Chappell Hill is an unincorporated community in the eastern portion of Washington County, Texas, United States. It is located inside Stephen F. Austin's original colony, and the land is some of the oldest Anglo-settled in the state. According to the Handbook of Texas, the community had a population of 600 in 2000. It is located within the Greater Houston metropolitan area. It is home to numerous Texas historic sites and is 17 miles Southwest from the Washington on the Brazos State Historic Site.