JT
Jack Thomas — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Indiana
Our Model Tree links this Jack Thomas across the 1920 and 1930 US Censuses in Marion, Indiana (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 6-person household.
Age 19
b. ~1911
Male
Son
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | Salesman |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Salesman |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1911 |
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 1930 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Martha Thomas | Head | — | 60 | ~1870 |
| Jack Thomas | Son | — | 19 | ~1911 |
| Gail Thomas | Son | — | 25 | ~1905 |
| June Thomas | Son | — | 27 | ~1903 |
| Robert Thomas | Son | — | 16 | ~1914 |
| Cornelia Thomas | Daughter | — | 31 | ~1899 |
Census Appearances
1920
Marion, Indiana
Son, age 9
Marion, Indiana · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 19
Marion, Indiana · implied b. ~1911 — 6 household members
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Salesman |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 (1920 and 1930) in Marion, Indiana, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Thomas
Son · 1930 · age 19 · b. ~1911 · Indiana
★ You are viewing this record
Sibling
Cornelia Thomas
Sibling · 1930 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Thomas
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gail Thomas
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Thomas
Sibling · 1930 · age 16
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
1930 US Federal Census — Marion, Indiana
Open full size
1930 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel609:0262)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martha Thomas | 60 | Head | — | Indiana |
| 2 | Cornelia Thomas | 31 | Daughter | Cashier | Indiana |
| 3 | June Thomas | 27 | Son | Salesman | Indiana |
| 4 | Gail Thomas | 25 | Son | Turbine Operator | Indiana |
| 5 | Jack Thomas THIS PERSON | 19 | Son | Salesman | Indiana |
| 6 | Robert Thomas | 16 | Son | — | Indiana |
| 7 | Mary Goode | 48 | Head | — | Indiana |
| 8 | Helen Goode | 22 | Daughter | — | Indiana |
| 9 | Marion Goode | 19 | Son | File Clerk | Indiana |
| 10 | Cecil Goode | 14 | Son | — | Indiana |
| 11 | Harold P Hinshaw | 25 | Son-in-law | Condensor | Indiana |
| 12 | Elva Hinshaw | 24 | Daughter | Cashier | Indiana |
| 13 | Mary A Semple | 63 | Head | — | Kentucky |
| 14 | Howard Semple | 21 | Son | Accountant | Kentucky |
| 15 | Leona Twohy | 30 | Boarder | Operator | Indiana |
| 16 | Joseph W Johnson | 37 | Head | Postal Farmer | Indiana |
| 17 | June Johnson | 30 | Wife | — | Illinois |
| 18 | Josephine Johnson | 11 | Daughter | — | Indiana |
| 19 | Julia Poland | 61 | Mother-in-law | — | Illinois |
| 20 | Mary Gregory | 28 | Head | Typist | Indiana |
| 21 | Anna Vossler | 62 | Boarder | — | Indiana |
| 22 | Russell W Kinder | 32 | Head | Electrician | Indiana |
| 23 | Ethel Kinder | 22 | Wife | — | Indiana |
| 24 | Wm Mcclanahan | 27 | Boarder | Truck Driver | Indiana |
| 25 | Harold Rhine | 26 | Head | Linotype Man | Ohio |
| 26 | Dolores Rhine | 26 | Wife | — | Colorado |
| 27 | Marjory Rhine | 8 | Daughter | — | Indiana |
| 28 | Fred Rhine | 4 | Son | — | Indiana |
| 29 | Jackie Lee Rhine | 1 | Son | — | Indiana |
| 30 | Frank P Holdaway | 60 | Head | Turbine Operator | Illinois |
| 31 | Mary E Holdaway | 50 | Wife | — | Illinois |
| 32 | Herman B Ross | 26 | Head | Welder | Indiana |
| 33 | Helen Ross | 24 | Wife | — | Kentucky |
| 34 | Barbara Jean Ross | 1 | Daughter | — | Indiana |
| 35 | Robert W Hopkins | 27 | Head | Commercial Artist | Ohio |
| 36 | Rita Hopkins | 25 | Wife | — | Missouri |
| 37 | Vivian Hopkins | 7 | Daughter | — | Indiana |
| 38 | Robert L Hopkins | 2 | Son | — | Indiana |
| 39 | Walter H Rasmussen | 32 | Head | Connector | Indiana |
| 40 | Laura Rasmussen | 29 | Wife | — | Indiana |
| 41 | Robert D Barnes | 35 | Head | Salesman | Indiana |
| 42 | Margaret Barnes | 33 | Wife | — | Indiana |
| 43 | Robert H Barnes | 13 | Son | — | Indiana |
| 44 | Dorothy L Barnes | 10 | Daughter | — | Indiana |
| 45 | Earl D Jewett | 50 | Head | Doctor | Indiana |
| 46 | Maude Jewett | 45 | Wife | — | Indiana |
| 47 | Justine Jewett | 22 | Daughter | — | Indiana |
| 48 | Fern Jewett | 21 | Daughter | — | Indiana |
| 49 | Clarence B Scott | 44 | Head | Cashier | Indiana |
| 50 | Ruth Scott | 38 | Wife | — | Indiana |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)