| Address | Property Name | Parcel ID |
| 2 Elm Street, Ansonia, CT | n/a | 4800190000 |
| 4 Elm Street, Ansonia, CT | n/a | 4800150000 |
| 5 Elm Street, Ansonia, CT | Sheldon Curtiss House | 4800200000 |
| 7 Elm Street, Ansonia, CT | n/a | 4800210000 |
| 9 Elm Street, Ansonia, CT | n/a | 4800220000 |
| 12 Elm Street, Ansonia, CT | n/a | 4800140000 |
| 13 Elm Street, Ansonia, CT | Capt. Joseph Riggs | 4800230000 |
| 18 Elm Street, Ansonia, CT | n/a | 4800130000 |
| 19 Elm Street, Ansonia, CT | Reamer House | 480023000A |
| 20 Elm Street, Ansonia, CT | n/a | 480012001A |
| 21 Elm Street, Ansonia, CT | n/a | 4800240000 |
| 22 Elm Street, Ansonia, CT | Lambert House | 4800120000 |
| 23 Elm Street, Ansonia, CT | n/a | 4800250000 |
| 25 Elm Street, Ansonia, CT | n/a | 4800400000 |
| 28 Elm Street, Ansonia, CT | n/a | 4800120001 |
| 34 Elm Street, Ansonia, CT | n/a | 4800110000 |
| 35 Elm Street, Ansonia, CT | n/a | 4800410000 |
| 36 Elm Street, Ansonia, CT | Old Town Burying Ground | 4800100000 |
| 37 Elm Street, Ansonia, CT | Gen. David Humphreys House | 4800420000 |
| 39 Elm Street, Ansonia, CT | n/a | 4800440000 |
| 46 Elm Street, Ansonia, CT | n/a | 4800090000 |
| 47 Elm Street, Ansonia, CT | n/a | 4800450000 |
| 48 Elm Street, Ansonia, CT | n/a | 2800220000 |
| 49 Elm Street, Ansonia, CT | n/a | 4800460000 |
| 50 Elm Street, Ansonia, CT | n/a | 2800230000 |
| 51 Elm Street, Ansonia, CT | n/a | 4800480000 |
| 53 Elm Street, Ansonia, CT | n/a | 4800490000 |
| 54 Elm Street, Ansonia, CT | n/a | 2800240000 |
| 59 Elm Street, Ansonia, CT | n/a | 4800500000 |
| 60 Elm Street, Ansonia, CT | n/a | 2800250000 |
| 61 Elm Street, Ansonia, CT | n/a | 2800280000 |
| 62 Elm Street, Ansonia, CT | n/a | 2800260000 |
| 65 Elm Street, Ansonia, CT | Batcher | 4900010000 |
| 70 Elm Street, Ansonia, CT | n/a | 2800270000 |
| 71 Elm Street, Ansonia, CT | Joseph Humphreys House | 2700030000 |
| 74 Elm Street, Ansonia, CT | Joseph Smith House | 2800140000 |
| 75 Elm Street, Ansonia, CT | n/a | 2700020000 |
| 37/1 Elm Street, Ansonia, CT | n/a | 4800430000 |
| 79 Elm Street, Ansonia, CT | Joseph Howell/ Silas Baldwin House | 2700010000 |