ZIP Code 99110
About Clayton
Clayton is an unincorporated community and census-designated place in Stevens County, Washington, United States. It is located along U.S. Route 395 4.5 miles (7.2 km) northwest of Deer Park, and has a post office with ZIP code 99110.
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Area Profile
US Census (ACS 5-year · Gazetteer)
1,592
population
$74,814
median household income
41
people / sq mi
$444,700
median home value
$902
median gross rent
36.7
median age
680
housing units
655
households
38.6
land area (sq mi)