Martin Senior Service Center Address: 400 Walker St, Trinity, TX 75862 Phone: (936) 594-2625 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm County Government, Senior Citizens Service Other Businesses: White Rock City Marina at 819 White Rock Acres, Trinity, TX 75862 Hines, Travis N at 100 Elm Dr, Trinity, TX 75862 Elroy Icehouse at 266 Bells Camp Rd, Trinity, TX 75862