New York - Area of significance: Architecture
| Hornell Armory |
| Hornell Public Library |
| Horr, Elijah, House |
| Horseheads 1855 Extension Historic District |
| Horton Gristmill |
| Horton, Joseph, House |
| Horton Point Lighthouse |
| Horton, Webb, House |
| Hoster, William, House |
| Hotchkiss, Jedediah, House |
| Hotel Albert |
| Hotel Chelsea |
| Hotel Delaware |
| Hotel Gerard |
| Hotel Lafayette |
| Hotel Martinique |
| Hotel Saranac |
| Hotel Syracuse |
| Hotel Theresa |
| Hotel Van Curler |
| Houck Farmhouse |
| Houghtaling, Abraham, House |
| Houghtaling, Peter, Farm and Lime Kiln |
| Houghtaling, Teunis, House |
| Houk Manufacturing Co. |
| House at 103 Roslyn Avenue |
| House at 107 Stroud Street |
| House at 112 Sea Cliff Avenue |
| House at 115 Central Avenue |
| House at 115 South Main Street |
| House at 116 Main Street |
| House at 120 Balcom Road |
| House at 137 Prospect Avenue |
| House at 146 East 38th St. |
| House at 15 East Cayuga Street |
| House at 173 Sixteenth Avenue |
| House at 175 Belden Street |
| House at 176 Prospect Avenue |
| House at 17 Aurora Street |
| House at 17 West 16th Street |
| House at 184 Albany Avenue |
| House at 18 Aurora Street |
| House at 18 Seventeenth Avenue |
| House at 195 Prospect Avenue |
| House at 199 Prospect Avenue |
| House at 19 Locust Place |
| House at 200 Bay Avenue |
| House at 203 East 29 Street |
| House at 203 Prince Street |
| House at 205 North Main Street |
| House at 207 Carpenter Avenue |
| House at 20 Aurora Street |
| House at 20 West 16th St. |
| House at 216 Warren Street |
| House at 218 Dearborn Street |
| House at 21 West Cayuga Street |
| House at 226 West Penn Street |
| House at 233 James Street |
| House at 235-237 Reynolds Street |
| House at 240 Sea Cliff Avenue |
| House at 244 Park Avenue |
| House at 249 Main Street |
| House at 251 Rocklyn Avenue |
| House at 272 Albany Avenue |
| House at 285 Sea Cliff Avenue |
| House at 288 Wimbledon Road |
| House at 313 Albany Avenue |
| House at 313 North Main Street |
| House at 31 West Cayuga Street |
| House at 322 Albany Avenue |
| House at 326 North Peterboro Street |
| House at 328 North Peterboro Street |
| House at 332 Franklin Avenue |
| House at 352 Piermont Avenue |
| House at 356 Albany Avenue |
| House at 362 Sea Cliff Avenue |
| House at 36 South Main Street |
| House at 378 Glen Avenue |
| House at 37 Center Street |
| House at 37 East 4th Street |
| House at 37 West Cayuga Street |
| House at 3 Crown Street |
| House at 461 Spruce Lake Road |
| House at 46 South Main Street |
| House at 474 Ocean Avenue |
| House at 49 East 80th Street |
| House at 51 Market St. |
| House at 520 Hostageh Road |
| House at 52 Eighteenth Avenue |
| House at 52 Frost Mill Road |
| House at 56 Cornelia Street |
| House at 58 Eighteenth Avenue |
| House at 5910 Amboy Road |
| House at 65 Twentieth Avenue |
| House at 73 Grove Street |
| House at 8 Berkley Drive |
| House at 9 Locust Place |
| House at New Forge |
| House at No. 13 Grove Street |
| House at No. 176 South Main Street |
Data from United States Park Service and Wikidata
