Milky Way Planner has pages for 18 dark sky places in Texas: 8 parks, 7 communities, 2 sanctuaries and 1 urban night sky place. Their Bortle classes run from 1 to 9. Each page has the Bortle class, the best months for the Milky Way and a free visibility calendar.
Community · Bortle 8
Park · Bortle 1
Park · Bortle 4
Sanctuary · Bortle 1
Community · Bortle 6
Park · Bortle 4
Sanctuary · Bortle 2
Park · Bortle 4
Community · Bortle 6
Community · Bortle 6
Community · Bortle 8
Community · Bortle 9
Park · Bortle 6
Park · Bortle 7
Urban night sky place · Bortle 8
Park · Bortle 4
Park · Bortle 2
Community · Bortle 7