| Castro County Texas Cities/Towns - Dimmitt (County Seat), Hart, Nazareth, Summerfield |
![]() ![]() |
![]() Your Ad Here Castro County is a county located in the U.S. state of Texas. As of 2000, its population was 8,285. The seat of the county is Dimmitt. History It is named for Henri Castro, who was consul general to France for the Republic of Texas and founder of a colony in Texas. |