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Margaret Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Margaret Mccormick across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | McCormick |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1918 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Rose Mccormick | Daughter | — | 13 | ~1927 |
| Leo Mccormick | Son | — | 24 | ~1916 |
| Margaret Mccormick | Daughter | — | 22 | ~1918 |
| Mary Mccormick | Spouse | — | 51 | ~1889 |
| Francis Mccormick | Head | — | 53 | ~1887 |
| Mary Mccormick | Daughter | — | 17 | ~1923 |
| Alphonsus Mccormick | Son | — | 10 | ~1930 |
| John Mccormick | Son | — | 16 | ~1924 |
| Francis Mccormick | Son | — | 25 | ~1915 |
Census Appearances
1930
St Louis, …
Daughter, age 12
St Louis, Missouri · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 22
St.-Louis-City-County, Missouri · implied b. ~1918 — 9 household members
| Surname | McCormick |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Hours Worked | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Margaret Mccormick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mccormick
Daughter · 1940 · age 22 · b. ~1918 · Missouri
★ You are viewing this record
Sibling
Leo Mccormick
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mccormick
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mccormick
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alphonsus Mccormick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mccormick
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mccormick
Sibling · 1940 · age 16
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.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02209-00146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arlene Zuckerman | 17 | Daughter | — | Missouri |
| 42 | Isidore Zuckerman | 10 | Son | — | Missouri |
| 43 | Olin M. Fisk | 64 | Head | Salesman | Indiana |
| 44 | Ella H. Fisk | 59 | Wife | — | Nebraska |
| 45 | Eva Gline | 45 | Head | — | Russia |
| 46 | Albert S. Leo Gline | 25 | Son | Clerk | California |
| 47 | Sarah R. Gline | 21 | Daughter | Saleslady | Missouri |
| 48 | Otho W. King | 54 | Head | Gardener | Pennsylvania |
| 49 | Susan J. King | 53 | Wife | — | Ohio |
| 50 | David B. Reed | 45 | Head | Electrician | Illinois |
| 51 | Kate Reed | 41 | Wife | Cook | Missouri |
| 52 | Etta Fisher | 64 | Servant | Servant | Missouri |
| 53 | Albert Hahn | 40 | Head | Salesman | Oklahoma |
| 54 | Lucille C. Hahn | 30 | Wife | Seamstress | Illinois |
| 55 | James B. Lumley | 27 | Brother-in-law | — | Missouri |
| 56 | Elmer J. Lumley | 20 | Brother-in-law | Tin Maker | Tennessee |
| 57 | Carl H. Pankhorst | 27 | Head | Order Filler | Arkansas |
| 58 | Dorothy H. Pankhorst | 24 | Wife | — | Arkansas |
| 59 | Carlton D. Pankhorst | 3 | Son | — | Arkansas |
| 60 | Wilford G. Lazeness | 44 | Head | Salesman | Missouri |
| 61 | Jewell G. Lazeness | 46 | Wife | — | Kentucky |
| 62 | Darlene M. Lazeness | 5 | Daughter | — | Missouri |
| 63 | John F. Richardson | 32 | Head | Bottler | Tennessee |
| 64 | Bernice H. Richardson | 28 | Wife | — | Missouri |
| 65 | John F. Richardson | 9 | Son | — | Missouri |
| 66 | Virginia M. Richardson | 5 | Daughter | — | Missouri |
| 67 | Richard R. Richardson | 1 | Son | — | Missouri |
| 68 | Richard E. Crause | 59 | Head | Gateman | Illinois |
| 69 | Lillian L. Crause | 58 | Wife | — | Iowa |
| 70 | Dorothy J. Crause | 15 | Daughter | — | Missouri |
| 71 | Paul O. Crause | 12 | Son | — | Missouri |
| 72 | Francis X. Mccormick | 53 | Head | Captain | Missouri |
| 73 | Mary A. Mccormick | 51 | Wife | — | Missouri |
| 74 | Francis M. Mccormick | 25 | Son | Clerk | Missouri |
| 75 | Leo J. Mccormick | 24 | Son | — | Missouri |
| 76 | Margaret M. Mccormick THIS PERSON | 22 | Daughter | — | Missouri |
| 77 | Mary E. Mccormick | 17 | Daughter | — | Missouri |
| 78 | John R. Mccormick | 16 | Son | — | Missouri |
| 79 | Rose M. Mccormick | 13 | Daughter | — | Missouri |
| 80 | Alphonsus L. Mccormick | 10 | Son | — | Missouri |
Related Census Records
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)