Plum Grove, Texas, a City, in Liberty County spans over 7.3 square miles and has a population of 930 citizen.  Plum Grove is at the junction of Farm roads 2090 and 1010, forty miles northeast of Houston in northwestern Liberty County. It was incorporated by a 55–7 vote in December 1968 and secured a voting precinct 5½ years later.


Monthly meetings are held the second Monday of each month