AC
Arthur Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Illinois
Our Model Tree links this Arthur Cooper across the 1930 and 1940 US Censuses in Adams-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Illinois |
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Payson Twp. |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Occupation | Laborer |
| Industry | NYA |
| Class of Worker | GW |
| Hours Worked | 13 |
| Income (1939) | 99 |
| Highest Grade | G 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Payson Twp |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Arthur | Age | Birth yr |
|---|---|---|---|---|
| Bessie Cooper | Head | — | 50 | ~1890 |
| Idola Cooper | Daughter | — | 1 | ~1939 |
| Virgil Cooper | Son | — | 27 | ~1913 |
| Janey Cooper | Daughter | — | 14 | ~1926 |
| Arthur Cooper | Son | — | 20 | ~1920 |
| Ralph Cooper | Son | — | 18 | ~1922 |
| Elmer Cooper | Son | — | 22 | ~1918 |
| Katherine Cooper | Daughter | — | 13 | ~1927 |
| Vernon Cooper | Son | — | 11 | ~1929 |
Census Appearances
1930
Adams, Illinois
Son, age 10
Adams, Illinois · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Adams-County, Illinois
Son, age 20
Adams-County, Illinois · implied b. ~1920 — 9 household members
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Payson Twp. |
| 1935 Residence (County) | Adams |
| Occupation | Laborer |
| Industry | NYA |
| Class of Worker | GW |
| Hours Worked | 13 |
| Income (1939) | 99 |
| Highest Grade | G 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 Arthur Cooper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Arthur Cooper
Son · 1940 · age 20 · b. ~1920 · Illinois
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Sibling
Katherine Cooper
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Cooper
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Cooper
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Cooper
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Idola Cooper
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janey Cooper
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virgil Cooper
Sibling · 1940 · age 27
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 — Adams-County, Illinois
Open full size
1940 US Federal Census — Adams-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00756-00555)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Vahle | 9 | Son | — | Illinois |
| 2 | Bessie Cooper | 50 | Head | Housework At Home | Illinois |
| 3 | Virgil Cooper | 27 | Son | New Worker | Illinois |
| 4 | Elmer Cooper | 22 | Son | Laborer | Illinois |
| 5 | Arthur Cooper THIS PERSON | 20 | Son | Laborer | Illinois |
| 6 | Ralph Cooper | 18 | Son | Laborer | Illinois |
| 7 | Janey Cooper | 14 | Daughter | School | Illinois |
| 8 | Katherine Cooper | 13 | Daughter | School | Illinois |
| 9 | Vernon Cooper | 11 | Son | — | Illinois |
| 10 | Idola Cooper | 1 | Daughter | — | Illinois |
| 11 | Perry E. Kuhlman | 44 | Head | Farmer | Illinois |
| 12 | Helen S. Kuhlman | 40 | Wife | Housework | Illinois |
| 13 | Merl P. Kuhlman | 18 | Son | School | Illinois |
| 14 | Donal E. Kuhlman | 6 | Son | — | Illinois |
| 15 | Frank W. Becker | 44 | Head | Farmer | Illinois |
| 16 | Gladys M. Becker | 33 | Wife | Housewife | Illinois |
| 17 | Rosinda Becker | 6 | Daughter | — | Illinois |
| 18 | Fred L. Becker | 71 | Father | Retired Farmer | Germany |
| 19 | William A. Brown | 71 | Head | Farmer | Illinois |
| 20 | Angella Brown | 49 | Wife | Housewife | Maine |
| 21 | Robert Brown | 14 | Son | — | Illinois |
| 22 | Richard C. Slocum | 36 | Head | Mail Clerk | Illinois |
| 23 | Alice Slocum | 32 | Wife | Housewife | Illinois |
| 24 | Robert Slocum | 12 | Son | — | Illinois |
| 25 | Shirley Slocum | 3 | Daughter | — | Illinois |
| 26 | Alta Fletcher | 60 | Mother-in-law | Housewife | Illinois |
| 27 | Emmer Forgy | 71 | Head | Farmer | Illinois |
| 28 | William R. Forgy | 29 | Son | Farmer | Illinois |
| 29 | Theresa Forgy | 28 | Daughter-in-law | Housewife | Missouri |
| 30 | Barbara Jean Forgy | 4 | Granddaughter | — | Illinois |
| 31 | Mary Ann Forgy | 3 | Granddaughter | — | Illinois |
| 32 | Fred H. Mathes | 50 | Head | Road Commissioner | Illinois |
| 33 | John W. Gallagher | 26 | Brother-in-law | Construction Road | Illinois |
| 34 | Abby M. Gallagher | 21 | Housekeeper | Housekeeper | Illinois |
| 35 | Dorothy W. Gallagher | 3 | Daughter | — | Illinois |
| 36 | Mary F. Gallagher | 2 | Daughter | — | Illinois |
| 37 | Fred J. Althoff | 76 | Head | Farmer | Illinois |
| 38 | Edith A. Althoff | 42 | Wife | Domestic | Illinois |
| 39 | Milton G. Vahle | 28 | Head | Farmer | Illinois |
| 40 | Emma Vahle | 28 | Wife | Housewife | 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)