Illinois City, IL ZIP code
The ZIP code for Illinois City, Illinois is 61259. It is in Rock Island County.
- Population in these ZIPs
- 1,053
- Avg. median income
- $91,500population-weighted
- Typical home value
- $278,700population-weighted
- Metro area
- Davenport-Moline-Rock Island, IA-IL
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Illinois City, IL ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 61259 | 1,053 | $91,458 | $278,700 |
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 Illinois City
- Taylor Ridge 9 mi
- New Boston 10 mi
- Joy 10 mi
- Andalusia 11 mi
- Reynolds 11 mi
- Aledo 16 mi
- Milan 17 mi
- Preemption 19 mi
- Matherville 19 mi
- Keithsburg 20 mi
- Rock Island 20 mi
- Seaton 21 mi
Frequently asked questions
What is the ZIP code for Illinois City, IL?
The ZIP code for Illinois City, IL is 61259.
What county is Illinois City, Illinois in?
Illinois City ZIP codes are in Rock Island County.