County ZIP codes · Washington · FIPS 53067
Thurston County, WA ZIP Codes
Thurston County, Washington has 22 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 15 residential and 7 for PO boxes or a single organization. 14 of the residential ones lie mainly in Thurston County and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $63,406 in 98531 (Centralia) to $113,053 in 98513 (Olympia) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Thurston 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 $89,002 and $99,411.
They carry 9 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 15 residential ZIP codes in Thurston County
14 ZIP codes lie mainly in Thurston County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 98501 | Olympia | 48,067 | 1,377 | $97k | $529k | 100% |
| 98503 | Lacey | 41,656 | 3,760 | $89k | $438k | 100% |
| 98513 | Olympia | 38,017 | 762 | $113k | $471k | 100% |
| 98502 | Olympia | 35,398 | 558 | $92k | $537k | 99% |
| 98512 | Olympia | 31,864 | 230 | $102k | $472k | 100% |
| 98516 | Olympia | 29,177 | 1,012 | $99k | $573k | 100% |
| 98597 | Yelm | 26,669 | 240 | $92k | $448k | 100% |
| 98506 | Olympia | 18,497 | 824 | $92k | $491k | 100% |
| 98579 | Rochester | 14,048 | 149 | $99k | $463k | 59% |
| 98589 | Tenino | 7,010 | 76 | $84k | $439k | 100% |
| 98576 | Rainier | 4,985 | 59 | $105k | $447k | 100% |
| 98505 | Olympia | 881 | 3,059 | – | – | 100% |
| 98530 | Bucoda | 619 | 230 | $81k | $335k | 100% |
| 98556 | Littlerock | 350 | 2,941 | – | – | 100% |
Partly in Thurston County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 98531 | Centralia | 27,337 | 212 | $63k | $343k | 21% |
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 Thurston County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Thurston | Elsewhere |
|---|---|---|
| 98502 | 99% | |
| 98531 | 21% | Lewis County 79% |
| 98579 | 59% | Lewis County 41% |
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 Thurston 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 Thurston County starts with 985.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 985 | Tacoma, WA (SCF 983) | 22 | 77 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.