Carl Jensen — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Shelby-County, Iowa

Our Model Tree links this Carl Jensen across the 1920, 1930 and 1940 US Censuses in Shelby-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 3-person household.

Age 56 b. ~1884 Male Head Born: Denmark Married

1940 Census Record Details

Census Year	1940
Location	Shelby-County, Iowa
Surname	Jensen
Given Name	Carl M.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Denmark
1935 Residence (City)	Harlan City
1935 Residence (County)	Shelby
Naturalization Status	Naturalized
Additional Details
Occupation	Salesman
Industry	Feed Co.
Class of Worker	PW
Hours Worked	40
Income (1939)	760
Highest Grade	H 4
1935 Residence	Iowa
Birth Country	Denmark
Birthplace (normalized)	denmark
Occupation	Salesman
Township / Ward	Harlan City
Est. Birth Year	~1884

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.

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

Name	Relation to head	Relative to Carl	Age	Birth yr
Kimball Jensen	Son	—	27	~1913
Carl Jensen	Head	—	56	~1884
Ruth Jensen	Spouse	—	45	~1895

Census Appearances

1920

Shelby, Iowa

Other, age 33

Shelby, Iowa · implied b. ~1887 — 13 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Jensen
Given Name	Carl M.
Relationship to Head	Boarder
Sex	M
Color / Race	White
Age	33
Marital Status	Single
Birthplace	Denmark
Naturalization Status	Un
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Laborer
Industry	Stock
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Danish
Birth Country	Denmark
Birthplace (normalized)	denmark

1930

Shelby, Iowa

Head, age 45

Shelby, Iowa · implied b. ~1885 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Jensen
Given Name	Carl M.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Denmark
Naturalization Status	Naturalized
Year of Immigration	1894
Age at First Marriage	41
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Salesmanager
Industry	Minerals
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Danish
Home Owned/Rented	R
Home Value / Rent	45
Radio Set	R
Veteran	No
Birth Country	Denmark
Birthplace (normalized)	denmark

1940

Shelby-County, Iowa

Head, age 56

Shelby-County, Iowa · implied b. ~1884 — 3 household members

Surname	Jensen
Given Name	Carl M.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Denmark
1935 Residence (City)	Harlan City
1935 Residence (County)	Shelby
Naturalization Status	Naturalized
Occupation	Salesman
Industry	Feed Co.
Class of Worker	PW
Hours Worked	40
Income (1939)	760
Highest Grade	H 4
1935 Residence	Iowa
Birth Country	Denmark
Birthplace (normalized)	denmark

Model Tree

Linked across censuses

Our Model Tree links Carl Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Carl Jensen

Head · 1940 · age 56 · b. ~1884 · 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

37 people indexed on this census page (nara:1940:m-t0627-01204-00239)

Line	Name	Age	Relation	Occupation	Birthplace
1	Margaret Carey	23	Lodger	Teacher	Iowa
2	Minnie L. Christiansen	51	Head	—	Denmark
3	Naomi Christiansen	15	Daughter	—	Iowa
4	James C. Olson	74	Head	—	Denmark
5	Sine Olson	71	Wife	Housekeeper	Denmark
6	Roy L. Olson	33	Son	Manager	Iowa
7	Mildred L. Olson	31	Daughter in law	—	Iowa
9	Harry C. Ogden	36	Head	Linotyper	Iowa
10	Clarice Ogden	34	Wife	—	Iowa
11	Martin N. Ogden	5	Son	—	Iowa
12	Sheryl A. Ogden	2	Son	—	Iowa
14	Burdette Lundberg	26	Head	Laborer	Iowa
15	Leona Lundberg	23	Wife	—	Iowa
16	Bernard A. Beeker	28	Head	Salesman	Iowa
17	Pearl K. Beeker	23	Wife	—	Iowa
18	Bruce J. Beeker	4	Son	—	Iowa
19	Gary J. Beeker	3	Son	—	Iowa
20	Constance Beeker	2	Daughter	—	Iowa
21	Russell J. Beeker	1	Son	—	Iowa
22	Maggie C. Beeker	59	Mother in law	—	Iowa
23	Joseph J. Marco	60	Head	Deputy	Iowa
24	Clara Marco	50	Wife	—	Iowa
25	Carl M. Jensen THIS PERSON	56	Head	Salesman	Denmark
26	Ruth A. Jensen	45	Wife	—	Nebraska
27	Kimball Lyle Jensen	27	Son	—	Illinois
28	Alfred Sorensen	38	Head	Physician & Surgeon	Iowa
29	Cilla Sorensen	38	Wife	—	Iowa
30	Alfred L. Sorensen	5	Son	—	Utah
31	Mary L. Sorensen	3	Daughter	—	Utah
33	John C. Mibonak	62	Head	—	Holland
34	Alice J. Mibonak	52	Wife	—	Iowa
35	Sophia C. Hansen	75	Head	—	Denmark
36	Myrtle M. Blaine	62	Head	—	Iowa
37	Eva M. Blaine	19	Daughter	Clerk	Iowa
38	Lars C. Christensen	88	Head	—	Denmark
39	Dorothea J. Eskesen	69	Head	—	Denmark
40	Peter C. Sorensen	90	Head	—	Denmark

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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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