Ozona is a census-designated place in the state of Texas. It is the county seat of Crockett County. It is the only settlement in the county that is recognized by the Census Bureau. About 3,225 people lived there in 2010. First named Powell Well for E.M. Powell, a surveyor who made a well and a windmill in 1891. Its name was changed to Ozona because it has much open air or ozone.