San Juan County, WA ZIP codes
There are 9 ZIP codes in San Juan County, WA, in 9 towns, from 98222 to 98297. The largest are 98250 (Friday Harbor), 98245 (Eastsound) and 98261 (Lopez Island).
The county seat is Friday Harbor.
- ZIP codes
- 9
- Towns
- 9
- County seat
- Friday Harbor
- County FIPS
53055- State
- Washington
- Population
- 18,478
- Median household income
- $84,800
- Land area
- 174 sq mi
San Juan County ZIP codes by town
- Friday Harbor (county seat)
- 98250
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of San Juan County ZIP codes
The ZIP codes of San Juan County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
San Juan County in numbers
About 18,478 people live in San Juan County, in 9,015 households, the 32nd most populous of Washington's 39 counties. The median household income is $84,800 a year, 14% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $799,200 (42% above the Washington median), and median gross rent is $1,512 a month. The median age is 57.0; 53.9% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 16 minutes.
| Population | 18,478 |
|---|---|
| Households | 9,015 |
| Median age | 57.0 |
| Median household income | $84,800 |
| Median home value | $799,200 |
| Median gross rent | $1,512 |
| Bachelor's degree or higher | 53.9% |
| Mean commute | 15.8 min |
| Population density | 106 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in San Juan County
| Town | ZIP codes | Population |
|---|---|---|
| Eastsound | 1 | 4,265 |
| Lopez Island | 1 | 2,984 |
| Friday Harbor | 1 | 2,728 |
| Olga | 1 | 680 |
| Orcas | 1 | 442 |
| Deer Harbor | 1 | 327 |
| Shaw Island | 1 | 155 |
| Blakely Island | 1 | 121 |
| Waldron | 1 | 47 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with San Juan County.
Not sure you are in San Juan County? What county am I in? answers from your location, near a county line included.
Every ZIP code in San Juan County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
98222 | Blakely Island , WA | Standard | 121 | $106,333 | $801,500 |
98243 | Deer Harbor , WA | Standard | 327 | $139,167 | $1,094,800 |
98245 | Eastsound , WA | Standard | 4,265 | $95,811 | $772,600 |
98250 | Friday Harbor , WA | Standard | 9,254 | $88,556 | $801,200 |
98261 | Lopez Island , WA | Standard | 2,984 | $80,119 | $787,800 |
98279 | Olga , WA | Standard | 680 | $70,417 | $937,500 |
98280 | Orcas , WA | Standard | 442 | $80,192 | $1,031,300 |
98286 | Shaw Island , WA | Standard | 155 | $74,250 | $675,000 |
98297 | Waldron , WA | Standard | 47 | $45,625 | $405,600 |
Cite this page
zipcodes.pro. “San Juan County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wa/county/san-juan
Underlying data is public domain or openly licensed — sources, vintages and licences.