| Cottage Grove | 1990 | Census 1990 | Single-Family Detached | 6322 |
| Cottage Grove | 2000 | Census 2000 | Single-Family Detached | 8610 |
| Cottage Grove | 2010 | Estimates 2010 | Single-Family Detached | 9839 |
| Cottage Grove | 2020 | Estimates 2020 | Single-Family Detached | 10982 |
| Cottage Grove | 2022 | Estimates 2022 | Single-Family Detached | 11625 |
| Cottage Grove | 1990 | Census 1990 | Townhomes (single-family attached) | 289 |
| Cottage Grove | 2000 | Census 2000 | Townhomes (single-family attached) | 571 |
| Cottage Grove | 2010 | Estimates 2010 | Townhomes (single-family attached) | 1209 |
| Cottage Grove | 2020 | Estimates 2020 | Townhomes (single-family attached) | 1414 |
| Cottage Grove | 2022 | Estimates 2022 | Townhomes (single-family attached) | 1651 |
| Cottage Grove | 1990 | Census 1990 | Duplex, triplex and quad | 134 |
| Cottage Grove | 2000 | Census 2000 | Duplex, triplex and quad | 160 |
| Cottage Grove | 2010 | Estimates 2010 | Duplex, triplex and quad | 196 |
| Cottage Grove | 2020 | Estimates 2020 | Duplex, triplex and quad | 12 |
| Cottage Grove | 2022 | Estimates 2022 | Duplex, triplex and quad | 12 |
| Cottage Grove | 1990 | Census 1990 | Multifamily (5 units or more) | 275 |
| Cottage Grove | 2000 | Census 2000 | Multifamily (5 units or more) | 580 |
| Cottage Grove | 2010 | Estimates 2010 | Multifamily (5 units or more) | 755 |
| Cottage Grove | 2020 | Estimates 2020 | Multifamily (5 units or more) | 931 |
| Cottage Grove | 2022 | Estimates 2022 | Multifamily (5 units or more) | 1051 |
| Cottage Grove | 1990 | Census 1990 | Manufactured Home | 18 |
| Cottage Grove | 2000 | Census 2000 | Manufactured Home | 99 |
| Cottage Grove | 2010 | Estimates 2010 | Manufactured Home | 103 |
| Cottage Grove | 2020 | Estimates 2020 | Manufactured Home | 106 |
| Cottage Grove | 2022 | Estimates 2022 | Manufactured Home | 103 |
| Cottage Grove | 1990 | Census 1990 | Other (Boat, RV, etc.) | 67 |
| Cottage Grove | 2000 | Census 2000 | Other (Boat, RV, etc.) | 0 |
| Cottage Grove | 2010 | Estimates 2010 | Other (Boat, RV, etc.) | 0 |
| Cottage Grove | 2020 | Estimates 2020 | Other (Boat, RV, etc.) | 0 |
| Cottage Grove | 2022 | Estimates 2022 | Other (Boat, RV, etc.) | 0 |
| Cottage Grove | 2020 | Estimates 2020 | Accessory Dwelling Unit | 0 |
| Cottage Grove | 2022 | Estimates 2022 | Accessory Dwelling Unit | 0 |