Flat Rock Flag

Flat Rock

County:
Crawford County
County Seat:
No
Area (mi²):
0.856
State:
Illinois

Flat Rock is a village located in Crawford County, Illinois. Flat Rock has a 2026 population of 316. Flat Rock is currently declining at a rate of -0.32% annually and its population has decreased by -2.47% since the most recent census, which recorded a population of 324 in 2020.

The median household income in Flat Rock is $51,667 with a poverty rate of 11.94%. The median age in Flat Rock is 41.5 years: 43.5 years for males, and 40.7 years for females. For every 100 females there are 93.7 males.

316
Total Population
369
Density (mi²)
-1 -0.32%
Growth

Flat Rock Population

Flat Rock Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026316-1-0.32%
2025317-2-0.63%
202431900%
2023319-3-0.93%
2022322-3-0.92%
202132510.31%
202032400%
2019307-5-1.6%
2018312-3-0.95%
201731500%
2016315-5-1.56%
201532000%
2014320-3-0.93%
2013323-3-0.92%
2012326-4-1.21%
2011330-1-0.3%
201033100%

Median Age

Overall: 41.5 years
Female: 40.7 years
Male: 43.5 years

Flat Rock Adults

There are 278 adults, (72 of whom are seniors) in Flat Rock.

Sex Ratio

Female: 174 (51.6%)
Male: 163 (48.4%)

Demographics

The racial composition of Flat Rock includes 95.25% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White32195.25%
Two or more races164.75%
Race
Population ↓
Percentage (of total)
White32195.25%
Two or more races164.75%

Flat Rock Marital Status

Economics and Income Statistics

Flat Rock 's average per capita income is $47,647. Household income levels show a median of $51,667. The poverty rate stands at 11.94%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Families$70,500$75,892
Married Families$68,750-
Households$51,667$68,847
Non Families$47,941$46,145

$47,647

Average Income

$51,667

Median Household Income

11.94%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)