PlainZIP

Flat Rock, IL · standard

ZIP Code 62427

Crawford County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,702
7/sq mi
$81,250
Median income
$160,700
Median home value
8.6%
Bachelor's or higher

The verdict

Flat Rock pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.

Top 36%
household income, US ZIPs
30th pct
home value, US ZIPs
7
people per sq mi
94%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 62427 against every reporting US ZIP.

ZIP code 62427 covers 230.0 square miles in Flat Rock, Crawford County, Illinois (a standard USPS delivery area), with a modest 1,702 residents on file, a density of 7 people per square mile, in the Chicago time zone.

ZIP 62427 lands in the middle-income range, with a median household income of $81,250 (1% above the Illinois average), while per-capita income is $39,000. The poverty rate stands at 6.1% and the unemployment rate at 0.3%. Housing costs here run $160,700 for a typical home value (16% below the state average), with rent averaging - a month; 94.3% of homes are owner-occupied.

Formal educational attainment runs low here: just 8.6% of adults hold a bachelor's degree or higher, the median age is 43.8, and the average commute is 34 minutes. A geography-based comparison follows: 3 ZIP codes within about 10 miles of 62427, plus 6 more within Crawford County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 62427

Top 5 sectors by establishment count in Flat Rock, IL

Which industries have the most business establishments in ZIP 62427.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 62427, Flat Rock, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

1,702

Population

230.0

Area (sq mi)

7

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 62427?

43.8

Median Age

41.4%

Male

58.6%

Female

0.1%

Foreign-Born

White 97.0%
African American 0.0%
Asian 0.6%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.4%
Hispanic or Latino 0.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$81,250

Median Household Income

+1% vs state

$39,000

Per Capita Income

6.1%

Poverty Rate

0.3%

Unemployment Rate

33.9 min

Mean Commute Time

How ZIP 62427 ranks nationally

Flat Rock, IL household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$81,250 Top 36% higher than 64% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 42.6%
Bachelor's Degree or Higher 8.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

797

Total Housing Units

751

Occupied Units

46

Vacant Units

2.30

Avg Household Size

Occupancy Type

Owner 94.3%
Renter 5.7%

$160,700

Median Home Value

-16% vs state

1976

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 21 business establishments in ZIP 62427, employing approximately 88 people with a combined annual payroll of $3,560,000.

21

Businesses

88

Employees

$3.6M

Annual Payroll

3

Industry Sectors

Industry Establishments % of Total
Mining, quarrying, and oil and gas extraction 5 23.8%
Other services (except public administration) 5 23.8%
Manufacturing 3 14.3%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 62427 vs 62439 →

ZIP 62427 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 62427 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 62427 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 62427 ranks the highest of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
62439 Lawrenceville, IL 7,536 8.8 mi
62451 Palestine, IL 2,156 8.8 mi
62454 Robinson, IL 11,467 10.2 mi

More ZIP Codes in Crawford County

62454 standard
Robinson, IL
Pop: 11,467
62449 standard
Oblong, IL
Pop: 3,175
62451 standard
Palestine, IL
Pop: 2,156
62433 standard
Hutsonville, IL
Pop: 998
62413 standard
Annapolis, IL
Pop: 421
62478 standard
West York, IL
Pop: 398

Related Areas

Crawford County Flat Rock, IL Illinois

Frequently Asked Questions

What county is ZIP code 62427 in? ▼
ZIP code 62427 (Flat Rock) is located in Crawford County, Illinois. Crawford County contains multiple ZIP codes, see the full list at /counties/crawford-il.
What is the population of ZIP code 62427? ▼
ZIP code 62427 in Flat Rock, IL has a population of 1,702 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 62427? ▼
The median household income in ZIP 62427 is $81,250, which is 7% above the national average of $76,288.
What is the average home value in ZIP 62427? ▼
The median home value in ZIP 62427 is $160,700, which is 42% below the national average of $278,155.
What is the demographic makeup of ZIP 62427? ▼
The largest racial group in ZIP 62427 is White at 97.0%.
How many businesses are in ZIP code 62427? ▼
ZIP code 62427 has 21 business establishments employing approximately 88 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 62427? ▼
The top industries by establishment count in ZIP 62427 are: Mining, quarrying, and oil and gas extraction (5), Other services (except public administration) (5), Manufacturing (3). There are 3 industry sectors represented in total.
What is the education level in ZIP code 62427? ▼
In ZIP code 62427, 42.6% of residents aged 25+ have a high school diploma or higher, and 8.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 62427? ▼
The mean commute time for workers in ZIP code 62427 is 33.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 62427? ▼
In ZIP code 62427, approximately 94.3% of occupied housing units are owner-occupied and 5.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 62427? ▼
The poverty rate in ZIP code 62427 is 6.1% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.