FS
Floyd Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Floyd Smith across the 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 10-person household.
Age 16
b. ~1924
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Smith |
| Given Name | Floyd |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Election Precinct 3 |
| 1935 Residence (County) | Utah |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Election Precinct 3 |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Floyd | Age | Birth yr |
|---|---|---|---|---|
| Mary Smith | Daughter | — | 18 | ~1922 |
| Edwin Smith | Head | — | 43 | ~1897 |
| Robert Smith | Son | — | 7 | ~1933 |
| Albert Smith | Son | — | 5 | ~1935 |
| Raymond Smith | Son | — | 12 | ~1928 |
| Paul Smith | Son | — | 3 | ~1937 |
| Floyd Smith | Son | — | 16 | ~1924 |
| Stanley Smith | Son | — | 4 | ~1936 |
| John Smith | Son | — | 10 | ~1930 |
| Ethel Smith | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Salt Lake, …
Son, age 6
Salt Lake, Utah · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Floyd |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Son, age 16
Salt-Lake-County, Utah · implied b. ~1924 — 10 household members
| Surname | Smith |
| Given Name | Floyd |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Election Precinct 3 |
| 1935 Residence (County) | Utah |
| 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 Floyd Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Floyd Smith
Son · 1940 · age 16 · b. ~1924 · Utah
★ You are viewing this record
Sibling
Robert Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Smith
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Smith
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Smith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Smith
Sibling · 1940 · age 18
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 — 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-t0627-04215-00866)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Syrus Neff | 85 | Head | Real Estate | Utah |
| 2 | Edgar Johnson | 26 | Head | Laborer | Utah |
| 3 | Leona Johnson | 23 | Wife | — | Idaho |
| 4 | Janice Johnson | 2 | Daughter | — | Utah |
| 5 | Max R. Warner | 28 | Head | Book Keeper | Utah |
| 6 | Anna Warner | 28 | Wife | — | Utah |
| 7 | Lucile Warner | 5 | Daughter | — | Utah |
| 8 | Aneta Warner | 3 | Daughter | — | Utah |
| 9 | Kent Warner | 1 | Son | — | Utah |
| 10 | Hebert Riley | 26 | Head | Shipping Clerk | Idaho |
| 11 | Virginia Riley | 25 | Wife | — | Utah |
| 12 | Geraldine Riley | 6 | Daughter | — | Utah |
| 13 | Barbara Jean Riley | 3 | Daughter | — | Utah |
| 14 | Beverly Jane Riley | 2 | Daughter | — | Utah |
| 15 | Harold Sorenson | 40 | Head | Carpenter | New Jersey |
| 16 | Gertrude Sorenson | 35 | Wife | — | Norway |
| 17 | Harold Sorenson | 11 | Son | — | Utah |
| 18 | Grant Sorenson | 9 | Son | — | Utah |
| 19 | Sheldon Jones | 27 | Head | Electrician | Utah |
| 20 | Thelma Jones | 28 | Wife | — | Wyoming |
| 21 | Arlene Jones | 1 | Daughter | — | Utah |
| 22 | Edwin Smith | 43 | Head | Electrician | Utah |
| 23 | Ethel Smith | 42 | Wife | — | Utah |
| 24 | Mary Grace Smith | 18 | Daughter | New Worker | Utah |
| 25 | Floyd Smith THIS PERSON | 16 | Son | — | Utah |
| 26 | Raymond Smith | 12 | Son | — | Utah |
| 27 | John Smith | 10 | Son | — | Utah |
| 28 | Robert Smith | 7 | Son | — | Utah |
| 29 | Albert Smith | 5 | Son | — | Utah |
| 30 | Paul Smith | 3 | Son | — | Utah |
| 31 | Stanley A B Smith | 4 | Son | — | Utah |
| 32 | W. Coulter | 41 | Head | Laborer | Utah |
| 33 | Mary W. Coulter | 31 | Wife | — | Kansas |
| 34 | Duane Coulter | 9 | Son | — | Utah |
| 35 | Ellen Coulter | 5 | Daughter | — | Utah |
| 36 | Nancy Jo. Coulter | 1 | Daughter | — | Utah |
| 37 | James H. Park | 63 | Head | Farming | Utah |
| 38 | Sadie F.W. Park | 58 | Wife | — | Virginia |
| 39 | Arville F. Park | 27 | Son | Salesman | Utah |
| 40 | Ethel A. Park | 26 | Daughter | Piece Mangle | Utah |
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)