Baker Petrolite Chemicals Highway 222 E O Brien, TX 79539 Phone : (940) 658-3574 Obrien Middle School 711 9th St O Brien, TX 79539 Phone : (940) 657-3731 First Baptist Church Of Obrien 902 Grand Central Ave O Brien, TX 79539 Phone : (940) 658-3553 First Baptist Chr-obrien 904 Grand Central Ave O Brien, TX 79539 Phone : (940) 658-3725 Post Office - O Brien 601 9th St O Brien, TX 79539 Phone : (940) 658-3108 Obrien Co-operative Gin Co 706 Grand Central O Brien, TX 79539 Phone : (940) 658-3631