Area Code 970-591 located in LARIMER, LARIMER, CO, more detail is as below. Place NPA (Numbering Plan Area) : 970 NXX (Local Number Prefix) : 591 City : LARIMER County : LARIMER State : CO (Colorado) NXX Intro Version : 4/10/2013 Rate Center : ESTES PARK ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 970591 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : PEERLESS NETWORK OF COLORADO, LLC - CO OCN (Operating Company Number) : 278F Latitude : None Longitude : None ‹ previous : 970-590 next › : 970-592 Telephone Number List 970-591-0000 ~ 970-591-9999