| | | Clear Creek County | CO | 08019 | | Denver-Aurora-Centennial,
CO 19740 | Denver-Aurora-Greeley, CO 216 | Outlying | metro county (urban) | mining-dependent | https://maps.google.com/?q=ClearCreekCounty+CO |
| | | Conejos County | CO | 08021 | | Alamosa, CO 10480 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=ConejosCounty+CO |
| | | Costilla County | CO | 08023 | | Alamosa, CO 10480 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CostillaCounty+CO |
| | | Crowley County | CO | 08025 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=CrowleyCounty+CO |
| | | Custer County | CO | 08027 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=CusterCounty+CO |
| | | Delta County | CO | 08029 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=DeltaCounty+CO |
| | | Denver County | CO | 08031 | | Denver-Aurora-Centennial,
CO 19740 | Denver-Aurora-Greeley, CO 216 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=DenverCounty+CO |
| | | Dolores County | CO | 08033 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=DoloresCounty+CO |
| | | Douglas County | CO | 08035 | | Denver-Aurora-Centennial,
CO 19740 | Denver-Aurora-Greeley, CO 216 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=DouglasCounty+CO |
| | | Eagle County | CO | 08037 | | Edwards, CO 20780 | Edwards-Rifle, CO 233 | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=EagleCounty+CO |
