DC
Dorothy Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-County, Wisconsin
Our Model Tree links this Dorothy Cooper across the 1930 and 1940 US Censuses in Rock-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-County, Wisconsin |
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Janesville City |
| 1935 Residence (County) | Rock |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Janesville City |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Ruth Cooper | Spouse | — | 39 | ~1901 |
| Esther Cooper | Daughter | — | 13 | ~1927 |
| Dorothy Cooper | Daughter | — | 15 | ~1925 |
| Leo Cooper | Head | — | 49 | ~1891 |
| Jean Cooper | Daughter | — | 7 | ~1933 |
| Ruth Cooper | Daughter | — | 14 | ~1926 |
| John Cooper | Son | — | 23 | ~1917 |
| Phillip Cooper | Son | — | 1 | ~1939 |
| Constance Cooper | Daughter | — | 3 | ~1937 |
| Douglas Cooper | Son | — | 11 | ~1929 |
Census Appearances
1930
Rock, Wisconsin
Daughter, age 5
Rock, Wisconsin · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Iowa |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Rock-County, Wisconsin
Daughter, age 15
Rock-County, Wisconsin · implied b. ~1925 — 10 household members
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Janesville City |
| 1935 Residence (County) | Rock |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Cooper
Daughter · 1940 · age 15 · b. ~1925 · Wisconsin
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Sibling
Phillip Cooper
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Cooper
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Constance Cooper
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cooper
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Douglas Cooper
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Cooper
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Cooper
Sibling · 1940 · age 14
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 — Rock-County, Wisconsin
Open full size
1940 US Federal Census — Rock-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04520-00781)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tressia | 54 | Wife | — | Wisconsin |
| 2 | Kenneth Tressia | 21 | Son | Mortician | Wisconsin |
| 3 | Mary Mckinnon | 51 | Sister in law | — | Wisconsin |
| 4 | Alfreda Perry | 78 | Head | Assembler | Wisconsin |
| 5 | Mildred Preston | 25 | Head | Clerk | Wisconsin |
| 6 | Arlie Mabee | 78 | Head | — | Wisconsin |
| 7 | Carrie Mabee | 75 | Wife | — | Wisconsin |
| 8 | Idella De Remer | 55 | Housekeeper | Housekeeper | Wisconsin |
| 9 | Thurman Smith | 31 | Head | Fish Removal | Iowa |
| 10 | Maxine Smith | 22 | Wife | — | Wisconsin |
| 11 | Donna Smith | 3 | Daughter | — | Wisconsin |
| 12 | Sandra Smith | 1 | Daughter | — | Wisconsin |
| 13 | Henry J. Schloemer | 59 | Head | Feeder | Wisconsin |
| 14 | Bridget Schloemer | 57 | Wife | — | Ireland |
| 15 | Patrick Schloemer | 22 | Son | — | Wisconsin |
| 16 | Beatrice Schloemer | 30 | Daughter | Presser | Wisconsin |
| 17 | Roy Mathews | 23 | Head | Laborer W.P.A. | Wisconsin |
| 18 | Lois Mathews | 22 | Wife | — | Wisconsin |
| 19 | Terry Mathews | 2 | Son | — | Wisconsin |
| 20 | Ronald Mathews | 1 | Son | — | Wisconsin |
| 21 | Emma Mathem | 54 | Head | Stemmer | Germany |
| 22 | Wayne Mathem | 19 | Son | — | Wisconsin |
| 23 | Leo Cooper | 49 | Head | Conductor | Wisconsin |
| 24 | Ruth Cooper | 39 | Wife | — | Wisconsin |
| 25 | John Cooper | 23 | Son | — | Wisconsin |
| 26 | Dorothy Cooper THIS PERSON | 15 | Daughter | — | Wisconsin |
| 27 | Ruth Anne Cooper | 14 | Daughter | — | Wisconsin |
| 28 | Esther Cooper | 13 | Daughter | — | Wisconsin |
| 29 | Douglas Cooper | 11 | Son | — | Wisconsin |
| 30 | Jean Catherine Cooper | 7 | Daughter | — | Wisconsin |
| 31 | Constance Cooper | 3 | Daughter | — | Wisconsin |
| 32 | Phillip Cooper | 1 | Son | — | Wisconsin |
| 33 | Oscar Anderson | 37 | Head | W.P.A. | Wisconsin |
| 34 | Mabel Anderson | 33 | Wife | — | Wisconsin |
| 35 | Elaine Anderson | 14 | Daughter | — | Minnesota |
| 36 | Jacqueline Anderson | 12 | Daughter | — | Minnesota |
| 37 | Roger Anderson | 5 | Son | — | Wisconsin |
| 38 | Lyle Anderson | 4 | Son | — | Wisconsin |
| 39 | Elmer Bartholomew | 63 | Head | — | New York |
| 40 | Ione Bartholomew | 50 | Wife | W.P.A. | Kentucky |
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)