JT
Jack Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Vermilion-County, Illinois
Our Model Tree links this Jack Thomas across the 1930 and 1940 US Censuses in Vermilion-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vermilion-County, Illinois |
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville (Outside) |
| 1935 Residence (County) | Vermilion |
| Additional Details | |
| Occupation | Del. Boy |
| Industry | Ice and Truck |
| Class of Worker | PW |
| Hours Worked | 49 |
| Income (1939) | 90 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Del. Boy |
| Township / Ward | Danville Outside |
| Est. Birth Year | ~1923 |
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 |
|---|---|---|---|---|
| Ralph Thomas | Son | — | 15 | ~1925 |
| Bertha Thomas | Spouse | — | 35 | ~1905 |
| Jack Thomas | Son | — | 17 | ~1923 |
| Horace Thomas | Son | — | 19 | ~1921 |
| Gerald Thomas | Son | — | 9 | ~1931 |
| Horace Thomas | Head | — | 40 | ~1900 |
| Helen Thomas | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Vermilion, Illinois
Son, age 7
Vermilion, Illinois · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Vermilion-County, Illinois
Son, age 17
Vermilion-County, Illinois · implied b. ~1923 — 7 household members
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville (Outside) |
| 1935 Residence (County) | Vermilion |
| Occupation | Del. Boy |
| Industry | Ice and Truck |
| Class of Worker | PW |
| Hours Worked | 49 |
| Income (1939) | 90 |
| Highest Grade | 8 |
| 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 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 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
Ralph Thomas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Horace Thomas
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thomas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Thomas
Sibling · 1940 · age 9
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 — Vermilion-County, Illinois
Open full size
1940 US Federal Census — Vermilion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00898-00640)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Moore | 12 | son | — | Illinois |
| 42 | Earl Franklin Moore | 10 | son | — | Illinois |
| 43 | Chester Deering | 48 | lodger | Laborer | Illinois |
| 44 | Horace Thomas | 40 | head | Mattress Finisher | Illinois |
| 45 | Bertha Thomas | 35 | wife | — | Illinois |
| 46 | Horace Jr Thomas | 19 | son | Laborer | Illinois |
| 47 | Jack Thomas THIS PERSON | 17 | son | Del. Boy | Illinois |
| 48 | Ralph Thomas | 15 | son | Helper | Illinois |
| 49 | Helen Thomas | 9 | daughter | — | Illinois |
| 50 | Gerald Thomas | 9 | son | — | Illinois |
| 51 | Albert Foalls | 35 | head | Laborer | Illinois |
| 52 | Ruby Foalls | 33 | wife | — | Illinois |
| 53 | Albert A Foalls | 12 | son | — | Illinois |
| 54 | Kenneth W Foalls | 10 | son | — | Illinois |
| 55 | Warren C Foalls | 7 | son | — | Illinois |
| 56 | Marilyn A Foalls | 3 | daughter | — | Illinois |
| 57 | Virginia A Foalls | 0 | daughter | — | Illinois |
| 58 | William Fenton | 61 | head | Miner | New York |
| 59 | Daisy Fenton | 57 | wife | — | Illinois |
| 60 | Hazel Fenton | 36 | daughter | Stenographer | Illinois |
| 61 | Donald Fenton | 35 | son | Miner | Illinois |
| 62 | Albert Gubre | 66 | head | Miner | Illinois |
| 63 | Mamie Gubre | 63 | wife | House Keeper | Illinois |
| 64 | Norman Gubre | 28 | son | Miner | Illinois |
| 65 | Herald Gubre | 23 | son | Laborer | Illinois |
| 66 | Walter Boyd | 39 | head | Fireman | Illinois |
| 67 | Marguerite Boyd | 34 | wife | — | Illinois |
| 68 | Walter Boyd | 14 | son | — | Michigan |
| 69 | Dorothy Boyd | 12 | daughter | — | Michigan |
| 70 | George Foote | 40 | head | Furnace Man | Illinois |
| 71 | Viola Foote | 35 | wife | — | Illinois |
| 72 | Geneva Foote | 15 | daughter | — | Illinois |
| 73 | Herbert Foote | 11 | son | — | Illinois |
| 74 | Peggy Jean Foote | 11 | daughter | — | Illinois |
| 75 | Arnold Kelley | 30 | head | Baker | Indiana |
| 76 | Elizabeth Kelley | 29 | wife | — | Illinois |
| 77 | Audrey Jean Kelley | 10 | daughter | — | Illinois |
| 78 | Colleen Kelley | 5 | daughter | — | Illinois |
| 79 | Charles C Beam | 40 | head | Painter + Dec | Indiana |
| 80 | Pearl Beam | 22 | wife | — | Illinois |
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)