TC
Thomas Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Thomas Cooper across the 1920, 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed), with identified parents Cora — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Cooper |
| Given Name | Thomas M. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Normandy township |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Occupation | salesman |
| Industry | wholesale dry goods |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Salesman |
| Township / Ward | Normandy Township |
| Est. Birth Year | ~1898 |
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 |
|---|---|---|---|---|
| Thomas Cooper | Son | — | 1 | ~1939 |
| Thomas Cooper | Head | — | 42 | ~1898 |
| Leona Cooper | Spouse | — | 40 | ~1900 |
| June Cooper | Daughter | — | 4 | ~1936 |
Census Appearances
1920
St Louis, …
Son, age 22
St Louis, Missouri · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Finisher |
| Industry | Brass Mfg. Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Louis, …
Head, age 32
St Louis, Missouri · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Brakeman |
| Industry | Dry Goods Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 2500 |
| Veteran | O |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Louis-County, Missouri
Head, age 42
St.-Louis-County, Missouri · implied b. ~1898 — 4 household members
| Surname | Cooper |
| Given Name | Thomas M. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Normandy township |
| 1935 Residence (County) | St. Louis |
| Occupation | salesman |
| Industry | wholesale dry goods |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1400 |
| 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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Cora Cooper (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Cora Cooper
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Cooper
Head · 1940 · age 42 · b. ~1898 · Missouri
★ 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 — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02153-00339)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Katherine Petrotti | 22 | daughter | Saleswoman | Missouri |
| 42 | Francis Petrotti | 21 | son | Apprentice | Missouri |
| 43 | Margaret A. Petrotti | 17 | daughter | — | Missouri |
| 44 | Rita Petrotti | 15 | daughter | — | Missouri |
| 45 | Ella Imken | 45 | sister-in-law | — | Missouri |
| 46 | Mary Ryan | 74 | head | — | Missouri |
| 47 | Joseph Ryan | 39 | head | Machine Repairman | Missouri |
| 48 | William Mamie | 62 | head | Miner | Germany |
| 49 | Anna Mamie | 56 | wife | — | Illinois |
| 50 | Everett Mamie | 24 | son | Truck Driver | Illinois |
| 51 | Vera Mamie | 21 | daughter | — | Illinois |
| 52 | William Jr. Mamie | 17 | son | — | Illinois |
| 53 | Oliver Mamie | 15 | son | — | Illinois |
| 54 | Dale Mamie | 9 | son | — | Missouri |
| 55 | Glen V. Farmer | 36 | head | Supervisor | Missouri |
| 56 | Florence Farmer | 34 | wife | — | Missouri |
| 57 | Caroline Farmer | 13 | daughter | — | Missouri |
| 58 | Marilyn Farmer | 9 | daughter | — | Missouri |
| 59 | Willard Farmer | 5 | son | — | Missouri |
| 60 | August H. Dahman | 78 | head | — | Missouri |
| 61 | Evelyn Dahman | 64 | wife | — | Missouri |
| 62 | Horace Dahman | 38 | son | — | Missouri |
| 63 | George Esphoret | 42 | head | Proprietor | Missouri |
| 64 | Evelyn Esphoret | 26 | wife | Sales Clerk | Missouri |
| 65 | George Jr. Esphoret | 19 | son | Sales Clerk | Missouri |
| 66 | Charles Wells | 42 | head | Lawyer | Illinois |
| 67 | Frances Wells | 32 | wife | — | New York |
| 68 | Elmer Wells | 69 | father | — | Illinois |
| 69 | Mary Elizabeth Wells | 66 | mother | — | Illinois |
| 70 | Jacob Demuth | 45 | head | Foreman | Missouri |
| 71 | Charlotte Demuth | 44 | wife | — | Missouri |
| 72 | Joseph Mandino | 39 | head | Coal Dealer | Italy |
| 73 | Gertrude Mandino | 30 | wife | Dress Operator | Kentucky |
| 74 | Joseph Moran | 27 | head | Desk Clerk | Missouri |
| 75 | Josephine Moran | 26 | wife | — | Illinois |
| 76 | Edward L. Moran | 1 | son | — | Missouri |
| 77 | Thomas M. Cooper THIS PERSON | 42 | head | Salesman | Illinois |
| 78 | Leona Cooper | 40 | wife | — | Missouri |
| 79 | June Frances Cooper | 4 | daughter | — | Missouri |
| 80 | Thomas W. Cooper | 1 | son | — | Missouri |
Pedigree Summary
Thomas
Gen 1 · 1 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)