Census place · GEOID 1730705 · Lee County
Grand Detour, IL ZIP codes
1 ZIP/ZCTA intersecting this Census place (CDP) in Lee County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Grand Detour (GEOID 1730705). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 22,690 (1 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Grand Detour, IL

ZIP/ZCTA overlap with Grand Detour
Population overlap
Share of each ZIP/ZCTA’s population located within Grand Detour, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- 610211.8%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Grand Detour
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 61021 | Dixon | Lee County | 22,690 | $65,719 |