McClain County ZIP Codes

List of ZIP Codes in McClain County

The following table lists ZIP Codes associated with McClain County, Oklahoma, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About McClain County ZIP Codes

McClain County in Oklahoma (OK) is served by approximately 6 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 28,005 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in McClain County are located in cities such as Newcastle, Purcell, Washington, Wayne, Byars. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in McClain County, Oklahoma follow the America/Chicago time zone.