Flat Rock, IL demographics:
population, income, and more

Total population
337
-6.9% year-over-year change
Median household income
$51,667/yr
3.6% year-over-year change
Housing units
171
1.2% year-over-year change

Flat Rock population

How many people live in Flat Rock

Flat Rock is home to 337 residents, according to the most recent Census data. Gender-wise, 48.4% of Flat Rock locals are male, and 51.6% are female.

Total population
337
-6.9% year-over-year change
Gender ratio
Male
48.4%
163
Female
51.6%
174
Value Percent YoY change
Male 163 48.4% -8.9%
Female 174 51.6% -4.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Flat Rock is 42, with the population distributed as follows: about 16.6% are children under 15, then 13.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 20.8% of the population, while another 27.6% fall into the 45 to 64 bracket. Finally, around 21.4% are 65 or older.

Median age
41.5
Age breakdown
Under 15
16.6%
15 to 24
13.6%
25 to 44
20.8%
45 to 64
27.6%
Over 65
21.4%
Value Percent YoY change
Under 15 56 16.6% -23.3%
15 to 24 46 13.6% 7.0%
25 to 44 70 20.8% -16.7%
45 to 64 93 27.6% -7.0%
Over 65 72 21.4% 16.1%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

There’s also a share of 4.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 337 100% -6.9%
Racial breakdown
White
95.2%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
4.8%
Other
0%
Value Percent
White 321 95.2%
Two or more races 16 4.8%

Households in Flat Rock

A peek inside Flat Rock households

Flat Rock has 146 households, with an average of 2 members in each. Of these, 72.6% are families, while the remaining 27.4% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
146
-1.4% year-over-year change
Average people per household
2
Non-family households
40
Family households
106
Value Percent YoY change
Non-family households 40 27.4% -21.6%
Family households 106 72.6% 9.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Flat Rock

The housing landscape of Flat Rock

Flat Rock's housing consists of 171 units, with 82.5% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 17.5% of the housing landscape.

Housing units
171
1.2% year-over-year change
Housing types
Value Percent
1 unit, detached 141 82.5%
Mobile home 30 17.5%
Homes built since 2020
0
% year-over-year change

The age of buildings in Flat Rock

In Flat Rock, the median construction year is 1954. About 32.2% of homes were built before the 1940s, with another 13.4% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 55 32.2% -14.1%
Built between 1940 and 1949 23 13.4% -17.9%
Built between 1950 and 1959 18 10.5% 20.0%
Built between 1960 and 1969 10 5.8% 42.9%
Built between 1970 and 1979 25 14.6% 212.5%
Built between 1980 and 1989 4 2.3% 100.0%
Built between 1990 and 1999 31 18.1% -11.4%
Built between 2000 and 2009 5 2.9% -50.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Flat Rock occupancy rates

Out of the 146 occupied housing units in Flat Rock, 87.7% are owner-occupied, while 12.3% are lived in by tenants. Meanwhile, 14.6% of all homes on the local market sit vacant.

Occupied housing units
146
-1.4% year-over-year change
Occupancy breakdown
Renter occupied
18
Owner occupied
128
Value Percent YoY
change
Renter occupied 18 12.3% -5.3%
Owner occupied 128 87.7% -0.8%
Unoccupied housing units
14.6%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Flat Rock housing costs

Median housing costs per month
$471/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Flat Rock

Flat Rock education at a glance

About 42.4% of the population in Flat Rock went to high school, while 33.8% pursued college studies. Another 16.2% earned an associate degree and 6.5% hold a bachelor’s. Meanwhile, 0.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 2 0.7% 100.0%
High school diploma 118 42.4% 5.4%
College diploma 94 33.8% -3.1%
Associate degree 45 16.2% 15.4%
Bachelor's degree 18 6.5% -37.9%
Graduate degree 1 0.4% -83.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Flat Rock

How much people earn in Flat Rock

The average annual household income in Flat Rock was $68,847 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +11.6% change from the previous year. At the same time, the median income stood at $51,667, reflecting a +3.6% shift over the same period.

Average household income in Flat Rock
$68,847/year
11.6% year-over-year change
Median household income in Flat Rock
$51,667/year
3.6% year-over-year change

Flat Rock income by age

Overall, 88.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Over 65 $50,625 3.9%
Above poverty level
295
Below poverty level
40
Value Percent YoY
change
Above poverty level 295 88.1% -3.3%
Below poverty level 40 11.9% -23.1%

Employment in Flat Rock

Workforce and job types in Flat Rock

The job market in Flat Rock is powered by 182 working residents, spread across a range of industries and roles. 62.6% of the working population are employed in professional or administrative positions, while 37.4% are in hands-on or service-based jobs. Also, 7.7% run their own businesses, 61.5% are employed by private companies, and 27.5% work in the public sector.

Workforce demographics

Working population
182
4.6% year-over-year change
White collar
114
Blue collar
68
Value Percent YoY change
White collar 114 62.6% 7.5%
Blue collar 68 37.4% 0.0%
Employer type
Self employees
7.7%
Private companies
61.5%
Governmental workers
27.5%
Not for profit companies
3.3%
Value Percent YoY change
Self employees 14 7.7% 7.7%
Private companies 112 61.5% 0.0%
Governmental workers 50 27.5% 31.6%
Not for profit companies 6 3.3% -45.5%
Unemployment rate
1.1%
-83.3% year-over-year change

Available workforce

The unemployment rate in Flat Rock stands at 1.1%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Flat Rock

How people get around in Flat Rock

Commuting methods vary: 92.9% of residents travel by personal vehicle and 0.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 169 92.9% 5.0%
Motorcycle 2 1.1% 100.0%
Walk 1 0.6% -50.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Flat Rock by zipcode?

Zipcode Population Number of households Median income Average income
62427 1,730 751 $81,250 $94,228

Explore more communities

FAQs about Flat Rock demographics 

What is the total population of Flat Rock?

Flat Rock has a total population of 337 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -6.9% compared to a year ago.

What is the gender ratio in Flat Rock?

The gender ratio in Flat Rock is as follows:
  • 48.4% males (163 residents)
  • 51.6% females (174 residents)

What is the median age in Flat Rock?

The median age in Flat Rock is 41.5.

What is the age distribution of the population in Flat Rock?

The age distribution in Flat Rock is as follows:
  • Under 15: 16.6% (56 residents)
  • Ages 15-24: 13.6% (46 residents)
  • Ages 25-44: 20.8% (70 residents)
  • Ages 45-64: 27.6% (93 residents)
  • Over 65: 21.4% (72 residents)

What is the racial and ethnic makeup of Flat Rock?

The racial and ethnic makeup of Flat Rock is as follows:
  • White: 95.2% (321 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 4.8% (16 residents)
  • Other: 0% (0 residents)

What percentage of the population in Flat Rock are U.S.-born citizens?

U.S.-born citizens represent 100% of the population in Flat Rock.

How many housing units are there in Flat Rock?

There are 171 housing units in Flat Rock, reflecting a +1.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Flat Rock and what is the average household size?

Flat Rock has a total of 146 households, with an average of 2 people in each.

What is the median household income in Flat Rock?

Flat Rock has a median household income of $51,667, representing a +3.6% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Flat Rock?

The employment rate is 98.9% in Flat Rock, with a workforce of 182 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 62.6% (114 residents)
  • Blue-collar workers: 37.4% (68 residents)

Places of employment:
  • Self-employed: 7.7% (14 residents)
  • Private companies: 61.5% (112 residents)
  • Governmental workers: 27.5% (50 residents)
  • Not-for-profit companies: 3.3% (6 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025