Geographical and Demographic Overview of Oklahoma Counties1974-01-01unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_001_4_131_12_0086The document lists the names of various counties in Oklahoma and their populations. There are a total of 77 counties, with a population of 2.6 million. The document also mentions the presence of metro areas, special purpose districts, health service delivery systems, and other organizations within the state.