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John Olsen — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Oconto-County, Wisconsin

Our Model Tree links this John Olsen across the 1930 and 1940 US Censuses in Oconto-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.

Age 19 b. ~1921 Male Son Born: Wisconsin Single

1940 Census Record Details

Census Year1940
LocationOconto-County, Wisconsin
SurnameOlsen
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age19
Marital StatusSingle
BirthplaceWisconsin
1935 Residence (City)Sevits
1935 Residence (County)Door
Additional Details
OccupationLaborer
IndustryMuck farm
Class of WorkerOA
Hours Worked40
Income (1939)72
Highest GradeHs 4
1935 ResidenceSame place
Birth StateWisconsin
Birth CountryUnited States
Birthplace (normalized)wisconsin
OccupationLaborer
Township / WardSevits
Est. Birth Year~1921

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.

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

Name Relation to head Relative to John Age Birth yr
Ole Olsen Head — 50 ~1890
Anna Olsen Spouse — 43 ~1897
David Olsen Son — 9 ~1931
Robert Olsen Son — 4 ~1936
John Olsen Son — 19 ~1921
Annette Olsen Daughter — 23 ~1917
Melvin Olsen Son — 21 ~1919

Census Appearances

1930
Oconto, Wisconsin
Son, age 9
Oconto, Wisconsin · implied b. ~1921 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Olsen
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 9
Marital Status Single
Birthplace Wisconsin
Father's Birthplace Wisconsin
Mother's Birthplace Minnesota
Can Read/Write Yes
Birth State Wisconsin
Birth Country United States
Birthplace (normalized) wisconsin
1940
Oconto-County, Wisconsin
Son, age 19
Oconto-County, Wisconsin · implied b. ~1921 — 7 household members
Surname Olsen
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 19
Marital Status Single
Birthplace Wisconsin
1935 Residence (City) Sevits
1935 Residence (County) Door
Occupation Laborer
Industry Muck farm
Class of Worker OA
Hours Worked 40
Income (1939) 72
Highest Grade Hs 4
1935 Residence Same place
Birth State Wisconsin
Birth Country United States
Birthplace (normalized) wisconsin

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 John Olsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Olsen
Son · 1940 · age 19 · b. ~1921 · Wisconsin
★ You are viewing this record
Sibling
Annette Olsen
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Olsen
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Olsen
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Olsen
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 — Oconto-County, Wisconsin Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-04506-00505)

Line Name Age Relation Occupation Birthplace
1 Clarence Fremad 45 Head Muck Farm Wisconsin
2 Sophia Fremad 46 Wife Finishing Russia
3 Clarence Jr Fremad 19 Son Laborer Wisconsin
4 Raymond Fremad 18 Son — Wisconsin
5 John Young 25 Head — Wisconsin
6 Francis Young 23 Brother Laborer Wisconsin
7 Young Young 21 Lady Laborer Wisconsin
8 Edward Haskins 62 Head Laborer Wisconsin
9 Lulla Haskins 53 Wife — Wisconsin
10 Loretta Haskins 27 Daughter Maid Wisconsin
11 Ole Olsen 50 Head Farm Wisconsin
12 Anna Olsen 43 Wife — Wisconsin
13 Annette Olsen 23 Daughter Housekeeper Wisconsin
14 Melvin Olsen 21 Son Laborer Wisconsin
15 John Olsen THIS PERSON 19 Son Laborer Wisconsin
16 David Olsen 9 Son — Wisconsin
17 Robert Olsen 4 Son — Wisconsin
18 Naheem Buckarma 32 Head Fishing Wisconsin
19 Frances Buckarma 23 Wife Fish Industry Wisconsin
20 George Reed 32 Head Fishing Wisconsin
21 Gladys Reed 30 Wife — Wisconsin
22 Robert Reed 9 Son — Wisconsin
23 Mary Reed 4 Daughter — Wisconsin
24 Sandra Reed 2 Daughter — Wisconsin
25 Douglas Reed 0 Son — Wisconsin
26 Arthur Vander Bush 55 Head — Wisconsin
27 Ralph Vander Bush 17 Son — Wisconsin
28 John Vander Bush 38 Head Fishing Wisconsin
29 Mary Vander Bush 37 Wife — Wisconsin
30 Cora Vander Bush 16 Daughter — Wisconsin
31 Henry Vander Bush 14 Son — Wisconsin
32 Robert Vander Bush 12 Son — Wisconsin
33 Helen Vander Bush 10 Daughter — Wisconsin
34 Harley Groll 21 Head Fishing Wisconsin
35 Delma Groll 21 Wife — Wisconsin
36 John Groll 4 Daughter — Wisconsin
37 Naomi Groll 2 Daughter — Wisconsin
38 Richard Jakubowski 23 Head Fishing Wisconsin
39 Nettie Jakubowski 76 Head — Wisconsin
40 John Forestal 42 Head Fishing Wisconsin

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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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