| 00664354 | Grey Cloud Island Township | 1990 | 2.51 | Census Bureau |
| 00664354 | Grey Cloud Island Township | 2000 | 2.62 | Census Bureau |
| 00664354 | Grey Cloud Island Township | 2010 | 2.52 | Census Bureau |
| 00664354 | Grey Cloud Island Township | 2020 | 2.92 | Census Bureau |
| 00664354 | Grey Cloud Island Township | 2022 | 2.91 | Metropolitan Council Research |