WC
Walter Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marshall-County, Iowa
Our Model Tree links this Walter Cooper across the 1910, 1920, 1930 and 1940 US Censuses in Marshall-County, Iowa (XGBoost, ~Confirmed), with identified parents Garret & Jarrett — first a head (b.~1891), then head of a 6-person household.
Age 49
b. ~1891
Male
Head
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Iowa |
| Surname | Cooper |
| Given Name | Walter S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Eden Twp |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | O |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Farmer |
| Township / Ward | Eden Twp |
| Est. Birth Year | ~1891 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Sandra Cooper | Daughter | — | 3 | ~1937 |
| James Cooper | Son | — | 15 | ~1925 |
| Leta Cooper | Spouse | — | 44 | ~1896 |
| Vivian Cooper | Daughter | — | 20 | ~1920 |
| Gary Cooper | Son | — | 12 | ~1928 |
| Walter Cooper | Head | — | 49 | ~1891 |
Census Appearances
1910
Marshall, Iowa
Son, age 18
Marshall, Iowa · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1920
Marshall, Iowa
Son, age 28
Marshall, Iowa · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter S. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | farmer |
| Industry | General farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Marshall, Iowa
Head, age 38
Marshall, Iowa · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 24 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Marshall-County, Iowa
Head, age 49
Marshall-County, Iowa · implied b. ~1891 — 6 household members
| Surname | Cooper |
| Given Name | Walter S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Eden Twp |
| 1935 Residence (County) | Marshall |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | O |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Walter Cooper across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Garret Cooper (~0.92 confidence) and father Jarrett Cooper (~0.92 confidence) and mother Alice Cooper (~0.92 confidence) and mother Alice Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Garret Cooper
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Jarrett Cooper
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Alice Cooper
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Alice Cooper
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Cooper
Head · 1940 · age 49 · b. ~1891 · Iowa
★ 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 — Marshall-County, Iowa
Open full size
1940 US Federal Census — Marshall-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01182-00038)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Gauch | 49 | wife | — | Iowa |
| 42 | Anton J. Gauch | 29 | son | Laborer | Iowa |
| 43 | Roma L. Gauch | 15 | daughter | — | Iowa |
| 44 | A. Eilene Gauch | 11 | daughter | — | Iowa |
| 45 | Walter S. Cooper THIS PERSON | 49 | Head | Farmer | Nebraska |
| 46 | Leta E. Cooper | 44 | wife | — | Iowa |
| 47 | Vivian I. Cooper | 20 | daughter | — | Iowa |
| 48 | James W. Cooper | 15 | son | — | Iowa |
| 49 | Gary P. Cooper | 12 | son | — | Iowa |
| 50 | Sandra S. Cooper | 3 | daughter | — | Iowa |
| 51 | John Van Cleave | 39 | Head | Farmer | Iowa |
| 52 | Gladys Van Cleave | 35 | wife | — | Iowa |
| 53 | Allene F. Van Cleave | 14 | daughter | — | Iowa |
| 54 | Vandekamp John | 32 | Head | Farmer | Iowa |
| 55 | Doris M. John | 9 | daughter | — | Iowa |
| 56 | Mary L. John | 8 | daughter | — | Iowa |
| 57 | Blanche Kishner | 58 | Mother-in-law | — | Iowa |
| 58 | Claude Harkins | 59 | Hired hand | Laborer | Missouri |
| 59 | Earnista Depping | 62 | Head | Mechanic | Germany |
| 60 | Bertha Depping | 62 | wife | — | Germany |
| 61 | Dora A. Depping | 29 | daughter | — | Iowa |
| 62 | Beatrice A. Depping | 26 | daughter | — | Iowa |
| 63 | John L. Depping | 25 | son | Laborer | Iowa |
| 64 | Vincent A. Depping | 21 | son | Laborer | Iowa |
| 65 | Oscar E. Depping | 19 | son | Laborer | Iowa |
| 66 | Fred A. Cook | 55 | Head | Farmer | Iowa |
| 67 | Barbara P. Cook | 47 | wife | — | Ohio |
| 68 | Paul H. Cook | 16 | son | Helper | Iowa |
| 69 | Marjory B. Cook | 15 | daughter | — | Iowa |
| 70 | Leota P. Cook | 13 | daughter | — | Iowa |
| 71 | Luetta M. Cook | 10 | daughter | — | Iowa |
| 72 | Helen Cook | 5 | daughter | — | Iowa |
| 73 | John W. Hanthorn | 51 | Head | Farmer | Iowa |
| 74 | Clara L. Hanthorn | 44 | wife | — | Iowa |
| 75 | Lloyd Brockert | 58 | Hired man | Laborer | Iowa |
| 76 | Russell Pyle | 55 | Head | Farmer | Iowa |
| 77 | Dora Pyle | 56 | wife | — | Iowa |
| 78 | Lloyd Pyle | 21 | son | Helper | Iowa |
| 79 | Sophie Harre | 69 | Head | — | Illinois |
| 80 | Irene M. Harre | 37 | daughter | — | Iowa |
Pedigree Summary
Walter
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)