Flat Rock, Illinois Population 2022

321
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Flat Rock is a city located in Crawford County Illinois. With a 2020 population of 321, it is the 1031st largest city in Illinois and the 21673rd largest city in the United States. Flat Rock is currently declining at a rate of -0.31% annually and its population has decreased by -0.62% since the most recent census, which recorded a population of 323 in 2020. Spanning over 1 miles, Flat Rock has a population density of 375 people per square mile.

The average household income in Flat Rock is $47,860 with a poverty rate of 15.73%. The median rental costs in recent years comes to $705 per month, and the median house value is $51,300. The median age in Flat Rock is 42 years, 42.5 years for males, and 40.4 years for females.

Flat Rock Demographics

According to the most recent ACS, the racial composition of Flat Rockwas:

  • White: 98.92%
  • Two or more races: 1.08%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Flat Rock, Illinois is 321 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 323.

Flat Rock, Illinois Population 2022

Population by Race

Race Population Percentage
White45998.92%
Two or More Races51.08%
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Flat Rock Population by Race

Flat Rock Population Pyramid 2022

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Flat Rock Median Age

34.7


Total

34.8


Male

34.3


Female

Flat Rock Adults

There are 369 adults, (74 of whom are seniors) in Flat Rock.

Flat Rock Age Dependency

Age Dependency Ratio

25.1

Old Age Dependency Ratio

32.2

Child Dependency Ratio

Flat Rock Sex Ratio

Female

260

56.03%

Male

204

43.97%

Flat Rock Population by Age

Flat Rock Renter vs Owner Occupied by Household Type

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Flat Rock Household Types

Type Owner Renter
Male100%0%
Non Family97.2%2.8%
All88.2%11.8%
Married84.6%15.4%
Female69.2%30.8%

88.2%

Rate of Home Ownership

Flat Rock Households and Families

Type Count Average Size Owned
All2042.2788.2
Married117384.6
Male33.67100
Female132.3169.2
Non Family711.0197.2

2.86

Average Family Size

2.27

Average Household Size

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Flat Rock Households by Type

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Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade3110.16%
High School Graduate9531.15%
Some College7825.57%
Associates Degree6822.30%
Bachelors Degree289.18%
Graduate Degree51.64%
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Flat Rock Educational Attainment by Sex (over 25)

Flat Rock Educational Attainment by Race

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The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 10.93%.

Flat Rock Educational Attainment by Race

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Name Average Male Female
Overall$33,958$42,813$23,516
Less Than 9th Grade$43,472$$
High School Graduate$44,500$48,750$
Some College$29,250$42,039$22,969
Bachelors Degree$36,667$$36,250
Graduate Degree$$$

$33,958

Average Earnings

$42,813

Average Male

$23,516

Average Female

Flat Rock Earnings by Educational Attainment

Flat Rock Language by Age

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Flat Rock Language

98.62% of Flat Rock residents speak only English, while 1.38% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.92% of the population.

Flat Rock Language

Flat Rock Poverty by Race

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Name Total In Poverty Poverty Rate
White4597115.47%
OtherNaN%
Multiple5240.00%

15.73%

Overall Poverty Rate

18.63%

Male Poverty Rate

13.46%

Female Poverty Rate

Poverty in Flat Rock

The race most likely to be in poverty in Flat Rock is White, with 15.47% below the poverty level.

The race least likely to be in poverty in Flat Rock is Multiple, with 40.00% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.62%. Among those working part-time, it was 30.34%, and for those that did not work, the poverty rate was 19.44%.

Flat Rock Poverty

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Name Poverty
Less Than 9th Grade16.13%
High School7.37%
Some College8.22%
Bachelors or Greater6.06%

Flat Rock Poverty Rate by Education

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Rate Poverty
Male Employed15.60%
Male Unemployed100.00%
Female Employed3.13%
Female Unemployed33.33%

Flat Rock Poverty Rate by Employment Status and Sex

Flat Rock Income by Household Type

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Name Median Mean
Households$41,071$48,312
Families$45,156$49,770
Married Families$46,719-
Non Families$39,375$45,292
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Income by Household Type

Flat Rock Marital Status

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Marriage Rates

69.7%

Overall Marriage Rate

71.5%

Male Marriage Rate

68.2%

Female Marriage Rate

Flat Rock Married by Age and Sex

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Flat Rock 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 35-44.

Flat Rock Marital Status by Race

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Flat Rock Marital Status

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23

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War2
First Gulf War4
Vietnam12
Korea
World War II

Flat Rock Veterans by War

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Age Group Veterans
18 to 34
35 to 546
55 to 642
65 to 7413
75+2

Flat Rock Veterans by Age

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Name Veterans % of Total
White215.74%
2+ Races266.67%

Flat Rock Veterans by Race

Flat Rock Veterans by Education

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26.09%

Veteran Poverty Rate

65.22%

Veteran Disability Rate

Flat Rock Veterans by Education

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60.9%

Labor Force Participation

55.3%

Employment Rate

9.3%

Unemployment Rate

Flat Rock Employment by Age

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Flat Rock Employment by Race

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Flat Rock 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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68.53%

Born in Flat Rock

100.00%

Native Born

0.00%

Foreign Born

0.00%

Non Citizen

0.00%

Naturalized

Place of Birth

100.00% of Flat Rock residents were born in the United States, with 68.53% having been born in Illinois. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Flat Rock Place of Birth

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
20103310.00%
2011330-1-0.30%
2012329-1-0.30%
2013328-1-0.30%
2014327-1-0.30%
2015326-1-0.31%
2016325-1-0.31%
2017324-1-0.31%
2018323-1-0.31%
2019322-1-0.31%
202032310.31%
2021322-1-0.31%
2022321-1-0.31%

Flat Rock Population by Year