Foster, Illinois Population 2024

3,841

Foster is a city located in Illinois. Foster has a 2024 population of 3,841. Foster is currently declining at a rate of -0.34% annually and its population has decreased by -1.18% since the most recent census, which recorded a population of 3,887 in 2020.

The average household income in Foster is $105,149 with a poverty rate of 7.78%. The median age in Foster is 54.5 years: 55.1 years for males, and 52.7 years for females.

Foster Demographics

According to the most recent ACS, the racial composition of Foster was:

  • White: 95.75%
  • Two or more races: 1.88%
  • Black or African American: 1.44%
  • Asian: 0.82%
  • Native American: 0.1%
  • Native Hawaiian or Pacific Islander: 0%
  • Other race: 0%
Land Area (mi²)
30.4 sq mi
Density (mi²)
126.50/sq mi
Growth Since 2020
-1.18% (-46)
The current population of Foster, Illinois is 3,841 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 3,887.

Population by Race

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Race
Population
Percentage (of total)
White3,71995.75%
Two or more races731.88%
Black or African American561.44%
Asian320.82%
Native American40.1%
Native Hawaiian or Pacific Islander00%
Other race00%

White

Two or more races

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Other race

Foster Population by Race

Foster Population Pyramid 2024

Foster Median Age

54.5

Total

55.1

Male

52.7

Female

Foster Adults

There are 3,202 adults, (966 of whom are seniors) in Foster.

Foster Age Dependency

73.7

Age Dependency Ratio

43.2

Old Age Dependency Ratio

30.5

Child Dependency Ratio

Foster Sex Ratio

Female1,86347.97%
Male2,02152.03%

Foster Population by Age

Foster Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1,6182.491.38.7
Married1,0502.6792.57.5
Non Family3731.2993.86.2
Female1212.8368.631.4
Male743.471000

2.7

Average Family Size

2.4

Average Household Size

91.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Foster Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade1073.51%
Associates Degree3029.91%
Bachelors Degree68822.57%
Graduate Degree2618.56%
High School Graduate86428.35%
Less Than 9th Grade541.77%
Some College77225.33%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Foster Educational Attainment by Sex (over 25)

Foster Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White2,9572,796910
Asian323232
2+ Races32322
Black27275
Hispanic14140

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

The highest rate of bachelors degrees is among asian people with a rate of 100%.

Foster Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$65,859$120,588$48,750
Graduate Degree$55,268$0$55,357
High School Graduate$51,711$61,458$39,167
Less Than 9th Grade$24,435$0$0
Overall$56,724$67,371$44,044
Some College$63,378$69,861$51,542

$56,724

Average Earnings

$67,371

Average Male

$44,044

Average Female

Foster Earnings by Educational Attainment

Foster Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Foster Language

99.47% of Foster residents speak only English, while 0.53% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.53% of the population.

Foster Language

Foster Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White3,6912637.13%
Black563766.07%

7.78%

Overall Poverty Rate

6.28%

Male Poverty Rate

9.41%

Female Poverty Rate

Poverty in Foster

The race most likely to be in poverty in Foster is Black, with 66.07% below the poverty level.

The race least likely to be in poverty in Foster is White, with 7.13% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 7.8%, and for those that did not work, the poverty rate was 11.23%.

Foster Poverty

rate

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Rate
Poverty
High School11.69%
Bachelors or Greater6.22%
Some College3.45%
Less Than 9th Grade0%

Foster Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed42.96%
Male Unemployed40.54%
Female Employed2.1%
Male Employed0%

Foster Poverty Rate by Employment Status and Sex

Foster Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$112,337$119,119
Households$91,154$105,149
Married Families$130,324$-999,999,999
Non Families$51,806$56,471

mean

median

Income by Household Type

Foster Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

66.3%

Overall Marriage Rate

65.3%

Male Marriage Rate

67.4%

Female Marriage Rate

Foster Married by Age and Sex

male

female

Foster Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 55-64.

Foster Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Foster Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

324

Number of Veterans

324

Male Veterans

0

Female Veterans

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War
Veterans
Vietnam155
Second Gulf War39
First Gulf War23
Korea19
World War II0

Foster Veterans by War

count

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Age Group
Veterans
75+111
65 to 7498
35 to 5464
55 to 6451
18 to 340

Foster Veterans by Age

count

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Name
Veterans
% of Total
White30810.03%
Black1451.85%
2+ Races22.78%

Foster Veterans by Race

Foster Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

33.95%

Veteran Disability Rate

Foster Veterans by Education

LaborForceParticipation

60.1%

Labor Force Participation

53.7%

Employment Rate

10.6%

Unemployment Rate

Foster Employment by Age

LaborForceParticipation

Foster Employment by Race

LaborForceParticipation

Foster 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

78.89%

Born in Foster

99.3%

Native Born

0.7%

Foreign Born

0.36%

Non Citizen

0.33%

Naturalized

Place of Birth

99.3% of Foster residents were born in the United States, with 78.89% having been born in Illinois. 0.36% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Foster Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20293,776-13-0.34%
20283,789-13-0.34%
20273,802-13-0.34%
20263,815-13-0.34%
20253,828-13-0.34%
20243,841-13-0.34%
20233,854-13-0.34%
20223,867-13-0.34%
20213,880-7-0.18%
20203,887-34-0.87%
20193,921-9-0.23%
20183,930-7-0.18%
20173,93730.08%
20163,93430.08%
20153,931-4-0.1%
20143,935-8-0.2%
20133,943-14-0.35%
20123,957-13-0.33%
20113,970-10-0.25%
20103,98000%

Foster Population by Year