| | Washington County | CO | 08121 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=WashingtonCounty+CO |
| | Yuma County | CO | 08125 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=YumaCounty+CO |
| | Alamosa County | CO | 08003 | | Alamosa, CO 10480 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=AlamosaCounty+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 |
| | Boulder County | CO | 08013 | | Boulder, CO 14500 | Denver-Aurora-Greeley, CO 216 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BoulderCounty+CO |
| | Lake County | CO | 08065 | | Breckenridge, CO 14720 | | Outlying | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=LakeCounty+CO |
| | Summit County | CO | 08117 | | Breckenridge, CO 14720 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=SummitCounty+CO |
| | Fremont County | CO | 08043 | | Cañon City, CO 15860 | Pueblo-Cañon City, CO 444 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=FremontCounty+CO |
| | El Paso County | CO | 08041 | | Colorado Springs, CO 17820 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ElPasoCounty+CO |