ZIP code 17340 is officially located in the state of Pennsylvania, primarily serving the city of Littlestown. It falls under the administrative jurisdiction of Adams County. When planning mail delivery, logistics routing, or demographic research, 17340 operates within the Eastern Time (ET) timezone and supports the 369 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 17340 ZIP Code Tabulation Area is approximately 35,369. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,340.