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John Mccullough — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mccullough across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McCullough |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | New Worker |
| Township / Ward | Chicago |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Oscar Mccullough | Son | — | 11 | ~1929 |
| Mildred Mccullough | Daughter | — | 16 | ~1924 |
| Pete Mccullough | Son | — | 4 | ~1936 |
| Elizabeth Mccullough | Daughter | — | 14 | ~1926 |
| John Mccullough | Son | — | 17 | ~1923 |
| Polly Mccullough | Head | — | 39 | ~1901 |
| Genevie Mccullough | Daughter | — | 8 | ~1932 |
| Willis Mccullough | Son | — | 5 | ~1935 |
| Jessie Mccullough | Son | — | 3 | ~1937 |
| Clifford Mccullough | Son | — | 19 | ~1921 |
Census Appearances
1930
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCullough |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Pennsylvania |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 17
Cook-County, Illinois · implied b. ~1923 — 10 household members
| Surname | McCullough |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Occupation | New Worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Mccullough across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mccullough
Son · 1940 · age 17 · b. ~1923 · Illinois
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Sibling
Elizabeth Mccullough
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clifford Mccullough
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pete Mccullough
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Oscar Mccullough
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Mccullough
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevie Mccullough
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Mccullough
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willis Mccullough
Sibling · 1940 · age 5
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01005-00482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Beatrice Randle El | 44 | Wife | — | Mississippi |
| 42 | Fred Randle El | 5 | Son | — | Mississippi |
| 43 | Bettie Randle El | 4 | Daughter | — | Illinois |
| 44 | France Randle El | 2 | Daughter | — | Illinois |
| 45 | Curtis Randle El | 1 | Son | — | Illinois |
| 46 | Polly Mccullough | 39 | Head | Laborer | South Carolina |
| 47 | Clifford Mccullough | 19 | Son | Laborer | South Carolina |
| 48 | John Mccullough THIS PERSON | 17 | Son | New Worker | Illinois |
| 49 | Mildred Mccullough | 16 | Daughter | — | Illinois |
| 50 | Elizabeth Mccullough | 14 | Daughter | — | Illinois |
| 51 | Oscar Mccullough | 11 | Son | — | Illinois |
| 52 | Genevie Mccullough | 8 | Daughter | — | Illinois |
| 53 | Willis Mccullough | 5 | Son | — | Illinois |
| 54 | Pete Mccullough | 4 | Son | — | Illinois |
| 55 | Jessie Mccullough | 3 | Son | — | Illinois |
| 56 | Rose Booker | 42 | Head | House Keeper | Mississippi |
| 57 | Alice Black | 58 | Lodger | — | Kentucky |
| 58 | West Johnson | 43 | Head | Laborer | Alabama |
| 59 | Maggie Moore | 20 | Niece | House Keeper | Mississippi |
| 60 | Mattie Dickson | 53 | Head | Night Clerk | South Carolina |
| 61 | Ottaway James | 18 | Grand Son | Dish Washer | Arkansas |
| 62 | Mardella James | 16 | Grand Daughter | — | Arkansas |
| 63 | Henry Rinken | 49 | Head | Tool And Die Maker | Holland |
| 64 | Emma Rinken | 44 | Wife | Laborer | Illinois |
| 65 | Golden Wilson | 30 | Head | Laborer | Alabama |
| 66 | Bonnie Wilson | 26 | Wife | — | Alabama |
| 67 | Zeral Wilson | 4 | Son | — | Alabama |
| 68 | Lowretta Wilson | 3 | Daughter | — | Alabama |
| 69 | Theo Wilson | 2 | Son | — | Illinois |
| 70 | Evlin Bey | 32 | Head | — | Mississippi |
| 71 | Jesse Bey | 11 | Son | — | Mississippi |
| 72 | Dora Bey | 9 | Daughter | — | Louisiana |
| 73 | Juilet Bey | 4 | Daughter | — | Illinois |
| 74 | Mathew Mitchell | 35 | Head | Laborer | Mississippi |
| 75 | Cora Mitchell | 35 | Wife | — | Mississippi |
| 76 | Mathew Mitchell | 13 | Son | — | Mississippi |
| 77 | Fred L. Mitchell | 10 | Son | — | Mississippi |
| 78 | Hattie M. Mitchell | 8 | Daughter | — | Mississippi |
| 79 | Willie Mitchell | 6 | Son | — | Mississippi |
| 80 | Otha Mitchell | 4 | Daughter | — | Mississippi |
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)