County · Illinois · United States
Marshall County ZIP codes
9 ZIP codes · 9 cities · FIPS 17123
Key facts
- State
- Illinois (IL)
- FIPS code
- 17123
- Population
- 11,715
- Median household income
- $69,818
- Median age
- 45.9
- Land area
- 386.8 sq mi (1,001.8 km²)
- Population density
- 30 / sq mi
- Area codes
- 309, 779, 815
Cities and ZIP codes in Marshall County (9)
| City | ZIP codes |
|---|---|
| Camp Grove | 61424 |
| Henry | 61537 |
| La Rose | 61541 |
| Lacon | 61540 |
| Sparland | 61565 |
| Toluca | 61369 |
| Varna | 61375 |
| Washburn | 61570 |
| Wenona | 61377 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.