County ZIP codes · Oklahoma · FIPS 40055
Greer County, OK ZIP Codes
Greer County, Oklahoma has 4 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Greer County and 1 mainly in a neighboring county; 3 cross the county line.
- ACS2020-24
- Census2020
Where are the ZIP codes of Greer County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All 4 residential ZIP codes in Greer County
3 ZIP codes lie mainly in Greer County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 73554 | Mangum | 3,309 | 9 | $56k | $106k | 86% |
| 73547 | Granite | 1,853 | 16 | $64k | $121k | 100% |
| 73673 | Willow | 302 | 1 | $58k | – | 91% |
Partly in Greer County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 73526 | Blair | 2,049 | 26 | $66k | $222k | 15% |
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?
3 ZIP codes of Greer County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Greer | Elsewhere |
|---|---|---|
| 73554 | 86% | Harmon County13%; Jackson County1% |
| 73526 | 15% | Jackson County85% |
| 73673 | 91% | Beckham County9% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Greer County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Greer County's ZIP codes use 2 prefixes: 735 and 736.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.