Regions Bank - Sienna Plantation Share: BanksFinancial Services Regions Bank - Sienna Plantation Visit Website 9129 hwy. 6 Missouri City, TX 77459 (832) 899-3040 About Map About Regions is a member of the S&P 500 Index and is one of the nation's largest full-service providers of consumer and commercial banking, wealth management and mortgage products and services. What's Nearby? Distance: 5 10 15 20 25 50 mi.