(select by clicking a county area)
The U.S. Post Office assigns zip Codes on a street-by-street basis generally within census block group areas.
Polygon data was obtained from U.S. Bureau of Census site http://www.census.gov/geo/www/cob/z52000.html.
Linework for this data was upgraded by Ecology staff using 1:24k county boundaries, 1:100k stream centerlines and additional polygons at 1:24k for new zip code areas not contained in the original data. Null areas of no zip code were expanded from the original data to include large contiguous blocks of Major Public Lands such as National Parks, and National and State Forest lands. All zip code numbers were checked against Washington State zip code list from the United States Postal Service (USPS) website: http://www.usps.com/zip4/.
Ecology makes no guarantee for the accuracy of these maps. The maps are assumed to be approximate USPS zip code delivery areas. Actual postal delivery areas may vary, and updates and new zip code areas are made without notice.
The following pertains to all 39 county maps:
All maps are for individual Washington State Counties.
All maps are formatted to the same page size either 8.5x11 or 11x8.5 inches and can be printed up to 11x14 page size without loss of resolution.
Local geographic information such as roads and route numbers, city and place names, streams and stream names are provided on this map series.
All maps are available in Adobe PDF format. JPG or EPS file format, are available by request.
Please note that colors on the maps may vary depending on your color printer.
Page updated: Tuesday, May 04, 2010 10:25, mw