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Jack Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Genesee-County, Michigan

Our Model Tree links this Jack Johnson across the 1930 and 1940 US Censuses in Genesee-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 9-person household.

Age 25 b. ~1915 Male Son Born: Michigan Married

1940 Census Record Details

Census Year1940
LocationGenesee-County, Michigan
SurnameJohnson
Given NameJack
Relationship to HeadSon
SexM
Color / RaceWhite
Age25
Marital StatusMarried
BirthplaceMichigan
1935 Residence (City)Flint
1935 Residence (County)Genesee
Additional Details
OccupationPolisher
Industryauto body factory
Class of WorkerPW
Hours Worked40
Income (1939)436
Highest GradeNo 8
1935 ResidenceSame Place
Birth StateMichigan
Birth CountryUnited States
Birthplace (normalized)michigan
OccupationPolisher
Township / WardFlint
Est. Birth Year~1915

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.

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

Name Relation to head Relative to Jack Age Birth yr
Doris Kramer Daughter — 13 ~1927
Helen Johnson Daughter — 23 ~1917
Olinda Kramer Daughter — 17 ~1923
Fred Kramer Head — 51 ~1889
Jack Johnson Other — 1 ~1939
Jack Johnson Son — 25 ~1915
Edwin Kramer Son — 15 ~1925
Fred Kramer Son — 21 ~1919
Helen Kramer Spouse — 42 ~1898

Census Appearances

1930
Genesee, Michigan
Son, age 15
Genesee, Michigan · implied b. ~1915 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Johnson
Given Name Jack C
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace Michigan
Father's Birthplace Michigan
Mother's Birthplace Ohio
Can Read/Write Yes
Birth State Michigan
Birth Country United States
Birthplace (normalized) michigan
1940
Genesee-County, Michigan
Son, age 25
Genesee-County, Michigan · implied b. ~1915 — 9 household members
Surname Johnson
Given Name Jack
Relationship to Head Son
Sex M
Color / Race White
Age 25
Marital Status Married
Birthplace Michigan
1935 Residence (City) Flint
1935 Residence (County) Genesee
Occupation Polisher
Industry auto body factory
Class of Worker PW
Hours Worked 40
Income (1939) 436
Highest Grade No 8
1935 Residence Same Place
Birth State Michigan
Birth Country United States
Birthplace (normalized) michigan

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 Jack Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Johnson
Son · 1940 · age 25 · b. ~1915 · Michigan
★ You are viewing this record
Sibling
Olinda Kramer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Kramer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Johnson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Kramer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Kramer
Sibling · 1940 · age 13
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 — Genesee-County, Michigan Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-01892-00692)

Line Name Age Relation Occupation Birthplace
1 Elton J. Allen 27 Head Service Man Michigan
2 Lora Allen 24 Wife — Michigan
3 Richard Allen 2 Son — Michigan
4 Duane A. Allen 0 Son — Michigan
5 Laura D. Wilson 41 Head — N. Carolina
6 Shirley J. Wilson 26 Son Sorting Fruit N. Carolina
7 Earlin Woods 16 Nephew — N. Carolina
8 Alex Badall 36 Lodger Truck Driver Persia
10 Walter C. Courtemanche 42 Head Truck Driver Michigan
11 Clara Courtemanche 33 Wife — Connecticut
12 Victor Courtemanche 15 Son — Michigan
13 Robert Courtemanche 12 Daughter — Michigan
14 Dorothy Courtemanche 8 Daughter — Michigan
15 Gatra Courtemanche 2 Daughter — Michigan
16 Fred Kramer 51 Head Janitor Russia
17 Helen Kramer 42 Wife Matron Germany
18 Fred Kramer 21 Son Salesman Ohio
19 Olinda Kramer 17 Daughter — Michigan
20 Edwin Kramer 15 Son — Michigan
21 Doris Kramer 13 Daughter — Michigan
22 Jack Johnson THIS PERSON 25 Son Polisher Michigan
23 Helen Johnson 23 Daughter Inspection Ohio
24 Jack D. Johnson 1 Grandson — Michigan
25 John J. Norton 37 Head Welder Michigan
26 Elsie Norton 35 Wife — Michigan
27 James W. Norton 17 Son — Michigan
28 Marjorie B. Norton 16 Daughter — Michigan
29 Frederick J. Norton 15 Son — Michigan
30 Gloria Norton 13 Daughter — Michigan
31 Jacqueline Norton 10 Daughter — Michigan
32 Colbert Norton 6 Son — Michigan
33 Mollie Larson 66 Head Matron Indiana
34 Warren Larson 20 Son Apprentice Michigan
35 Vivian R. Larson 15 Daughter — Michigan
36 Olive Donigan 51 Head — Michigan
37 Loyd Donigan 20 Son Concession Michigan
38 Burton Donigan 17 Son — Michigan
39 Archie Donigan 15 Son — Michigan
40 Russel Donigan 13 Son — Michigan

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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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