County ZIP codes · Oklahoma · FIPS 40019
Carter County, OK ZIP Codes
Carter County, Oklahoma has 17 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 15 residential and 2 for PO boxes or a single organization. 12 of the residential ones lie mainly in Carter County and 3 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $50,286 in 73438 (Healdton) to $61,989 in 73401 (Ardmore) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Carter County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $50,286 and $55,833.
They carry 15 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 15 residential ZIP codes in Carter County
12 ZIP codes lie mainly in Carter County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 73401 | Ardmore | 36,833 | 105 | $62k | $200k | 98% |
| 73463 | Wilson | 3,909 | 19 | $56k | $109k | 68% |
| 73443 | Lone Grove | 3,380 | 83 | $59k | $185k | 100% |
| 73438 | Healdton | 2,938 | 42 | $50k | $71k | 100% |
| 73481 | Ratliff City | 842 | 11 | $63k | $104k | 74% |
| 73458 | Springer | 741 | 8 | $86k | $243k | 100% |
| 73487 | Tatums | 178 | 13 | $31k | $78k | 100% |
| 73436 | Gene Autry | 152 | 541 | $62k | $77k | 100% |
| 73437 | Graham | 108 | 8 | $35k | $296k | 100% |
| 73444 | Hennepin | 103 | 7 | – | $121k | 86% |
| 73435 | Fox | 63 | 110 | $63k | $114k | 100% |
| 73488 | Tussy | 11 | 4 | – | – | 100% |
Partly in Carter County
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?
7 ZIP codes of Carter County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Carter | Elsewhere |
|---|---|---|
| 73401 | 98% | Love County 2% |
| 73463 | 68% | Love County 32% |
| 73456 | 10% | Jefferson County 79%; Love County 11% |
| 73481 | 74% | Stephens County 17%; Garvin County 9% |
| 73453 | 1% | Love County 99% |
| 73425 | 47% | Stephens County 53% |
| 73444 | 86% | Murray County 13%; Garvin County 1% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Carter County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Carter County starts with 734.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 734 | Oklahoma City, OK (SCF 730) | 17 | 35 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.