CS
Calvin Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Calvin Smith across the 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 11-person household.
Age 49
b. ~1891
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Precinct 5 |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Research |
| Industry | State |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 3600 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Research |
| Township / Ward | Precinct 5 |
| Est. Birth Year | ~1891 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Calvin | Age | Birth yr |
|---|---|---|---|---|
| Lucille Smith | Spouse | — | 44 | ~1896 |
| Calvin Smith | Son | — | 19 | ~1921 |
| Helen Smith | Daughter | — | 10 | ~1930 |
| Margaret Smith | Daughter | — | 14 | ~1926 |
| Calvin Smith | Head | — | 49 | ~1891 |
| Wayne Smith | Son | — | 16 | ~1924 |
| Elizabeth Smith | Daughter | — | 1 | ~1939 |
| James Smith | Son | — | 12 | ~1928 |
| Nora Smith | Daughter | — | 6 | ~1934 |
| Lucille Smith | Daughter | — | 8 | ~1932 |
| Virginia Smith | Daughter | — | 4 | ~1936 |
Census Appearances
1930
Salt Lake, …
Head, age 39
Salt Lake, Utah · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 27 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Utah |
| Occupation | Superintendent |
| Industry | Public Schools |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 23 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 49
Salt-Lake-County, Utah · implied b. ~1891 — 11 household members
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Precinct 5 |
| 1935 Residence (County) | Salt Lake |
| Occupation | Research |
| Industry | State |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 3600 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Calvin Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Calvin Smith
Head · 1940 · age 49 · b. ~1891 · 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-t0627-04216-00105)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Orval Matthews | 39 | Head | Farmer | Utah |
| 2 | Vera P Matthews | 36 | Wife | — | Utah |
| 3 | Max Matthews | 16 | Son | — | Utah |
| 4 | Jean Matthews | 14 | Daughter | — | Utah |
| 5 | Nina Matthews | 6 | Daughter | — | Utah |
| 6 | Clifford Mathews | 38 | Head | Farmer | Utah |
| 7 | Melba P Mathews | 35 | Wife | — | Utah |
| 8 | Wayne Mathews | 16 | Son | — | Utah |
| 9 | Ray Mathews | 13 | Son | — | Utah |
| 10 | Marjorie Mathews | 9 | Daughter | — | Utah |
| 11 | Robert Mathews | 6 | Son | — | Utah |
| 12 | Connie Mathews | 0 | Daughter | — | Utah |
| 13 | Thomas Sorenson | 47 | Head | Engineer | Utah |
| 14 | Verena Sorenson | 44 | Wife | — | Utah |
| 15 | Boyd Sorenson | 18 | Son | — | Utah |
| 16 | Leon Sorenson | 14 | Son | — | Utah |
| 17 | Dilla Sorenson | 10 | Daughter | — | Utah |
| 18 | Ernest J. Labrum | 25 | Head | Laborer | Utah |
| 19 | Louise P Labrum | 24 | Wife | — | Utah |
| 20 | Maurine Labrum | 0 | Daughter | — | Utah |
| 21 | John K Labrum | 0 | Son | — | Utah |
| 22 | William Mackay | 41 | Head | Laborer | Utah |
| 23 | Eva C P Mackay | 35 | Wife | — | Utah |
| 24 | Norman Mackay | 19 | Son | — | Utah |
| 25 | Viona Mackay | 11 | Daughter | — | Utah |
| 26 | Walter Mackay | 8 | Son | — | Utah |
| 27 | Neil Mackay | 1 | Son | — | Utah |
| 28 | Calvin Smith THIS PERSON | 49 | Head | Research | Utah |
| 29 | Lucille Smith | 44 | Wife | — | Utah |
| 30 | Calvin Smith | 19 | Son | — | Utah |
| 31 | Wayne Smith | 16 | Son | — | Utah |
| 32 | Margaret Smith | 14 | Daughter | — | Utah |
| 33 | James Smith | 12 | Son | — | Utah |
| 34 | Helen Smith | 10 | Daughter | — | Utah |
| 35 | Lucille Smith | 8 | Daughter | — | Utah |
| 36 | Nora Smith | 6 | Daughter | — | Utah |
| 37 | Virginia Smith | 4 | Daughter | — | Utah |
| 38 | Elizabeth Smith | 1 | Daughter | — | Utah |
| 39 | Henry Bringhurst | 58 | Head | Farmer | Utah |
| 40 | Merinda P Bringhurst | 51 | Wife | — | 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)