DC
Dorothy Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Dorothy Cooper across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Harry & James — first a spouse (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Cooper |
| Given Name | Dorothy M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Joyce Cooper | Daughter | — | 1 | ~1939 |
| Evelyn Banks | Other | — | 15 | ~1925 |
| Dorothy Cooper | Spouse | — | 25 | ~1915 |
| Rennie Cooper | Head | — | 26 | ~1914 |
| Patricia Cooper | Daughter | — | 3 | ~1937 |
Census Appearances
1920
Marion, Indiana
Daughter, age 4
Marion, Indiana · implied b. ~1916 — 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 | 4 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 14
Marion, Indiana · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Spouse, age 25
Marion-County, Indiana · implied b. ~1915 — 5 household members
| Surname | Cooper |
| Given Name | Dorothy M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Harry Cooper (~0.92 confidence) and father James Cooper (~0.92 confidence) and mother Edna Cooper (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Cooper
b. ~1890
Source father
● Household
· direct · ~0.92
Father
James Cooper
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Edna Cooper
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Cooper
Spouse · 1940 · age 25 · b. ~1915 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01129-00274)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie S | 33 | Wife | — | Indiana |
| 42 | Patricia | 6 | Daughter | — | Indiana |
| 43 | Curd Robinson | 44 | Lodger | Chauffeur | Kentucky |
| 44 | Margaret Robinson | 25 | Lodger | Waitress | Indiana |
| 45 | Serene J West | 67 | Head | Loc. Eng. | Indiana |
| 46 | Anna M West | 56 | Wife | Bus Operator | Indiana |
| 47 | Charles B Edwards | 44 | Head | Fireman | Indiana |
| 48 | Clara O Edwards | 41 | Wife | — | Indiana |
| 49 | George W Grothend | 76 | Head | Upholsterer | Indiana |
| 50 | Clementine Grothend | 73 | Wife | — | Belgium |
| 51 | Rennie Cooper | 26 | Head | Laborer | Indiana |
| 52 | Dorothy M Cooper THIS PERSON | 25 | Wife | — | Indiana |
| 53 | Patricia J Cooper | 3 | Daughter | — | Indiana |
| 54 | Joyce E Cooper | 1 | Daughter | — | Indiana |
| 55 | Evelyn Banks | 15 | Sister | — | Indiana |
| 56 | John W Reedy | 65 | Head | Laborer | Indiana |
| 57 | Mary V Reedy | 63 | Wife | — | Indiana |
| 58 | William Reedy | 36 | Son | Secretary | Indiana |
| 59 | Mary Elizabeth Reedy | 35 | Daughter | — | Indiana |
| 60 | Charles Janitz | 34 | Head | Springer | Indiana |
| 61 | Ruth Janitz | 29 | Wife | — | Indiana |
| 62 | John Griffin | 56 | Head | Granulator | Kentucky |
| 63 | Katie Griffin | 53 | Wife | — | Indiana |
| 64 | John Archer | 10 | Grand-son | — | Indiana |
| 65 | Anna Lorentz | 73 | Lodger | — | Maryland |
| 66 | Margaret Hendricks | 70 | Lodger | — | Maryland |
| 67 | Leonard King | 33 | Head | Bus Operator | Tennessee |
| 68 | Ronella King | 30 | Wife | — | Indiana |
| 69 | Jackie King | 6 | Son | — | Indiana |
| 70 | Deberth L Weir | 54 | Head | — | Indiana |
| 71 | James D Ellis | 82 | Father-in-law | — | Indiana |
| 72 | George E Weir | 31 | Head | Attendant | Indiana |
| 73 | Beulah Weir | 31 | Wife | Bookkeeper | Indiana |
| 74 | Herbert Byington | 44 | Head | Locomotive Eng. | Ohio |
| 75 | Jessie Byington | 37 | Wife | — | Indiana |
| 76 | Kathleen Byington | 14 | Daughter | — | Indiana |
| 77 | Jack Byington | 7 | Son | — | Indiana |
| 78 | William J Eaton | 53 | Lodger | — | Indiana |
| 79 | Charles Owens | 73 | Head | — | Ohio |
| 80 | Allie Owens | 67 | Wife | Chairwoman | Indiana |
Pedigree Summary
Dorothy
Gen 1 · 3 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)