Piatt County, Illinois Population 2021

Piatt County, Illinois's estimated population is 16,300 with a growth rate of -0.13% in the past year according to the most recent United States census data. Piatt County, Illinois is the 66th largest county in Illinois. The 2010 Population was 16,709 and has seen a growth of -2.45% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202116,300-22-0.13%
202016,322-22-0.13%
201916,344-22-0.13%
201816,366-56-0.34%
201716,422-102-0.62%
201616,5241741.06%
201516,350-59-0.36%
201416,409-20-0.12%
201316,429-72-0.44%
201216,501-178-1.07%
201116,679-30-0.18%
201016,7091,1617.47%
199015,548-1,033-6.23%
198016,5811,0726.91%
197015,5095493.67%
196014,9609907.09%
195013,970-689-4.70%
194014,659-929-5.96%
193015,588-126-0.80%
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%
18501,6060.00%
2021 Growth Rate
-0.13%
County Website
Founded
1841
County Seat
2010 Population
16,709
Growth Since 2010
-2.45%
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Piatt County, Illinois Population Growth

Population by Race

Race Population Percentage
White15,91497.03%
Two or More Races2601.59%
Black or African American910.55%
Asian880.54%
Some Other Race390.24%
American Indian and Alaska Native90.05%
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Piatt County, Illinois Population by Race

Piatt County, Illinois Population Pyramid $2021

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Piatt County, Illinois Median Age

42.9


Total

41.8


Male

43.7


Female

Piatt County, Illinois Adults

There are 12,705 adults, (3,134 of whom are seniors) in Piatt County, Illinois.

Piatt County, Illinois Age Dependency

71.4

Age Dependency Ratio

32.7

Old Age Dependency Ratio

38.6

Child Dependency Ratio

Piatt County, Illinois Sex Ratio

Female

8,325

50.76%

Male

8,076

49.24%

Piatt County, Illinois Population by Age

Piatt County, Illinois Renter vs Owner Occupied by Household Type

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Piatt County, Illinois Household Types

Type Owner Renter
Married92.8%7.2%
All82.5%17.5%
Non Family70.7%29.3%
Female61.4%38.6%
Male61.3%38.7%

82.5%

Rate of Home Ownership

Piatt County, Illinois Households and Families

Type Count Average Size Owned
All6,6922.4482.5
Married3,9112.9692.8
Non Family1,9701.0970.7
Female5113.2361.4
Male3003.1261.3

2.93

Average Family Size

2.44

Average Household Size

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Piatt County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1601.38%
9th to 12th Grade5494.74%
High School Graduate3,93033.93%
Some College2,21819.15%
Associates Degree1,41712.23%
Bachelors Degree2,22019.16%
Graduate Degree1,0909.41%
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Piatt County, Illinois Educational Attainment by Sex (over 25)

Piatt County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White11,22610,5723,163
Hispanic13813063
2+ Races13311736
Black493018
Asian423025
Other Race303030
Native American999

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among native american people with a rate of 100.00%.

Piatt County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$42,610$50,490$36,268
Less Than 9th Grade$33,603$37,500$13,250
High School Graduate$31,863$42,833$24,625
Some College$40,685$49,778$32,188
Bachelors Degree$52,806$67,188$48,779
Graduate Degree$53,083$54,444$52,318

$42,610

Average Earnings

$50,490

Average Male

$36,268

Average Female

Piatt County, Illinois Earnings by Educational Attainment

Piatt County, Illinois Language by Age

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Piatt County, Illinois Language

97.10% of Piatt County, Illinois residents speak only English, while 2.90% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.15% of the population.

Piatt County, Illinois Language

Piatt County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White15,7447414.71%
Asian887281.82%
Multiple260207.69%
Black53916.98%
Hispanic22262.70%

5.18%

Overall Poverty Rate

5.36%

Male Poverty Rate

5.01%

Female Poverty Rate

Poverty in Piatt County, Illinois

The race most likely to be in poverty in Piatt County, Illinois is Asian, with 81.82% below the poverty level.

The race least likely to be in poverty in Piatt County, Illinois is Hispanic, with 2.70% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.67%. Among those working part-time, it was 10.16%, and for those that did not work, the poverty rate was 7.95%.

Piatt County, Illinois Poverty

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Name Poverty
Less Than 9th Grade14.60%
High School5.80%
Some College4.65%
Bachelors or Greater1.61%

Piatt County, Illinois Poverty Rate by Education

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Rate Poverty
Male Unemployed37.71%
Female Unemployed29.71%
Male Employed3.00%
Female Employed2.62%

Piatt County, Illinois Poverty Rate by Employment Status and Sex

Piatt County, Illinois Income by Household Type

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Name Median Mean
Households$70,849$81,088
Families$82,691$93,174
Married Families$86,284-
Non Families$35,275$47,602
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Income by Household Type

Piatt County, Illinois Marital Status

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Marriage Rates

60.4%

Overall Marriage Rate

59.9%

Male Marriage Rate

60.8%

Female Marriage Rate

Piatt County, Illinois Married by Age and Sex

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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

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Piatt County, Illinois Marital Status

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1,063

Number of Veterans

1,031

Male Veterans

32

Female Veterans

War Veterans
Vietnam367
First Gulf War211
Second Gulf War188
Korea153
World War II24

Piatt County, Illinois Veterans by War

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Age Group Veterans
75+323
65 to 74267
35 to 54247
18 to 34115
55 to 64111

Piatt County, Illinois Veterans by Age

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Name Veterans % of Total
White1,0438.40%
2+ Races2014.60%
Hispanic10.69%

Piatt County, Illinois Veterans by Race

Piatt County, Illinois Veterans by Education

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1.98%

Veteran Poverty Rate

29.35%

Veteran Disability Rate

Piatt County, Illinois Veterans by Education

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65.9%

Labor Force Participation

62.7%

Employment Rate

4.7%

Unemployment Rate

Piatt County, Illinois Employment by Age

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Piatt County, Illinois Employment by Race

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Piatt County, Illinois Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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82.70%

Born in Piatt County, Illinois

98.71%

Native Born

1.29%

Foreign Born

0.70%

Non Citizen

0.59%

Naturalized

Place of Birth

98.71% of Piatt County, Illinois residents were born in the United States, with 82.70% having been born in Illinois. 0.70% 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

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources