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John Calhoun — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this John Calhoun across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Calhoun |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | S. D. 3 |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | S D 3 |
| Est. Birth Year | ~1919 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Verna Calhoun | Daughter | — | 15 | ~1925 |
| Robert Calhoun | Son | — | 19 | ~1921 |
| John Calhoun | Head | — | 49 | ~1891 |
| John Calhoun | Son | — | 21 | ~1919 |
| Fay Calhoun | Daughter | — | 9 | ~1931 |
| Bertha Calhoun | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Maricopa, Arizona
Son, age 11
Maricopa, Arizona · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Calhoun |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Arkansas |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Son, age 21
Maricopa-County, Arizona · implied b. ~1919 — 6 household members
| Surname | Calhoun |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | S. D. 3 |
| 1935 Residence (County) | Maricopa |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 Calhoun across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Calhoun
Son · 1940 · age 21 · b. ~1919 · Arizona
★ You are viewing this record
Sibling
Verna Calhoun
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Calhoun
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fay Calhoun
Sibling · 1940 · age 9
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 — 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-t0627-00109-00260)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ira S Smith | 41 | Wife | — | Nebraska |
| 42 | George E Smith | 17 | Son | — | Arizona |
| 43 | Alfred W Smith | 15 | Son | — | Arizona |
| 44 | Louis L Smith | 13 | Son | — | Arizona |
| 45 | Ronald L Smith | 11 | Daughter | — | Arizona |
| 46 | James A Smith | 9 | Son | — | Arizona |
| 47 | Robert L Smith | 8 | Son | — | Arizona |
| 48 | Ada M Smith | 5 | Daughter | — | Arizona |
| 49 | Harry J Smith | 4 | Son | — | Arizona |
| 50 | Harriet J Smith | 4 | Daughter | — | Arizona |
| 51 | Joy A Smith | 3 | Daughter | — | Arizona |
| 52 | Donald H Smith | 1 | Son | — | Arizona |
| 53 | David M Brown | 42 | Head | Farmer | Arizona |
| 54 | Cuba Brown | 37 | Wife | — | Texas |
| 55 | Mary A Brown | 18 | Daughter | — | New Mexico |
| 56 | Harlan J Brown | 4 | Son | — | Arizona |
| 57 | T. B. Kelley | 48 | Head | Farmer | Missouri |
| 58 | Annabella R Kelley | 39 | Wife | — | Texas |
| 59 | Helene Kelley | 19 | Daughter | — | Arizona |
| 60 | Archie Kelley | 18 | Son | New Worker | Arizona |
| 61 | Jessie M Kelley | 16 | Daughter | — | Arizona |
| 62 | Katherine Kelley | 15 | Daughter | — | Arizona |
| 63 | Raymond Kelley | 13 | Son | — | Arizona |
| 64 | Ernest Kelley | 9 | Son | — | Arizona |
| 65 | Clarence Kelley | 7 | Son | — | Arizona |
| 66 | Clyde Kelley | 5 | Son | — | Arizona |
| 67 | Ester Kelley | 1 | Daughter | — | Arizona |
| 68 | Lester Kelley | 1 | Son | — | Arizona |
| 69 | Charles H Good | 21 | Head | Laborer | Oklahoma |
| 70 | Helen F Good | 21 | Wife | — | Oklahoma |
| 71 | Harry J Good | 3 | Son | — | Arizona |
| 72 | John D Calhoun | 49 | Head | Bookkeeper | Arkansas |
| 73 | Bertha Calhoun | 48 | Wife | — | Missouri |
| 74 | John D Calhoun THIS PERSON | 21 | Son | — | Arizona |
| 75 | Robert S Calhoun | 19 | Son | — | Arizona |
| 76 | Verna L Calhoun | 15 | Daughter | — | Arizona |
| 77 | Fay N Calhoun | 9 | Daughter | — | Arizona |
| 78 | John F Center | 83 | Head | Farmer | Kentucky |
| 79 | Teodoro Lopez | 34 | Head | Laborer | Mexico |
| 80 | Jesus Lopez | 32 | Wife | — | Mexico |
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)