King County, located in the state of Washington, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to King County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
98102
98103
98115
98058
98070
98122
98083
98111
98198
98133
98136
98134
98034
98023
98052
98021
98055
98051
98194
98175
98224
98004
98007
98008
98019
98014
98092
98074
98106
98354
98030
98288
98035
98131
98001
98119
98144
98126
98124
98042
98158
98073
98113
98071
98062
98129
98002
98011
98006
98188
98199
98031
98022
98033
98039
98057
98045
98089
98063
98025
98191
98003
98109
98117
98118
98121
98155
98038
98032
98024
98053
98138
98181
98010
98107
98065
98072
98112
98146
98148
98145
98185
98050
98009
98101
98108
98077
98093
98251
98422
98168
98177
98125
98178
98127
98028
98047
98164
98015
98154
98195
98068
98005
98104
98105
98059
98075
98116
98166
98029
98040
98027
98056
98165
98041
98139
98174
98064
98161
98114

To know more about King County, click the button below:

King County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in King County County?

There are approximately 120 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in King County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.