ZIP code 16677 is officially located in the state of Pennsylvania, primarily serving the city of Sandy ridge. It falls under the administrative jurisdiction of Centre County. When planning mail delivery, logistics routing, or demographic research, 16677 operates within the Eastern Time (ET) timezone and supports the 799 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 16677 ZIP Code Tabulation Area is approximately 9,899. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $49,677.