07: Where can I drop off my mail-in ballot in person within San Patricio County in Texas?Source: http://www.co.san-patricio.tx.us/page/sanpatricio.elections410 W Market St. , Sinton, Texas 78387 ← 07: Where can I drop off my mail-in ballot in person within Panola County in Texas? → 07: Where can I drop off my mail-in ballot in person within Stonewall County in Texas?