List of GPS satellites Satellites by block Satellites by block

| Block | Launched | Operational | Not_usable | Retired | Launch_Failures |
|---|---|---|---|---|---|
| Block I | 11 | 0 | 0 | 10 | 1 |
| Block II | 9 | 0 | 0 | 9 | 0 |
| Block IIA | 19 | 8 | 1 | 10 | 0 |
| Block IIR | 13 | 12 | 0 | 0 | 1 |
| Block IIRM | 8 | 7 | 0 | 1 | 0 |
| Block IIF | 4 | 4 | 0 | 0 | 0 |
| Total | 64 | 31 | 1 | 30 | 2 |