| City: | Olympia, Washington |
| Names to Avoid: | Olympia Brm |
| County: | Thurston County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 12:10:05 AM |
| Population: | No Population Data |
| Area Codes: | 360 / 564 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 47.0381, -122.8995 |
| Quick Link: |
The Washington State Department of Revenue, the agency responsible for administering the state's excise and property tax laws, operates under dedicated ZIP code 98599 in Olympia, Thurston County. The department oversees tax collection and maintains physical offices at 1025 Union Avenue SE, while this ZIP code serves as a Business Reply Mail (BRM) designation for tax correspondence. The department provides services to businesses and individuals across Washington State. This postal designation has served the agency for over a decade.
Located in downtown Olympia, approximately 45 miles from Seattle, postal records show just one delivery code at this location. The absence of Census population data reflects this designation's purely administrative mail-processing function. The department maintains a toll-free taxpayer services line at (800) 647-7706. Olympia is the valid mailing city for this ZIP code.
| Residential: | 0 |
| Business: | 2 |
ZIP Code 98599 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,283Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 98599 is located in Thurston County, Washington, within the Olympia-Lacey-Tumwater, WA Metropolitan Statistical Area (CBSA 36500) and Washington's 9th Congressional District. This Metro area has a population of 296,640 people, about 0.00% of whom live in ZIP Code 98599. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Olympia-Lacey-Tumwater, WASource: Census |
| CBSA Number: | 36500Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 296,640Source: Census |
| MSA: | Seattle-Tacoma-Bremerton, WA CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 09Source: USPS |
| Congressional Land Area: | 183.43 sq miSource: Census |
| PMSA: | Olympia, WA PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 5351300Source: Census |
| Place Name: | Olympia city; WashingtonSource: Census |
We could not locate which school district 98599 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.