FIPS
Code | State | County name | 2003 urban
influence code | Description | 2000 population |
|---|
| 08001 | CO | Adams County | 1 | Large-in a metro area with at least 1 million residents or more | 363,857 |
| 08003 | CO | Alamosa County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 14,966 |
| 08005 | CO | Arapahoe County | 1 | Large-in a metro area with at least 1 million residents or more | 487,967 |
| 08007 | CO | Archuleta County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 9,898 |
| 08009 | CO | Baca County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 4,517 |
| 08011 | CO | Bent County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 5,998 |
| 08013 | CO | Boulder County | 2 | Small-in a metro area with fewer than 1 million residents | 291,288 |
| 08014 | CO | Broomfield County | 1 | Large-in a metro area with at least 1 million residents or more | |
| 08015 | CO | Chaffee County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 16,242 |
| 08017 | CO | Cheyenne County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 2,231 |
| 08019 | CO | Clear Creek County | 1 | Large-in a metro area with at least 1 million residents or more | 9,322 |
| 08021 | CO | Conejos County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 8,400 |
| 08023 | CO | Costilla County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 3,663 |
| 08025 | CO | Crowley County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 5,518 |
| 08027 | CO | Custer County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 3,503 |
| 08029 | CO | Delta County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 27,834 |
| 08031 | CO | Denver County | 1 | Large-in a metro area with at least 1 million residents or more | 554,636 |
| 08033 | CO | Dolores County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 1,844 |
| 08035 | CO | Douglas County | 1 | Large-in a metro area with at least 1 million residents or more | 175,766 |
| 08037 | CO | Eagle County | 8 | Micropolitan not adjacent to a metro area | 41,659 |
| 08039 | CO | Elbert County | 1 | Large-in a metro area with at least 1 million residents or more | 19,872 |
| 08041 | CO | El Paso County | 2 | Small-in a metro area with fewer than 1 million residents | 516,929 |
| 08043 | CO | Fremont County | 5 | Micropolitan adjacent to a small metro area | 46,145 |
| 08045 | CO | Garfield County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 43,791 |
| 08047 | CO | Gilpin County | 1 | Large-in a metro area with at least 1 million residents or more | 4,757 |
| 08049 | CO | Grand County | 4 | Noncore adjacent to a large metro area | 12,442 |
| 08051 | CO | Gunnison County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 13,956 |
| 08053 | CO | Hinsdale County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 790 |
| 08055 | CO | Huerfano County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 7,862 |
| 08057 | CO | Jackson County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 1,577 |
| 08059 | CO | Jefferson County | 1 | Large-in a metro area with at least 1 million residents or more | 527,056 |
| 08061 | CO | Kiowa County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 1,622 |
| 08063 | CO | Kit Carson County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 8,011 |
| 08065 | CO | Lake County | 8 | Micropolitan not adjacent to a metro area | 7,812 |
| 08067 | CO | La Plata County | 5 | Micropolitan adjacent to a small metro area | 43,941 |
| 08069 | CO | Larimer County | 2 | Small-in a metro area with fewer than 1 million residents | 251,494 |
| 08071 | CO | Las Animas County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 15,207 |
| 08073 | CO | Lincoln County | 4 | Noncore adjacent to a large metro area | 6,087 |
| 08075 | CO | Logan County | 8 | Micropolitan not adjacent to a metro area | 20,504 |
| 08077 | CO | Mesa County | 2 | Small-in a metro area with fewer than 1 million residents | 116,255 |
| 08079 | CO | Mineral County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 831 |
| 08081 | CO | Moffat County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 13,184 |
| 08083 | CO | Montezuma County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 23,830 |
| 08085 | CO | Montrose County | 8 | Micropolitan not adjacent to a metro area | 33,432 |
| 08087 | CO | Morgan County | 3 | Micropolitan adjacent to a large metro area | 27,171 |
| 08089 | CO | Otero County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 20,311 |
| 08091 | CO | Ouray County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 3,742 |
| 08093 | CO | Park County | 1 | Large-in a metro area with at least 1 million residents or more | 14,523 |
| 08095 | CO | Phillips County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 4,480 |
| 08097 | CO | Pitkin County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 14,872 |
| 08099 | CO | Prowers County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 14,483 |
| 08101 | CO | Pueblo County | 2 | Small-in a metro area with fewer than 1 million residents | 141,472 |
| 08103 | CO | Rio Blanco County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 5,986 |
| 08105 | CO | Rio Grande County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 12,413 |
| 08107 | CO | Routt County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 19,690 |
| 08109 | CO | Saguache County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 5,917 |
| 08111 | CO | San Juan County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 558 |
| 08113 | CO | San Miguel County | 12 | Noncore not adjacent to a metro/micro area and does not contain a town of at least 2,500 residents | 6,594 |
| 08115 | CO | Sedgwick County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 2,747 |
| 08117 | CO | Summit County | 8 | Micropolitan not adjacent to a metro area | 23,548 |
| 08119 | CO | Teller County | 2 | Small-in a metro area with fewer than 1 million residents | 20,555 |
| 08121 | CO | Washington County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 4,926 |
| 08123 | CO | Weld County | 2 | Small-in a metro area with fewer than 1 million residents | 180,936 |
| 08125 | CO | Yuma County | 11 | Noncore not adjacent to a metro/micro area and contains a town of 2,500 or more residents | 9,841 |
