Sienna, TX

Sienna's present name marks a deliberate break with the plantation history of its site. Jonathan D. Waters bought the tract along the Brazos River in 1840 and developed a sugar-and-cotton plantation worked by enslaved people; later owners and a Catholic retreat used the land before large-scale residential planning began. The first homes in the modern community were sold in 1996. Its developer began shortening Sienna Plantation to Sienna in 2019 and was replacing monument signs by 2020, explicitly acknowledging that the former wording could be hurtful. The census-designated area had 20,204 residents in 2020. Much of Sienna lies in Missouri City's extraterritorial jurisdiction rather than within city limits, and current city documents track annexation through agreements with the area's management and municipal utility districts.

The residential associations control access to many of the community's principal recreation sites. Club Sienna combines a water park, tennis facilities, an amphitheater, a fishing dock, and meeting space; Sawmill Lake Club has a pool, fitness center, event rooms, playgrounds, and lakeside gathering areas. Camp Sienna is a 160-acre sports complex with baseball, softball, and soccer fields, courts, playgrounds, and trails toward the Brazos River. Those facilities are reserved for residents and their guests. The Sienna Branch Library provides a public counterpart on Sienna Springs Boulevard, with computers and a 3D printer available to library users. Its 2026 calendar ranged from toddler and preschool storytimes to origami sessions and a senior Wii bowling league.