Piatt County, Illinois ZIP Codes
- ZIP records
11 - Cities represented
11 - Sum of listed ZIP population estimates
17,335
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 | 61856 | Monticello | 8,226 |
| 2 | 61813 | Bement | 2,043 |
| 3 | 61818 | Cerro Gordo | 1,560 |
| 4 | 61913 | Atwood | 1,300 |
| 5 | 61854 | Mansfield | 1,299 |
| 6 | 61884 | White Heath | 973 |
| 7 | 61929 | Hammond | 672 |
| 8 | 61839 | De Land | 558 |
| 9 | 61830 | Cisco | 510 |
| 10 | 61936 | La Place | 170 |
Cities in Piatt County
ZIP Directory
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.