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John Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Michigan
Our Model Tree links this John Mccormick across the 1930 and 1940 US Censuses in St.-Clair-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 13-person household.
Age 16
b. ~1924
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Michigan |
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Kimball Town |
| 1935 Residence (County) | St Clair |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Kimball Town |
| Est. Birth Year | ~1924 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Janice Mccormick | Daughter | — | 10 | ~1930 |
| Patricia Mccormick | Daughter | — | 8 | ~1932 |
| Helen Mccormick | Daughter | — | 18 | ~1922 |
| Phillis Mccormick | Daughter | — | 5 | ~1935 |
| Bruce Mccormick | Head | — | 50 | ~1890 |
| William Mccormick | Son | — | 6 | ~1934 |
| John Mccormick | Son | — | 16 | ~1924 |
| James Mccormick | Son | — | 3 | ~1937 |
| Laurel Mccormick | Son | — | 17 | ~1923 |
| David Mccormick | Son | — | 3 | ~1937 |
| Daniel Mccormick | Son | — | ~1940 | |
| George Mccormick | Son | — | 4 | ~1936 |
| Jean Mccormick | Spouse | — | 37 | ~1903 |
Census Appearances
1930
St Clair, …
Son, age 6
St Clair, Michigan · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John T |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Son, age 16
St.-Clair-County, Michigan · implied b. ~1924 — 13 household members
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Kimball Town |
| 1935 Residence (County) | St Clair |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Mccormick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mccormick
Son · 1940 · age 16 · b. ~1924 · Michigan
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Sibling
George Mccormick
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mccormick
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Mccormick
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mccormick
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillis Mccormick
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janice Mccormick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mccormick
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laurel Mccormick
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mccormick
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Mccormick
Sibling · 1940 · age 3
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 — St.-Clair-County, Michigan
Open full size
1940 US Federal Census — St.-Clair-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01815-00560)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dallas Bronson | 2 | Daughter | — | Michigan |
| 42 | Jack Mayer | 25 | Head | Set-Up-Man | Michigan |
| 43 | Louise Mayer | 23 | Wife | — | Michigan |
| 44 | Bruce Mccormick | 50 | Head | Mail Man | Michigan |
| 45 | Jean Mccormick | 37 | Wife | — | Michigan |
| 46 | Helen Mccormick | 18 | Daughter | — | Michigan |
| 47 | Laurel Mccormick | 17 | Son | — | Michigan |
| 48 | John Mccormick THIS PERSON | 16 | Son | — | Michigan |
| 49 | Janice Mccormick | 10 | Daughter | — | Michigan |
| 50 | Patricia Mccormick | 8 | Daughter | — | Michigan |
| 51 | Phillis Mccormick | 5 | Daughter | — | Michigan |
| 52 | William Mccormick | 6 | Son | — | Michigan |
| 53 | George Mccormick | 4 | Son | — | Michigan |
| 54 | James Mccormick | 3 | Son | — | Michigan |
| 55 | David Mccormick | 3 | Son | — | Michigan |
| 56 | Daniel Mccormick | 0 | Son | — | Michigan |
| 57 | Arthur Gottleber | 47 | Head | Binder | Michigan |
| 58 | Ethel Gottleber | 41 | Wife | — | Michigan |
| 59 | Earl Gottleber | 18 | Son | Carpenter | Michigan |
| 60 | June Gottleber | 15 | Daughter | — | Michigan |
| 61 | Arthur Hatherley | 53 | Head | Laborer | England |
| 62 | Hollie Green | 49 | Head | — | Michigan |
| 63 | Elmer Schenck | 48 | Brother | — | Michigan |
| 64 | Elum Schenck | 43 | Sister | — | Michigan |
| 65 | William Phippen | 50 | Head | Blacksmith Helper | Canada-English |
| 66 | Ollie Phippen | 48 | Wife | — | Illinois |
| 67 | Harold Phippen | 28 | Son | Laborer | Illinois |
| 68 | Melvin Phippen | 18 | Son | New Worker | Michigan |
| 69 | William Warsinski | 28 | Head | Carman'S Helper | Michigan |
| 70 | Grace Warsinski | 22 | Wife | — | Michigan |
| 71 | George Davis | 69 | Head | Farm Laborer | Michigan |
| 72 | Grace Davis | 16 | Daughter | — | Michigan |
| 73 | Alfred Fidler | 59 | Head | Farmer | England |
| 74 | John Steukens | 59 | Head | Laborer | Pennsylvania |
| 75 | Franklin Steukens | 20 | Son | Digging Stumps | Pennsylvania |
| 76 | Ollie Steukens | 25 | Daughter-in-law | — | Canada-English |
| 77 | Priscilla Steukens | 2 | Grand-daughter | — | Michigan |
| 78 | Jennie O'Brien | 38 | Head | — | Michigan |
| 79 | Eugene O'Brien | 17 | Son | — | Michigan |
| 80 | Ida Mae O'Brien | 15 | Daughter | — | 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)