DC
David Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this David Campbell across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents David & Margaret — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Campbell |
| Given Name | David J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Election Precinct 3 |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Painter Helper |
| Industry | Painting Bus. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | No 12 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Painter Helper |
| Township / Ward | Election Precinct 3 |
| Est. Birth Year | ~1919 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| Susan Campbell | Spouse | — | 55 | ~1885 |
| David Campbell | Son | — | 21 | ~1919 |
| D Campbell | Head | — | 53 | ~1887 |
Census Appearances
1920
Salt Lake, …
Son, age 1
Salt Lake, Utah · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | David J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Son, age 11
Salt Lake, Utah · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | David J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Son, age 21
Salt-Lake-County, Utah · implied b. ~1919 — 3 household members
| Surname | Campbell |
| Given Name | David J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Election Precinct 3 |
| 1935 Residence (County) | Salt Lake |
| Occupation | Painter Helper |
| Industry | Painting Bus. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | No 12 |
| 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 David Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Campbell (~0.92 confidence) and mother Margaret Campbell (~0.92 confidence) and mother Susan Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Campbell
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Margaret Campbell
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Susan Campbell
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Campbell
Son · 1940 · age 21 · b. ~1919 · Utah
★ You are viewing this record
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
31 people indexed on this census page (nara:1940:m-t0627-04215-00868)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jonnie Turner | 2 | Son | — | Utah |
| 2 | Ernest H. Turner | 57 | Head | Laborer | Utah |
| 3 | Edith Turner | 54 | Wife | — | Utah |
| 4 | Martin Ruffin | 65 | Head | — | Switzerland |
| 5 | Rosa Ruffin | 64 | Wife | — | Switzerland |
| 6 | Margarette Ruffin | 25 | Daughter | — | Switzerland |
| 7 | Leon Ruffin | 29 | Head | Warehouse Man | Switzerland |
| 8 | Ruby Ruffin | 24 | Wife | — | Utah |
| 9 | Marlene Ruffin | 2 | Daughter | — | Utah |
| 10 | Russell Young | 53 | Head | Dairy Man | Utah |
| 11 | Saba Young | 50 | Wife | — | Ohio |
| 12 | Rodney Young | 15 | Son | — | Utah |
| 13 | Edward Tucker | 13 | Nephew | — | Utah |
| 14 | Caroline Jensen | 72 | Head | — | Utah |
| 15 | Paul Jones | 29 | Head | Welder | Utah |
| 16 | Lavon Jones | 23 | Wife | — | Utah |
| 17 | Geo. Leoncini | 18 | Head | Laborer | Italy |
| 18 | Marilyn Leoncini | 18 | Wife | — | Utah |
| 19 | William Gene Leoncini | 2 | Son | — | Utah |
| 20 | E. Orlo Baldwin | 34 | Head | Carpenter | Utah |
| 21 | Wanda Baldwin | 31 | Wife | — | Utah |
| 22 | Peggy Baldwin | 11 | Daughter | — | Utah |
| 23 | Clad Baldwin | 2 | Son | — | Utah |
| 24 | D. J. Campbell | 53 | Head | Painter | Scotland |
| 25 | Susan Campbell | 55 | Wife | Painter Helper | Ireland |
| 26 | David J. Jr. Campbell THIS PERSON | 21 | Son | Painter Helper | Utah |
| 27 | H. M. Campbell | 31 | Head | Painter | Utah |
| 28 | Mary S. Campbell | 31 | Wife | — | Idaho |
| 29 | Allen Campbell | 5 | Son | — | Idaho |
| 30 | Bobbie Campbell | 3 | Son | — | Idaho |
| 31 | Ron Campbell | 1 | Son | — | Utah |
Related Census Records
Pedigree Summary
David
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)