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John Calhoun — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this John Calhoun across the 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Male
Son
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Calhoun |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Birmingham |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Cecile Calhoun | Son | — | 11 | ~1929 |
| James Calhoun | Son | — | 18 | ~1922 |
| John Calhoun | Son | — | 20 | ~1920 |
| Harriet Calhoun | Son | — | 7 | ~1933 |
| Nannie Calhoun | Spouse | — | 38 | ~1902 |
| Will Calhoun | Head | — | 40 | ~1900 |
| Willie Calhoun | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Jefferson, Alabama
Other, age 10
Jefferson, Alabama · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Calhoun |
| Given Name | John |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Son, age 20
Jefferson-County, Alabama · implied b. ~1920 — 7 household members
| Surname | Calhoun |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham |
| 1935 Residence (County) | Jefferson |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 20 · b. ~1920 · Alabama
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Sibling
Cecile Calhoun
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Calhoun
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Calhoun
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Calhoun
Sibling · 1940 · age 18
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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00098-00206)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Jackson | 11 | Son | — | Alabama |
| 42 | Leo Jackson | 11 | Son | — | Alabama |
| 44 | Sue D. Killian | 81 | Head | — | Alabama |
| 45 | Mary Pennington | 56 | Daughter | — | Alabama |
| 47 | Ed Shelton | 51 | Head | File Clerk | Georgia |
| 48 | Ethel Shelton | 52 | Wife | Janitor | Georgia |
| 49 | Nancy Spearman | 75 | Mother-in-law | — | Georgia |
| 51 | Howard Calhoun | 36 | Head | Molder | Alabama |
| 52 | Mattie Calhoun | 26 | Wife | — | Alabama |
| 53 | Dorothy Calhoun | 11 | Daughter | — | Alabama |
| 54 | Jessie Lee Calhoun | 10 | Daughter | — | Alabama |
| 55 | Lula Calhoun | 8 | Daughter | — | Alabama |
| 56 | Howard Jr. Calhoun | 6 | Son | — | Alabama |
| 57 | Mary Lee Calhoun | 4 | Daughter | — | Alabama |
| 58 | Robert Denton | 48 | Head | Inspector | Georgia |
| 59 | Rosetta Denton | 46 | Wife | — | Georgia |
| 60 | Brightie Lee Denton | 23 | Daughter | — | Georgia |
| 61 | Mae Ella Denton | 20 | Daughter | Maid | Georgia |
| 62 | Joseph Denton | 18 | Son | — | Georgia |
| 63 | Ruth Denton | 16 | Daughter | — | Georgia |
| 64 | Ethel Mary Denton | 13 | Daughter | — | Alabama |
| 65 | Nanny Joe Denton | 9 | Daughter | — | Alabama |
| 66 | Carrie C. Denton | 4 | Daughter | — | Alabama |
| 67 | Will Calhoun | 40 | Head | Molder | Alabama |
| 68 | Nannie L. Calhoun | 38 | Wife | — | Alabama |
| 69 | John Calhoun THIS PERSON | 20 | Son | — | Alabama |
| 70 | James Calhoun | 18 | Son | — | Alabama |
| 71 | Willie Mary Calhoun | 13 | Daughter | — | Alabama |
| 72 | Cecile Calhoun | 11 | Son | — | Alabama |
| 73 | Harriet Calhoun | 7 | Son | — | Alabama |
| 74 | Ray Scott | 50 | Head | Molder | Alabama |
| 75 | Zelma Scott | 46 | Wife | — | Alabama |
| 76 | Carrie Scott | 14 | Daughter | — | Alabama |
| 77 | Sue Ann Freeman | 29 | Daughter | — | Alabama |
| 78 | Isaac Freeman | 30 | Son-in-law | Bricklayer | Alabama |
| 79 | Dorothy Lee Freeman | 3 | Daughter | — | Alabama |
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)