| District of Colorado area codes: 970 | |
|---|---|
| Country | United States |
| State/Province | Colorado |
| Major City | Ft Collins |
| Time Zone | Mountain |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 970-346 | Weld | Greeley, CO | Qwest Corporation |
| 970-347 | Weld | Greeley, CO | Qwest Corporation |
| 970-348 | Weld | Greeley, CO | Qwest Corporation |
| 970-349 | Gunnison | Crested Butte, CO | Qwest Corporation |
| 970-350 | Weld | Greeley, CO | Qwest Corporation |
| 970-351 | Weld | Greeley, CO | Qwest Corporation |
| 970-352 | Weld | Greeley, CO | Qwest Corporation |
| 970-353 | Weld | Greeley, CO | Qwest Corporation |
| 970-354 | Yuma | Idalia, CO | Plains Cooperative Telephone Association |
| 970-355 | Garfield | Glenwood Springs, CO | T-mobile Usa |
| 970-356 | Weld | Greeley, CO | Qwest Corporation |
| 970-357 | Washington | Cope, CO | Plains Cooperative Telephone Association |
| 970-358 | Yuma | Joes, CO | Plains Cooperative Telephone Association |
| 970-359 | Yuma | Eckley, CO | Plains Cooperative Telephone Association |
| 970-360 | Yuma | Yuma, CO | 360networks (usa) Inc. |
| 970-361 | Mesa | Grand Jct, CO | AT&T Local |
| 970-362 | Yuma | Kirk, CO | Plains Cooperative Telephone Association |
| 970-363 | Grand | Granby, CO | Level 3 Communications |
| 970-364 | Grand | Granby, CO | Level 3 Communications |
| 970-365 | Moffat | Maybell, CO | Union Telephone Co. - WY |
There are 600 prefixes, In the code area, the major cities are Fort Collins, CO;Grand Junction, CO;Greeley, CO;Lo. The major city is Ft Collins.