| 1900 Federal
Census - Population Schedules 394 Enumeration Districts |
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| In 1900 the state of Washington was divided for enumeration purposes by the Census Bureau into two Supervisory Districts. SD 1 consisted of all counties west of the Cascade Mountains, SD 2 of all counties east of the Cascade Mountains. The counties contained in each district are listed below. Please click on the SD that the county you want is in. | |
| Supervisory
District 1
266 Enumeration Districts | Chehalis Clallam Clarke Cowlitz Island Jefferson King Kitsap Lewis Mason Pacific Pierce San Juan Skagit Skamania Snohomish Thurston Wahkiakum Whatcom Ouillayute, Makah, Ozette, & Hoh Indian Reservations
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| Supervisory
District 2
128 Enumeration Districts | Adams Asotin Chelan Columbia Douglas Ferry Franklin Garfield Kittitas Klickitat Lincoln Okanogan Spokane Stevens Walla Walla Whitman Yakima Spokane & Colville Indian Reservations
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