JC
James Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Illinois
Our Model Tree links this James Cooper across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 6-person household.
Age 55
b. ~1885
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Illinois |
| Surname | Cooper |
| Given Name | James O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Farrington Twp |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | S. W. |
| Industry | W. P. A. |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 958 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | S. W. |
| Township / Ward | Farrington Twp |
| Est. Birth Year | ~1885 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Patricia Cooper | Daughter | — | 7 | ~1933 |
| Olita Cooper | Daughter | — | 17 | ~1923 |
| James Cooper | Head | — | 55 | ~1885 |
| A Patterson | Other | — | 77 | ~1863 |
| John Cooper | Son | — | 13 | ~1927 |
| Millie Cooper | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Jefferson, Illinois
Head, age 35
Jefferson, Illinois · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Jefferson, Illinois
Head, age 45
Jefferson, Illinois · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Truck |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Jefferson-County, Illinois
Head, age 55
Jefferson-County, Illinois · implied b. ~1885 — 6 household members
| Surname | Cooper |
| Given Name | James O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Farrington Twp |
| 1935 Residence (County) | Jefferson |
| Occupation | S. W. |
| Industry | W. P. A. |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 958 |
| Highest Grade | No 3 |
| 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 James Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cooper
Head · 1940 · age 55 · b. ~1885 · 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 — Jefferson-County, Illinois
Open full size
1940 US Federal Census — Jefferson-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00816-00175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Bradford | 82 | Father | — | Illinois |
| 42 | Almeda Wiggins | 66 | Head | Housewife | Illinois |
| 43 | Eddie D. Wiggins | 44 | Son | Farmer | Illinois |
| 44 | Pearl Fry | 47 | Daughter | Housewife | Illinois |
| 45 | Clayton L. Sledge | 39 | Head | S. W. | Illinois |
| 46 | Bertha D. Sledge | 32 | Wife | Housewife | Illinois |
| 47 | David Sledge | 12 | Son | — | Illinois |
| 48 | Fred W. Reeker | 79 | Head | Farmer | Germany |
| 49 | Anna S. Reeker | 65 | Wife | Housewife | Missouri |
| 50 | Monroe Reeker | 21 | Son | N. Y. A. | Illinois |
| 51 | Mckinley K. Reeker | 39 | Son | Farmer | Missouri |
| 52 | Freda Reeker | 34 | Daughter-in-law | Housewife | Illinois |
| 53 | Dorothy Reeker | 12 | Granddaughter | — | Illinois |
| 54 | Freddie Reeker | 5 | Grandson | — | Illinois |
| 55 | Beverly Reeker | 0 | Granddaughter | — | Illinois |
| 56 | Floyd D. Johnson | 42 | Head | Farmer | Illinois |
| 57 | Gussie Johnson | 48 | Wife | Housewife | Illinois |
| 58 | Delore Johnson | 16 | Son | Farmer Helper | Illinois |
| 59 | Gene Johnson | 13 | Son | — | Illinois |
| 60 | George W. Minor | 61 | Head | Farmer | Illinois |
| 61 | Lena Minor | 56 | Wife | Housewife | Kentucky |
| 62 | Maurice Minor | 25 | Son | Book Keeper | Illinois |
| 63 | Earl Minor | 22 | Son | S. W. | Illinois |
| 64 | Roy Minor | 20 | Son | S. W. | Illinois |
| 65 | Ruth Minor | 18 | Daughter | House Girl | Illinois |
| 66 | Beatrice Minor | 15 | Daughter | House Girl | Illinois |
| 67 | Imogene Minor | 13 | Daughter | Day School | Illinois |
| 68 | James O. Cooper THIS PERSON | 55 | Head | S. W. | Illinois |
| 69 | Millie Cooper | 61 | Wife | Housewife | Illinois |
| 70 | Olita Cooper | 17 | Daughter | House Girl | Illinois |
| 71 | John Cooper | 13 | Son | — | Illinois |
| 72 | Patricia Cooper | 7 | Daughter | — | Illinois |
| 73 | A. William Patterson | 77 | Uncle | — | Illinois |
| 74 | Charles E. Hunt | 79 | Head | — | Illinois |
| 75 | Mary E. Hunt | 74 | Wife | Housewife | Illinois |
| 76 | Lola Evans | 65 | Head | Housewife | Kentucky |
| 77 | Vernon Evans | 34 | Son | Laborer | Illinois |
| 78 | Waziela Evans | 23 | Daughter | Housewife | Illinois |
| 79 | Delmar G. Jones | 70 | Head | Farmer | Illinois |
| 80 | Thula Jones | 68 | 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)