The Milam Appraisal District is responsible for the fair market appraisal of properties within each of the following taxing entities:
| Special Districts |
| Donahoe Watershed |
| Elmcreek Watershed |
| Rockdale Hospital District |
| Milam County ESD #1 |
| MUD What is a Municipal Utility District |
| Sandow MUD 1 |
| Sandow MUD 1A |
| Sandow MUD 1B |
| Sandow MUD 1C |