JC
John Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this John Campbell across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Robert & Agnes — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Campbell |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Sheet metal helper |
| Industry | Sheet metal |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1200 |
| Highest Grade | H-3 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Sheet Metal Helper |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1899 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Connie Campbell | Daughter | — | 1 | ~1939 |
| John Campbell | Head | — | 41 | ~1899 |
| Wayne Campbell | Son | — | 11 | ~1929 |
| Gayle Campbell | Son | — | 3 | ~1937 |
| Lorena Campbell | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Salt Lake, …
Son, age 20
Salt Lake, Utah · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Common |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Head, age 31
Salt Lake, Utah · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 28 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Sheet Metal Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 9 |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 41
Salt-Lake-County, Utah · implied b. ~1899 — 5 household members
| Surname | Campbell |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Sheet metal helper |
| Industry | Sheet metal |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1200 |
| Highest Grade | H-3 |
| 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 John Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Campbell (~0.92 confidence) and mother Agnes Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Campbell
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Agnes Campbell
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Campbell
Head · 1940 · age 41 · b. ~1899 · 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
38 people indexed on this census page (nara:1940:m-t0627-04225-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 42 | Fitzhugh Kyday | 54 | Head | Auto Mechanic | Indiana |
| 43 | Lois Kyday | 29 | Wife | — | Texas |
| 44 | Annabelle Kyday | 11 | Daughter | — | Utah |
| 45 | Dorothy Kyday | 8 | Daughter | — | Utah |
| 46 | Jared Kyday | 6 | Son | — | Utah |
| 47 | Joseph Kyday | 4 | Son | — | Utah |
| 48 | Wilford Jorgensen | 39 | Head | Automotive Electrician | Utah |
| 49 | Helen Jorgensen | 29 | Wife | — | Wyoming |
| 50 | Ronald Jorgensen | 9 | Son | — | Utah |
| 51 | Audry Jorgensen | 7 | Daughter | — | Utah |
| 52 | Geraldine Jorgensen | 4 | Daughter | — | Utah |
| 53 | Denzil H. Jenks | 31 | Head | Machinist Helper | Idaho |
| 54 | Mabel Jenks | 30 | Wife | — | Utah |
| 55 | Elvona Jenks | 6 | Daughter | — | Utah |
| 56 | Delvin Jenks | 4 | Son | — | Utah |
| 57 | Mira Gay Jenks | 2 | Daughter | — | Utah |
| 58 | Lewis H. Silver | 24 | Head | Janitor | Utah |
| 59 | Lillian Marie Silver | 24 | Wife | — | Utah |
| 60 | Robert Lewis Silver | 6 | Son | — | Utah |
| 61 | Joann Lillian Silver | 3 | Daughter | — | Utah |
| 62 | Marilyn Marie Silver | 2 | Daughter | — | Utah |
| 64 | Annie H. Barney | 46 | Head | Laborer | Utah |
| 65 | Lavern Barney | 45 | Wife | — | Utah |
| 66 | Doris Barney | 24 | Daughter | — | Utah |
| 67 | Thomas Barney | 21 | Son | Lasing | Utah |
| 68 | John Barney | 18 | Son | Bus Driver | Utah |
| 69 | Kenneth Barney | 15 | Son | — | Utah |
| 70 | Lois Barney | 11 | Daughter | — | Utah |
| 71 | John D. Campbell THIS PERSON | 41 | Head | Sheet Metal Helper | Utah |
| 72 | Lorena Campbell | 33 | Wife | — | Utah |
| 73 | Wayne Campbell | 11 | Son | — | Utah |
| 74 | Gayle Campbell | 3 | Son | — | Utah |
| 75 | Connie Campbell | 1 | Daughter | — | Utah |
| 76 | Melvin Meadows | 46 | Head | Fireman | Idaho |
| 77 | Rose Meadows | 36 | Wife | — | Germany |
| 78 | Lawrence Meadows | 15 | Son | — | Utah |
| 79 | Marjorie Meadows | 14 | Daughter | — | Utah |
| 80 | Jean Meadows | 2 | Daughter | — | Utah |
Pedigree Summary
John
Gen 1 · 2 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)