ZIP code 99343 is officially located in the state of Washington, primarily serving the city of Mesa. It falls under the administrative jurisdiction of Franklin County. When planning mail delivery, logistics routing, or demographic research, 99343 operates within the Pacific Time (PT) timezone and supports the 498 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 99343 ZIP Code Tabulation Area is approximately 5,398. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $71,343.