ZIP code 99361 is officially located in the state of Washington, primarily serving the city of Waitsburg. It falls under the administrative jurisdiction of Walla Walla County. When planning mail delivery, logistics routing, or demographic research, 99361 operates within the Pacific Time (PT) timezone and supports the 273 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 99361 ZIP Code Tabulation Area is approximately 32,473. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $77,361.