ZIP code 74021 is officially located in the state of Oklahoma, primarily serving the city of Collinsville. It falls under the administrative jurisdiction of Tulsa County. When planning mail delivery, logistics routing, or demographic research, 74021 operates within the Central Time (CT) timezone and supports the 323 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 74021 ZIP Code Tabulation Area is approximately 9,423. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,021.