The following is a list of Michigan State Historic Sites in Allegan County, Michigan. Sites marked with a dagger (†) are also listed on the National Register of Historic Places in Allegan County, Michigan.__TOC__
| width="30%" | Name | width="100px" | Image | Location | width="125px" | City | width="125px" | Listing date | |
|---|---|---|---|---|---|---|---|---|---|
| All Saints Episcopal Church† | 252 Grand Street, southwest corner of Hoffman Street | Saugatuck | |||||||
| Allegan County Informational Designation | 125 Chestnut St | Allegan | |||||||
| Allegan Road Commemorative Designation | River Bluff Park Old Allegan Road | Saugatuck | |||||||
| Castle Park Lodge | 6700 Bryant Avenue, Castle Park | Holland | |||||||
| Church of the Good Shepherd | 101 Walnut Street | Allegan | |||||||
| Clipson Brewery Ice House (Twin Gables Hotel) | 900 Lake Street | Saugatuck | |||||||
| John Crispe House | 404 East Bridge Street | Plainwell | |||||||
| Delano House | 302 Cutler Street | Allegan | |||||||
| Douglas Union School† | 130 Center Street | Douglas | |||||||
| Dutcher Lodge | 86 Center Street | Douglas | |||||||
| Ebenezer Reformed Church Informational Designation | 5166 Ottogan St. | Holland | |||||||
| Dorr E. Felt Mansion† | 6597 138th Ave. | Holland | |||||||
| Fifty-Seventh Street Bridge† | 57th Street over the Kalamazoo River | New Richmond | |||||||
| First Congregational Church | 296 Hoffman | Saugatuck | |||||||
| Francis Metallic Surfboat† | 130 W. Center St. | Douglas | |||||||
| Ganges Fractional District No. 1 School House | 6292 124th Avenue | Fennville | |||||||
| Dr. Asa Goodrich House | 112 Center Street | Douglas | |||||||
| Graafschap Christian Reformed Church | A-621 (48th Avenue) between Graafschap Road and Washington Avenue | Holland | |||||||
| Hacklander Site (20AE78)† | 130th Ave & 63rd ST | Saugatuck Township | |||||||
| Henika Ladies' Library | 149 South Main Street | Wayland | |||||||
| John Butler Johnson House The Porches | 2207 70th Street | Fennville | Demolished 2012 | ||||||
| Harvey Judson Kingsley House | 626 West Main Street | Fennville | |||||||
| Sarah M. Kirby House | 294 West Center Street | Douglas | |||||||
| Laketown Township Hall | A-6280 142nd Avenue | Holland | |||||||
| Hollister F. Marsh Jr. House | 107 Delano Street | Allegan | |||||||
| Horace D. Moore House | 888 Holland Street | Saugatuck | |||||||
| Michigan Paper Company Mill Historic District† | 200 Allegan St. | Plainwell | |||||||
| Old Wing Mission† | 5298 40th Ave. | Holland | |||||||
| Oakland Christian Reformed Church | 4452 38th St. | Hamilton | |||||||
| Otsego Methodist Church | 223 E. Allegan | Otsego | |||||||
| Overisel Reformed Church(demolished) | A-4706 142nd Avenue[1] | Overisel Township | |||||||
| Village of Pier Cove Informational Designation | 2290 Lakeshore Dr. | Fennville | |||||||
| General Benjamin Pritchard House | 330 Davis Street | Allegan | |||||||
| Reed's Livery | 248 Culver St. | Saugatuck | |||||||
| Schriver's Inn (currently used as the Ox-Bow School of Art) | 3435 Rupprecht Way | Saugatuck | |||||||
| Saugatuck Pump House† | 735 Park St. | Saugatuck | |||||||
| Second Street Bridge† | 2nd St. | Allegan | |||||||
| Seventh Day Adventist Church | 229 Cutler Street | Allegan | |||||||
| Singapore Informational Designation | 102 Butler | Saugatuck | |||||||
| Warner P. Sutton House† | 736 Pleasant Street | Saugatuck | |||||||
| Fred Thompson House (William Springer House) | 633 Pleasant | Saugatuck | |||||||
| Orson G. Vahue House | 203 Cutler Street | Allegan |