Knox County, Illinois ZIP Codes
- ZIP records
17 - Cities represented
16 - Sum of listed ZIP population estimates
49,261
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 | 61401 | Galesburg | 30,580 |
| 2 | 61448 | Knoxville | 3,947 |
| 3 | 61410 | Abingdon | 3,838 |
| 4 | 61402 | Galesburg | 1,623 |
| 5 | 61428 | Dahinda | 1,278 |
| 6 | 61467 | Oneida | 1,159 |
| 7 | 61488 | Wataga | 1,084 |
| 8 | 61489 | Williamsfield | 820 |
| 9 | 61436 | Gilson | 745 |
| 10 | 61572 | Yates City | 732 |
Cities in Knox County
- Abingdon
- Altona
- Dahinda
- East Galesburg
- Galesburg
- Gilson
- Henderson
- Knoxville
- Maquon
- Oneida
- Rio
- Saint Augustine
- Victoria
- Wataga
- Williamsfield
- Yates City
ZIP Directory
- ZIP 61401
- ZIP 61402
- ZIP 61410
- ZIP 61414
- ZIP 61428
- ZIP 61430
- ZIP 61436
- ZIP 61439
- ZIP 61448
- ZIP 61458
- ZIP 61467
- ZIP 61472
- ZIP 61474
- ZIP 61485
- ZIP 61488
- ZIP 61489
- ZIP 61572
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.