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Mary Mcmillan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Mary Mcmillan across the 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1905), then head of a 8-person household.
Age 35
b. ~1905
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | McMillan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Murray City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Murray City |
| Est. Birth Year | ~1905 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Janice Mcmillan | Daughter | — | 4 | ~1936 |
| Mary Mcmillan | Spouse | — | 35 | ~1905 |
| Marilyn Mcmillan | Daughter | — | 10 | ~1930 |
| Newel Mcmillan | Head | — | 42 | ~1898 |
| La Mcmillan | Son | — | 18 | ~1922 |
| Beverly Mcmillan | Daughter | — | 8 | ~1932 |
| Vernetta Mcmillan | Daughter | — | 16 | ~1924 |
| Glenda Mcmillan | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Salt Lake, …
Other, age 25
Salt Lake, Utah · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMillan |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 23 |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Spouse, age 35
Salt-Lake-County, Utah · implied b. ~1905 — 8 household members
| Surname | McMillan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Murray City |
| 1935 Residence (County) | Salt Lake |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Mary Mcmillan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcmillan
Spouse · 1940 · age 35 · b. ~1905 · Utah
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04216-00890)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rulon B. Platt | 42 | Lodger | Janitor | Utah |
| 2 | Norma Johnson | 29 | Lodger | Cook | Idaho |
| 3 | Newel Mcmillan | 42 | Head | Truck Driver | Utah |
| 4 | Mary Mcmillan THIS PERSON | 35 | Wife | — | Utah |
| 5 | La Van (Ab) Mcmillan | 18 | Son | New Worker | Utah |
| 6 | Vernetta Mcmillan | 16 | Daughter | — | Utah |
| 7 | Marilyn Mcmillan | 10 | Daughter | — | Utah |
| 8 | Beverly Ann Mcmillan | 8 | Daughter | — | Utah |
| 9 | Janice L. Mcmillan | 4 | Daughter | — | Utah |
| 10 | Glenda Ray Mcmillan | 1 | Daughter | — | Utah |
| 11 | David W. Smith | 54 | Head | Teacher | Utah |
| 12 | Evelyn L. Smith | 51 | Wife | — | Utah |
| 13 | Virginia Smith | 19 | Daughter | — | Utah |
| 14 | Alan Smith | 16 | Son | New Worker | Utah |
| 15 | R. Lowry Smith | 24 | Son | Carrier | Utah |
| 16 | D. A. Lowry | 32 | Son-in-law | On Mission | Utah |
| 17 | Emily Lowry | 72 | Mother-in-law | — | Utah |
| 18 | Francis L. Smith | 36 | Head | Machinist Hlpr. | South Dakota |
| 19 | Evelyn Smith | 27 | Wife | — | Utah |
| 20 | Frances J. Smith | 4 | Daughter | — | South Dakota |
| 21 | John Smith | 3 | Son | — | South Dakota |
| 22 | John Henry Smith | 64 | Father | — | Iowa |
| 23 | James Christiansen | 33 | Head | Miner | Idaho |
| 24 | Netta Christiansen | 27 | Wife | — | Utah |
| 25 | Sylvan Christiansen | 5 | Son | — | Utah |
| 26 | Mary Puchar | 57 | Head | Marker | Yugoslavia |
| 27 | William Puchar | 25 | Son | Welder | Utah |
| 28 | Arthur Ruben | 31 | Head | Filing Clerk | Utah |
| 29 | Adalene Ruben | 30 | Wife | — | Utah |
| 30 | Richard S. Mccloy | 67 | Head | — | Utah |
| 31 | Eva L. Mccloy | 64 | Wife | — | Utah |
| 32 | Hilmer A. Larkin | 37 | Head | Multigraph | Utah |
| 33 | Le Nora Larkin | 41 | Wife | — | Utah |
| 34 | Ann Mary Larkin | 9 | Daughter | — | Utah |
| 35 | Dion Lee Larkin | 7 | Daughter | — | Utah |
| 36 | Haley J. Mccloy | 26 | Head | Machinist | Utah |
| 37 | Christine Mccloy | 24 | Wife | — | Missouri |
| 38 | Rudolph Isaacson | 32 | Head | Carpenter | Sweden |
| 39 | Mildred Isaacson | 30 | Wife | — | Utah |
| 40 | Verle R. Isaacson | 5 | Son | — | Utah |
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)