Washington County, Kansas ZIP Codes
- ZIP records
11 - Cities represented
11 - Sum of listed ZIP population estimates
5,761
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 | 66968 | Washington | 1,454 |
| 2 | 66945 | Hanover | 1,063 |
| 3 | 66937 | Clifton | 691 |
| 4 | 66953 | Linn | 628 |
| 5 | 66943 | Greenleaf | 568 |
| 6 | 66933 | Barnes | 345 |
| 7 | 66944 | Haddam | 304 |
| 8 | 66962 | Palmer | 302 |
| 9 | 66958 | Morrowville | 198 |
| 10 | 66946 | Hollenberg | 161 |
Cities in Washington County
ZIP Directory
Browse all ZIP data for Kansas
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.