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Jean Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this Jean Johnson across the 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Johnson |
| Given Name | Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | La Jolla |
| 1935 Residence (County) | San Diego |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Escondido Judicial |
| Est. Birth Year | ~1926 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jean | Age | Birth yr |
|---|---|---|---|---|
| Jean Johnson | Daughter | — | 14 | ~1926 |
| Carl Johnson | Head | — | 37 | ~1903 |
| Carl Johnson | Son | — | 16 | ~1924 |
| Margaret Johnson | Spouse | — | 35 | ~1905 |
| Katherine Johnson | Daughter | — | 9 | ~1931 |
| James Johnson | Son | — | 11 | ~1929 |
Census Appearances
1930
San Diego, …
Daughter, age 4
San Diego, California · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jean M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Arizona |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Daughter, age 14
San-Diego-County, California · implied b. ~1926 — 6 household members
| Surname | Johnson |
| Given Name | Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | La Jolla |
| 1935 Residence (County) | San Diego |
| Highest Grade | 8 |
| 1935 Residence | California |
| 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 Jean Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jean Johnson
Daughter · 1940 · age 14 · b. ~1926 · California
★ You are viewing this record
Sibling
James Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Johnson
Sibling · 1940 · age 9
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-Diego-County, California
Open full size
1940 US Federal Census — San-Diego-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00296-00126)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ardelle Cochran | 44 | Wife | — | Missouri |
| 2 | Shirley Rae Cochran | 11 | Daughter | — | Missouri |
| 3 | Harry W. Tassell | 55 | Head | Farmer | England |
| 4 | Victoria Tassell | 35 | Wife | Teacher | Arizona |
| 5 | Gordon Tassell | 18 | Son | — | California |
| 6 | Mary J. Tassell | 15 | Daughter | — | California |
| 7 | William Davis | 72 | Lodger | — | Illinois |
| 8 | Suzanne Jaquier | 73 | Head | — | Switzerland |
| 9 | Perley Kent | 80 | Head | — | Rhode Island |
| 10 | William Kent | 48 | Head | Farmer | California |
| 11 | Effie Kent | 76 | Mother | — | Vermont |
| 12 | Edith John | 60 | Housekeeper | Housekeeper | Indiana |
| 13 | Carl I. Johnson | 37 | Head | Mechanic | Wyoming |
| 14 | Margaret K. Johnson | 35 | Wife | — | Arizona |
| 15 | Carl Jr. Johnson | 16 | Son | — | California |
| 16 | Jean Johnson THIS PERSON | 14 | Daughter | — | California |
| 17 | James Johnson | 11 | Son | — | California |
| 18 | Katherine Johnson | 9 | Daughter | — | California |
| 20 | Robert D. Mcferon | 43 | Head | Farmer | Washington |
| 21 | Clothilda Mcferon | 44 | Wife | — | Arizona |
| 22 | Roberta Mcferon | 17 | Daughter | — | California |
| 23 | Arthur O. Walker | 60 | Lodger | — | Massachusetts |
| 24 | James E. Griffin | 22 | Lodger | Metal Lather | California |
| 25 | Edward Guzman | 14 | Lodger | — | Arizona |
| 26 | Frank Guzman | 13 | Lodger | — | California |
| 27 | Budwin Mcferon | 35 | Head | Farmer | Washington |
| 28 | Pauline Mcferon | 35 | Wife | — | Alabama |
| 29 | Myrtle J. Mcferon | 15 | Daughter | — | California |
| 30 | Budwin Jr. Mcferon | 12 | Son | — | California |
| 31 | James E. Mcferon | 4 | Son | — | California |
| 32 | Edwin Meyer | 15 | Lodger | — | California |
| 33 | James Meyer | 12 | Lodger | — | California |
| 34 | George Rasmussen | 65 | Head | Farmer | Denmark |
| 35 | Pauline B. Rasmussen | 56 | Wife | — | Nebraska |
| 36 | Margaret Rasmussen | 20 | Daughter | — | California |
| 37 | Ben R. Johnston | 42 | Head | — | Wisconsin |
| 38 | Crawford Rear | 52 | Head | Farmer | Kansas |
| 39 | Cylina Rear | 74 | Mother | Landlord | Ohio |
| 40 | Morris Herbert | 61 | Head | Farmer | Connecticut |
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)