FIPS Code | State | County name | 2003 urban influence code | Description | 2000 population |
|---|
| 01001 | AL | Autauga County | 2 | Small-in a metro area with fewer than 1 million residents | 43,671 |
| 01003 | AL | Baldwin County | 5 | Micropolitan adjacent to a small metro area | 140,415 |
| 01005 | AL | Barbour County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 29,038 |
| 01007 | AL | Bibb County | 1 | Large-in a metro area with at least 1 million residents or more | 20,826 |
| 01009 | AL | Blount County | 1 | Large-in a metro area with at least 1 million residents or more | 51,024 |
| 01011 | AL | Bullock County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 11,714 |
| 01013 | AL | Butler County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 21,399 |
| 01015 | AL | Calhoun County | 2 | Small-in a metro area with fewer than 1 million residents | 112,249 |
| 01017 | AL | Chambers County | 5 | Micropolitan adjacent to a small metro area | 36,583 |
| 01019 | AL | Cherokee County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 23,988 |
| 01021 | AL | Chilton County | 1 | Large-in a metro area with at least 1 million residents or more | 39,593 |
| 01023 | AL | Choctaw County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 15,922 |
| 01025 | AL | Clarke County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 27,867 |
| 01027 | AL | Clay County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 14,254 |
| 01029 | AL | Cleburne County | 4 | Noncore adjacent to a large metro area | 14,123 |
| 01031 | AL | Coffee County | 5 | Micropolitan adjacent to a small metro area | 43,615 |
| 01033 | AL | Colbert County | 2 | Small-in a metro area with fewer than 1 million residents | 54,984 |
| 01035 | AL | Conecuh County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 14,089 |
| 01037 | AL | Coosa County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 12,202 |
| 01039 | AL | Covington County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 37,631 |
| 01041 | AL | Crenshaw County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 13,665 |
| 01043 | AL | Cullman County | 3 | Micropolitan adjacent to a large metro area | 77,483 |
| 01045 | AL | Dale County | 5 | Micropolitan adjacent to a small metro area | 49,129 |
| 01047 | AL | Dallas County | 5 | Micropolitan adjacent to a small metro area | 46,365 |
| 01049 | AL | DeKalb County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 64,452 |
| 01051 | AL | Elmore County | 2 | Small-in a metro area with fewer than 1 million residents | 65,874 |
| 01053 | AL | Escambia County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 38,440 |
| 01055 | AL | Etowah County | 2 | Small-in a metro area with fewer than 1 million residents | 103,459 |
| 01057 | AL | Fayette County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 18,495 |
| 01059 | AL | Franklin County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 31,223 |
| 01061 | AL | Geneva County | 2 | Small-in a metro area with fewer than 1 million residents | 25,764 |
| 01063 | AL | Greene County | 2 | Small-in a metro area with fewer than 1 million residents | 9,974 |
| 01065 | AL | Hale County | 2 | Small-in a metro area with fewer than 1 million residents | 17,185 |
| 01067 | AL | Henry County | 2 | Small-in a metro area with fewer than 1 million residents | 16,310 |
| 01069 | AL | Houston County | 2 | Small-in a metro area with fewer than 1 million residents | 88,787 |
| 01071 | AL | Jackson County | 5 | Micropolitan adjacent to a small metro area | 53,926 |
| 01073 | AL | Jefferson County | 1 | Large-in a metro area with at least 1 million residents or more | 662,047 |
| 01075 | AL | Lamar County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 15,904 |
| 01077 | AL | Lauderdale County | 2 | Small-in a metro area with fewer than 1 million residents | 87,966 |
| 01079 | AL | Lawrence County | 2 | Small-in a metro area with fewer than 1 million residents | 34,803 |
| 01081 | AL | Lee County | 2 | Small-in a metro area with fewer than 1 million residents | 115,092 |
| 01083 | AL | Limestone County | 2 | Small-in a metro area with fewer than 1 million residents | 65,676 |
| 01085 | AL | Lowndes County | 2 | Small-in a metro area with fewer than 1 million residents | 13,473 |
| 01087 | AL | Macon County | 5 | Micropolitan adjacent to a small metro area | 24,105 |
| 01089 | AL | Madison County | 2 | Small-in a metro area with fewer than 1 million residents | 276,700 |
| 01091 | AL | Marengo County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 22,539 |
| 01093 | AL | Marion County | 4 | Noncore adjacent to a large metro area | 31,214 |
| 01095 | AL | Marshall County | 5 | Micropolitan adjacent to a small metro area | 82,231 |
| 01097 | AL | Mobile County | 2 | Small-in a metro area with fewer than 1 million residents | 399,843 |
| 01099 | AL | Monroe County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 24,324 |
| 01101 | AL | Montgomery County | 2 | Small-in a metro area with fewer than 1 million residents | 223,510 |
| 01103 | AL | Morgan County | 2 | Small-in a metro area with fewer than 1 million residents | 111,064 |
| 01105 | AL | Perry County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 11,861 |
| 01107 | AL | Pickens County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 20,949 |
| 01109 | AL | Pike County | 5 | Micropolitan adjacent to a small metro area | 29,605 |
| 01111 | AL | Randolph County | 4 | Noncore adjacent to a large metro area | 22,380 |
| 01113 | AL | Russell County | 2 | Small-in a metro area with fewer than 1 million residents | 49,756 |
| 01115 | AL | St. Clair County | 1 | Large-in a metro area with at least 1 million residents or more | 64,742 |
| 01117 | AL | Shelby County | 1 | Large-in a metro area with at least 1 million residents or more | 143,293 |
| 01119 | AL | Sumter County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 14,798 |
| 01121 | AL | Talladega County | 5 | Micropolitan adjacent to a small metro area | 80,321 |
| 01123 | AL | Tallapoosa County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 41,475 |
| 01125 | AL | Tuscaloosa County | 2 | Small-in a metro area with fewer than 1 million residents | 164,875 |
| 01127 | AL | Walker County | 1 | Large-in a metro area with at least 1 million residents or more | 70,713 |
| 01129 | AL | Washington County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 18,097 |
| 01131 | AL | Wilcox County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 13,183 |
| 01133 | AL | Winston County | 4 | Noncore adjacent to a large metro area | 24,843 |