San Patricio County Tax Office Share: Local / State / Federal Government San Patricio County Tax Office Visit Website Request Info 1301 E Sinton St Suite C Sinton, TX 78387 (361) 364-9374 www.co.san-patricio.tx.us Hours: 8:00am - 4:30pm Monday thru Friday Map What's Nearby? Distance: 5 10 15 20 25 50 mi.