reagan1k--A sub-adult bear is one that has been kicked off mama, but less than 4 years old. These particular bears are rarely, if ever, a true safety concern. But, they account for the vast majority of nuisance issues (general mischief around campsites).
By close, since 2011, there have been random sightings in Kerr (bear actually killed), Kimble and Menard counties. These are still isolated enough events that I wouldn't particularly think about them. On their own (due to the way they disperse from their mother), it will be a long time before we see many bears outside of the Big Bend area (actual breeding population). The bears in NE Texas are almost always lone, sub-adult males. Or we could follow the Arkansas model (cluster of ~3 sows scattered 25-50 miles apart), and we could have bears out the ying yang in about 5-10 years. Politically, in Texas, that isn't going to happen. Granted, there are folk in Red River County that will tell you that TPWD is flying in bears at night with black helicopters (not kidding). If we are, it is the worst reintroduction effort known to man,