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Robert Jensen — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Ottawa-County, Ohio

Our Model Tree links this Robert Jensen across the 1930 and 1940 US Censuses in Ottawa-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.

Age 15 b. ~1925 Male Son Born: Ohio Single

1940 Census Record Details

Census Year1940
LocationOttawa-County, Ohio
SurnameJensen
Given NameRobert
Relationship to HeadSon
SexM
Color / RaceWhite
Age15
Marital StatusSingle
BirthplaceOhio
1935 Residence (City)R
1935 Residence (County)Ottawa
Additional Details
Industry0
Highest GradeNo 8
1935 ResidenceOhio
Birth StateOhio
Birth CountryUnited States
Birthplace (normalized)ohio
Township / WardPortage Twp
Est. Birth Year~1925

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 Robert Age Birth yr
Robert Jensen Son — 15 ~1925
Hans Jensen Head — 55 ~1885
Elmore Jensen Daughter — 19 ~1921
Karen Jensen Spouse — 54 ~1886
Leroy Jensen Son — 17 ~1923
Vivian Jensen Daughter — 11 ~1929
Ronald Jensen Son — 8 ~1932

Census Appearances

1930
Ottawa, Ohio
Son, age 4
Ottawa, Ohio · implied b. ~1926 — 13 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Jensen
Given Name Robert
Relationship to Head Son
Sex M
Color / Race White
Age 4
Marital Status Single
Birthplace Ohio
Father's Birthplace Denmark
Mother's Birthplace Denmark
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio
1940
Ottawa-County, Ohio
Son, age 15
Ottawa-County, Ohio · implied b. ~1925 — 7 household members
Surname Jensen
Given Name Robert
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace Ohio
1935 Residence (City) R
1935 Residence (County) Ottawa
Industry 0
Highest Grade No 8
1935 Residence Ohio
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio

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 Robert Jensen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Jensen
Son · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
Leroy Jensen
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Jensen
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmore Jensen
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vivian Jensen
Sibling · 1940 · age 11
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 — Ottawa-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03125-00567)

Line Name Age Relation Occupation Birthplace
1 James Warner 36 Head Laborer Ohio
2 Ruby Warner 26 Wife — Ohio
3 Lelora Warner 7 Daughter — Ohio
4 James Jr. Warner 5 Son — Ohio
5 Sandra Warner 2 Daughter — Ohio
6 Andrew Zofko 52 Head Laborer Czechoslovakia
7 Susan Zofko 31 Wife — Czechoslovakia
8 Martha Melick 3 Step-Daughter — Argentina
9 Mike Sloboda 34 Head Laborer Poland
10 Anna Sloboda 36 Wife — Penn
11 Helen Sloboda 17 Daughter 80 Ohio
12 Robert Sloboda 5 Son — Ohio
13 Walter Sloboda 1 Son — Ohio
14 Lester Mockry 33 Head Laborer Ohio
15 Earl Mockry 28 Brother Laborer Ohio
16 Sylvester Shirley 67 Head Farmer Ohio
17 Eva Shirley 63 Wife — Ohio
18 Steve Krajcik 42 Head Laborer Czechoslovakia
19 Veronica Krajcik 40 Wife — Czechoslovakia
20 Mary Krajcik 14 Daughter — Ohio
21 Helen Krajcik 11 Daughter — Ohio
22 Hans Jensen 55 Head Fireman Denmark
23 Karen Jensen 54 Wife — Denmark
24 Elmore Jensen 19 Daughter Housework Ohio
25 Leroy Jensen 17 Son — Ohio
26 Robert Jensen THIS PERSON 15 Son — Ohio
27 Vivian Jensen 11 Daughter — Ohio
28 Ronald Jensen 8 Son — Ohio
29 August Johannsen 84 Head — Germany
30 John P. Johannsen 59 Son — Ohio
31 Anna Gamel 54 Daughter — Ohio
32 Gilbert Sterling 23 Head Laborer Illinois
33 Florence Sterling 23 Wife — West Virginia
34 Charles Sterling 5 Son — West Virginia
35 Joyce Sterling 0 Daughter — West Virginia
36 Ross Sherry 40 Head — New Jersey
37 Paseo Sherry 23 Son Laborer New Jersey
38 Amos Reardon 40 Head Laborer Kentucky
39 Ellen Reardon 38 Wife — Kentucky
40 James Reardon 15 Son — Kentucky

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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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