Flat Rock ZIP Codes — Crawford County, IL

There is one unique ZIP code in Flat Rock, Illinois and it is 62427. Area code: 618.

ZIP codes

84.22

sq mi land

0.34

sq mi water

618

area code

Flat Rock, IL ZIP code map

About Flat Rock, IL

Flat Rock is a small and charming village located in Crawford County, Illinois. Known for its rural setting, this quaint community offers a relaxing atmosphere and a close-knit vibe. With a single ZIP code (62427), Flat Rock epitomizes the quintessential small-town lifestyle that many seek.

Location & geography

Geographically, Flat Rock is situated in the southeastern part of Illinois, surrounded by the lush landscapes of Crawford County. It is conveniently located near other towns, with Oblong just 8 miles to the northwest, Robinson 12 miles to the southwest, and Palestine about 15 miles to the north. The village itself spans an area of 84.22 square miles of land, complemented by a small water area of 0.34 square miles.

Community & economy

The community of Flat Rock is characterized by its friendly residents and serene environment, making it an ideal place for those seeking a quieter lifestyle. Agriculture plays a significant role in the local economy, alongside small businesses that provide essential services to the community. Daily life in Flat Rock often revolves around community events and local gatherings, fostering strong connections among its inhabitants.

Transportation

Flat Rock is accessible via key highways such as Illinois Route 1, which runs just to the west of the village, connecting it to nearby cities. The nearest major airport is Vincennes Municipal Airport, located approximately 30 miles to the east, offering regional flights. Public transit options may be limited, as most residents rely on personal vehicles for transportation.

History

Flat Rock was founded in the 19th century, with its development closely tied to agriculture and local commerce. Throughout its history, the village has remained a small but significant part of Crawford County, hosting various agricultural fairs and community events. Notable events in its past have shaped its character, making it a quaint and historical part of Illinois.

Did you know?

One surprising fact about Flat Rock is that it encompasses a land area larger than many might expect, providing ample space for outdoor activities and agriculture. Additionally, while it may be a small village, Flat Rock boasts a rich history that reflects the broader narrative of rural communities in Illinois.

ZIP codes for Flat Rock, IL (1)

ZIP code	City	County	Map
62427	Flat Rock	Crawford	View map

Demographics & statistics

1,948

Population

38.2

Median age

$66,536

Median household income

$28,962

Per capita income

$88,400

Median home value

$532

Median monthly rent

92.7%

Home ownership

19.4%

Poverty rate

12.4%

Unemployment

704

Housing units

10.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

118

5–9

146

10–14

15–19

20–24

116

25–34

142

127

35–44

155

45–54

55–59

60–64

65–74

104

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	516	26.5%
18 and over	1,432	73.5%
65 and over	384	19.7%
Median age	38.2 years

Race & ethnicity

White 99.4%

Two or more races 0.5%

American Indian / Alaska Native 0.1%

Group	Count	%
White	1,937	99.4%
Two or more races	10	0.5%
American Indian / Alaska Native	1	0.1%

Household income

Under $10k 7.1%

$10k–$15k 5.1%

$15k–$25k 8.1%

$25k–$35k 10.5%

$35k–$50k 8.9%

$50k–$75k 15.7%

$75k–$100k 8.8%

$100k–$150k 20.8%

$150k–$200k 13.4%

$200k+ 1.6%

Range	% of households
Under $10k	7.1%
$10k–$15k	5.1%
$15k–$25k	8.1%
$25k–$35k	10.5%
$35k–$50k	8.9%
$50k–$75k	15.7%
$75k–$100k	8.8%
$100k–$150k	20.8%
$150k–$200k	13.4%
$200k+	1.6%
Median income	$66,536

Housing

Home values

Under $50k 26.3%

$50k–$100k 27.7%

$100k–$150k 7.2%

$150k–$200k 6.3%

$200k–$300k 26.7%

$300k–$500k 4.6%

$500k–$1M 1.2%

Housing overview

Metric	Value
Median home value	$88,400
Median rent / month	$532
Owner occupied	92.7%
Renter occupied	7.3%
Vacant	3.4%
Single-family detached	82.3%
Large apartment buildings	0.0%
Mobile homes	17.7%
Median rooms	6.4
Avg household size (owned)	2.70

Year built

Era	%
2020 or later	0.0%
2010–2019	5.4%
2000–2009	8.1%
1990–1999	20.2%
1980–1989	7.5%
1970–1979	17.0%
1960–1969	3.7%
1950–1959	3.8%
1940–1949	6.7%
1939 or earlier	27.5%

