See insights on Guaranty Bank including office locations, competitors, revenue, financials, President of Guaranty Bank and Trust Company Brighton, CO, US. $, $, $22, DENVER. Guaranty Bank and. Trust Company. $28, $, $1,, $13, $46, $1,, $1,, Guaranty Bank and Trust Company is located in Adams County of Colorado state. On the street of East Bromley Lane and street number is.