JC
James Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Poweshiek-County, Iowa
Our Model Tree links this James Cooper across the 1920, 1930 and 1940 US Censuses in Poweshiek-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 10-person household.
Age 65
b. ~1875
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Poweshiek-County, Iowa |
| Surname | Cooper |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Montezuma Town |
| 1935 Residence (County) | Poweshiek |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Montezuma Town |
| Est. Birth Year | ~1875 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Cooper | Head | — | 65 | ~1875 |
| Sarah Stull | Other | — | 67 | ~1873 |
| Mable Cooper | Other | — | 25 | ~1915 |
| Alexander Lester | Other | — | 77 | ~1863 |
| Helen Beattie | Other | — | 83 | ~1857 |
| Margie Cooper | Other | — | 2 | ~1938 |
| Claudina Cooper | Other | — | 4 | ~1936 |
| William Cooper | Son | — | 30 | ~1910 |
| Virgil Cooper | Son | — | 28 | ~1912 |
| Rosa Cooper | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Poweshiek, Iowa
Head, age 45
Poweshiek, Iowa · implied b. ~1875 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | English |
| Occupation | Yes |
| Industry | Farmer |
| Class of Worker | General Farm |
| Can Read | English |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotland |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Poweshiek, Iowa
Head, age 55
Poweshiek, Iowa · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | City Labor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Poweshiek-County, Iowa
Head, age 65
Poweshiek-County, Iowa · implied b. ~1875 — 10 household members
| Surname | Cooper |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Montezuma Town |
| 1935 Residence (County) | Poweshiek |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 James Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cooper
Head · 1940 · age 65 · b. ~1875 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Poweshiek-County, Iowa
Open full size
1940 US Federal Census — Poweshiek-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01200-00311)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William R Jordan | 70 | Head | — | Ohio |
| 2 | Mollie M Jordan | 65 | Wife | — | Iowa |
| 3 | Cleo Yeo | 33 | Head | Owner Truck | Iowa |
| 4 | Louise Yeo | 29 | Wife | — | Iowa |
| 5 | Clyde Yeo | 10 | Son | — | Iowa |
| 6 | Richard Yeo | 8 | Son | — | Iowa |
| 7 | Marie Yeo | 6 | Daughter | — | Iowa |
| 8 | Lucile Yeo | 0 | Daughter | — | Iowa |
| 9 | James M Hedrick | 52 | Head | Farmer | Missouri |
| 10 | Lulu Hedrick | 52 | Wife | — | Missouri |
| 11 | Belle Shacklett | 75 | Mother in law | — | Illinois |
| 12 | Eldon Hedrick | 27 | Head | Trucker | Missouri |
| 13 | Alene Hedrick | 23 | Wife | — | Iowa |
| 14 | Jimmy R Hedrick | 0 | Son | — | Iowa |
| 15 | James Cooper THIS PERSON | 65 | Head | — | Iowa |
| 16 | Rosa Cooper | 64 | Wife | — | Iowa |
| 17 | Virgil Cooper | 28 | Son | Oil Station Attendant | Iowa |
| 18 | William Cooper | 30 | Son | Painter | Canada |
| 19 | Mable Cooper | 25 | Daughter in law | — | Iowa |
| 20 | Claudina Cooper | 4 | Grand daughter | — | Iowa |
| 21 | Margie Cooper | 2 | Grand daughter | — | Iowa |
| 22 | Helen Beattie | 83 | Lodger | — | Iowa |
| 23 | Sarah Stull | 67 | Lodger | — | Iowa |
| 24 | Alexander C Lester | 77 | Lodger | — | Iowa |
| 25 | Joshua Dunlap | 68 | Head | Janitor | Pennsylvania |
| 26 | Jennie Dunlap | 63 | Wife | — | Iowa |
| 27 | David Kirby | 18 | Grand son | Paper Hanger | Missouri |
| 28 | Naoma Kirby | 13 | Grand daughter | — | Iowa |
| 29 | Thomas R Hill | 43 | Head | Clergyman | Ireland |
| 30 | Helen Hill | 40 | Wife | — | Iowa |
| 31 | Delbert H High | 65 | Head | Dentist | Iowa |
| 32 | Nellie F High | 60 | Sister | — | Iowa |
| 33 | Richard High | 18 | Son | Abstractor | Iowa |
| 34 | Mayme S Taylor | 63 | Head | — | Iowa |
| 35 | John A Morris | 33 | Head | Student Pastor | Oklahoma |
| 36 | Meriam Morris | 30 | Wife | Grade Teacher | Missouri |
| 37 | Dora S Inglesby | 27 | Head | Home Economics Teacher | Iowa |
| 38 | Ida S Bone | 70 | Head | — | Iowa |
| 39 | Verna B Ayres | 52 | Head | — | Iowa |
| 40 | Raymond Ayres | 31 | Son | Assistant Postmaster | Nebraska |
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)