FIPS Code | State | County name | 2003 Rural-urban continuum code | Description | County population 2000 |
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| 17001 | IL | Adams County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 68,277 | | 17003 | IL | Alexander County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 9,590 | | 17005 | IL | Bond County | 1 | County in metro area with 1 million population or more | 17,633 | | 17007 | IL | Boone County | 2 | County in metro area of 250,000 to 1 million population | 41,786 | | 17009 | IL | Brown County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 6,950 | | 17011 | IL | Bureau County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 35,503 | | 17013 | IL | Calhoun County | 1 | County in metro area with 1 million population or more | 5,084 | | 17015 | IL | Carroll County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 16,674 | | 17017 | IL | Cass County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 13,695 | | 17019 | IL | Champaign County | 3 | County in metro area of fewer than 250,000 population | 179,669 | | 17021 | IL | Christian County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 35,372 | | 17023 | IL | Clark County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 17,008 | | 17025 | IL | Clay County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 14,560 | | 17027 | IL | Clinton County | 1 | County in metro area with 1 million population or more | 35,535 | | 17029 | IL | Coles County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 53,196 | | 17031 | IL | Cook County | 1 | County in metro area with 1 million population or more | 5,376,741 | | 17033 | IL | Crawford County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 20,452 | | 17035 | IL | Cumberland County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 11,253 | | 17037 | IL | DeKalb County | 1 | County in metro area with 1 million population or more | 88,969 | | 17039 | IL | De Witt County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 16,798 | | 17041 | IL | Douglas County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 19,922 | | 17043 | IL | DuPage County | 1 | County in metro area with 1 million population or more | 904,161 | | 17045 | IL | Edgar County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 19,704 | | 17047 | IL | Edwards County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 6,971 | | 17049 | IL | Effingham County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 34,264 | | 17051 | IL | Fayette County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 21,802 | | 17053 | IL | Ford County | 3 | County in metro area of fewer than 250,000 population | 14,241 | | 17055 | IL | Franklin County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 39,018 | | 17057 | IL | Fulton County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 38,250 | | 17059 | IL | Gallatin County | 8 | Nonmetro county completely rural or less than 2,500 urban population, adj. to metro area | 6,445 | | 17061 | IL | Greene County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 14,761 | | 17063 | IL | Grundy County | 1 | County in metro area with 1 million population or more | 37,535 | | 17065 | IL | Hamilton County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 8,621 | | 17067 | IL | Hancock County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 20,121 | | 17069 | IL | Hardin County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 4,800 | | 17071 | IL | Henderson County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 8,213 | | 17073 | IL | Henry County | 2 | County in metro area of 250,000 to 1 million population | 51,020 | | 17075 | IL | Iroquois County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 31,334 | | 17077 | IL | Jackson County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 59,612 | | 17079 | IL | Jasper County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 10,117 | | 17081 | IL | Jefferson County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 40,045 | | 17083 | IL | Jersey County | 1 | County in metro area with 1 million population or more | 21,668 | | 17085 | IL | Jo Daviess County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 22,289 | | 17087 | IL | Johnson County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 12,878 | | 17089 | IL | Kane County | 1 | County in metro area with 1 million population or more | 404,119 | | 17091 | IL | Kankakee County | 3 | County in metro area of fewer than 250,000 population | 103,833 | | 17093 | IL | Kendall County | 1 | County in metro area with 1 million population or more | 54,544 | | 17095 | IL | Knox County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 55,836 | | 17097 | IL | Lake County | 1 | County in metro area with 1 million population or more | 644,356 | | 17099 | IL | La Salle County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 111,509 | | 17101 | IL | Lawrence County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 15,452 | | 17103 | IL | Lee County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 