Cost is an unincorporated community in Gonzales County, Texas, United States. According to the Handbook of Texas, the community had an estimated population 62 in 2000.Cost is located at 29°26′15″N 97°31′34″W / 29.43750°N 97.52611°W / 29.43750; -97.52611. It is situated along State Highway 97 in central Gonzales County, approximately six miles southwest of Gonzales.The first shot beginning the war of the Texas Revolution was fired a mile east of Cost on October 2, 1835.Although it is unincorporated, Cost has a post office with the zip code of 78614.Public education in the community of Cost is provided by the Gonzales Independent School District.