Gamaliel is an unincorporated community in Baxter County, Arkansas, United States. Gamaliel is located along Arkansas Highway 101 12 miles northeast of Mountain Home and 3mi south of the Arkansas?Missouri border. Gamaliel has a post office with ZIP code 72537.Gamaliel is located on a ridge between Bennetts Bayou to the east and the Norfork River/Norfork Lake to the west. Gamaliel campground on the east arm of Norfork Lake is about three miles to the southeast.