Flat Rock, Illinois Population 2021

297
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Flat Rock is a city located in Crawford County Illinois. With a 2020 population of 297, it is the 1021st largest city in Illinois and the 15349th largest city in the United States . Flat Rock is currently declining at a rate of -1.66% annually and its population has decreased by -10.27% since the most recent census, which recorded a population of 331 in 2010. Flat Rock reached it's highest population of in . Spanning over 1 miles, Flat Rock has a population density of 347 people per square mile.

The average household income in Flat Rock is $47,860 with a poverty rate of 20.11%. The median rental costs in recent years comes to $688 per month, and the median house value is $55,300. 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: 98.94%
  • Two or more races: 1.06%
  • 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 297 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 307.The last official US Census in 2010 recorded the population at 331.

Flat Rock, Illinois Population 2021

Population by Race

Race Population Percentage
White37498.94%
Two or More Races41.06%
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Flat Rock Population by Race

Flat Rock Population Pyramid $2021

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Flat Rock Median Age

42


Total

42.5


Male

40.4


Female

Flat Rock Adults

There are 291 adults, (64 of whom are seniors) in Flat Rock.

Flat Rock Age Dependency

66.5

Age Dependency Ratio

28.2

Old Age Dependency Ratio

38.3

Child Dependency Ratio

Flat Rock Sex Ratio

Female

217

57.41%

Male

161

42.59%

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
Female73.3%26.7%
Married86.2%13.8%
All88.6%11.4%
Non Family95.3%4.7%
Male100%0%

88.6%

Rate of Home Ownership

Flat Rock Households and Families

Type Count Average Size Owned
All1762.1588.6
Married942.8586.2
Non Family64095.3
Female15273.3
Male35.33100

2.7

Average Family Size

2.15

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 Grade218.30%
High School Graduate9537.55%
Some College3614.23%
Associates Degree6525.69%
Bachelors Degree3313.04%
Graduate Degree31.19%
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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 14.34%.

Flat Rock Educational Attainment by Race

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Name Average Male Female
Overall$31,397$40,313$23,750
Less Than 9th Grade$41,250$$
High School Graduate$38,000$41,875$28,125
Some College$26,563$43,750$22,917
Bachelors Degree$31,875$37,500$22,083
Graduate Degree$$$

$31,397

Average Earnings

$40,313

Average Male

$23,750

Average Female

Flat Rock Earnings by Educational Attainment

Flat Rock Language by Age

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Flat Rock Language

97.46% of Flat Rock residents speak only English, while 2.54% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.98% of the population.

Flat Rock Language

Flat Rock Poverty by Race

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Name Total In Poverty Poverty Rate
White3747419.79%
Multiple4250.00%

20.11%

Overall Poverty Rate

21.74%

Male Poverty Rate

18.89%

Female Poverty Rate

Poverty in Flat Rock

The race most likely to be in poverty in Flat Rock is Multiple, with 50.00% below the poverty level.

The race least likely to be in poverty in Flat Rock is White, with 19.79% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.67%. Among those working part-time, it was 43.08%, and for those that did not work, the poverty rate was 23.14%.

Flat Rock Poverty

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Name Poverty
Less Than 9th Grade33.33%
Some College16.83%
High School9.47%
Bachelors or Greater5.56%

Flat Rock Poverty Rate by Education

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Rate Poverty
Male Unemployed84.62%
Female Unemployed37.50%
Male Employed24.00%
Female Employed6.58%

Flat Rock Poverty Rate by Employment Status and Sex

Flat Rock Income by Household Type

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Name Median Mean
Households$35,000$47,860
Families$44,000$49,742
Married Families$46,875-
Non Families$30,625$44,211
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Income by Household Type

Flat Rock Marital Status

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Marriage Rates

65.3%

Overall Marriage Rate

74.4%

Male Marriage Rate

58.3%

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 Over 65, 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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20

Number of Veterans

20

Male Veterans

Female Veterans

War Veterans
Vietnam10
First Gulf War2
Second Gulf War2
World War II
Korea

Flat Rock Veterans by War

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Age Group Veterans
65 to 748
35 to 546
75+3
55 to 643
18 to 34

Flat Rock Veterans by Age

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Name Veterans % of Total
White186.23%
2+ Races2100.00%

Flat Rock Veterans by Race

Flat Rock Veterans by Education

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30.00%

Veteran Poverty Rate

55.00%

Veteran Disability Rate

Flat Rock Veterans by Education

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58.7%

Labor Force Participation

51.5%

Employment Rate

12.2%

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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66.67%

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 66.67% 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: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021297-5-1.66%
2020302-5-1.63%
2019307-5-1.60%
2018312-3-0.95%
2017315-2-0.63%
20163170.00%
2015317-2-0.63%
2014319-2-0.62%
2013321-5-1.53%
2012326-4-1.21%
2011330-1-0.30%
20103310.00%

Flat Rock Population by Year