| Stillwater Township | 1990 | Census 1990 | Single-Family Detached | 626 |
| Stillwater Township | 2000 | Census 2000 | Single-Family Detached | 821 |
| Stillwater Township | 2010 | Estimates 2010 | Single-Family Detached | 874 |
| Stillwater Township | 2020 | Estimates 2020 | Single-Family Detached | 740 |
| Stillwater Township | 2021 | Estimates 2021 | Single-Family Detached | 740 |
| Stillwater Township | 1990 | Census 1990 | Townhomes (single-family attached) | 7 |
| Stillwater Township | 2000 | Census 2000 | Townhomes (single-family attached) | 5 |
| Stillwater Township | 2010 | Estimates 2010 | Townhomes (single-family attached) | 6 |
| Stillwater Township | 2020 | Estimates 2020 | Townhomes (single-family attached) | 0 |
| Stillwater Township | 2021 | Estimates 2021 | Townhomes (single-family attached) | 0 |
| Stillwater Township | 1990 | Census 1990 | Duplex, triplex and quad | 10 |
| Stillwater Township | 2000 | Census 2000 | Duplex, triplex and quad | 11 |
| Stillwater Township | 2010 | Estimates 2010 | Duplex, triplex and quad | 3 |
| Stillwater Township | 2020 | Estimates 2020 | Duplex, triplex and quad | 10 |
| Stillwater Township | 2021 | Estimates 2021 | Duplex, triplex and quad | 10 |
| Stillwater Township | 1990 | Census 1990 | Multifamily (5 units or more) | 6 |
| Stillwater Township | 2000 | Census 2000 | Multifamily (5 units or more) | 0 |
| Stillwater Township | 2010 | Estimates 2010 | Multifamily (5 units or more) | 0 |
| Stillwater Township | 2020 | Estimates 2020 | Multifamily (5 units or more) | 0 |
| Stillwater Township | 2021 | Estimates 2021 | Multifamily (5 units or more) | 0 |
| Stillwater Township | 1990 | Census 1990 | Manufactured Home | 0 |
| Stillwater Township | 2000 | Census 2000 | Manufactured Home | 0 |
| Stillwater Township | 2010 | Estimates 2010 | Manufactured Home | 0 |
| Stillwater Township | 2020 | Estimates 2020 | Manufactured Home | 0 |
| Stillwater Township | 2021 | Estimates 2021 | Manufactured Home | 0 |
| Stillwater Township | 1990 | Census 1990 | Other (Boat, RV, etc.) | 2 |
| Stillwater Township | 2000 | Census 2000 | Other (Boat, RV, etc.) | 0 |
| Stillwater Township | 2010 | Estimates 2010 | Other (Boat, RV, etc.) | 0 |
| Stillwater Township | 2020 | Estimates 2020 | Other (Boat, RV, etc.) | 0 |
| Stillwater Township | 2021 | Estimates 2021 | Other (Boat, RV, etc.) | 0 |
| Stillwater Township | 2020 | Estimates 2020 | Accessory Dwelling Unit | 0 |
| Stillwater Township | 2021 | Estimates 2021 | Accessory Dwelling Unit | 0 |