JT
Jack Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Vigo-County, Indiana
Our Model Tree links this Jack Thomas across the 1930 and 1940 US Censuses in Vigo-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vigo-County, Indiana |
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Harrison Twp |
| 1935 Residence (County) | Vigo |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Harrison 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Jack Thomas | Son | — | 13 | ~1927 |
| Rubben Thomas | Head | — | 41 | ~1899 |
| Charlotte Thomas | Daughter | — | 4 | ~1936 |
| Marjorie Thomas | Daughter | — | 8 | ~1932 |
| Mabel Thomas | Spouse | — | 36 | ~1904 |
| Shirley Thomas | Daughter | — | 7 | ~1933 |
| Carolyn Thomas | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Vigo, Indiana
Son, age 4
Vigo, Indiana · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Illinois |
| Mother's Birthplace | W. Virginia |
| Can Read/Write | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Vigo-County, Indiana
Son, age 13
Vigo-County, Indiana · implied b. ~1927 — 7 household members
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Harrison Twp |
| 1935 Residence (County) | Vigo |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Jack Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Thomas
Son · 1940 · age 13 · b. ~1927 · Indiana
★ You are viewing this record
Sibling
Carolyn Thomas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Thomas
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Thomas
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 — 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-t0627-01104-00905)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas A. Lonie | 29 | Head | None | Indiana |
| 2 | Elinor Lonie | 23 | Wife | — | Indiana |
| 3 | Sylvester Fenton | 22 | Head | Janitor | Indiana |
| 4 | Mary Fenton | 18 | Wife | — | Illinois |
| 5 | Clarence A. Thomas | 31 | Head | Truck Driver | Indiana |
| 6 | Edith B Thomas | 33 | Wife | — | Illinois |
| 7 | Kenneth E. Thomas | 13 | Son | — | Indiana |
| 8 | Norman E Thomas | 10 | Son | — | Indiana |
| 9 | Jacob Horseman | 47 | Head | Section Hand | Indiana |
| 10 | Evelyn Horseman | 40 | Wife | — | Indiana |
| 11 | Ethel Horseman | 20 | Daughter | — | Arkansas |
| 12 | June Horseman | 12 | Daughter | — | Arkansas |
| 13 | Orville Bailey | 54 | Head | Cafeteria Worker | Indiana |
| 14 | Mae D Bailey | 44 | Wife | Tavern Helper | Ohio |
| 15 | Rubben Thomas | 41 | Head | Molder | Indiana |
| 16 | Mabel Thomas | 36 | Wife | — | Indiana |
| 17 | Jack Thomas THIS PERSON | 13 | Son | — | Indiana |
| 18 | Marjorie L Thomas | 8 | Daughter | — | New Mexico |
| 19 | Shirley H Thomas | 7 | Daughter | — | Indiana |
| 20 | Carolyn S. Thomas | 5 | Daughter | — | Indiana |
| 21 | Charlotte Thomas | 4 | Daughter | — | Indiana |
| 22 | William E Moore | 76 | Head | — | Illinois |
| 23 | Cary Borders | 44 | Head | Laborer | Illinois |
| 24 | Louise Borders | 47 | Wife | — | Illinois |
| 25 | Althea Borders | 17 | Daughter | Asst To Janitor | Indiana |
| 26 | Marjorie Borders | 15 | Daughter | — | Indiana |
| 27 | Marjorie Mills | 7 | Daughter | — | Indiana |
| 28 | Alvey Helmick | 35 | Head | Feed Store | Indiana |
| 29 | Lois Helmick | 22 | Wife | — | Indiana |
| 30 | Cecilia A. Helmick | 3 | Daughter | — | Indiana |
| 31 | Virginia Helmick | 0 | Daughter | — | Indiana |
| 32 | Joseph Trinkle | 45 | Head | Laborer | Indiana |
| 33 | Nellie Trinkle | 45 | Wife | — | Indiana |
| 34 | Harry Stephens | 58 | Head | Laborer | Illinois |
| 35 | Edna Stephens | 54 | Wife | — | Michigan |
| 36 | Arthur Stephens | 13 | Son | — | Indiana |
| 37 | Archie Stephens | 13 | Son | — | Indiana |
| 38 | Claude Musselman | 57 | Head | Club Caretaker | Ohio |
| 39 | Lillian Musselman | 52 | Wife | — | Ohio |
| 40 | Mary J. Thelt | 38 | Head | Waitress | Indiana |
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)