JC
John Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calhoun-County, Michigan
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Calhoun-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.
Age 63
b. ~1877
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, Michigan |
| Surname | Cooper |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Pennfield Township |
| 1935 Residence (County) | Calhoun |
| Additional Details | |
| Occupation | Machine Operator |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 493 |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Machine Operator |
| Township / Ward | Pennfield Township |
| Est. Birth Year | ~1877 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Lois Cooper | Daughter | — | 20 | ~1920 |
| John Cooper | Head | — | 63 | ~1877 |
| John Cooper | Son | — | 23 | ~1917 |
| Olive Cooper | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Calhoun, Michigan
Head, age 43
Calhoun, Michigan · implied b. ~1877 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Kansas |
| Father's Birthplace | United States |
| Mother's Birthplace | Ohio |
| Occupation | Doctor |
| Industry | Medical |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Calhoun, Michigan
Head, age 53
Calhoun, Michigan · implied b. ~1877 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ohio |
| Occupation | Doctor |
| Industry | General Med. |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 55 |
| Radio Set | R |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Calhoun-County, Michigan
Head, age 63
Calhoun-County, Michigan · implied b. ~1877 — 4 household members
| Surname | Cooper |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Pennfield Township |
| 1935 Residence (County) | Calhoun |
| Occupation | Machine Operator |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 493 |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 John Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cooper
Head · 1940 · age 63 · b. ~1877 · Michigan
★ 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 — Calhoun-County, Michigan
Open full size
1940 US Federal Census — Calhoun-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01737-00705)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bernard Gore | 19 | Son | Laborer | Michigan |
| 42 | Lloyd Gore | 16 | Son | — | Michigan |
| 43 | Dorothy Gore | 11 | Daughter | — | Michigan |
| 44 | Glenn Green | 23 | Head | Tenant | Michigan |
| 45 | Beulah P. Green | 26 | Wife | — | Michigan |
| 46 | Wanda Green | 5 | Daughter | — | Michigan |
| 47 | Ervin Green | 3 | Son | — | Michigan |
| 48 | Wanetta Green | 1 | Daughter | — | Michigan |
| 49 | William Furnin | 64 | Head | Farmer | Michigan |
| 50 | Bertha E. Furnin | 65 | Wife | — | Michigan |
| 51 | Fred C. Moore | 68 | Head | Farmer | Michigan |
| 52 | Myrtle G. Moore | 63 | Wife | — | Michigan |
| 53 | Charles Moore | 45 | Son | Farm Laborer | Michigan |
| 54 | Ralph Moore | 42 | Son | Farm Laborer | Michigan |
| 55 | Walter Jr. Moore | 13 | Grandson | — | Michigan |
| 56 | Dewey H. Link | 41 | Head | Electrical Inspector | North Carolina |
| 57 | Anna Pearl Link | 41 | Wife | — | North Carolina |
| 58 | Marilyn Link | 14 | Daughter | — | Michigan |
| 59 | Robert Link | 13 | Son | — | Michigan |
| 60 | Betty Sue Link | 11 | Daughter | — | Michigan |
| 61 | David Link | 2 | Son | — | Michigan |
| 62 | John E. Cooper THIS PERSON | 63 | Head | Machine Operator | Kansas |
| 63 | Olive M. Cooper | 61 | Wife | — | Indiana |
| 64 | John E. Jr. Cooper | 23 | Son | — | Michigan |
| 65 | Lois M. Cooper | 20 | Daughter | — | Michigan |
| 66 | Howard Cramer | 57 | Head | Household Appliances | Ohio |
| 67 | Floy Cramer | 58 | Wife | — | Nebraska |
| 68 | Lillian (A.) Cramer | 55 | Sister | — | Nebraska |
| 69 | Earl Yakey | 42 | Head | Machinist Inspector | Michigan |
| 70 | Veronica Yakey | 38 | Wife | — | New York |
| 71 | Earlene Yakey | 17 | Daughter | — | Michigan |
| 72 | Beverly Yakey | 15 | Daughter | — | Michigan |
| 73 | Shirley Yakey | 14 | Daughter | — | Michigan |
| 74 | Cecil W. Finch | 56 | Head | Bricklayer | Ohio |
| 75 | I. Leone Finch | 48 | Wife | — | Michigan |
| 76 | John Finch | 27 | Son | Inspector | Ohio |
| 77 | Harold Finch | 19 | Son | Maintenance | Michigan |
| 78 | Mary Jean Finch | 16 | Daughter | — | Michigan |
| 79 | Kathryn Finch | 13 | Daughter | — | Michigan |
| 80 | Wayne Q. Warren | 37 | Head | Farmer | Michigan |
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)