| Type: | town |
| Castra | |
| State: | tas |
| Postcode: | 7315 |
| Region: | North-west and west |
| Location1: | Ulverstone |
| Dist1: | 19 |
| Dir1: | S |
| Lga: | Central Coast |
| Stategov: | Braddon |
| Fedgov: | Braddon |
| Near-Nw: | Preston |
| Near-N: | Preston, Sprent, Gawler |
| Near-Ne: | Sprent |
| Near-E: | Upper Castra, Sprent |
| Near-W: | Preston |
| Near-Sw: | Preston |
| Near-S: | Upper Castra |
| Near-Se: | Upper Castra |
Castra is a rural locality in the local government area (LGA) of Central Coast in the North-west and west LGA region of Tasmania. The locality is about south of the town of Ulverstone. The 2021 census recorded a population of 41 for Castra.
Castra is a confirmed locality.[1]
Most of the boundaries are survey lines.
Route C124 (Central Castra Road) passes through from north to south.[1] [2]