| Year | Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|---|
| 1900 | Duncker, Dorah | Wife | 417 Second St | 42 | White | Germany | Married | None | 
| 1910 | Duncker, Dora | Head | 201 W Railroad Ave | 52 | White | Germany | 1st Marriage | None | 
| 1920 | Duncker, Dora M | Head | 408 Auburn St | 60 | White | Germany | Married | None | 
| 1930 | Duncker, Dora | Mother | 410 Auburn St | 72 | White | Germany | Widowed | None | 
| 1940 | Duncker, Dora | Mother | 109 Hyers St | 82 | White | Germany | Widowed | None | 
| Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|
| Duncker, Fred | Head | 417 Second St | 45 | White | Germany | Married | Cigar Maker | 
| Duncker, Emil | Son | 417 Second St | 19 | White | Germany | Single | Glass Factory | 
| Duncker, Mamie | Daughter | 417 Second St | 16 | White | New York | Single | Servant | 
| Duncker, Martha | Daughter | 417 Second St | 12 | White | New York | Single | At School | 
| Duncker, Lizzie | Daughter | 417 Second St | 8 | White | New York | Single | At School | 
| Duncker, William | Son | 417 Second St | 6 | White | New York | Single | At School | 
| Duncker, Fredrick | Son | 417 Second St | 5 | White | New York | Single | None | 
| Duncker, Louis | Son | 417 Second St | 2 | White | New York | Single | None | 
| Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|
| Duncker, Emil L | Son | 201 W Railroad Ave | 29 | White | Germany | Single | Finisher | 
| Duncker, Mamie | Daughter | 201 W Railroad Ave | 19 | White | New York | Single | Ironer | 
| Duncker, William | Son | 201 W Railroad Ave | 17 | White | New York | Single | Stenographer | 
| Duncker, Fred | Son | 201 W Railroad Ave | 15 | White | New York | Single | None | 
| Duncker, Lewis | Son | 201 W Railroad Ave | 12 | White | New York | Single | None | 
| Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|
| Duncker, Emil L | Son | 408 Auburn St | 39 | White | Germany | Single | Woodworker | 
| Duncker, Frederick R | Son | 408 Auburn St | 23 | White | New York | Single | Bookkeeper | 
| Duncker, Lewis | Son | 408 Auburn St | 21 | White | New York | Single | Lineman | 
| Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|
| Duncker, Emil | Head | 410 Auburn St | 50 | White | Germany | Single | Laborer | 
| Name | Relation to Head | Address | Age | Race | POB | Marriage | Occupation | 
|---|---|---|---|---|---|---|---|
| Duncker, William C | Head | 109 Hyers St | 47 | White | New York | Married | Salesman | 
| Duncker, Eida | Wife | 109 Hyers St | 47 | White | Pennsylvania | Married | Seamstress | 
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