San Juan County, Washington

San Juan County
San Juan County Courthouse
San Juan County Courthouse
Flag of San Juan County
Motto: 
A World Away[citation needed]
Map of Washington highlighting San Juan County
Location within the U.S. state of Washington
Map of the United States highlighting Washington
Washington's location within the U.S.
Coordinates: 48°34′N 122°58′W / 48.57°N 122.97°W / 48.57; -122.97
Country United States
State Washington
FoundedOctober 31, 1873
Named forSan Juan Islands
SeatFriday Harbor
Largest townFriday Harbor
Area
 • Total
621 sq mi (1,610 km2)
 • Land174 sq mi (450 km2)
 • Water447 sq mi (1,160 km2)  72%
Population
 (2020)
 • Total
17,788
 • Estimate 
(2023)
18,566 Increase
 • Density96/sq mi (37/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
Congressional district2nd
Websitewww.sanjuanco.com

San Juan County is a county in the Salish Sea in the far northwestern corner of the U.S. state of Washington. As of the 2020 census, its population was 17,788.[1] The county seat and only incorporated town is Friday Harbor,[2] on San Juan Island. The county was formed on October 31, 1873, from Whatcom County[3] and is named for the San Juan Islands, which are in turn named for Juan Vicente de Güemes, 2nd Count of Revillagigedo,[4] the Viceroy of New Spain.

Although the islands have no state highways, the ferry routes serving them are designated as part of the state highway system.

  1. ^ "State & County QuickFacts". United States Census Bureau. Retrieved November 10, 2024.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ Hayes, Derek (1999). Historical Atlas of the Pacific Northwest: Maps of Exploration and Discovery; British Columbia, Washington, Oregaon, Alaska, Yukon. Sasquatch Books. pp. 72–73. ISBN 978-1-57061-215-2. Retrieved April 21, 2013.

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