State
County
Land Area (mi²)
0.9 sq mi
Density (mi²)
347.0/sq mi
2020 Growth Rate
-1.66% (-5)
Growth Since 2010
-10.27% (-34)
Rank in State
Rank in Country
Flat Rock, Illinois Population 2021
297
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
| Race | Population | Percentage |
|---|---|---|
| White | 374 | 98.94% |
| Two or More Races | 4 | 1.06% |
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Flat Rock Population by Race
Flat Rock Population Pyramid $2021
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Flat Rock Population by Age
Flat Rock Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 176 | 2.15 | 88.6 |
| Married | 94 | 2.85 | 86.2 |
| Non Family | 64 | 0 | 95.3 |
| Female | 15 | 2 | 73.3 |
| Male | 3 | 5.33 | 100 |
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 Grade | 0.00% | |
| 9th to 12th Grade | 21 | 8.30% |
| High School Graduate | 95 | 37.55% |
| Some College | 36 | 14.23% |
| Associates Degree | 65 | 25.69% |
| Bachelors Degree | 33 | 13.04% |
| Graduate Degree | 3 | 1.19% |
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Flat Rock Educational Attainment by Sex (over 25)
Flat Rock Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 251 | 230 | 36 |
| 2+ Races | 2 | 2 |
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
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 |
|---|---|---|---|
| White | 374 | 74 | 19.79% |
| Multiple | 4 | 2 | 50.00% |
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
Flat Rock Poverty Rate by Education
Flat Rock Marital Status
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
Flat Rock Marital Status
Flat Rock Veterans by War
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| Name | Veterans | % of Total |
|---|---|---|
| White | 18 | 6.23% |
| 2+ Races | 2 | 100.00% |
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 |
|---|---|---|---|
| 2021 | 297 | -5 | -1.66% |
| 2020 | 302 | -5 | -1.63% |
| 2019 | 307 | -5 | -1.60% |
| 2018 | 312 | -3 | -0.95% |
| 2017 | 315 | -2 | -0.63% |
| 2016 | 317 | 0.00% | |
| 2015 | 317 | -2 | -0.63% |
| 2014 | 319 | -2 | -0.62% |
| 2013 | 321 | -5 | -1.53% |
| 2012 | 326 | -4 | -1.21% |
| 2011 | 330 | -1 | -0.30% |
| 2010 | 331 | 0.00% |