DeKalb County, Illinois ZIP Codes
- ZIP records
13 - Cities represented
13 - Sum of listed ZIP population estimates
105,547
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 60115 | Dekalb | 42,536 |
| 2 | 60178 | Sycamore | 22,224 |
| 3 | 60548 | Sandwich | 11,721 |
| 4 | 60135 | Genoa | 7,274 |
| 5 | 60112 | Cortland | 4,621 |
| 6 | 60552 | Somonauk | 4,285 |
| 7 | 60520 | Hinckley | 2,979 |
| 8 | 60145 | Kingston | 2,464 |
| 9 | 60146 | Kirkland | 2,369 |
| 10 | 60556 | Waterman | 2,138 |
Cities in DeKalb County
ZIP Directory
- ZIP 60111
- ZIP 60112
- ZIP 60115
- ZIP 60135
- ZIP 60145
- ZIP 60146
- ZIP 60150
- ZIP 60178
- ZIP 60520
- ZIP 60548
- ZIP 60550
- ZIP 60552
- ZIP 60556
Browse all ZIP data for Illinois
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.