| Forest Lake | 1990 | Census 1990 | Single-Family Detached | 3338 |
| Forest Lake | 2000 | Census 2000 | Single-Family Detached | 4080 |
| Forest Lake | 2010 | Estimates 2010 | Single-Family Detached | 5072 |
| Forest Lake | 2020 | Estimates 2020 | Single-Family Detached | 5827 |
| Forest Lake | 2023 | Estimates 2023 | Single-Family Detached | 5907 |
| Forest Lake | 1990 | Census 1990 | Townhomes (single-family attached) | 134 |
| Forest Lake | 2000 | Census 2000 | Townhomes (single-family attached) | 207 |
| Forest Lake | 2010 | Estimates 2010 | Townhomes (single-family attached) | 1068 |
| Forest Lake | 2020 | Estimates 2020 | Townhomes (single-family attached) | 1040 |
| Forest Lake | 2023 | Estimates 2023 | Townhomes (single-family attached) | 1061 |
| Forest Lake | 1990 | Census 1990 | Duplex, triplex and quad | 136 |
| Forest Lake | 2000 | Census 2000 | Duplex, triplex and quad | 215 |
| Forest Lake | 2010 | Estimates 2010 | Duplex, triplex and quad | 187 |
| Forest Lake | 2020 | Estimates 2020 | Duplex, triplex and quad | 84 |
| Forest Lake | 2023 | Estimates 2023 | Duplex, triplex and quad | 96 |
| Forest Lake | 1990 | Census 1990 | Multifamily (5 units or more) | 923 |
| Forest Lake | 2000 | Census 2000 | Multifamily (5 units or more) | 939 |
| Forest Lake | 2010 | Estimates 2010 | Multifamily (5 units or more) | 1062 |
| Forest Lake | 2020 | Estimates 2020 | Multifamily (5 units or more) | 1471 |
| Forest Lake | 2023 | Estimates 2023 | Multifamily (5 units or more) | 1808 |
| Forest Lake | 1990 | Census 1990 | Manufactured Home | 202 |
| Forest Lake | 2000 | Census 2000 | Manufactured Home | 153 |
| Forest Lake | 2010 | Estimates 2010 | Manufactured Home | 120 |
| Forest Lake | 2020 | Estimates 2020 | Manufactured Home | 147 |
| Forest Lake | 2023 | Estimates 2023 | Manufactured Home | 134 |
| Forest Lake | 1990 | Census 1990 | Other (Boat, RV, etc.) | 20 |
| Forest Lake | 2000 | Census 2000 | Other (Boat, RV, etc.) | 0 |
| Forest Lake | 2010 | Estimates 2010 | Other (Boat, RV, etc.) | 0 |
| Forest Lake | 2020 | Estimates 2020 | Other (Boat, RV, etc.) | 0 |
| Forest Lake | 2023 | Estimates 2023 | Other (Boat, RV, etc.) | 0 |
| Forest Lake | 2020 | Estimates 2020 | Accessory Dwelling Unit | 0 |
| Forest Lake | 2023 | Estimates 2023 | Accessory Dwelling Unit | 0 |