Texanna is located at 35°21'3" North, 95°31'57" West (35.350928, -95.532556).
According to the United States Census Bureau, the city has a total area of 40.04 mi2 (103.70 km2). 39.94 mi2 (103.44 km2) of it is land and 0.10 mi2 (0.26 km2) of it is covered by water. The total area is 0.25% water.
Texanna is located in the Central Standard Time (CST) timezone, GMT-06:00. It observes Daylight Saving Time (DST).