TC
Thomas Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Campbell across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents William & Annie — first a head (b.~1906), then head of a 4-person household.
Age 34
b. ~1906
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Campbell |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Express Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 420 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Chauffeur |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1906 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Marilyn Campbell | Daughter | — | 3 | ~1937 |
| Arlene Campbell | Daughter | — | 2 | ~1938 |
| Thomas Campbell | Head | — | 34 | ~1906 |
| Mary Campbell | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 22
Cook, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Furniture |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 34
Cook-County, Illinois · implied b. ~1906 — 4 household members
| Surname | Campbell |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Chauffeur |
| Industry | Express Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 420 |
| Highest Grade | No 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 Thomas Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Campbell (~0.92 confidence) and mother Annie Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Campbell
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Annie Campbell
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Campbell
Head · 1940 · age 34 · b. ~1906 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00982-00720)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jacob Scharf | 69 | Head | Elevator Man | Germany |
| 2 | Mary Scharf | 65 | Wife | — | Germany |
| 3 | John Scharf | 39 | Son | Meat Handler | Illinois |
| 4 | Marie Scharf | 21 | Daughter | — | Illinois |
| 5 | Thomas Scharf | 4 | Son | — | Illinois |
| 6 | Dante Orsini | 34 | Head | Inspector | Italy |
| 7 | Bernice Orsini | 30 | Wife | — | Tennessee |
| 8 | James Groppi | 35 | Head | Master Carter | Illinois |
| 9 | Martha Groppi | 29 | Wife | — | Illinois |
| 10 | Martha Jane Groppi | 3 | Daughter | — | Illinois |
| 11 | Myrtle Ann Groppi | 1 | Daughter | — | Illinois |
| 12 | Owen Hulse | 64 | Head | — | Illinois |
| 13 | Owen Hulse | 44 | Son | Printer | Illinois |
| 14 | Ethel D. Hulse | 32 | Daughter | Cooks Helper | Missouri |
| 15 | Lemuel W. Bellanger | 65 | Head | Carpenter | Missouri |
| 16 | Carrie M. Bellanger | 65 | Wife | — | New York |
| 17 | Donald Zonnehill | 41 | Head | — | Iowa |
| 18 | Erna Zonnehill | 42 | Wife | — | Iowa |
| 19 | Lorraine Zonnehill | 18 | Daughter | — | Iowa |
| 20 | Deane Zonnehill | 17 | Son | — | Nebraska |
| 21 | Nora Powrie | 63 | Head | — | Eire |
| 22 | Beatrice Powrie | 21 | Daughter | Stenographer | Illinois |
| 23 | Gladys Heard | 36 | Head | Waitress | Illinois |
| 24 | William J. Burden | 71 | Lodger | Janitor | Ohio |
| 25 | Thomas Campbell THIS PERSON | 34 | Head | Chauffeur | Illinois |
| 26 | Mary Campbell | 28 | Wife | — | Illinois |
| 27 | Marilyn Campbell | 3 | Daughter | — | Illinois |
| 28 | Arlene Campbell | 2 | Daughter | — | Illinois |
| 29 | Fred Durand | 37 | Head | Shipping Clerk | Illinois |
| 30 | Effie Durand | 63 | Mother | — | French Canada |
| 31 | John Durand | 67 | Father | — | French Canada |
| 32 | Michael Ferriter | 34 | Head | Freight Handler | Eire |
| 33 | Bride Ferriter | 34 | Wife | — | Eire |
| 34 | Eillen Ferriter | 5 | Daughter | — | Illinois |
| 35 | Michael Jr. Ferriter | 2 | Son | — | Illinois |
| 36 | James Farrell | 39 | Head | Laborer | Eire |
| 37 | Catherine Farrell | 35 | Wife | — | Illinois |
| 38 | Mary J. Farrell | 10 | Daughter | — | Illinois |
| 39 | James Jr. Farrell | 9 | Son | — | Illinois |
Pedigree Summary
Thomas
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)