FIPS Code | State | County name | 1993 Rural-urban continuum code | Description | County population 1990 |
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| 40001 | OK | Adair County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 18,421 | | 40003 | OK | Alfalfa County | 8 | Nonmetro county completely rural or less than 2,500 urban pop., adj. to metro area | 6,416 | | 40005 | OK | Atoka County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 12,778 | | 40007 | OK | Beaver County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 6,023 | | 40009 | OK | Beckham County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 18,812 | | 40011 | OK | Blaine County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 11,470 | | 40013 | OK | Bryan County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 32,089 | | 40015 | OK | Caddo County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 29,550 | | 40017 | OK | Canadian County | 2 | County in metro area of 250,000 to 1 million population | 74,409 | | 40019 | OK | Carter County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 42,919 | | 40021 | OK | Cherokee County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 34,049 | | 40023 | OK | Choctaw County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 15,302 | | 40025 | OK | Cimarron County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 3,301 | | 40027 | OK | Cleveland County | 2 | County in metro area of 250,000 to 1 million population | 174,253 | | 40029 | OK | Coal County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 5,780 | | 40031 | OK | Comanche County | 3 | County in metro area of fewer than 250,000 population | 111,486 | | 40033 | OK | Cotton County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 6,651 | | 40035 | OK | Craig County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 14,104 | | 40037 | OK | Creek County | 2 | County in metro area of 250,000 to 1 million population | 60,915 | | 40039 | OK | Custer County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 26,897 | | 40041 | OK | Delaware County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 28,070 | | 40043 | OK | Dewey County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 5,551 | | 40045 | OK | Ellis County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 4,497 | | 40047 | OK | Garfield County | 3 | County in metro area of fewer than 250,000 population | 56,735 | | 40049 | OK | Garvin County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 26,605 | | 40051 | OK | Grady County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 41,747 | | 40053 | OK | Grant County | 8 | Nonmetro county completely rural or less than 2,500 urban pop., adj. to metro area | 5,689 | | 40055 | OK | Greer County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 6,559 | | 40057 | OK | Harmon County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 3,793 | | 40059 | OK | Harper County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 4,063 | | 40061 | OK | Haskell County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 10,940 | | 40063 | OK | Hughes County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 13,023 | | 40065 | OK | Jackson County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 28,764 | | 40067 | OK | Jefferson County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 7,010 | | 40069 | OK | Johnston County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 10,032 | | 40071 | OK | Kay County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 48,056 | | 40073 | OK | Kingfisher County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 13,212 | | 40075 | OK | Kiowa County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 11,347 | | 40077 | OK | Latimer County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 10,333 | | 40079 | OK | Le Flore County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 43,270 | | 40081 | OK | Lincoln County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 29,216 | | 40083 | OK | Logan County | 2 | County in metro area of 250,000 to 1 million population | 29,011 | | 40085 | OK | Love County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 8,157 | | 40087 | OK | McClain County | 2 | County in metro area of 250,000 to 1 million population | 22,795 | | 40089 | OK | McCurtain County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 33,433 | | 40091 | OK | McIntosh County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 16,779 | | 40093 | OK | Major County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 8,055 | | 40095 | OK | Marshall County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 10,829 | | 40097 | OK | Mayes County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 33,366 | | 40099 | OK | Murray County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 12,042 | | 40101 | OK | Muskogee County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 68,078 | | 40103 | OK | Noble County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 11,045 | | 40105 | OK | Nowata County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 9,992 | | 40107 | OK | Okfuskee County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 11,551 | | 40109 | OK | Oklahoma County | 2 | County in metro area of 250,000 to 1 million population | 599,611 | | 40111 | OK | Okmulgee County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 36,490 | | 40113 | OK | Osage County | 2 | County in metro area of 250,000 to 1 million population | 41,645 | | 40115 | OK | Ottawa County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 30,561 | | 40117 | OK | Pawnee County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 15,575 | | 40119 | OK | Payne County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 61,507 | | 40121 | OK | Pittsburg County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 40,581 | | 40123 | OK | Pontotoc County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 34,119 | | 40125 | OK | Pottawatomie County | 2 | County in metro area of 250,000 to 1 million population | 58,760 | | 40127 | OK | Pushmataha County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 10,997 | | 40129 | OK | Roger Mills County | 9 | Nonmetro county completely rural or less than 2,500 urban pop., not adj. to metro area | 4,147 | | 40131 | OK | Rogers County | 2 | County in metro area of 250,000 to 1 million population | 55,170 | | 40133 | OK | Seminole County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 25,412 | | 40135 | OK | Sequoyah County | 3 | County in metro area of fewer than 250,000 population | 33,828 | | 40137 | OK | Stephens County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 42,299 | | 40139 | OK | Texas County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 16,419 | | 40141 | OK | Tillman County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 10,384 | | 40143 | OK | Tulsa County | 2 | County in metro area of 250,000 to 1 million population | 503,341 | | 40145 | OK | Wagoner County | 2 | County in metro area of 250,000 to 1 million population | 47,883 | | 40147 | OK | Washington County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 48,066 | | 40149 | OK | Washita County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 11,441 | | 40151 | OK | Woods County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 9,103 | | 40153 | OK | Woodward County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 18,976 |
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