Jens Jensen — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Shelby-County, Iowa

Our Model Tree links this Jens Jensen across the 1920, 1930 and 1940 US Censuses in Shelby-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 6-person household.

Age 60 b. ~1880 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Shelby-County, Iowa
Surname	Jensen
Given Name	Jens E.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Shelby Town
1935 Residence (County)	Shelby
Additional Details
Occupation	Supervisor
Industry	Shelby County
Class of Worker	PW
Hours Worked	55
Income (1939)	1400
Highest Grade	H 1
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Supervisor
Township / Ward	Shelby Town
Est. Birth Year	~1880

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 Jens	Age	Birth yr
Jennie Jensen	Spouse	—	50	~1890
James Jensen	Son	—	17	~1923
Alvin Jensen	Son	—	27	~1913
Jens Jensen	Head	—	60	~1880
Marlin Jensen	Son	—	23	~1917
Frances Jensen	Daughter	—	19	~1921

Census Appearances

1920

Audubon, Iowa

Head, age 39

Audubon, Iowa · implied b. ~1881 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Jensen
Given Name	Jens P.M.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	39
Marital Status	Widowed
Birthplace	Iowa
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	Gen Farm
Class of Worker	OA
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Shelby, Iowa

Head, age 50

Shelby, Iowa · implied b. ~1880 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Jensen
Given Name	Jens A.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	27
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	Farm
Class of Worker	V
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	16
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Shelby-County, Iowa

Head, age 60

Shelby-County, Iowa · implied b. ~1880 — 6 household members

Surname	Jensen
Given Name	Jens E.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Shelby Town
1935 Residence (County)	Shelby
Occupation	Supervisor
Industry	Shelby County
Class of Worker	PW
Hours Worked	55
Income (1939)	1400
Highest Grade	H 1
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

Our Model Tree links Jens Jensen across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.

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This person

Anchor record

Jens Jensen

Head · 1940 · age 60 · b. ~1880 · Iowa

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Shelby-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01204-00379)

Line	Name	Age	Relation	Occupation	Birthplace
1	Edmund B. Korn	38	Head	Night Watchman	Pennsylvania
2	Ida Korn	37	Wife	—	Iowa
3	Russell Korn	15	Son	—	Iowa
4	Mary Korn	14	Daughter	—	Iowa
5	Edmund Korn	12	Son	—	Iowa
6	Irma Korn	10	Daughter	—	Iowa
7	Jean Korn	7	Son	—	Iowa
8	Alan Korn	5	Son	—	Iowa
9	Donna Korn	3	Daughter	—	Iowa
10	Carroll Korn	1	Son	—	Iowa
11	Omer Meyers	54	Head	Service Station	Iowa
12	Sara Meyers	55	Wife	—	Iowa
13	Susan D. Vail	68	Head	—	Illinois
14	Fred Coker	47	Head	Proprietor	Iowa
15	Lucie Coker	48	Wife	—	Illinois
16	Marian Jane Coker	8	Daughter	—	Iowa
17	Jens E. Jensen THIS PERSON	60	Head	Supervisor	Iowa
18	Jennie C. Jensen	50	Wife	—	Iowa
19	Alvin Jensen	27	Son	Sailor	Iowa
20	Marlin Jensen	23	Son	Portable Feed Grinder	Iowa
21	Frances Jensen	19	Daughter	Teacher	Iowa
22	James Jensen	17	Son	—	Iowa
23	Ella Foster	67	Head	—	Iowa
24	Glen Foster	35	Son	Carpenter	Iowa
25	James Smith	59	Head	Farmer	Iowa
26	Bessie Smith	56	Wife	—	Iowa
27	Ralph W. Helph	48	Head	Laborer	Iowa
28	Ethel Helph	35	Wife	—	Iowa
29	Evelyn Helph	13	Daughter	—	Iowa
30	Corbett Helph	13	Son	—	Iowa
31	Elmer Helph	11	Son	—	Iowa
32	Alice Helph	9	Daughter	—	Iowa
33	Louis Helph	4	Son	—	Iowa
34	Mary Helph	2	Daughter	—	Iowa
35	Charles Brown	66	Head	Carpenter	Iowa
36	Viola Brown	52	Wife	—	Nebraska
37	Thelma Lois Brown	12	Daughter	—	Iowa
38	Neil Borden	32	Head	School Teacher	Nebraska
39	Marguerite Borden	31	Wife	—	Nebraska
40	William Bennett	26	Head	High School Teacher	North Dakota

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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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