Montalba is an unincorporated community in central Anderson County, Texas, United States. It lies along State Highway 19 northwest of the city of Palestine, the county seat of Anderson County. Its elevation is 427 feet (130 m). Although Montalba is unincorporated, it has a post office, with the ZIP code of 75853.Elton Bomer, formerly state representative and Texas Secretary of State, resides in Montalba.