Zip Code 60112 — Cortland, IL
60112 is a ZIP Code associated with Cortland, IL, located within DeKalb. 60112 ranks #5 out of 13 ZIP codes in DeKalb County by population (and #487 out of 1,396 in IL). The area supports an estimated population of 4,621 residents across Data Pending housing units, with a population density of 488.1 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (41.923910, -88.689940)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 60112 |
| Primary City | Cortland |
| State / Province | IL |
| County | DeKalb |
| Total Population | 4,621 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 488.1 people/sq mi |
| Timezone | America/Chicago |
How 60112 Compares
| Metric | ZIP 60112 | DeKalb County | IL State Average |
|---|
| Population | 4,621 | 105,547 (Total) | 12,694,745 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 488.1 /sq mi | -- | -- |
| County Pop Rank | #5 of 13 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →