FIPS Code | State | County name | 2003 urban influence code | Description | 2000 population |
|---|
| 37001 | NC | Alamance County | 2 | Small-in a metro area with fewer than 1 million residents | 130,800 |
| 37003 | NC | Alexander County | 2 | Small-in a metro area with fewer than 1 million residents | 33,603 |
| 37005 | NC | Alleghany County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 10,677 |
| 37007 | NC | Anson County | 1 | Large-in a metro area with at least 1 million residents or more | 25,275 |
| 37009 | NC | Ashe County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 24,384 |
| 37011 | NC | Avery County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 17,167 |
| 37013 | NC | Beaufort County | 5 | Micropolitan adjacent to a small metro area | 44,958 |
| 37015 | NC | Bertie County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 19,773 |
| 37017 | NC | Bladen County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 32,278 |
| 37019 | NC | Brunswick County | 2 | Small-in a metro area with fewer than 1 million residents | 73,143 |
| 37021 | NC | Buncombe County | 2 | Small-in a metro area with fewer than 1 million residents | 206,330 |
| 37023 | NC | Burke County | 2 | Small-in a metro area with fewer than 1 million residents | 89,148 |
| 37025 | NC | Cabarrus County | 1 | Large-in a metro area with at least 1 million residents or more | 131,063 |
| 37027 | NC | Caldwell County | 2 | Small-in a metro area with fewer than 1 million residents | 77,415 |
| 37029 | NC | Camden County | 3 | Micropolitan adjacent to a large metro area | 6,885 |
| 37031 | NC | Carteret County | 5 | Micropolitan adjacent to a small metro area | 59,383 |
| 37033 | NC | Caswell County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 23,501 |
| 37035 | NC | Catawba County | 2 | Small-in a metro area with fewer than 1 million residents | 141,685 |
| 37037 | NC | Chatham County | 2 | Small-in a metro area with fewer than 1 million residents | 49,329 |
| 37039 | NC | Cherokee County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 24,298 |
| 37041 | NC | Chowan County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 14,526 |
| 37043 | NC | Clay County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 8,775 |
| 37045 | NC | Cleveland County | 3 | Micropolitan adjacent to a large metro area | 96,287 |
| 37047 | NC | Columbus County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 54,749 |
| 37049 | NC | Craven County | 8 | Micropolitan not adjacent to a metro area | 91,436 |
| 37051 | NC | Cumberland County | 2 | Small-in a metro area with fewer than 1 million residents | 302,963 |
| 37053 | NC | Currituck County | 1 | Large-in a metro area with at least 1 million residents or more | 18,190 |
| 37055 | NC | Dare County | 8 | Micropolitan not adjacent to a metro area | 29,967 |
| 37057 | NC | Davidson County | 5 | Micropolitan adjacent to a small metro area | 147,246 |
| 37059 | NC | Davie County | 2 | Small-in a metro area with fewer than 1 million residents | 34,835 |
| 37061 | NC | Duplin County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 49,063 |
| 37063 | NC | Durham County | 2 | Small-in a metro area with fewer than 1 million residents | 223,314 |
| 37065 | NC | Edgecombe County | 2 | Small-in a metro area with fewer than 1 million residents | 55,606 |
| 37067 | NC | Forsyth County | 2 | Small-in a metro area with fewer than 1 million residents | 306,067 |
| 37069 | NC | Franklin County | 2 | Small-in a metro area with fewer than 1 million residents | 47,260 |
| 37071 | NC | Gaston County | 1 | Large-in a metro area with at least 1 million residents or more | 190,365 |
| 37073 | NC | Gates County | 4 | Noncore adjacent to a large metro area | 10,516 |
| 37075 | NC | Graham County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 7,993 |
| 37077 | NC | Granville County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 48,498 |
| 37079 | NC | Greene County | 2 | Small-in a metro area with fewer than 1 million residents | 18,974 |
| 37081 | NC | Guilford County | 2 | Small-in a metro area with fewer than 1 million residents | 421,048 |
| 37083 | NC | Halifax County | 5 | Micropolitan adjacent to a small metro area | 57,370 |
| 37085 | NC | Harnett County | 5 | Micropolitan adjacent to a small metro area | 91,025 |
| 37087 | NC | Haywood County | 2 | Small-in a metro area with fewer than 1 million residents | 54,033 |
| 37089 | NC | Henderson County | 2 | Small-in a metro area with fewer than 1 million residents | 89,173 |
| 37091 | NC | Hertford County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 22,601 |
| 37093 | NC | Hoke County | 2 | Small-in a metro area with fewer than 1 million residents | 33,646 |
| 37095 | NC | Hyde County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 5,826 |
| 37097 | NC | Iredell County | 3 | Micropolitan adjacent to a large metro area | 122,660 |
| 37099 | NC | Jackson County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 33,121 |
| 37101 | NC | Johnston County | 2 | Small-in a metro area with fewer than 1 million residents | 121,965 |
| 37103 | NC | Jones County | 5 | Micropolitan adjacent to a small metro area | 10,381 |
| 37105 | NC | Lee County | 5 | Micropolitan adjacent to a small metro area | 49,040 |
| 37107 | NC | Lenoir County | 5 | Micropolitan adjacent to a small metro area | 59,648 |
| 37109 | NC | Lincoln County | 3 | Micropolitan adjacent to a large metro area | 63,780 |
| 37111 | NC | McDowell County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 42,151 |
| 37113 | NC | Macon County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 29,811 |
| 37115 | NC | Madison County | 2 | Small-in a metro area with fewer than 1 million residents | 19,635 |
| 37117 | NC | Martin County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 25,593 |
| 37119 | NC | Mecklenburg County | 1 | Large-in a metro area with at least 1 million residents or more | 695,454 |
| 37121 | NC | Mitchell County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 15,687 |
| 37123 | NC | Montgomery County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 26,822 |
| 37125 | NC | Moore County | 5 | Micropolitan adjacent to a small metro area | 74,769 |
| 37127 | NC | Nash County | 2 | Small-in a metro area with fewer than 1 million residents | 87,420 |
| 37129 | NC | New Hanover County | 2 | Small-in a metro area with fewer than 1 million residents | 160,307 |
| 37131 | NC | Northampton County | 8 | Micropolitan not adjacent to a metro area | 22,086 |
| 37133 | NC | Onslow County | 2 | Small-in a metro area with fewer than 1 million residents | 150,355 |
| 37135 | NC | Orange County | 2 | Small-in a metro area with fewer than 1 million residents | 118,227 |
| 37137 | NC | Pamlico County | 8 | Micropolitan not adjacent to a metro area | 12,934 |
| 37139 | NC | Pasquotank County | 8 | Micropolitan not adjacent to a metro area | 34,897 |
| 37141 | NC | Pender County | 2 | Small-in a metro area with fewer than 1 million residents | 41,082 |
| 37143 | NC | Perquimans County | 8 | Micropolitan not adjacent to a metro area | 11,368 |
| 37145 | NC | Person County | 2 | Small-in a metro area with fewer than 1 million residents | 35,623 |
| 37147 | NC | Pitt County | 2 | Small-in a metro area with fewer than 1 million residents | 133,798 |
| 37149 | NC | Polk County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 18,324 |
| 37151 | NC | Randolph County | 2 | Small-in a metro area with fewer than 1 million residents | 130,454 |
| 37153 | NC | Richmond County | 5 | Micropolitan adjacent to a small metro area | 46,564 |
| 37155 | NC | Robeson County | 5 | Micropolitan adjacent to a small metro area | 123,339 |
| 37157 | NC | Rockingham County | 2 | Small-in a metro area with fewer than 1 million residents | 91,928 |
| 37159 | NC | Rowan County | 3 | Micropolitan adjacent to a large metro area | 130,340 |
| 37161 | NC | Rutherford County | 5 | Micropolitan adjacent to a small metro area | 62,899 |
| 37163 | NC | Sampson County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 60,161 |
| 37165 | NC | Scotland County | 5 | Micropolitan adjacent to a small metro area | 35,998 |
| 37167 | NC | Stanly County | 3 | Micropolitan adjacent to a large metro area | 58,100 |
| 37169 | NC | Stokes County | 2 | Small-in a metro area with fewer than 1 million residents | 44,711 |
| 37171 | NC | Surry County | 5 | Micropolitan adjacent to a small metro area | 71,219 |
| 37173 | NC | Swain County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 12,968 |
| 37175 | NC | Transylvania County | 5 | Micropolitan adjacent to a small metro area | 29,334 |
| 37177 | NC | Tyrrell County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 4,149 |
| 37179 | NC | Union County | 1 | Large-in a metro area with at least 1 million residents or more | 123,677 |
| 37181 | NC | Vance County | 5 | Micropolitan adjacent to a small metro area | 42,954 |
| 37183 | NC | Wake County | 2 | Small-in a metro area with fewer than 1 million residents | 627,846 |
| 37185 | NC | Warren County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 19,972 |
| 37187 | NC | Washington County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 13,723 |
| 37189 | NC | Watauga County | 5 | Micropolitan adjacent to a small metro area | 42,695 |
| 37191 | NC | Wayne County | 2 | Small-in a metro area with fewer than 1 million residents | 113,329 |
| 37193 | NC | Wilkes County | 5 | Micropolitan adjacent to a small metro area | 65,632 |
| 37195 | NC | Wilson County | 5 | Micropolitan adjacent to a small metro area | 73,814 |
| 37197 | NC | Yadkin County | 2 | Small-in a metro area with fewer than 1 million residents | 36,348 |
| 37199 | NC | Yancey County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 17,774 |