HC
Helen Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Helen Cooper across the 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Cooper |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Clayton City |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | G 6 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Clayton City |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Cooper | Spouse | — | 36 | ~1904 |
| Marilyn Cooper | Daughter | — | 3 | ~1937 |
| Philip Cooper | Head | — | 37 | ~1903 |
| Laura Cooper | Daughter | — | 5 | ~1935 |
| Clinton Cooper | Son | — | 10 | ~1930 |
| George Cooper | Son | — | 15 | ~1925 |
| Jack Cooper | Son | — | 13 | ~1927 |
| Helen Cooper | Daughter | — | 12 | ~1928 |
| Philip Cooper | Son | — | 7 | ~1933 |
Census Appearances
1930
Montgomery, Ohio
Other, age 2
Montgomery, Ohio · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Helen E. |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Daughter, age 12
Montgomery-County, Ohio · implied b. ~1928 — 9 household members
| Surname | Cooper |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Clayton City |
| 1935 Residence (County) | Montgomery |
| Highest Grade | G 6 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Helen Cooper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Cooper
Daughter · 1940 · age 12 · b. ~1928 · Ohio
★ You are viewing this record
Sibling
Marilyn Cooper
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Cooper
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Cooper
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Cooper
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clinton Cooper
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Cooper
Sibling · 1940 · age 7
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03254-00901)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruby Collins | 16 | Daughter | — | Ohio |
| 2 | Betty Jean Collins | 13 | Daughter | — | Ohio |
| 3 | Sam Hartford | 55 | Head | Salesman | Illinois |
| 4 | Elizabeth Hartford | 32 | Wife | Cook | Tennessee |
| 5 | Helen Barnhart | 48 | Head | Butcher | Michigan |
| 6 | Bernice Barnhart | 30 | Wife | House Maid | Michigan |
| 7 | Philip Cooper | 37 | Head | — | Michigan |
| 8 | Evelyn Cooper | 36 | Wife | — | Ohio |
| 9 | George Cooper | 15 | Son | — | Ohio |
| 10 | Jack Cooper | 13 | Son | — | Ohio |
| 11 | Helen Cooper THIS PERSON | 12 | Daughter | — | Ohio |
| 12 | Clinton Cooper | 10 | Son | — | Ohio |
| 13 | Philip Jr. Cooper | 7 | Son | — | Ohio |
| 14 | Laura Jane Cooper | 5 | Daughter | — | Ohio |
| 15 | Marilyn Cooper | 3 | Daughter | — | Ohio |
| 16 | Helen Barnhart | 49 | Head | Salesman | Michigan |
| 17 | Bernice Barnhart | 34 | Wife | Cook | Michigan |
| 18 | Betty Barnhart | 13 | Daughter | — | Michigan |
| 19 | Helen Barnhart | 12 | Daughter | — | Michigan |
| 20 | Dorothy Barnhart | 9 | Daughter | — | Ohio |
| 21 | Shirley Barnhart | 7 | Daughter | — | Michigan |
| 22 | Adam Wilding | 53 | Head | Laborer | Yugoslavia |
| 23 | Magdalena Wilding | 44 | Wife | — | Yugoslavia |
| 24 | Martin Armbruster | 26 | Son | Assembler | Yugoslavia |
| 25 | Russel Sharp | 25 | Head | Wrapper | Ohio |
| 26 | Maud Sharp | 22 | Wife | — | Kentucky |
| 27 | Carol J. Sharp | 1 | Daughter | — | Ohio |
| 28 | Barbara Sharp | 0 | Daughter | — | Ohio |
| 29 | Herman Cleyet | 44 | Head | Tool Crib Attendant | Ohio |
| 30 | Agatha Cleyet | 44 | Wife | — | Ohio |
| 31 | Herman Jr. Cleyet | 21 | Son | Mailer | Ohio |
| 32 | Marjorie Cleyet | 18 | Daughter | — | Ohio |
| 33 | James Robuto | 29 | Head | Truck-Driver | Ohio |
| 34 | Helen Robuto | 24 | Wife | — | Pennsylvania |
| 35 | Barbara Robuto | 6 | Daughter | — | Ohio |
| 36 | Theodore Carroll | 33 | Head | Trucker | Ohio |
| 37 | Elizabeth Carroll | 32 | Wife | — | Ohio |
| 38 | Giles Basham | 48 | Head | Seamstress | Kentucky |
| 39 | Lorecia Basham | 17 | Daughter | — | Ohio |
| 40 | James Basham | 14 | Son | — | Ohio |
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)