| Mahtomedi | 1990 | Census 1990 | Single-Family Detached | 1745 |
| Mahtomedi | 2000 | Census 2000 | Single-Family Detached | 2189 |
| Mahtomedi | 2010 | Estimates 2010 | Single-Family Detached | 2291 |
| Mahtomedi | 2020 | Estimates 2020 | Single-Family Detached | 2549 |
| Mahtomedi | 2025 | Estimates 2025 | Single-Family Detached | 2577 |
| Mahtomedi | 1990 | Census 1990 | Townhomes (single-family attached) | 70 |
| Mahtomedi | 2000 | Census 2000 | Townhomes (single-family attached) | 172 |
| Mahtomedi | 2010 | Estimates 2010 | Townhomes (single-family attached) | 237 |
| Mahtomedi | 2020 | Estimates 2020 | Townhomes (single-family attached) | 286 |
| Mahtomedi | 2025 | Estimates 2025 | Townhomes (single-family attached) | 286 |
| Mahtomedi | 1990 | Census 1990 | Duplex, triplex and quad | 60 |
| Mahtomedi | 2000 | Census 2000 | Duplex, triplex and quad | 68 |
| Mahtomedi | 2010 | Estimates 2010 | Duplex, triplex and quad | 87 |
| Mahtomedi | 2020 | Estimates 2020 | Duplex, triplex and quad | 36 |
| Mahtomedi | 2025 | Estimates 2025 | Duplex, triplex and quad | 36 |
| Mahtomedi | 1990 | Census 1990 | Multifamily (5 units or more) | 21 |
| Mahtomedi | 2000 | Census 2000 | Multifamily (5 units or more) | 138 |
| Mahtomedi | 2010 | Estimates 2010 | Multifamily (5 units or more) | 295 |
| Mahtomedi | 2020 | Estimates 2020 | Multifamily (5 units or more) | 415 |
| Mahtomedi | 2025 | Estimates 2025 | Multifamily (5 units or more) | 525 |
| Mahtomedi | 1990 | Census 1990 | Manufactured Home | 0 |
| Mahtomedi | 2000 | Census 2000 | Manufactured Home | 0 |
| Mahtomedi | 2010 | Estimates 2010 | Manufactured Home | 0 |
| Mahtomedi | 2020 | Estimates 2020 | Manufactured Home | 0 |
| Mahtomedi | 2025 | Estimates 2025 | Manufactured Home | 0 |
| Mahtomedi | 1990 | Census 1990 | Other (Boat, RV, etc.) | 2 |
| Mahtomedi | 2000 | Census 2000 | Other (Boat, RV, etc.) | 0 |
| Mahtomedi | 2010 | Estimates 2010 | Other (Boat, RV, etc.) | 0 |
| Mahtomedi | 2020 | Estimates 2020 | Other (Boat, RV, etc.) | 0 |
| Mahtomedi | 2025 | Estimates 2025 | Other (Boat, RV, etc.) | 0 |
| Mahtomedi | 2020 | Estimates 2020 | Accessory Dwelling Unit | 2 |
| Mahtomedi | 2025 | Estimates 2025 | Accessory Dwelling Unit | 3 |