CJ
Charles Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Charles Johnson across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Oscar & Oscar — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Johnson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Clerk |
| Industry | Coffee House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1916 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Marie Johnson | Daughter | — | 15 | ~1925 |
| Oscar Johnson | Head | — | 44 | ~1896 |
| Charles Johnson | Son | — | 24 | ~1916 |
| Eugene Johnson | Son | — | 22 | ~1918 |
| Adeline Johnson | Spouse | — | 47 | ~1893 |
Census Appearances
1920
San Francisco, …
Son, age 3
San Francisco, California · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 14
San Francisco, California · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 24
San-Francisco-County, California · implied b. ~1916 — 5 household members
| Surname | Johnson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Clerk |
| Industry | Coffee House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Charles Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Johnson (~0.92 confidence) and father Oscar Johnson (~0.92 confidence) and father John Johnson (~0.81 confidence) and mother Mary Johnson (~0.81 confidence) and mother Adeline Johnson (~0.92 confidence) and mother Adeline Johnson (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
Oscar Johnson
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Oscar Johnson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1860
Source father>father
● Household
· direct · ~0.81
Mother
Mary Johnson
b. ~1865
Source father>mother
● Household
· direct · ~0.81
Mother
Adeline Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Adeline Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Johnson
Son · 1940 · age 24 · b. ~1916 · California
★ You are viewing this record
Sibling
Marie Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Johnson
Sibling · 1940 · age 22
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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00310-01048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Anderson | 54 | Head | Conductor | Missouri |
| 2 | Martha Anderson | 56 | Wife | — | Norway |
| 3 | Grace Anderson | 14 | Daughter | — | California |
| 4 | Helen Anderson | 23 | Daughter | — | California |
| 5 | Ed. Vinger | 50 | Head | Receiving Clk | Nebraska |
| 6 | Eleanor Vinger | 55 | Wife | — | Texas |
| 7 | Marie X Mcnaughton | 44 | Head | — | California |
| 8 | Jane Mcnaughton | 20 | Daughter | Secretary | California |
| 9 | Bernice Mcnaughton | 18 | Daughter | None Worker | California |
| 10 | Oscar Johnson | 44 | Head | Salesman | California |
| 11 | Adeline Johnson | 47 | Wife | — | California |
| 12 | Charles Johnson THIS PERSON | 24 | Son | Clerk | California |
| 13 | Eugene Johnson | 22 | Son | Driver | California |
| 14 | Marie Johnson | 15 | Daughter | — | California |
| 15 | John Delrio | 71 | Head | — | New York |
| 16 | Edith Delrio | 56 | Wife | — | England |
| 17 | Emaline Delrio | 30 | Daughter | Teacher | California |
| 18 | Louise Delrio | 26 | Daughter | Teacher | California |
| 19 | Joseph Costello | 34 | Head | Special Policeman | California |
| 20 | Wanda Costello | 30 | Wife | — | Germany |
| 21 | Carolyn Costello | 3 | Daughter | — | California |
| 22 | Catherine Lucas | 76 | Head | — | Ireland |
| 23 | Silvio Gabrielli | 36 | Head | Florist | Italy |
| 24 | Ella Gabrielli | 30 | Wife | — | California |
| 25 | Andrew Gabrielli | 7 | Son | — | California |
| 26 | Lorraine Gabrielli | 3 | Daughter | — | California |
| 27 | Edmund Cornest | 36 | Head | Plant Foreman | California |
| 28 | Adelaide Cornest | 37 | Wife | — | California |
| 29 | Florence R. Gray | 44 | Head | — | California |
| 30 | William Gray | 25 | Son | — | California |
| 31 | John Monahan | 27 | Head | Plumber | California |
| 32 | Kathleen Monahan | 28 | Wife | — | California |
| 33 | Richard Fetter | 45 | Head | Painter | California |
| 34 | Meloney Fetter | 45 | Wife | Laborer | California |
| 35 | Fetter | 19 | Son | Painter | California |
| 36 | Lawrence Bisio | 55 | Head | — | Italy |
| 37 | Frank J. Mchugh | 43 | Head | Policeman | California |
| 38 | Marion Mchugh | 39 | Wife | — | California |
| 39 | Mildred Mchugh | 18 | Daughter | None Worker | California |
| 40 | Frank Mchugh | 13 | Son | — | California |
Related Census Records
Pedigree Summary
Charles + 2 siblings
Gen 1 · 4 parents
~0.92
Gen 2 · 2 grandparents
~0.81
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)