Flat Rock, IL ZIP code
The ZIP code for Flat Rock, Illinois is 62427. It is in Crawford County.
- Population in these ZIPs
- 1,730
- Avg. median income
- $81,300population-weighted
- Typical home value
- $167,800population-weighted
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Flat Rock, IL ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 62427 | 1,730 | $81,250 | $167,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Flat Rock
- Palestine 7 mi
- Lawrenceville 9 mi
- Robinson 10 mi
- Stoy 13 mi
- Bridgeport 13 mi
- Sumner 15 mi
- Hutsonville 17 mi
- Oblong 17 mi
- Claremont 18 mi
- Saint Francisville 19 mi
- Willow Hill 21 mi
- Sainte Marie 21 mi
Frequently asked questions
What is the ZIP code for Flat Rock, IL?
The ZIP code for Flat Rock, IL is 62427.
What county is Flat Rock, Illinois in?
Flat Rock ZIP codes are in Crawford County.