AC
Arthur Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Arthur Cooper across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Elizabeth — first a head (b.~1895), then head of a 3-person household.
Age 45
b. ~1895
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Bill Posting |
| Industry | Advertising Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H-4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bill Posting |
| Township / Ward | E St Louis |
| Est. Birth Year | ~1895 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Arthur | Age | Birth yr |
|---|---|---|---|---|
| Wilhelmina Cooper | Spouse | — | 35 | ~1905 |
| Arthur Cooper | Head | — | 45 | ~1895 |
| Robert Cooper | Son | — | 10 | ~1930 |
Census Appearances
1920
St Clair, …
Son, age 25
St Clair, Illinois · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Bill Poster |
| Industry | Montgomery 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 Clair, …
Head, age 35
St Clair, Illinois · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Bill Poster |
| Industry | Signs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Head, age 45
St.-Clair-County, Illinois · implied b. ~1895 — 3 household members
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | St. Clair |
| Occupation | Bill Posting |
| Industry | Advertising Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H-4 |
| 1935 Residence | Illinois |
| 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 Arthur Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Cooper (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Cooper
b. ~1846
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Cooper
Head · 1940 · age 45 · b. ~1895 · 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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00881-01021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dave Wilson | 34 | Head | Engineer | Illinois |
| 42 | Alice Wilson | 30 | Wife | — | Illinois |
| 43 | Dave Jr Wilson | 9 | Son | — | Illinois |
| 44 | Doris Wilson | 3 | Daughter | — | Illinois |
| 45 | Arthur Cooper THIS PERSON | 45 | Head | Bill Posting | Illinois |
| 46 | Wilhelmina Cooper | 35 | Wife | — | Illinois |
| 47 | Robert Cooper | 10 | Son | — | Illinois |
| 48 | Walter Gaake | 43 | Head | — | Illinois |
| 49 | Minnie Gaake | 38 | Wife | — | Illinois |
| 50 | Dorothy Gaake | 16 | Daughter | — | Illinois |
| 51 | Robert Pierpont | 31 | Head | Asst Supt Building | Illinois |
| 52 | June Pierpont | 24 | Wife | — | Iowa |
| 53 | Jane Ann Pierpont | 3 | Daughter | — | Illinois |
| 54 | Robert Jr Pierpont | 2 | Son | — | Illinois |
| 55 | Carol Pierpont | 0 | Daughter | — | Illinois |
| 56 | George Herr | 53 | Head | Engineer | Illinois |
| 57 | Lydia Herr | 50 | Wife | — | Indiana |
| 58 | Virginia Herr | 21 | Daughter | — | Illinois |
| 59 | James Herr | 11 | Son | — | Illinois |
| 60 | Robert Herr | 9 | Son | — | Illinois |
| 61 | Charles Muddleton | 33 | Head | Yard Clerk | Illinois |
| 62 | Catherine Muddleton | 29 | Wife | — | Illinois |
| 63 | James Muddleton | 9 | Son | — | Illinois |
| 64 | Edward Muddleton | 7 | Son | — | Illinois |
| 65 | Lloyd Muddleton | 5 | Son | — | Illinois |
| 66 | Thomas Muddleton | 2 | Son | — | Illinois |
| 67 | Louis P. Finen | 26 | Head | Bell Hop | Illinois |
| 68 | Rosemarie Finen | 26 | Wife | — | Illinois |
| 69 | Mary B Finen | 1 | Daughter | — | Illinois |
| 70 | Robert Bell | 32 | Head | Truck Driver | Tennessee |
| 71 | Helen Bell | 27 | Wife | — | Illinois |
| 72 | Elinor Bell | 4 | Daughter | — | Illinois |
| 73 | Samuel Jenkins | 22 | Head | Laborer | Illinois |
| 74 | Geraldine Jenkins | 21 | Wife | — | Missouri |
| 75 | Harry Wishamp | 30 | Head | Mechanic | Illinois |
| 76 | Florence Wishamp | 24 | Wife | — | Illinois |
| 77 | Betty Jean Wishamp | 3 | Daughter | — | Illinois |
| 78 | John Peek | 47 | Head | Barber | Tennessee |
| 79 | Mary Lou Peek | 39 | Wife | — | Tennessee |
| 80 | Marietta Peek | 21 | Daughter | — | Tennessee |
Pedigree Summary
Arthur
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)