| Balloon Farm | Frankfort | Building | 1998 |
| Big Moose Community Chapel | Eagle Bay | Building | 2012 |
| Blatchley House | Jordanville | Building | 2008 |
| Bonfoy-Barstow House | West Winfield | Building | 2011 |
| Bowen, Benjamin, House | Newport | Building | 1998 |
| Brace Farm | Meetinghouse Green | District | 2013 |
| Breckwoldt-Ward House | Dolgeville | Building | 2005 |
| Camp Veery | Eagle Bay | Building | 2023 |
| Case, James H., III and Laura Rockefeller Case, House | Van Hornesville | Building | 2019 |
| Cedar Lake Methodist Episcopal Church | Cedar Lake | Building | 2020 |
| Church of the Good Shepherd | Cullen | Building | 1997 |
| Cold Brook Feed Mill | Cold Brook | Building | 1974 |
| Covewood Lodge | Big Moose | Building | 2004 |
| Dolge, Alfred, Hose Co. No. 1 Building | Dolgeville | Building | 1994 |
| Dolgeville Universalist Church | Dolgeville | Building | 2024 |
| Emmanuel Episcopal Church | Little Falls | Building | 2009 |
| First United Methodist Church | Ilion | Building | 2003 |
| Fort Herkimer Church | East Herkimer | Building | 1972 |
| Frankfort Hill District Number 10 School | Frankfort Hill | Building | 2011 |
| Frankfort Town Hall | Frankfort | Building | 1999 |
| Frisbie, Augustus, House | Salisbury Center | Building | 1999 |
| Goodsell House | Old Forge | Building | 2006 |
| H.M. Quackenbush Factory | Herkimer | Building | 2022 |
| Herkimer County Courthouse | Herkimer | Building | 1972 |
| Herkimer County Historical Society | Herkimer | Building | 1972 |
| Herkimer County Jail | Herkimer | Building | 1972 |
| Herkimer County Trust Company Building | Little Falls | Building | 1970 |
| Herkimer House | Danube | Building | 1971 |
| Hildreth Homestead | Herkimer | Building | 2020 |
| Holy Trinity Monastery | Jordanville | District | 2011 |
| Indian Castle Church | Indian Castle | Building | 1971 |
| Italian Community Bake Oven | Little Falls | Structure | 2006 |
| Jordanville Public Library | Jordanville | Building | 1984 |
| Keith, James, House and Brown-Morey-Davis Farm | Newport | Building | 2014 |
| Lalino Stone Arch Bridge | Middleville | Structure | 2001 |
| Library Bureau-Remington Rand-Sperry UNIVAC Manufacturing Complex | Ilion | District | 2021 |
| Little Falls City Hall | Little Falls | Building | 2011 |
| Little Falls Historic District | Little Falls | District | 2012 |
| Masonic Temple-Newport Lodge No. 445 F. & A.M. | Newport | Building | 2010 |
| Meetinghouse Green Road Cemetery | Meetinghouse Green | Site | 2013 |
| Menge House Complex | Dolgeville | Building | 1996 |
| Mohawk Upper Castle Historic District NHL | Danube | District | 1993 |
| Newport Stone Arch Bridge | Newport | Structure | 1992 |
| Norway Baptist Church (former) | Norway | Building | 2007 |
| Oak Hill Cemetery | Herkimer | District | 2013 |
| Old City Road Stone Arch Bridge | Welch Corners | Structure | 2001 |
| Overlook | Little Falls | Building | 2010 |
| Palatine German Frame House | Herkimer | Building | 2004 |
| Perry, Stuart and William Swezey Houses | Newport | Building | 2012 |
| Reformed Church, The | Herkimer | Building | 1972 |
| Remington House | Kinne Corners | Building | 1997 |
| Remington Stables | Ilion | Building | 1976 |
| Rice-Dodge-Burgess Farm | Cedarville | District | 2015 |
| Richardson, Thomas, House | Ilion | Building | 1984 |
| Route 29 Stone Arch Bridge | Middleville | Structure | 2001 |
| Russia Corners Historic District | Russia | District | 1996 |
| Salisbury Center Covered Bridge | Salisbury Center | Structure | 1972 |
| Salisbury Center Grange Hall | Salisbury Center | Building | 1999 |
| Sanders, James, House | Little Falls | Building | 2006 |
| Snells Bush Church and Cemetery | Manheim | Building | 2004 |
| South Ann Street-Mill Street Historic District | Little Falls | District | 2008 |
| Stillwater Mountain Fire Observation Station | Webb | Structure | 2017 |
| Sunset Hill | Warren | Building | 2007 |
| Thendara Historic District | Old Forge | District | 2010 |
| Trinity Episcopal Church-Fairfield | Fairfield | Building | 1993 |
| US Post Office-Dolgeville | Dolgeville | Building | 1988 |
| US Post Office-Frankfort | Frankfort | Building | 1989 |
| US Post Office-Herkimer | Herkimer | Building | 1989 |
| US Post Office-Ilion | Ilion | Building | 1989 |
| US Post Office-Little Falls | Little Falls | Building | 1989 |
| Van Slyke House | German Flatts | Building | 2021 |
| West Winfield Historic District | Winfield | District | 2026 |
| Yale-Cady Octagon House and Yale Lock Factory Site | Newport | Building | 2007 |
| Zoller-Frasier Round Barn | Newville | Building | 1984 |
Mohawk Upper Castle Historic District NHL Danube · District · listed 1993 
Balloon Farm Frankfort · Building · listed 1998 
Big Moose Community Chapel Eagle Bay · Building · listed 2012 
Bonfoy-Barstow House West Winfield · Building · listed 2011 
Bowen, Benjamin, House Newport · Building · listed 1998 
Breckwoldt-Ward House Dolgeville · Building · listed 2005 
Church of the Good Shepherd Cullen · Building · listed 1997 
Cold Brook Feed Mill Cold Brook · Building · listed 1974 
Dolge, Alfred, Hose Co. No. 1 Building Dolgeville · Building · listed 1994 
Emmanuel Episcopal Church Little Falls · Building · listed 2009