State Capital: Denver
Population (2000): 4,301,261
Area Codes: 720, 303, 719, 970
Weather
| Average Highs | Year | Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec | |
| Aspen | °F | 40 | 20 | 22 | 29 | 39 | 48 | 56 | 62 | 60 | 53 | 44 | 30 | 23 |
| °C | 6 | -6 | -5 | -1 | 4 | 8 | 13 | 16 | 15 | 11 | 6 | 0 | -5 | |
| Boulder | °F | 51 | 33 | 34 | 39 | 48 | 56 | 66 | 72 | 71 | 63 | 52 | 41 | 34 |
| °C | 10 | 0 | 1 | 4 | 9 | 13 | 18 | 22 | 21 | 17 | 10 | 5 | 1 | |
| Colorado Springs | °F | 49 | 29 | 32 | 39 | 47 | 55 | 66 | 71 | 69 | 61 | 50 | 37 | 30 |
| °C | 9 | -1 | 0 | 3 | 8 | 12 | 18 | 21 | 20 | 16 | 10 | 2 | -1 | |
| Denver | °F | 51 | 30 | 34 | 39 | 48 | 58 | 68 | 73 | 72 | 63 | 52 | 39 | 32 |
| °C | 10 | -1 | 1 | 3 | 8 | 14 | 20 | 22 | 22 | 17 | 11 | 3 | 0 | |
| Steamboat Springs | °F | 38 | 14 | 19 | 27 | 38 | 48 | 55 | 61 | 60 | 52 | 42 | 28 | 17 |
| °C | 3 | -10 | -7 | -2 | 3 | 8 | 12 | 16 | 15 | 11 | 5 | -2 | -8 | |
| State Guides | ||
| Colorado | 800-COLORADO | |
| City Guides | ||
| Alamosa | 800-BLU-SKYS | |
| Boulder | ||
| Breckenridge | 970-453-6018 | |
| Colorado Springs | 877-745-3773 | |
| Denver | 800-462-5280 | |
| Estes Park | ||
| Fort Collins | 800-274-FORT | |
| Georgetown | ||
| Grand Junction | 800-962-2547 | |
| Greeley | 800-449-3866 | |
| Manitou Springs | 800-642-2567 | |
| Ouray | 800-228-1876 | |
| Pagosa Springs | 800-252-2204 | |
| Pueblo | ||
| Silverton | 800-752-4494 | |
| Steamboat Springs | ||
| Telluride | ||
| Telluride | ||
| Vail | ||
| County Guides | ||
| Chaffee
County Buena Vista, Poncha Springs, Salida |
800-831-8594 | |
| Clear
Creek County |
800-88-BLAST | |
| Grand
County |
800-247-2636 | |
| Gunnison
County |
800-323-2453 | |
| Moffat County | 866-332-8438 | |
| Region Guides | ||
| Mesa Verde Country | 800-253-1616 | |
| Pikes Peak Country | ||
| Attractions | ||
| Alpine Funtier | Fort Collins | 970-669-4100 |
| Butterfly Pavilion & Insect Center | Westminster | 303-469-5441 |
| Colorado's Ocean Journey | Denver | 888-561-4450 |
| Colorado State Fair | Pueblo | 800-876-4567 |
| Denver Botanic Gardens | Denver | 303-331-4000 |
| Dinosaur Ridge | Morrison | 303-697-DINO |
| Discovery Science Center | Fort Collins | 970-472-3990 |
| Durango and Silverton Narrow Gauge Railroad | Durango | 888-TRAIN-07 |
| Gateway Park Fun Center | Boulder & Evans | 303-442-4386 |
| Mesa Verde National Park | Mancos | 800-449-2288 |
| Museo de las Américas | Denver | 303-571-4401 |
| Red Rocks Amphitheatre | Morrison | |
| Royal Gorge Bridge & Park | Cañon City | 888-333-5597 |
| Colorado Avalanche | Denver | 303-405-1111 |
| Colorado Rapids | Denver | 800-844-7777 |
| Colorado Rockies | Denver | 303-ROCKIES |
| Denver Broncos | Denver | |