HC
Helen Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adair-County, Iowa
Our Model Tree links this Helen Cooper across the 1930 and 1940 US Censuses in Adair-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adair-County, Iowa |
| Surname | Cooper |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Adair |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Bridgewater Twp |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Lawrence Cooper | Son | — | 16 | ~1924 |
| Clarence Cooper | Son | — | 8 | ~1932 |
| Nathan Cooper | Daughter | — | 3 | ~1937 |
| Russel Cooper | Son | — | ~1940 | |
| Vern Cooper | Head | — | 44 | ~1896 |
| Helen Cooper | Spouse | — | 39 | ~1901 |
| Helen Cooper | Daughter | — | 13 | ~1927 |
| Veznie Cooper | Son | — | 11 | ~1929 |
| Carl Cooper | Son | — | 19 | ~1921 |
Census Appearances
1930
Adair, Iowa
Daughter, age 4
Adair, Iowa · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Adair-County, Iowa
Daughter, age 13
Adair-County, Iowa · implied b. ~1927 — 9 household members
| Surname | Cooper |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Adair |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 13 · b. ~1927 · Iowa
★ You are viewing this record
Sibling
Lawrence Cooper
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nathan Cooper
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russel Cooper
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veznie Cooper
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Cooper
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Cooper
Sibling · 1940 · age 8
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 — Adair-County, Iowa
Open full size
1940 US Federal Census — Adair-County, Iowa
Page Contents
34 people indexed on this census page (nara:1940:m-t0627-01136-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Effie Vorrath | 47 | Head | — | Iowa |
| 2 | Howard Vorrath | 27 | Son | Laborer | Iowa |
| 3 | Charlie Tucker | 33 | Head | Laborer | Iowa |
| 4 | Cleo Tucker | 26 | Wife | — | Iowa |
| 5 | Norma Jean Tucker | 5 | Daughter | — | Iowa |
| 6 | Verna Tucker | 3 | Daughter | — | Iowa |
| 7 | Clay Evans | 67 | Head | Farming | Ohio |
| 8 | Gertrude Evans | 58 | Wife | — | Kansas |
| 9 | Kenneth Evans | 31 | Son | Farming | Iowa |
| 10 | August Tollman | 64 | Head | Farming | Iowa |
| 11 | Nellie Tollman | 59 | Wife | — | Kansas |
| 12 | John F. Warrior | 45 | Head | Farming | Iowa |
| 13 | Maude Warrior | 47 | Wife | — | Iowa |
| 14 | Beth Warrior | 11 | Daughter | — | Iowa |
| 15 | John Warrior | 8 | Son | — | Iowa |
| 16 | Logan Warrior | 5 | Daughter | — | Iowa |
| 17 | Elmer Fruse | 26 | Head | Farming | Iowa |
| 18 | Marion Fruse | 25 | Wife | — | Iowa |
| 19 | Roy Bush | 52 | Head | Farming | Iowa |
| 20 | Nellie Bush | 57 | Wife | — | Iowa |
| 21 | Junior Bush | 17 | Son | Farming | Iowa |
| 22 | Lois Bush | 15 | Daughter | — | Iowa |
| 23 | Harvey Bush | 12 | Son | — | Iowa |
| 24 | Elma Bush | 11 | Daughter | — | Iowa |
| 25 | Delores Bush | 9 | Daughter | — | Iowa |
| 26 | Vern Cooper | 44 | Head | Farming | Iowa |
| 27 | Helen Cooper | 39 | Wife | — | South Dak |
| 28 | Carl Cooper | 19 | Son | Storeman | Iowa |
| 29 | Lawrence Cooper | 16 | Son | Farming | South Dak |
| 30 | Helen Cooper THIS PERSON | 13 | Daughter | — | Iowa |
| 31 | Veznie Cooper | 11 | Son | — | Iowa |
| 32 | Clarence Cooper | 8 | Son | — | Iowa |
| 33 | Nathan Cooper | 3 | Daughter | — | Iowa |
| 34 | Russel Cooper | 0 | Son | — | Iowa |
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)