JC
John Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vigo-County, Indiana
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Vigo-County, Indiana (XGBoost, ~Confirmed), with identified parents Bert & Mamie — first a head (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Vigo-County, Indiana |
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Sugar Creek Tp. |
| 1935 Residence (County) | Vigo |
| Additional Details | |
| Occupation | Laborer |
| Industry | County Road |
| Class of Worker | GW |
| Hours Worked | 42 |
| Income (1939) | 575 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Sugar Creek Tp |
| Est. Birth Year | ~1900 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Cooper | Head | — | 40 | ~1900 |
| John Cooper | Son | — | 5 | ~1935 |
| Vern Cooper | Son | — | 12 | ~1928 |
| Albert Cooper | Son | — | 3 | ~1937 |
| Robert Cooper | Son | — | 11 | ~1929 |
| Mary Cooper | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Vigo, Indiana
Son, age 19
Vigo, Indiana · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Vigo, Indiana
Head, age 30
Vigo, Indiana · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 6 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Vigo-County, Indiana
Head, age 40
Vigo-County, Indiana · implied b. ~1900 — 6 household members
| Surname | Cooper |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Sugar Creek Tp. |
| 1935 Residence (County) | Vigo |
| Occupation | Laborer |
| Industry | County Road |
| Class of Worker | GW |
| Hours Worked | 42 |
| Income (1939) | 575 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 John Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bert Cooper (~0.92 confidence) and mother Mamie Cooper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bert Cooper
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mamie Cooper
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cooper
Head · 1940 · age 40 · b. ~1900 · Indiana
★ 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 — Vigo-County, Indiana
Open full size
1940 US Federal Census — Vigo-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01105-00619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susan Knight | 29 | Wife | — | Indiana |
| 2 | Phyllis Knight | 4 | Daughter | — | Illinois |
| 3 | Clayton E. Knight | 1 | Son | — | Indiana |
| 4 | John Cooper THIS PERSON | 40 | Head | Laborer | Illinois |
| 5 | Mary Cooper | 32 | Wife | — | Illinois |
| 6 | Vern Cooper | 12 | Son | — | Indiana |
| 7 | Robert Cooper | 11 | Son | — | Indiana |
| 8 | John Cooper | 5 | Son | — | Indiana |
| 9 | Albert Cooper | 3 | Son | — | Indiana |
| 10 | Richard Bernhart | 20 | Head | Gravel Pit | Indiana |
| 11 | Clora Bernhart | 20 | Wife | — | Kentucky |
| 12 | Martin Thomas | 59 | Head | Road Work | Indiana |
| 13 | Francis Thomas | 31 | Wife | — | Illinois |
| 14 | Harry A. Roth | 58 | Head | Pumper | Indiana |
| 15 | Margaret Roth | 58 | Wife | — | Indiana |
| 16 | Robert Roth | 24 | Son | New Worker | Indiana |
| 17 | Lloyd Roth | 21 | Son | New Worker | Indiana |
| 18 | Rose M. Roth | 19 | Daughter | — | Indiana |
| 19 | Merlin Roth | 18 | Son | New Worker | Indiana |
| 20 | Russell Roth | 17 | Son | New Worker | Indiana |
| 21 | Margaret Ann Roth | 15 | Daughter | — | Indiana |
| 22 | Bernard Rolls | 37 | Head | Drip Rider | Indiana |
| 23 | Agnes Rolls | 35 | Wife | — | Indiana |
| 24 | Sylvia Rolls | 7 | Daughter | — | Indiana |
| 25 | Walter Conover | 62 | Head | Brick Layer | Indiana |
| 26 | Delia Conover | 54 | Wife | — | Indiana |
| 27 | Harvey Barnhart | 39 | Head | Road Work | Indiana |
| 28 | Mabel Barnhart | 40 | Wife | — | Indiana |
| 29 | Carl Barnhart | 18 | Son | Track Field | Indiana |
| 30 | Max Barnhart | 16 | Son | — | Indiana |
| 31 | Robert Barnhart | 11 | Son | — | Indiana |
| 32 | Charles Callahan | 75 | Head | — | Kentucky |
| 33 | Flora B. Callahan | 74 | Wife | — | Illinois |
| 34 | Charles Sanders | 55 | Head | Laborer | Illinois |
| 35 | Maude Sanders | 55 | Wife | — | Indiana |
| 36 | Elaine Sanders | 17 | Daughter | — | Illinois |
| 37 | Virgil Spice | 43 | Head | — | Indiana |
| 38 | Goldie Spice | 37 | Wife | — | Indiana |
| 39 | Robert Spice | 17 | Son | Nursery Work | Indiana |
| 40 | Carl Spice | 15 | Son | — | Indiana |
Pedigree Summary
John
Gen 1 · 2 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)