First Security Banks was founded in 1907 as the First National Bank of Mackinaw. Branches were added in Heritage Lake in 1998, Deer Creek in 2002, and Danvers in 2008. The bank offers a full menu of financial services, including commercial, agriculture, and consumer loans, all types of savings and checking accounts, investment services, on-line and mobile banking, and four full service branches with 24 hour ATM's at each location.