100 Smallest ZIP Codes in the United States by Population in Knox County, Illinois
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Knox County, Illinois.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 61439 | HENDERSON | IL | 250 |
| 2 | 61474 | SAINT AUGUSTINE | IL | 285 |
| 3 | 61485 | VICTORIA | IL | 387 |
| 4 | 61472 | RIO | IL | 387 |
| 5 | 61458 | MAQUON | IL | 464 |
| 6 | 61430 | EAST GALESBURG | IL | 618 |
| 7 | 61436 | GILSON | IL | 787 |
| 8 | 61414 | ALTONA | IL | 794 |
| 9 | 61489 | WILLIAMSFIELD | IL | 841 |
| 10 | 61572 | YATES CITY | IL | 1,029 |
| 11 | 61428 | DAHINDA | IL | 1,162 |
| 12 | 61467 | ONEIDA | IL | 1,244 |
| 13 | 61488 | WATAGA | IL | 1,284 |
| 14 | 61402 | GALESBURG | IL | 1,748 |
| 15 | 61410 | ABINGDON | IL | 3,730 |
| 16 | 61448 | KNOXVILLE | IL | 4,076 |
| 17 | 61401 | GALESBURG | IL | 30,809 |