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Jean Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Los-Angeles-County, California

Our Model Tree links this Jean Johnson across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.

Age 17 b. ~1923 Female Daughter Born: Minnesota Single

1940 Census Record Details

Census Year1940
LocationLos-Angeles-County, California
SurnameJohnson
Given NameJean
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age17
Marital StatusSingle
BirthplaceMinnesota
1935 Residence (City)Monrovia city
1935 Residence (County)Los Angeles
Additional Details
IndustryNo
Hours Worked0
Highest GradeHs 4
1935 ResidenceSame house
Birth StateMinnesota
Birth CountryUnited States
Birthplace (normalized)minnesota
Township / WardMonrovia City
Est. Birth Year~1923

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.

8 people recorded at the same address in the 1940 census.

Name Relation to head Relative to Jean Age Birth yr
Jerome Johnson Son — 6 ~1934
Thomas Johnson Son — 12 ~1928
Dorothy Johnson Daughter — 5 ~1935
Charles Johnson Son — 19 ~1921
Jean Johnson Daughter — 17 ~1923
Doris Johnson Son — 14 ~1926
Lillian Johnson Spouse — 47 ~1893
John Johnson Head — 50 ~1890

Census Appearances

1930
Los Angeles, …
Daughter, age 8
Los Angeles, California · implied b. ~1922 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Johnson
Given Name Joan E
Relationship to Head daughter
Sex F
Color / Race White
Age 8
Marital Status Single
Birthplace Minnesota
Father's Birthplace Minnesota
Mother's Birthplace Minnesota
Occupation none
Can Read/Write Yes
Birth State Minnesota
Birth Country United States
Birthplace (normalized) minnesota
1940
Los-Angeles-County, California
Daughter, age 17
Los-Angeles-County, California · implied b. ~1923 — 8 household members
Surname Johnson
Given Name Jean
Relationship to Head Daughter
Sex F
Color / Race White
Age 17
Marital Status Single
Birthplace Minnesota
1935 Residence (City) Monrovia city
1935 Residence (County) Los Angeles
Industry No
Hours Worked 0
Highest Grade Hs 4
1935 Residence Same house
Birth State Minnesota
Birth Country United States
Birthplace (normalized) minnesota

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.
Linked across censuses
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 17 · b. ~1923 · California
★ You are viewing this record
Sibling
Thomas Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Johnson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Johnson
Sibling · 1940 · age 14
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 — Los-Angeles-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00237-00710)

Line Name Age Relation Occupation Birthplace
41 Donna Jean White 7 Daughter — Pennsylvania
42 Blanche Klinger 57 Head — Pennsylvania
43 Anna Patterson 88 Mother — Pennsylvania
44 Eva Miller 75 Partner — West Virginia
45 Lena Door 53 Head — Missouri
46 Nina Graill 62 Lodger — Massachusetts
47 John D. Johnson 50 Head — Minnesota
48 Lillian Johnson 47 Wife — Minnesota
49 Charles Johnson 19 Son Clerk Minnesota
50 Jean Johnson THIS PERSON 17 Daughter — Minnesota
51 Doris Johnson 14 Son — Minnesota
52 Thomas Johnson 12 Son — California
53 Jerome Johnson 6 Son — California
54 Dorothy Johnson 5 Daughter — California
55 John Cook 34 Head Laborer Missouri
56 Mattie Cook 31 Wife — Colorado
57 Doris Cook 9 Daughter — Kansas
58 Geraldine Cook 8 Daughter — Kansas
59 Anna Davis 52 Head Teacher Kansas
60 Joseph Davis 67 Head Proprietor Russia
61 Bessie Davis 54 Wife Proprietor Germany
62 Herbert Davis 15 Son — New York
63 Frank Miller 26 Head Teacher Nebraska
64 Lois Miller 24 Wife — Nebraska
65 Frank Jr. Miller 3 Son — Nebraska
66 Lois Marie Miller 3 Daughter — Nebraska
67 James Trent 30 Head House Work Illinois
68 James Trent 4 Son — California
69 Pearl Trent 3 Daughter — California
70 Frank Justice 39 Head Shoe-Operator Kansas
71 Ena May Justice 33 Wife — California
72 Elena Velta Justice 14 Daughter — California
73 Amon Short 55 Head Salesman Maine
74 Clara X. Short 54 Wife — Iowa
75 Ellen Short 20 Daughter Secretary California
76 George Griffith 24 Head Worker California
77 Louise Griffith 21 Wife — California
78 Anna Louise Griffith 3 Daughter — Indiana
79 Catherine Griffith 59 Mother Housework Canada English
80 John White 38 Head Mechanic Texas

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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)

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