Advocate | connect | grow Prosperity Bank Pin Oak Banks/Credit Unions/Financial Institutions Visit Website 550 Pin Oak Katy, TX 77494 (713) 666-2511 (281) 391-1079 (fax) Hours: Monday - Thursday - 9:00 AM to 4:00 PM Friday - 9:00 AM to 6:00 PM Sat - 9:00 AM to 1 PM About Map About At Prosperity we believe that ''Real Bankers'' and not just a bank make the difference! Directions Located North of 1-10 in old town Katy. What's Nearby? Distance: 5 10 15 20 25 50 mi.