Bedrooms

Size	% of units
No bedroom (studio)	2.8%
1 bedroom	4.0%
2 bedrooms	25.5%
3 bedrooms	46.4%
4 bedrooms	12.2%
5+ bedrooms	9.2%

Vehicles per household

Vehicles	% of households
No vehicle	5.6%
1 vehicle	18.5%
2 vehicles	34.9%
3 or more	41.0%

Heating fuel

Fuel type	%
Utility gas	31.5%
Electricity	14.9%
Propane / LP gas	46.4%
Wood	6.0%

Households & families

Household type	Count	%
Married-couple family	456	62.4%
Cohabiting couple	9	1.2%
Male householder, no spouse	106	14.5%
Female householder, no spouse	160	21.9%
Households with children under 18	243	33.2%
Households with seniors (65+)	290	39.7%
Average household size	2.66

Marital status

Status	Male	Female
Never married	27.5%	20.5%
Married	63.8%	65.1%
Separated	1.3%	0.0%
Widowed	3.2%	11.1%
Divorced	4.2%	3.3%

Education

Less than 9th grade 3.7%

Some HS, no diploma 6.4%

HS graduate 32.0%

Some college, no degree 25.4%

Associate's degree 21.7%

Bachelor's degree 8.6%

Graduate / professional 2.1%

Metric	%
HS diploma or higher	89.8%
Bachelor's or higher	10.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	69	15.3%
Kindergarten	66	14.7%
Elementary school	224	49.8%
High school	33	7.3%
College / grad school	58	12.9%

Employment

Industry of employment

Manufacturing 23.8%

Education & healthcare 21.8%

Public administration 12.5%

Agriculture & mining 12.0%

Construction 7.4%

Retail trade 6.8%

Transportation & utilities 4.5%

Professional & management 4.1%

Finance & real estate 2.0%

Arts, food & hospitality 1.8%

Other services 1.8%

Wholesale trade 1.5%

Occupation

Category	%
Management, business & arts	25.7%
Service	14.2%
Sales & office	13.2%
Natural resources & construction	14.9%
Production & transportation	32.0%

Employment type

Type	%
Private sector	69.5%
Government	20.1%
Self-employed	9.7%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	78.0%
Carpool	7.0%
Public transit	2.3%
Walk	4.2%
Other means	6.4%
Avg commute (minutes)	20.7

Poverty

All people 19.4%

Under 18 years 18.7%

18 and over 19.6%

Married-couple families 5.9%

Female-led households 63.6%

Income support

Source	% of households
Social Security	44.2%
Retirement income	32.1%
Supplemental Security	7.5%
Cash public assistance	0.0%
Food stamps / SNAP	12.4%

Health indicators

Condition	%
High blood pressure	33.3%
High cholesterol	33.9%
Heart disease	6.8%
Stroke	3.1%
Asthma	9.6%
Arthritis	27.7%
Kidney disease	2.9%
Pulmonary disease	7.3%
Cancer	7.4%

Behavior / access	%
Binge drinking	15.6%
No physical activity	23.9%
Less than 7 hrs sleep	32.0%
Fair or poor health	13.5%
Poor mental health	12.7%
Poor physical health	9.8%
No health insurance	10.1%
Visited doctor (checkup)	76.7%
Visited dentist	66.5%
Cholesterol screening	90.0%
Teeth loss	13.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	117	8.2%

Disability	%
Any disability	18.4%
Under 18	14.3%
18–64 years	13.7%
65 and over	36.5%

Health insurance coverage

Type	%
Private insurance	64.3%
Public insurance	41.4%
Uninsured under 19	17.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,831	94.0%
Spanish	11	0.6%
Other Indo-European	0	0.0%
Asian & Pacific Islander	11	0.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,940	99.6%
Born in same state	1,940	99.6%
Born in different state	1,133	58.2%
Foreign born	0	0.0%
Naturalized citizen	8	0.4%
Not a US citizen	8	100.0%

Ancestry

Ancestry	Count	%
French	231	11.9%
Arab	219	11.2%
Italian	171	8.8%

Ancestry	Count	%
English	20	1%
Polish	10	0.5%

Technology access

Metric	% of households
Computer access	37.5%
Internet access	87.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Flat Rock, IL have?

Flat Rock, IL has one ZIP code: 62427. Each ZIP code serves a distinct delivery area within the city and surrounding region.