This list presents the full set of buildings, structures, objects, sites, or districts designated on the National Register of Historic Places in Island County, Washington, and offers brief descriptive information about each of them. The National Register recognizes places of national, state, or local historic significance across the United States.[1] Out of over 90,000 National Register sites nationwide,[2]Washington is home to approximately 1,500,[3] and 16 of those are found partially or wholly in Island County.
^Numbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
^The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.