36,062 | | 17105 | IL | Livingston County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 39,678 | | 17107 | IL | Logan County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 31,183 | | 17109 | IL | McDonough County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 32,913 | | 17111 | IL | McHenry County | 1 | County in metro area with 1 million population or more | 260,077 | | 17113 | IL | McLean County | 3 | County in metro area of fewer than 250,000 population | 150,433 | | 17115 | IL | Macon County | 3 | County in metro area of fewer than 250,000 population | 114,706 | | 17117 | IL | Macoupin County | 1 | County in metro area with 1 million population or more | 49,019 | | 17119 | IL | Madison County | 1 | County in metro area with 1 million population or more | 258,941 | | 17121 | IL | Marion County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 41,691 | | 17123 | IL | Marshall County | 2 | County in metro area of 250,000 to 1 million population | 13,180 | | 17125 | IL | Mason County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 16,038 | | 17127 | IL | Massac County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 15,161 | | 17129 | IL | Menard County | 3 | County in metro area of fewer than 250,000 population | 12,486 | | 17131 | IL | Mercer County | 2 | County in metro area of 250,000 to 1 million population | 16,957 | | 17133 | IL | Monroe County | 1 | County in metro area with 1 million population or more | 27,619 | | 17135 | IL | Montgomery County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 30,652 | | 17137 | IL | Morgan County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 36,616 | | 17139 | IL | Moultrie County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 14,287 | | 17141 | IL | Ogle County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 51,032 | | 17143 | IL | Peoria County | 2 | County in metro area of 250,000 to 1 million population | 183,433 | | 17145 | IL | Perry County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 23,094 | | 17147 | IL | Piatt County | 3 | County in metro area of fewer than 250,000 population | 16,365 | | 17149 | IL | Pike County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 17,384 | | 17151 | IL | Pope County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 4,413 | | 17153 | IL | Pulaski County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 7,348 | | 17155 | IL | Putnam County | 8 | Nonmetro county completely rural or less than 2,500 urban population, adj. to metro area | 6,086 | | 17157 | IL | Randolph County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 33,893 | | 17159 | IL | Richland County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 16,149 | | 17161 | IL | Rock Island County | 2 | County in metro area of 250,000 to 1 million population | 149,374 | | 17163 | IL | St. Clair County | 1 | County in metro area with 1 million population or more | 256,082 | | 17165 | IL | Saline County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 26,733 | | 17167 | IL | Sangamon County | 3 | County in metro area of fewer than 250,000 population | 188,951 | | 17169 | IL | Schuyler County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 7,189 | | 17171 | IL | Scott County | 9 | Nonmetro county completely rural or less than 2,500 urban population, not adj. to metro area | 5,537 | | 17173 | IL | Shelby County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 22,893 | | 17175 | IL | Stark County | 2 | County in metro area of 250,000 to 1 million population | 6,332 | | 17177 | IL | Stephenson County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 48,979 | | 17179 | IL | Tazewell County | 2 | County in metro area of 250,000 to 1 million population | 128,485 | | 17181 | IL | Union County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 18,293 | | 17183 | IL | Vermilion County | 3 | County in metro area of fewer than 250,000 population | 83,919 | | 17185 | IL | Wabash County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 12,937 | | 17187 | IL | Warren County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 18,735 | | 17189 | IL | Washington County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 15,148 | | 17191 | IL | Wayne County | 7 | Nonmetro county with urban population of 2,500-19,999, not adjacent to a metro area | 17,151 | | 17193 | IL | White County | 6 | Nonmetro county with urban population of 2,500-19,999, adjacent to a metro area | 15,371 | | 17195 | IL | Whiteside County | 4 | Nonmetro county with urban population of 20,000 or more, adjacent to a metro area | 60,653 | | 17197 | IL | Will County | 1 | County in metro area with 1 million population or more | 502,266 | | 17199 | IL | Williamson County | 5 | Nonmetro county with urban population of 20,000 or more, not adjacent to a metro area | 61,296 | | 17201 | IL | Winnebago County | 2 | County in metro area of 250,000 to 1 million population | 278,418 | | 17203 | IL | Woodford County | 2 | County in metro area of 250,000 to 1 million population | 35,469 |
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