average Female

Piatt County, Illinois Earnings by Educational Attainment

Piatt County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Piatt County, Illinois Language

97.8% of Piatt County, Illinois residents speak only English, while 2.2% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.54% of the population.

Piatt County, Illinois Language

Piatt County, Illinois Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White15,8941,0726.74%
Multiple4398719.82%
Black1532616.99%
Hispanic25141.59%
Asian1218.33%

7.15%

Overall Poverty Rate

6.48%

Male Poverty Rate

7.81%

Female Poverty Rate

Poverty in Piatt County, Illinois

The race most likely to be in poverty in Piatt County, Illinois is Multiple, with 19.82% below the poverty level.

The race least likely to be in poverty in Piatt County, Illinois is Hispanic, with 1.59% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.88%. Among those working part-time, it was 10.86%, and for those that did not work, the poverty rate was 13.24%.

Piatt County, Illinois Poverty

rate

Rate
Poverty
Less Than 9th Grade11.42%
High School11.12%
Some College6.26%
Bachelors or Greater1.68%

Piatt County, Illinois Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed34.29%
Male Unemployed30.8%
Female Employed4.07%
Male Employed2.53%

Piatt County, Illinois Poverty Rate by Employment Status and Sex

Piatt County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$100,231$118,930
Households$81,151$100,385
Married Families$109,324$-999,999,999
Non Families$44,350$53,778

mean

median

Income by Household Type

Piatt County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

57.9%

Overall Marriage Rate

58.6%

Male Marriage Rate

57.2%

Female Marriage Rate

Piatt County, Illinois Married by Age and Sex

male

female

Piatt County, Illinois Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Piatt County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Piatt County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

750

Number of Veterans

704

Male Veterans

46

Female Veterans

War
Veterans
Vietnam293
Korea156
First Gulf War116
Second Gulf War75
World War II20

Piatt County, Illinois Veterans by War

count

Age Group
Veterans
75+295
65 to 74228
35 to 54120
55 to 6475
18 to 3432

Piatt County, Illinois Veterans by Age

count

Name
Veterans
% of Total
White7430.05894018721243852
Hispanic70.041666666666666664
Black30.022556390977443608
Native American20.18181818181818182
2+ Races20.008658008658008658

Piatt County, Illinois Veterans by Race

Piatt County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.11%

Veteran Poverty Rate

32.3%

Veteran Disability Rate

Piatt County, Illinois Veterans by Education

LaborForceParticipation

64.7%

Labor Force Participation

61.6%

Employment Rate

4.7%

Unemployment Rate

Piatt County, Illinois Employment by Age

LaborForceParticipation

Piatt County, Illinois Employment by Race

LaborForceParticipation

Piatt County, Illinois Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

83.05%

Born in Piatt County, Illinois

99.32%

Native Born

0.68%

Foreign Born

0.2%

Non Citizen

0.48%

Naturalized

Place of Birth

99.32% of Piatt County, Illinois residents were born in the United States, with 83.05% having been born in Illinois. 0.2% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Piatt County, Illinois Place of Birth

Sources