ZIP code 58323 is officially located in the state of North dakota, primarily serving the city of Calvin. It falls under the administrative jurisdiction of Cavalier County. When planning mail delivery, logistics routing, or demographic research, 58323 operates within the Central Time (CT) timezone and supports the 501 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 58323 ZIP Code Tabulation Area is approximately 40,401. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $131,323.