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 Samuel & Gertrude — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
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 | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Clerical |
| Industry | Retail Dry Goods Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Clerical |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Ruth Cooper | Daughter | — | 26 | ~1914 |
| Lois Cooper | Head | — | 48 | ~1892 |
| Mary Cooper | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Marion, Indiana
Daughter, age 6
Marion, Indiana · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Ruth M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 15
Marion, Indiana · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Ruth Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 26
Marion-County, Indiana · implied b. ~1914 — 3 household members
| Surname | Cooper |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Clerical |
| Industry | Retail Dry Goods Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Samuel Cooper (~0.92 confidence) and mother Gertrude Cooper (~0.92 confidence) and mother Lois Cooper (~0.92 confidence) and mother Lora Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Cooper
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Gertrude Cooper
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Lois Cooper
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Lora Cooper
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Cooper
Daughter · 1940 · age 26 · b. ~1914 · Indiana
★ You are viewing this record
Sibling
Mary Cooper
Sibling · 1940 · age 24
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 — 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-t0627-01129-01028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Steiner | 81 | Head | — | Iowa |
| 2 | Amelia Steiner | 73 | Wife | — | Indiana |
| 3 | Viola Geothart | 46 | Head | Stenographer | Indiana |
| 4 | Marie Geothart | 21 | Daughter | — | New York |
| 5 | Anna Force | 71 | Mother | — | Indiana |
| 6 | Agnes Harmon | 62 | Head | — | Ireland |
| 7 | Thomas Harmon | 27 | Son | City Fireman | Indiana |
| 8 | James Harmon | 25 | Son | Clerk | Indiana |
| 9 | Joseph Martens | 66 | Head | Medical Doctor | Kentucky |
| 10 | Grace Martens | 60 | Wife | — | Indiana |
| 11 | Orville Elmore | 31 | Head | Brakeman | Indiana |
| 12 | Lillian Elmore | 31 | Wife | — | Indiana |
| 13 | Marlene Elmore | 7 | Daughter | — | Indiana |
| 14 | Morris Fairbanks | 30 | Brother | Fireman | Indiana |
| 15 | Patrick Higgins | 44 | Head | Machinist | Indiana |
| 16 | Mary Higgins | 42 | Wife | — | Ohio |
| 17 | Robert Higgins | 19 | Son | Clerk | Indiana |
| 18 | William Higgins | 17 | Son | Clerk | Indiana |
| 19 | James Higgins | 14 | Son | — | Indiana |
| 20 | Donald Higgins | 12 | Son | — | Indiana |
| 21 | John Higgins | 7 | Son | — | Indiana |
| 22 | Charles Ford | 47 | Head | Steel Mill | Pennsylvania |
| 23 | Pearl Ford | 48 | Wife | — | Indiana |
| 24 | Lee Dailey | 34 | Head | Painter Machine | Indiana |
| 25 | Mary Dailey | 25 | Wife | — | Indiana |
| 26 | Hattie Lockhart | 54 | Cousin | — | Indiana |
| 27 | Frank Boatman | 67 | Head | — | Ohio |
| 28 | Athathia Boatman | 72 | Wife | — | Indiana |
| 29 | Lois Cooper | 48 | Head | — | Indiana |
| 30 | Ruth Cooper THIS PERSON | 26 | Daughter | Clerical | Indiana |
| 31 | Mary Cooper | 24 | Daughter | Clerical | Indiana |
| 32 | Henry B. Dynes | 55 | Head | Labor Relations Counselor | Indiana |
| 33 | Lillie Dynes | 55 | Wife | — | Indiana |
| 34 | Margie Ann Dynes | 17 | Daughter | — | Indiana |
| 35 | Loretta Mccormick | 19 | Daughter | — | Indiana |
| 36 | J. Francis Aker | 66 | Head | Collector | Pennsylvania |
| 37 | Olga H. Aker | 59 | Wife | — | Indiana |
| 38 | Marjorie Ruth Aker | 27 | Daughter | Teller | Indiana |
| 39 | Frank Schubert | 51 | Head | Florist | Indiana |
| 40 | Cora Schubert | 52 | Wife | — | Indiana |
Pedigree Summary
Ruth + 1 sibling
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)