Flat Rock, IL 62427 ZIP Code Profile

Related Place Profiles:
Flat Rock, IL | Heathsville, IL

ZIP Code 62427: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Flat Rock, IL 62427

Acceptable Alternative
Birds, IL 62427

Not Acceptable, USPS
Heathsville, IL 62427

  • ZIP Code Type: STANDARD
  • County: Crawford County
  • Centroid: Latitude 38.901, Longitude -87.672
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 62427 has segments in 2 Counties (Crawford, Lawrence).

  • Businesses Addresses: 28
  • PO Box Addresses: 119
  • Residential Addresses: 589
    • Multi-Family Addresses: 0
    • Single Family Addresses: 589

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

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62427 ZIP Code Map

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Flat Rock, IL 62427 Data & Demographics (As of July 1, 2017)


Total Population 1,990
Daytime Population: Workers 134
Daytime Population: Residents 1,125
Total Daytime Population (TDP) 1,259
Ratio TDP/Total Population1 0.63
Population in Households 1,990
Population in Familes 1,671
Population in Group Qrtrs 0
Population Density2 19
Diversity Index3 8


Median Household Income $54,284
Average Household Income $65,782
Per Capita Income $27,635


Total Housing Units 968 (100%)
Owner Occupied HU 732 (75.6%)
Renter Occupied HU 104 (10.7%)
Vacant Housing Units 132 (13.6%)
Median Home Value $83,710
Average Home Value $122,746


Total Households 836
Average Household Size 2.38
Family Households 588
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -0.59% -0.62%
Households -0.42% -0.53%
Families -0.57% -0.65%
Median Household Income   1.62%
Per Capita Income   2.65%

Flat Rock, IL 62427 - Peer Comparisons by Rank and Percentile

The table below compares 62427 to the other 1,377 ZIP Codes in Illinois by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 687 50th
Population Density # 1122 19th
Diversity Index # 1002 27th
Median Household Income # 690 50th
Per Capita Income # 687 50th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

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