RC
Ruth Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Ruth Carlson across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Oliver & Elizabeth — first a daughter (b.~1917), then head of a 2-person household.
Age 23
b. ~1917
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Carlson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Cashier |
| Industry | 5 & 10¢ Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Cashier |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1917 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Carlson | Head | — | 50 | ~1890 |
| Ruth Carlson | Daughter | — | 23 | ~1917 |
Census Appearances
1920
San Francisco, …
Daughter, age 3
San Francisco, California · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth O. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Daughter, age 13
San Francisco, California · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 23
San-Francisco-County, California · implied b. ~1917 — 2 household members
| Surname | Carlson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Cashier |
| Industry | 5 & 10¢ Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 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 Ruth Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oliver Carlson (~0.92 confidence) and mother Elizabeth Carlson (~0.92 confidence) and mother Elizabeth Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oliver Carlson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Carlson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Carlson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Carlson
Daughter · 1940 · age 23 · b. ~1917 · 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 — 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-t0627-00309-00564)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie M. Rodgers | 60 | Head | — | Virginia |
| 2 | Thomas M. Benoist | 22 | Head | Electrical Technician | California |
| 3 | Lydia Benoist | 84 | Grandmother | — | California |
| 4 | June Houghton | 25 | Lodger | — | California |
| 5 | Simon T. Caniff | 41 | Head | Truck Driver | Siberia |
| 6 | Mary Caniff | 35 | Wife | — | Bulgaria |
| 7 | Charles Caniff | 14 | Son | — | New York |
| 8 | Theodore Caniff | 12 | Son | — | New York |
| 9 | Annette Anderson | 71 | Head | Housekeeper | Sweden |
| 10 | Theresa Anderson | 60 | Sister | — | Sweden |
| 11 | Ina Olson | 25 | Niece | Typist | California |
| 12 | — | None | — | — | — |
| 13 | Patrick Fahey | 69 | Head | Hod Carrier | Irish Free State |
| 14 | Bridgit Fahey | 67 | Wife | — | Irish Free State |
| 15 | James Fahey | 31 | Son | Orderly | California |
| 16 | Francis Fahey | 29 | Son | Lineman | California |
| 17 | Vincent Mcgrath | 39 | Head | Sheet Metal Worker | Connecticut |
| 18 | Beverly M. Mcgrath | 35 | Wife | — | Arizona |
| 19 | Marie M. Mcgrath | 18 | Daughter | — | Arizona |
| 20 | Vincent L. Mcgrath | 17 | Son | — | California |
| 21 | James E. Mcgrath | 15 | Son | — | California |
| 22 | Jean R. Mcgrath | 14 | Daughter | — | California |
| 23 | John Samy | 37 | Head | Warehouseman | Wisconsin |
| 24 | Audrey P. Samy | 35 | Wife | — | Ohio |
| 25 | Evelyn J. Davidson | 33 | Head | Candy Packer | California |
| 26 | Lorraine A. Davidson | 14 | Daughter | — | California |
| 27 | Robert C. Davidson | 9 | Son | — | California |
| 28 | Eugenie Chester | 57 | Mother | — | California |
| 29 | Frank Emerick | 50 | Head | Lather | New Jersey |
| 30 | Pauline F. Emerick | 37 | Wife | — | California |
| 31 | Paul R. Emerick | 6 | Son | — | California |
| 32 | Barbara Emerick | 5 | Daughter | — | California |
| 33 | Ernest P. Emerick | 1 | Son | — | California |
| 34 | Robert Coulter | 54 | Head | Auto Body Builder | North Ireland |
| 35 | Martha Coulter | 51 | Wife | — | North Ireland |
| 36 | James Coulter | 25 | Son | Asst Cashier | California |
| 37 | Emma Rosedale | 67 | Head | — | Germany |
| 38 | Elizabeth Carlson | 50 | Head | — | Sweden |
| 39 | Ruth Carlson THIS PERSON | 23 | Daughter | Cashier | California |
| 40 | Peter J. Tierney | 52 | Head | Tavern Keeper | Irish Free State |
Pedigree Summary
Ruth
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)