Larimer County, CO Banks Fort CollinsGuaranty Bank and Trust Companyp: (970) 267-6877 1550 East Harmony RoadFort Collins, CO LovelandGuaranty Bank and Trust Companyp: (970) 267-6844 3151 North Garfield AvenueLoveland, CO 80538Guaranty Bank and Trust Companyp: 970-267-6844 3151 North Garfield AvenueLoveland, CO 80538