County ZIP codes · Kansas · FIPS 20065
Graham County, KS ZIP Codes
Graham County, Kansas has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Graham County and 9 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $49,896 in 67642 (Hill City) to $75,417 in 67740 (Hoxie) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Graham County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 13 residential ZIP codes in Graham County
4 ZIP codes lie mainly in Graham County; 9 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 67642 | Hill City | 1,752 | 7 | $50k | $99k | 100% |
| 67625 | Bogue | 237 | 2 | $36k | $65k | 100% |
| 67650 | Morland | 204 | 1 | $54k | $76k | 100% |
| 67659 | Penokee | 56 | 1 | $86k | $157k | 100% |
Partly in Graham County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 67657 | Palco | 326 | 3 | $67k | $114k | 49% |
| 67632 | Damar | 201 | 3 | $65k | $117k | 35% |
| 67645 | Lenora | 531 | 2 | $49k | $82k | 30% |
| 67672 | Wakeeney | 2,159 | 7 | $84k | $119k | 16% |
| 67631 | Collyer | 93 | 1 | $82k | $88k | 13% |
| 67656 | Ogallah | 220 | 2 | $74k | $209k | 12% |
| 67646 | Logan | 685 | 4 | $69k | $78k | 6% |
| 67740 | Hoxie | 1,592 | 4 | $75k | $187k | 3% |
| 67637 | Ellis | 2,711 | 8 | $74k | $159k | 1% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
9 ZIP codes of Graham County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Graham | Elsewhere |
|---|---|---|
| 67637 | 1% | Ellis County 50%; Trego County 49% |
| 67672 | 16% | Trego County 84% |
| 67740 | 3% | Sheridan County 97% |
| 67646 | 6% | Phillips County 56%; Norton County 26%; Rooks County 13% |
| 67645 | 30% | Norton County 70% |
| 67657 | 49% | Rooks County 50%; Trego County 1% |
| 67656 | 12% | Trego County 88% |
| 67632 | 35% | Rooks County 65% |
| 67631 | 13% | Trego County 86%; Sheridan County 1% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Graham County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Graham County's ZIP codes use 2 prefixes: 676 and 677.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.