Nels Nelson — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Audubon-County, Iowa

Our Model Tree links this Nels Nelson across the 1920, 1930 and 1940 US Censuses in Audubon-County, Iowa (XGBoost, ~Confirmed), with identified parents Anton & Ida — first a head (b.~1899), then head of a 4-person household.

Age 41 b. ~1899 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Audubon-County, Iowa
Surname	Nelson
Given Name	Nels C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	R
1935 Residence (County)	Audubon
Additional Details
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	70
Income (1939)	0
Highest Grade	No 8
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farmer
Township / Ward	Sharon Township
Est. Birth Year	~1899

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.

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

Name	Relation to head	Relative to Nels	Age	Birth yr
Nioma Nelson	Daughter	—	16	~1924
Loraine Nelson	Daughter	—	7	~1933
Nels Nelson	Head	—	41	~1899
Anna Nelson	Spouse	—	36	~1904

Census Appearances

1920

Audubon, Iowa

Son, age 21

Audubon, Iowa · implied b. ~1899 — 11 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Nels C
Relationship to Head	Son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farm laborer
Industry	Home farm
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Audubon, Iowa

Head, age 31

Audubon, Iowa · implied b. ~1899 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Nels C.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	31
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	24
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	General farm
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	R
Radio Set	Yes
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Audubon-County, Iowa

Head, age 41

Audubon-County, Iowa · implied b. ~1899 — 4 household members

Surname	Nelson
Given Name	Nels C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	R
1935 Residence (County)	Audubon
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	70
Income (1939)	0
Highest Grade	No 8
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

Our Model Tree links Nels Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Anton Nelson (~0.92 confidence) and mother Ida Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Anton Nelson

b. ~1875

Source father

● Household · direct · ~0.92

Mother

Ida Nelson

b. ~1886

Source mother

● Household · direct · ~0.92

This person

Anchor record

Nels Nelson

Head · 1940 · age 41 · b. ~1899 · Iowa

★ You are viewing this record

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

Original Census Page

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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01137-01051)

Line	Name	Age	Relation	Occupation	Birthplace
41	Bonnie Lou Nelsen	10	Daughter	—	Iowa
42	Mardell Nelsen	6	Daughter	—	Iowa
43	Hans M Bonnesen	68	Head	—	Denmark
44	Anna Bonnesen	62	Wife	—	Denmark
45	Alfred J Larsen	37	Head	Mechanic	Iowa
46	Ethel Larsen	33	Wife	—	Iowa
47	Darrell Larsen	1	Son	—	Iowa
48	Mrs. Emma Jennings	44	Head	Farmer	Iowa
49	Don Jennings	13	Son	—	Illinois
50	Louie Larsen	79	Mother	—	Denmark
51	Eddie K Andersen	39	Head	Farmer	Denmark
52	Dorothy Andersen	27	Wife	—	Iowa
53	Esther Andersen	2	Daughter	—	Iowa
54	Charles C Hansen	57	Head	Farmer	Illinois
55	Marie Hansen	39	Wife	—	Denmark
56	Raymond Hansen	22	Son	Farmer	Iowa
57	Peter J Hansen	67	Head	Farmer	Denmark
58	Christina Hansen	61	Wife	—	Denmark
59	Harold Hansen	26	Son	—	Iowa
60	Mrs. Christina Petersen	89	Mother-in-law	—	Denmark
61	Fred Lauritsen	29	Head	Farmer	Iowa
62	Anna Lauritsen	28	Wife	—	Iowa
63	Bernard Lauritsen	8	Son	—	Iowa
64	Irene Lauritsen	6	Daughter	—	Iowa
65	C. C. Nelson	73	Head	Farmer	Denmark
66	Melerine Nelson	62	Wife	—	Denmark
67	H. A. Lensch	41	Head	Farmer	Iowa
68	Gladys Lensch	37	Wife	—	Iowa
69	Herbert Lensch	18	Son	—	Iowa
70	Buel Lensch	18	Son	—	Iowa
71	Bill Lensch	16	Son	—	Iowa
72	Joyce Lensch	13	Daughter	—	Iowa
73	Wendell Lensch	11	Son	—	Iowa
74	Nels C Nelson THIS PERSON	41	Head	Farmer	Iowa
75	Anna Nelson	36	Wife	Farmer	Iowa
76	Nioma Nelson	16	Daughter	—	Iowa
77	Loraine Nelson	7	Daughter	—	Iowa
78	J. F. Bonnesen	61	Head	Farmer	Denmark
79	Johanna P. Bonnesen	58	Wife	—	Iowa
80	J. Son Holm	24	Son	Laborer	Iowa

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Pedigree Summary

Nels

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

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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