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John Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mahoning-County, Ohio
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Mahoning-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 4-person household.
Age 68
b. ~1872
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahoning-County, Ohio |
| Surname | Cooper |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Commissioner |
| Industry | State Ohio |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 3000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Commissioner |
| Township / Ward | Youngstown |
| Est. Birth Year | ~1872 |
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 |
|---|---|---|---|---|
| John Cooper | Head | — | 68 | ~1872 |
| Reed Cooper | Son | — | 36 | ~1904 |
| Gordon Cooper | Son | — | 23 | ~1917 |
| Elizabeth Cooper | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Mahoning, Ohio
Head, age 43
Mahoning, Ohio · implied b. ~1877 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Congressman |
| Industry | United States |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | England |
| Year of Naturalization | 1892 |
| Birthplace (normalized) | england |
1930
Mahoning, Ohio
Head, age 57
Mahoning, Ohio · implied b. ~1873 — 6 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 | 57 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1881 |
| Age at First Marriage | 22 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Congressman |
| Industry | State |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 10000.00 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Mahoning-County, Ohio
Head, age 68
Mahoning-County, Ohio · implied b. ~1872 — 4 household members
| Surname | Cooper |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Naturalization Status | Naturalized |
| Occupation | Commissioner |
| Industry | State Ohio |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 3000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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.
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This person
Anchor record
John Cooper
Head · 1940 · age 68 · b. ~1872 · Ohio
★ 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 — Mahoning-County, Ohio
Open full size
1940 US Federal Census — Mahoning-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03271-00551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert S. Pennell | 3 | Son | — | Ohio |
| 2 | Francine Pennell | 0 | Daughter | — | Ohio |
| 3 | William Horner | 39 | Head | Salesman | Illinois |
| 4 | Helen G. Horner | 38 | Wife | — | Illinois |
| 5 | William Horner | 3 | Son | — | Ohio |
| 6 | Greta Merritt | 49 | Head | — | Ohio |
| 7 | James Merritt | 78 | Father | Engineer | Ohio |
| 8 | Ray Shoaff | 42 | Head | Conductor | Ohio |
| 9 | Katherine Shoaff | 41 | Wife | — | Ohio |
| 10 | Rita A. Shoaff | 20 | Daughter | — | Ohio |
| 11 | Samuel Borkie | 42 | Head | Salesman | New York |
| 12 | Sara Borkie | 36 | Wife | — | New York |
| 13 | Charles Creighton | 31 | Head | Salesman | Penna |
| 14 | Charlotte L. Creighton | 28 | Wife | — | Penna |
| 15 | Judith Creighton | 1 | Daughter | — | Penna |
| 16 | Martha Mccollum | 52 | Head | — | England |
| 17 | R. Dean Mccollum | 26 | Son | Press Operator | Penna |
| 18 | Alfred C. Park | 45 | Head | Superintendent | Ohio |
| 19 | Adelaide Park | 54 | Wife | — | Ohio |
| 20 | Keith E. Park | 20 | Son | News Walker | Ohio |
| 21 | Henry R. Sullivan | 42 | Head | Salesman | Minn |
| 22 | Agnes Sullivan | 35 | Wife | — | Minn |
| 23 | Anna Welshman | 50 | Head | — | Ohio |
| 24 | Julius E. Johnson | 51 | Head | Accountant | Michigan |
| 25 | Grace Johnson | 45 | Wife | — | Michigan |
| 26 | Robert H. Johnson | 23 | Son | Time Study | Michigan |
| 27 | H. K. Miller | 71 | Head | — | Penna |
| 28 | Rebecca Miller | 75 | Wife | — | England |
| 29 | Frank O. Leigh | 34 | Head | Manager | Ohio |
| 30 | Gertrude Leigh | 63 | Mother | — | Penna |
| 31 | John G. Cooper THIS PERSON | 68 | Head | Commissioner | England |
| 32 | Elizabeth Cooper | 62 | Wife | — | England |
| 33 | Reed R. Cooper | 36 | Son | Foreman | Ohio |
| 34 | Gordon S. Cooper | 23 | Son | Salesman | Ohio |
| 35 | Nettie Friedrich | 49 | Head | — | Indiana |
| 36 | Carl B. Friedrich | 26 | Son | Credit Manager | Indiana |
| 37 | Margaret Friedrich | 25 | Daughter | Publicity | Indiana |
| 38 | John Kneen | 24 | Head | Salesman | Ohio |
| 39 | Helen E. Kneen | 24 | Wife | — | Ohio |
| 40 | Clifford M. Griffin | 42 | Head | Display Manager | 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)