JC
John Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 5-person household.
Age 57
b. ~1883
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Cooper |
| Given Name | John Henry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | R |
| Additional Details | |
| Occupation | Farm Manager |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 527 |
| Highest Grade | No 8 |
| 1935 Residence | Arizona |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Farm Manager |
| Township / Ward | Supervisorial District No 1 |
| Est. Birth Year | ~1883 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Lois Cooper | Daughter | — | 10 | ~1930 |
| Maxine Cooper | Daughter | — | 18 | ~1922 |
| John Cooper | Head | — | 57 | ~1883 |
| Howard Cooper | Son | — | 15 | ~1925 |
| Gertrude Cooper | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Maricopa, Arizona
Head, age 37
Maricopa, Arizona · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Georgia |
| Mother's Birthplace | North Africa |
| Occupation | Farmer |
| Industry | General |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Maricopa, Arizona
Head, age 46
Maricopa, Arizona · implied b. ~1884 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 26 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | South Africa |
| Occupation | Dairyman |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Maricopa-County, Arizona
Head, age 57
Maricopa-County, Arizona · implied b. ~1883 — 5 household members
| Surname | Cooper |
| Given Name | John Henry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | R |
| Occupation | Farm Manager |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 527 |
| Highest Grade | No 8 |
| 1935 Residence | Arizona |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 57 · b. ~1883 · Arizona
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00106-00933)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ward L. Drain | 42 | Head | Farmer | Kansas |
| 2 | Carrie V. Drain | 38 | Wife | — | Missouri |
| 3 | George Bernard Drain | 19 | Stepson | — | California |
| 4 | Angel Gutierrez | 33 | Head | Labor | Mexico |
| 5 | Gertrudis Gutierrez | 37 | Wife | — | Arizona |
| 6 | Luis Gutierrez | 10 | Son | — | Arizona |
| 7 | Veronica Gutierrez | 9 | Daughter | — | Arizona |
| 8 | Juanita Gutierrez | 6 | Daughter | — | Arizona |
| 9 | Martin Alban Schuele | 40 | Head | Farmer | Arizona |
| 10 | Helen M. Schuele | 42 | Wife | — | New York |
| 11 | John Martin Schuele | 73 | Father | — | Germany |
| 12 | Aneta B. Hughes | 52 | Head | — | Texas |
| 13 | Ernest Hughes | 23 | Son | Worker | Arizona |
| 14 | Emmett Hughes | 22 | Son | Feeder | Arizona |
| 15 | Boyd Hughes | 17 | Son | — | Arizona |
| 16 | Patrick Hughes | 12 | Son | — | Arizona |
| 17 | Edwardo Terrazas | 30 | Head | — | Mexico |
| 18 | Mercedes Terrazas | 68 | Wife | — | Mexico |
| 19 | Antonio Terrazas | 38 | Son | — | Arizona |
| 20 | Edwardo Terrazas | 30 | Son | — | Arizona |
| 21 | Jose Herrera | 33 | Son-in-law | — | Mexico |
| 22 | Mercedes Herrera | 32 | Daughter | — | Arizona |
| 23 | Socorro Herrera | 13 | Granddaughter | — | Arizona |
| 24 | Pedro Herrera | 9 | Grandson | — | Arizona |
| 25 | Isidro Herrera | 7 | Grandson | — | Arizona |
| 26 | Carmen Herrera | 3 | Granddaughter | — | Arizona |
| 27 | Ephemia Herrera | 1 | Daughter | — | Arizona |
| 28 | Earl W. Marideth | 27 | Head | Operator | Missouri |
| 29 | Lorene Ola Marideth | 24 | Wife | — | Oklahoma |
| 30 | John Henry Cooper THIS PERSON | 57 | Head | Farm Manager | Utah |
| 31 | Gertrude L. Cooper | 45 | Wife | — | Arkansas |
| 32 | Maxine Cooper | 18 | Daughter | — | Arizona |
| 33 | Howard Marvin Cooper | 15 | Son | — | Arizona |
| 34 | Lois Evelyn Cooper | 10 | Daughter | — | Arizona |
| 35 | John E. Junior Cooper | 21 | Head | Road Construction | Arizona |
| 36 | Doris Mildred Cooper | 19 | Wife | — | Oklahoma |
| 37 | Walter Hargis | 47 | Head | Milker | Missouri |
| 38 | Vicie Hargis | 53 | Wife | — | Arkansas |
| 39 | Walter Jr. Hargis | 15 | Son | — | Oklahoma |
| 40 | Frank Manley | 57 | Head | Labor | Montana |
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)