AC
Arthur Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Logan-County, Illinois
Our Model Tree links this Arthur Cooper across the 1920, 1930 and 1940 US Censuses in Logan-County, Illinois (XGBoost, ~Confirmed), with identified parents Fred & Ira — first a son (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Logan-County, Illinois |
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Chestnut |
| 1935 Residence (County) | Logan |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Chestnut Ill |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Arthur | Age | Birth yr |
|---|---|---|---|---|
| Arthur Cooper | Son | — | 34 | ~1906 |
| Dorothy Cooper | Daughter | — | 20 | ~1920 |
| Ira Cooper | Head | — | 64 | ~1876 |
| Adeline Cooper | Spouse | — | 59 | ~1881 |
| James Cooper | Other | — | ~1940 |
Census Appearances
1920
Logan, Illinois
Son, age 14
Logan, Illinois · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Logan, Illinois
Son, age 24
Logan, Illinois · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Arthur B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Day Labor |
| Class of Worker | 7899 W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Logan-County, Illinois
Son, age 34
Logan-County, Illinois · implied b. ~1906 — 5 household members
| Surname | Cooper |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Chestnut |
| 1935 Residence (County) | Logan |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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: father Fred Cooper (~0.92 confidence) and father Ira Cooper (~0.92 confidence) and father John Cooper (~0.92 confidence) and mother Adeline Cooper (~0.92 confidence) and mother Adeline Cooper (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Cooper
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Ira Cooper
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Cooper
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Adeline Cooper
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Adeline Cooper
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Cooper
Son · 1940 · age 34 · b. ~1906 · Illinois
★ You are viewing this record
Sibling
Dorothy Cooper
Sibling · 1940 · age 20
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 — Logan-County, Illinois
Open full size
1940 US Federal Census — Logan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00838-00025)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elsie H. Gerhardt | 41 | Wife | — | Illinois |
| 2 | Harry O. Gerhardt | 19 | Son | Farm Labor | Illinois |
| 3 | Hilda A. Gerhardt | 18 | Daughter | Maid | Illinois |
| 4 | Arline E. Gerhardt | 14 | Daughter | — | Illinois |
| 5 | Dean H. Gerhardt | 5 | Son | — | Illinois |
| 6 | Louis Renchler | 65 | Head | Help Farming | Illinois |
| 7 | Minnie Renchler | 64 | Wife | — | Illinois |
| 8 | Leonore Renchler | 37 | Daughter | Postmistress | Illinois |
| 9 | Harold D. Heft | 30 | Head | Mechanic & Helper | Illinois |
| 10 | Evelyn R. Heft | 27 | Wife | — | Illinois |
| 11 | Joan M. Heft | 2 | Daughter | — | Illinois |
| 12 | Harold A. Heft | 1 | Son | — | Illinois |
| 13 | Geo C. Maus | 61 | Head | Merchant | Illinois |
| 14 | Bertha M. Maus | 44 | Wife | — | Kentucky |
| 15 | Treba E. Maus | 17 | Daughter | — | Illinois |
| 16 | Walker J. Maus | 15 | Son | — | Illinois |
| 17 | Joseph Hiddon | 75 | Father-in-law | — | Kentucky |
| 18 | Leonard F. Mccann | 38 | Head | Restaurant | Illinois |
| 19 | Amy D. Mccann | 36 | Wife | — | Illinois |
| 20 | Don G. Mccann | 10 | Son | — | Illinois |
| 21 | B. C. Schaffenacker | 71 | Head | — | Illinois |
| 22 | A. Clark Fletcher | 66 | Head | Laborer | Illinois |
| 23 | Rosetta Fletcher | 61 | Wife | — | Illinois |
| 24 | Roscoe M. Fletcher | 35 | Son | — | Iowa |
| 25 | Ira F. Cooper | 64 | Head | Laborer | Missouri |
| 26 | Adeline H. Cooper | 59 | Wife | — | Illinois |
| 27 | Arthur Cooper THIS PERSON | 34 | Son | — | Missouri |
| 28 | Dorothy Cooper | 20 | Daughter | — | Illinois |
| 29 | James R. Cooper | 0 | Grandson | — | Illinois |
| 30 | James Yarden | 71 | Head | — | Illinois |
| 31 | Louis L. Buckles | 71 | Head | Farmer | Illinois |
| 32 | Wilbur G. Smith | 42 | Head | Collector | Illinois |
| 33 | Hazel L. Smith | 39 | Wife | — | Illinois |
| 34 | Rosalie E. Smith | 14 | Daughter | — | Illinois |
| 35 | Jean C. Smith | 12 | Daughter | — | Illinois |
| 36 | Floyd Meadows | 60 | Head | Trucker | Indiana |
| 37 | Minnie L. Meadows | 52 | Wife | — | Illinois |
| 38 | Alfred Wilson | 46 | Head | Section Foreman | Illinois |
| 39 | Audrey A. Wilson | 43 | Wife | — | Illinois |
| 40 | Geraldine L. Wilson | 23 | Daughter | Clerk | Illinois |
Pedigree Summary
Arthur + 1 sibling
Gen 1 · 5 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)