DC
Dorothy Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Dorothy Cooper across the 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed), with identified parents Dennis & Robert — first a daughter (b.~1909), then head of a 7-person household.
Age 31
b. ~1909
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1909 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Ethel Cooper | Daughter | — | 37 | ~1903 |
| William Cooper | Son | — | 25 | ~1915 |
| Mary Cooper | Daughter | — | 22 | ~1918 |
| Stephen Cooper | Son | — | 27 | ~1913 |
| Elizabeth Cooper | Spouse | — | 57 | ~1883 |
| Dorothy Cooper | Daughter | — | 31 | ~1909 |
| Dennis Cooper | Head | — | 56 | ~1884 |
Census Appearances
1920
Bronx, New …
Daughter, age 10
Bronx, New York · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Bronx, New …
Daughter, age 20
Bronx, New York · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Bronx-County, New …
Daughter, age 31
Bronx-County, New York · implied b. ~1909 — 7 household members
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Dorothy Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Dennis Cooper (~0.92 confidence) and father Robert Cooper (~0.92 confidence) and mother Elizabeth Cooper (~0.92 confidence) and mother Rose Cooper (~0.92 confidence) and mother Rose Cooper (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dennis Cooper
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Robert Cooper
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Cooper
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Rose Cooper
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Rose Cooper
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Cooper
Daughter · 1940 · age 31 · b. ~1909 · New York
★ You are viewing this record
Sibling
Stephen Cooper
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Cooper
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cooper
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cooper
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02484-00458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louise Kean | 23 | daughter | — | New York |
| 2 | James Kean | 15 | son | — | New York |
| 3 | Edward Murr | 36 | Head | Electrician | New York |
| 4 | Blanche Murr | 34 | Wife | — | New York |
| 5 | Edward Jr Murr | 13 | son | — | New York |
| 6 | Ronald Murr | 8 | son | — | New York |
| 7 | Thomas Swift | 50 | Head | Carpenter | New York |
| 8 | Elizabeth Swift | 40 | Wife | — | New York |
| 9 | Thomas Jr Swift | 20 | son | Corr. Acct. | New York |
| 10 | Richard Swift | 9 | son | — | New York |
| 11 | Arthur Maley | 68 | Head | — | England |
| 12 | Amelia K Pahneke | 68 | Head | — | Germany |
| 13 | John C Pahneke | 43 | son | Auditor & Acct | New York |
| 14 | Bridget Fitzsimmons | 65 | Head | — | Ireland (Eire) |
| 15 | Naomi Fitzsimmons | 25 | daughter | Clerk | New York |
| 16 | John Mladinich | 48 | Head | Machinist | Austria |
| 17 | Hilma Mladinich | 46 | Wife | — | China, Alaska |
| 18 | William Smith | 25 | stepson | Clerk | New York |
| 19 | Jacob Sepp | 72 | Head | — | Germany |
| 20 | Arthur Anderson | 44 | son in law | Bakery Supt | Georgia |
| 21 | Lillian Anderson | 40 | daughter | — | New York |
| 22 | William Raper | 46 | Head | Clerk | New York |
| 23 | Frances Raper | 31 | Wife | — | New York |
| 24 | Lorraine Raper | 9 | daughter | — | New York |
| 25 | Dennis Cooper | 56 | Head | Sext. | New York |
| 26 | Elizabeth Cooper | 57 | Wife | — | New York |
| 27 | Ethel Cooper | 37 | daughter | Clerk | New York |
| 28 | Dorothy Cooper THIS PERSON | 31 | daughter | — | New York |
| 29 | Stephen Cooper | 27 | son | Clerk | New York |
| 30 | William Cooper | 25 | son | Stock Clerk | New York |
| 31 | Mary E Cooper | 22 | daughter | Dental Asst. | New York |
| 32 | Emil Ostheimer | 58 | Head | Carpenter | New York |
| 33 | Bertha Ostheimer | 55 | Wife | Housework | Germany |
| 34 | Gilbert Zimmerman | 24 | roomer | Stock Clerk | New York |
| 35 | Ellen Zimmerman | 27 | daughter | — | New York |
| 36 | John Van Nostrand | 43 | Head | Machinist | New York |
| 37 | Anna Van Nostrand | 50 | Wife | — | New York |
| 38 | Katherine Siebel | 78 | mother in law | — | Germany |
| 39 | Charles Mcdonald | 49 | Head | Steamfitter | New York |
| 40 | Nellie Mcdonald | 48 | Wife | — | New York |
Pedigree Summary
Dorothy + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)