Hamilton County, Illinois Population 2021

Hamilton County, Illinois's estimated population is 8,052 with a growth rate of -0.40% in the past year according to the most recent United States census data. Hamilton County, Illinois is the 90th largest county in Illinois. The 2010 Population was 8,446 and has seen a growth of -4.66% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
20218,052-32-0.40%
20208,084-32-0.39%
20198,116-32-0.39%
20188,148-33-0.40%
20178,181-5-0.06%
20168,186-62-0.75%
20158,248-66-0.79%
20148,314-34-0.41%
20138,348-40-0.48%
20128,388-37-0.44%
20118,425-21-0.25%
20108,446-53-0.62%
19908,499-673-7.34%
19809,1725075.85%
19708,665-1,345-13.44%
196010,010-2,246-18.33%
195012,256-1,198-8.90%
194013,4544593.53%
193012,995-2,925-18.37%
192015,920-2,307-12.66%
191018,227-1,970-9.75%
190020,1972,39713.47%
189017,8001,0886.51%
188016,7123,69828.42%
187013,0143,09931.26%
18609,9153,55355.85%
18506,3622,41761.27%
18403,9451,32950.80%
18302,6160.00%
2021 Growth Rate
-0.40%
County Website
Founded
1821
County Seat
2010 Population
8,446
Growth Since 2010
-4.66%
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Hamilton County, Illinois Population Growth

Population by Race

Race Population Percentage
White8,11499.24%
Black or African American330.40%
Some Other Race170.21%
Asian120.15%
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Hamilton County, Illinois Population by Race

Hamilton County, Illinois Population Pyramid $2021

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Hamilton County, Illinois Median Age

43.6


Total

42.5


Male

45.9


Female

Hamilton County, Illinois Adults

There are 6,364 adults, (1,759 of whom are seniors) in Hamilton County, Illinois.

Hamilton County, Illinois Age Dependency

77.5

Age Dependency Ratio

38.2

Old Age Dependency Ratio

39.3

Child Dependency Ratio

Hamilton County, Illinois Sex Ratio

Female

4,104

50.20%

Male

4,072

49.80%

Hamilton County, Illinois Population by Age

Hamilton County, Illinois Renter vs Owner Occupied by Household Type

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Hamilton County, Illinois Household Types

Type Owner Renter
Married88.6%11.4%
All80%20%
Female77.7%22.3%
Male70%30%
Non Family66.5%33.5%

80.0%

Rate of Home Ownership

Hamilton County, Illinois Households and Families

Type Count Average Size Owned
All3,4002.3780
Married1,8952.9388.6
Non Family1,0361.2166.5
Female3192.577.7
Male1503.0770

2.83

Average Family Size

2.37

Average Household Size

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Hamilton County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade3135.41%
9th to 12th Grade4327.46%
High School Graduate2,02234.92%
Some College1,43024.70%
Associates Degree60610.47%
Bachelors Degree5459.41%
Graduate Degree4427.63%
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Hamilton County, Illinois Educational Attainment by Sex (over 25)

Hamilton County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White5,7124,992981
Hispanic3514
Black3127
Other Race1710
Asian12126

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

The highest rate of bachelors degrees is among asian people with a rate of 50.00%.

Hamilton County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$38,912$47,560$29,832
Less Than 9th Grade$12,969$13,125$
High School Graduate$31,461$52,813$17,353
Some College$43,083$48,065$32,375
Bachelors Degree$35,950$52,083$26,296
Graduate Degree$63,170$68,352$52,434

$38,912

Average Earnings

$47,560

Average Male

$29,832

Average Female

Hamilton County, Illinois Earnings by Educational Attainment

Hamilton County, Illinois Language by Age

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Hamilton County, Illinois Language

98.36% of Hamilton County, Illinois residents speak only English, while 1.64% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.15% of the population.

Hamilton County, Illinois Language

Hamilton County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White7,9917399.25%
Black13861.54%

9.25%

Overall Poverty Rate

7.11%

Male Poverty Rate

11.36%

Female Poverty Rate

Poverty in Hamilton County, Illinois

The race most likely to be in poverty in Hamilton County, Illinois is Black, with 61.54% below the poverty level.

The race least likely to be in poverty in Hamilton County, Illinois is White, with 9.25% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.36%. Among those working part-time, it was 9.22%, and for those that did not work, the poverty rate was 17.10%.

Hamilton County, Illinois Poverty

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Name Poverty
Less Than 9th Grade27.80%
High School8.79%
Some College6.42%
Bachelors or Greater0.20%

Hamilton County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed93.33%
Male Unemployed25.00%
Female Employed3.48%
Male Employed2.31%

Hamilton County, Illinois Poverty Rate by Employment Status and Sex

Hamilton County, Illinois Income by Household Type

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Name Median Mean
Households$54,046$65,965
Families$62,449$78,400
Married Families$68,768-
Non Families$26,731$36,827
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Income by Household Type

Hamilton County, Illinois Marital Status

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Marriage Rates

57.8%

Overall Marriage Rate

57.8%

Male Marriage Rate

57.8%

Female Marriage Rate

Hamilton County, Illinois Married by Age and Sex

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Hamilton County, Illinois Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 35-44.

Hamilton County, Illinois Marital Status by Race

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Hamilton County, Illinois Marital Status

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547

Number of Veterans

539

Male Veterans

8

Female Veterans

War Veterans
Vietnam218
First Gulf War135
Second Gulf War49
Korea22
World War II6

Hamilton County, Illinois Veterans by War

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Age Group Veterans
65 to 74194
35 to 54184
75+103
55 to 6456
18 to 3410

Hamilton County, Illinois Veterans by Age

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Hamilton County, Illinois Veterans by Race

Hamilton County, Illinois Veterans by Education

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1.86%

Veteran Poverty Rate

34.39%

Veteran Disability Rate

Hamilton County, Illinois Veterans by Education

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55.8%

Labor Force Participation

54%

Employment Rate

3%

Unemployment Rate

Hamilton County, Illinois Employment by Age

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Hamilton County, Illinois Employment by Race

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Hamilton 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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81.26%

Born in Hamilton County, Illinois

99.24%

Native Born

0.76%

Foreign Born

0.20%

Non Citizen

0.56%

Naturalized

Place of Birth

99.24% of Hamilton County, Illinois residents were born in the United States, with 81.26% having been born in Illinois. 0.20% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Hamilton 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