RC
Ruth Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Ruth Cooper across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | COOPER |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | grinder |
| Industry | sound equip |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Grinder |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1917 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Cooper | Spouse | — | 44 | ~1896 |
| Ruth Cooper | Daughter | — | 23 | ~1917 |
| James Cooper | Head | — | 44 | ~1896 |
Census Appearances
1920
Marion, Indiana
Daughter, age 2
Marion, Indiana · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 13
Marion, Indiana · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 23
Marion-County, Indiana · implied b. ~1917 — 3 household members
| Surname | COOPER |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | grinder |
| Industry | sound equip |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| 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 Ruth Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Cooper (~0.92 confidence) and father James Cooper (~0.92 confidence) and father James Cooper (~0.92 confidence) and mother Gertrude Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Cooper
b. ~1896
Source father
● Household
· direct · ~0.92
Father
James Cooper
b. ~1896
Source father
● Household
· direct · ~0.92
Father
James Cooper
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Gertrude Cooper
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Cooper
Daughter · 1940 · age 23 · b. ~1917 · 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
27 people indexed on this census page (nara:1940:m-t0627-01125-00930)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank M. Hart | 35 | Head | Manager | Texas |
| 42 | Jessie M. Hart | 34 | Wife | Key Punch Operator | Indiana |
| 43 | Odis J. Sachs | 27 | Head | Clerk | Indiana |
| 44 | Mary M. Sachs | 22 | Wife | — | Indiana |
| 45 | Karen Sue Sachs | 0 | Daughter | — | Indiana |
| 46 | James W. Cooper | 44 | Head | Switchman | Ohio |
| 47 | Gertrude Cooper | 44 | Wife | — | Indiana |
| 48 | Ruth Cooper THIS PERSON | 23 | Daughter | Grinder | Indiana |
| 49 | William O. Wood | 46 | Head | Mechanic | Ohio |
| 50 | Bessie M. Wood | 46 | Wife | — | Indiana |
| 51 | Jerner E. Maple | 67 | Head | Elevator Constructor | Indiana |
| 52 | Jessy E. Maple | 61 | Wife | — | So Carolina |
| 53 | Harold W. Lindholm | 37 | Head | Mechanic | Indiana |
| 54 | Viola Lindholm | 34 | Wife | Operator | Indiana |
| 55 | Alice Grubbs | 65 | Mother-in-law | — | Indiana |
| 56 | John R. Stumph | 35 | Head | Machinist | Indiana |
| 57 | Mildred M. Stumph | 30 | Wife | Stenographer | Indiana |
| 58 | Milo Mccreary | 60 | Head | Salesman | Indiana |
| 59 | Maggie Mccreary | 58 | Wife | — | Indiana |
| 60 | Thomas Mccreary | 25 | Son | Civil Field Mgr | Indiana |
| 61 | Elizabeth Mccreary | 21 | Daughter-in-law | — | Indiana |
| 62 | John Mccreary | 30 | Son | State Agent | Indiana |
| 63 | Thelma Mccreary | 24 | Daughter-in-law | — | Indiana |
| 64 | George F. Lovell | 31 | Head | Layout | Ohio |
| 65 | Doris Lovell | 31 | Wife | Polisher | Indiana |
| 67 | Oscar B. Powell | 47 | Head | Driver | Kentucky |
| 68 | Naomi @ Powell | 42 | Wife | — | Kentucky |
Pedigree Summary
Ruth
Gen 1 · 4 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)