JC
Joseph Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Joseph Campbell across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents William & Nellie — first a son (b.~1896), then head of a 3-person household.
Age 44
b. ~1896
Male
Son
Born: Colorado
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Campbell |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Colorado |
| 1935 Residence (City) | Los Angeles city |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Police officer |
| Industry | City Police Dept. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Police Officer |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1896 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| William Campbell | Head | — | 75 | ~1865 |
| Joseph Campbell | Son | — | 44 | ~1896 |
| Nellie Campbell | Spouse | — | 68 | ~1872 |
Census Appearances
1920
Los Angeles, …
Other, age 22
Los Angeles, California · implied b. ~1898 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Joseph M. |
| Relationship to Head | Nephew |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Colorado |
| Occupation | Meat Cutter |
| Industry | Meat Market |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Los Angeles, …
Son, age 33
Los Angeles, California · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Michigan |
| Mother's Birthplace | New York |
| Occupation | Welder |
| Industry | Oil Field |
| Class of Worker | W |
| Can Read/Write | Yes |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Los-Angeles-County, California
Son, age 44
Los-Angeles-County, California · implied b. ~1896 — 3 household members
| Surname | Campbell |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Colorado |
| 1935 Residence (City) | Los Angeles city |
| 1935 Residence (County) | Los Angeles |
| Occupation | Police officer |
| Industry | City Police Dept. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Joseph Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Campbell (~0.92 confidence) and mother Nellie Campbell (~0.92 confidence) and father William Campbell (~0.92 confidence) and mother Edith Campbell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Campbell
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Nellie Campbell
b. ~1872
Source mother
● Household
· direct · ~0.92
Father
William Campbell
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Edith Campbell
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Campbell
Son · 1940 · age 44 · b. ~1896 · California
★ 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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00423-00507)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dennis Laudenback | 3 | Son | — | California |
| 2 | Robert Laudenback | 2 | Son | — | California |
| 3 | Andrew Breland | 64 | Head | — | Mississippi |
| 4 | Katie Breland | 58 | Wife | — | Mississippi |
| 5 | Everett Breland | 35 | Son | Carpenter | Mississippi |
| 6 | Raymond Feasel | 28 | Son-in-law | Projectionist | Michigan |
| 7 | Katie Feasel | 26 | Daughter | — | Mississippi |
| 8 | Earl Organ | 37 | Head | Traveling Salesman | Texas |
| 9 | Marjorie Organ | 34 | Wife | — | Kansas |
| 10 | Edwin Organ | 6 | Son | — | California |
| 11 | Roberta Organ | 2 | Daughter | — | California |
| 12 | William Mckinney | 31 | Head | Truck Driver | Texas |
| 13 | Cless Mckinney | 31 | Wife | — | Oklahoma |
| 14 | Neil Mckinney | 5 | Son | — | Texas |
| 15 | Joe Mckinney | 2 | Son | — | Texas |
| 16 | Frank Cresmer | 76 | Head | — | Maryland |
| 17 | Mary A. Cresmer | 76 | Wife | — | Virginia |
| 18 | Robert Baker | 58 | Head | Foreman - Street Lighting | California |
| 19 | Coralie Baker | 57 | Wife | — | Tennessee |
| 20 | Margaret Johnson | 60 | Head | — | Illinois |
| 21 | Ernest Crowley | 56 | Head | Lineman'S Helper | Texas |
| 22 | Bertha Crowley | 73 | Wife | — | Michigan |
| 23 | Clare Baker | 53 | Head | — | Nebraska |
| 24 | James Baker | 23 | Son | Auto Mechanic | California |
| 25 | Mary Baker | 21 | Daughter | Stenographer | California |
| 26 | Lloyd Copeland | 43 | Head | Engineer - Street | Washington |
| 27 | Alice Copeland | 30 | Wife | — | Michigan |
| 28 | William Campbell | 75 | Head | — | Michigan |
| 29 | Nellie Campbell | 68 | Wife | — | New York |
| 30 | Joseph Campbell THIS PERSON | 44 | Son | Police Officer | Colorado |
| 31 | Clarence Snyder | 71 | Head | — | Illinois |
| 32 | Sophie Snyder | 65 | Wife | — | Illinois |
| 33 | Alfred Tennent | 53 | Head | Building Guard | England |
| 34 | Mabel Tennent | 53 | Wife | — | Kansas |
| 35 | Joseph Asper | 33 | Stepson | — | California |
| 36 | Mary Biescar | 65 | Head | — | Czechoslovakia |
| 37 | Edwin B. Babcock | 50 | Head | Proprietor | Missouri |
| 38 | Abbie Babcock | 46 | Wife | Saleslady | Tennessee |
| 39 | Christian Imsland | 43 | Head | Dentist | Norway |
| 40 | Ethel Moore | 56 | Head | Proprietor - | South Wales |
Pedigree Summary
Joseph
Gen 1 · 4 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)