| Business | Phone |
| Bunkhouse 1375 S State Highway 237, Round Top 78954 | (979) 249-4294 |
| Creative Restoration Hackberry Hill Farm, Round Top 78954 | (979) 249-5699 |
| Diamond M Properties 2119 N State Highway 237, Round Top 78954 | (979) 249-2191 |
| Johnston & Co Round Top 78954 | (979) 249-3765 |
| Wine Shop At Round Top 202 E Mill St, Round Top 78954 | (979) 249-5067 |
| Triple R Farm Rr 1, Round Top 78954 | (979) 249-3616 |
| Round Top Historical Society 304 N Washington St, Round Top 78954 | (979) 249-5758 |
| Round Top Sub Station Rr, Round Top 78954 | (979) 249-3758 |
| Settlement Round Top 78954 | (979) 249-5015 |