Underwood ZIP Codes

List of Zip Codes of Underwood

The following table lists ZIP Codes associated with Underwood, Washington, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About Underwood Washington Zip Codes

The city of Underwood in Washington (WA) is served by approximately 1 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 935 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Underwood fall within county jurisdictions such as Skamania. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Underwood, Washington follow the America/Los_Angeles time zone.