Waterloo, IL ZIP code
The ZIP code for Waterloo, Illinois is 62298. It is in Monroe County.
- Population in these ZIPs
- 18,208
- Avg. median income
- $101,200population-weighted
- Typical home value
- $325,200population-weighted
- Metro area
- St. Louis, MO-IL
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Waterloo, IL ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 62298 | 18,208 | $101,155 | $325,200 |
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 Waterloo
- Maeystown 7 mi
- Fults 8 mi
- Hecker 8 mi
- Valmeyer 9 mi
- Columbia 9 mi
- Smithton 10 mi
- Millstadt 11 mi
- Red Bud 11 mi
- Renault 12 mi
- East Carondelet 13 mi
- New Athens 14 mi
- Prairie Du Rocher 15 mi
Frequently asked questions
What is the ZIP code for Waterloo, IL?
The ZIP code for Waterloo, IL is 62298.
What county is Waterloo, Illinois in?
Waterloo ZIP codes are in Monroe County.