Chatham, Illinois Population 2021

13,400
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Chatham is a city located in Sangamon County Illinois. With a 2020 population of 13,400, it is the 176th largest city in Illinois and the 2503rd largest city in the United States . Chatham is currently growing at a rate of 1.48% annually and its population has increased by 16.52% since the most recent census, which recorded a population of 11,500 in 2010. Chatham reached it's highest population of 13,400 in 2021. Spanning over 7 miles, Chatham has a population density of 1,835 people per square mile.

The average household income in Chatham is $102,626 with a poverty rate of 4.08%. The median rental costs in recent years comes to $1,043 per month, and the median house value is $188,900. The median age in Chatham is 35.7 years, 36.5 years for males, and 35.2 years for females.

Chatham Demographics

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

  • White: 95.46%
  • Two or more races: 1.56%
  • Black or African American: 1.44%
  • Asian: 1.32%
  • Native Hawaiian or Pacific Islander: 0.13%
  • Other race: 0.10%
  • Native American: 0.00%
The current population of Chatham, Illinois is 13,400 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 12,812.The last official US Census in 2010 recorded the population at 11,500.

Chatham, Illinois Population 2021

Population by Race

Race Population Percentage
White12,47895.46%
Two or More Races2041.56%
Black or African American1881.44%
Asian1721.32%
Native Hawaiian and Other Pacific Islander170.13%
Some Other Race130.10%
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Chatham Population by Race

Chatham Population Pyramid $2021

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Chatham Median Age

35.7


Total

36.5


Male

35.2


Female

Chatham Adults

There are 9,413 adults, (1,566 of whom are seniors) in Chatham.

Chatham Age Dependency

66.6

Age Dependency Ratio

20

Old Age Dependency Ratio

46.6

Child Dependency Ratio

Chatham Sex Ratio

Female

6,974

53.35%

Male

6,098

46.65%

Chatham Population by Age

Chatham Renter vs Owner Occupied by Household Type

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Chatham Household Types

Type Owner Renter
Married94%6%
All79.3%20.7%
Non Family61.7%38.3%
Female59.2%40.8%
Male44.9%55.1%

79.3%

Rate of Home Ownership

Chatham Households and Families

Type Count Average Size Owned
All4,8492.6979.3
Married2,7973.2394
Non Family1,2771.2361.7
Female5613.2859.2
Male2142.9344.9

3.13

Average Family Size

2.69

Average Household Size

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Chatham Households by Type

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Education Attained Count Percentage
Less Than 9th Grade620.74%
9th to 12th Grade1661.97%
High School Graduate1,35216.04%
Some College1,78921.23%
Associates Degree99411.80%
Bachelors Degree2,67331.72%
Graduate Degree1,39116.51%
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Chatham Educational Attainment by Sex (over 25)

Chatham Educational Attainment by Race

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Race Total High School Bachelors
White7,8717,7053,935
Hispanic19818130
Asian12512580
Black12010622
2+ Races10574
Islander1717
Other Race1313

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 64.00%.

Chatham Educational Attainment by Race

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Name Average Male Female
Overall$52,877$59,938$44,972
Less Than 9th Grade$19,674$$18,750
High School Graduate$35,871$41,220$25,738
Some College$41,460$46,508$38,497
Bachelors Degree$65,595$73,967$55,825
Graduate Degree$76,140$90,440$66,094

$52,877

Average Earnings

$59,938

Average Male

$44,972

Average Female

Chatham Earnings by Educational Attainment

Chatham Language by Age

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Chatham Language

96.14% of Chatham residents speak only English, while 3.86% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.66% of the population.

Chatham Language

Chatham Poverty by Race

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Name Total In Poverty Poverty Rate
White12,1404653.83%
Black1884825.53%
Hispanic269165.95%

4.08%

Overall Poverty Rate

3.47%

Male Poverty Rate

4.62%

Female Poverty Rate

Poverty in Chatham

The race most likely to be in poverty in Chatham is Black, with 25.53% below the poverty level.

The race least likely to be in poverty in Chatham is White, with 3.83% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.06%. Among those working part-time, it was 6.99%, and for those that did not work, the poverty rate was 6.87%.

Chatham Poverty

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Name Poverty
Less Than 9th Grade25.44%
High School9.76%
Some College2.77%
Bachelors or Greater0.27%

Chatham Poverty Rate by Education

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Rate Poverty
Male Unemployed22.73%
Female Unemployed13.10%
Female Employed2.63%
Male Employed1.79%

Chatham Poverty Rate by Employment Status and Sex

Chatham Income by Household Type

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Name Median Mean
Households$88,822$102,626
Families$101,875$114,746
Married Families$113,905-
Non Families$53,005$62,069
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Income by Household Type

Chatham Marital Status

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Marriage Rates

57.1%

Overall Marriage Rate

60.8%

Male Marriage Rate

53.9%

Female Marriage Rate

Chatham Married by Age and Sex

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Chatham 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 45-54.

Chatham Marital Status by Race

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Chatham Marital Status

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710

Number of Veterans

670

Male Veterans

40

Female Veterans

War Veterans
Vietnam276
Second Gulf War224
First Gulf War202
Korea23
World War II15

Chatham Veterans by War

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Age Group Veterans
35 to 54228
75+150
65 to 74149
55 to 64116
18 to 3467

Chatham Veterans by Age

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Name Veterans % of Total
White6837.58%
2+ Races1411.02%
Black1310.32%
Hispanic73.54%

Chatham Veterans by Race

Chatham Veterans by Education

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3.38%

Veteran Poverty Rate

33.10%

Veteran Disability Rate

Chatham Veterans by Education

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71.5%

Labor Force Participation

70.2%

Employment Rate

1.8%

Unemployment Rate

Chatham Employment by Age

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Chatham Employment by Race

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Chatham 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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78.66%

Born in Chatham

97.16%

Native Born

2.84%

Foreign Born

0.64%

Non Citizen

2.20%

Naturalized

Place of Birth

97.16% of Chatham residents were born in the United States, with 78.66% having been born in Illinois. 0.64% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Chatham Place of Birth

Year Population Growth Annual Growth Rate
202113,4001961.48%
202013,2041961.51%
201913,0081961.53%
201812,812370.29%
201712,7751881.49%
201612,5871220.98%
201512,4651251.01%
201412,3401521.25%
201312,1881120.93%
201212,0761201.00%
201111,9561751.49%
201011,7813,1983.22%
20008,5832,5093.52%
19906,0744770.82%
19805,5972,8097.22%
19702,7880.00%

Chatham Population by Year