There is 1 city in San Juan County, Washington.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Friday Harbor1Washington2,7592,6290.14%1,2772.16
showing: 1 rows

Cities in San Juan County, Washington by Population (2024)

What is the largest city in San Juan County, Washington?

Friday Harbor is the largest city in San Juan County.

What is the smallest city in San Juan County, Washington?

Friday Harbor is the smallest city in San Juan County.

How many cities are in San Juan County?

There is 1 city in San Juan County, Washington.

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