Nels Nelson — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Hamilton-County, Iowa

Our Model Tree links this Nels Nelson across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Iowa (XGBoost, ~Confirmed), with identified parents Frank & Mary — first a head (b.~1893), then head of a 3-person household.

Age 47 b. ~1893 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Hamilton-County, Iowa
Surname	Nelson
Given Name	Nels
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Lyon Township
1935 Residence (County)	Hamilton
Additional Details
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	70
Income (1939)	110
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farmer
Township / Ward	Lyon Township
Est. Birth Year	~1893

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 Nels	Age	Birth yr
Nina Nelson	Daughter	—	5	~1935
Nels Nelson	Head	—	47	~1893
Thelma Nelson	Spouse	—	33	~1907

Census Appearances

1920

Hamilton, Iowa

Son, age 27

Hamilton, Iowa · implied b. ~1893 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Nels
Relationship to Head	Son
Sex	M
Color / Race	White
Age	27
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Laborer
Industry	Home Farm
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Danish
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Hamilton, Iowa

Other, age 37

Hamilton, Iowa · implied b. ~1893

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Nelson
Given Name	Nels
Relationship to Head	Head-H
Sex	M
Color / Race	White
Age	37
Marital Status	Divorced
Birthplace	Iowa
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	General farm
Class of Worker	E
Can Read/Write	Yes
Home Owned/Rented	R
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Hamilton-County, Iowa

Head, age 47

Hamilton-County, Iowa · implied b. ~1893 — 3 household members

Surname	Nelson
Given Name	Nels
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Lyon Township
1935 Residence (County)	Hamilton
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	70
Income (1939)	110
Highest Grade	No 8
1935 Residence	Same place
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 Frank Nelson (~0.92 confidence) and mother Mary Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Frank Nelson

b. ~1858

Source father

● Household · direct · ~0.92

Mother

Mary Nelson

b. ~1867

Source mother

● Household · direct · ~0.92

This person

Anchor record

Nels Nelson

Head · 1940 · age 47 · b. ~1893 · 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 — Hamilton-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01164-00464)

Line	Name	Age	Relation	Occupation	Birthplace
1	Grace Davik	40	Wife	—	Iowa
2	Sterling Davik	15	Son	—	Iowa
3	Betty L. Davik	14	Daughter	—	Iowa
4	Arling L. Davik	12	Son	—	Iowa
5	Donald Davik	10	Son	—	Iowa
6	Shirley Davik	9	Daughter	—	Iowa
7	Angelene Davik	7	Daughter	—	Iowa
8	Willard Johnson	47	Head	Farmer	Sweden
9	Inez Johnson	49	Wife	—	Iowa
10	Dixie Johnson	13	Daughter	—	Iowa
11	Bonnie Johnson	10	Daughter	—	Iowa
12	Virgil Vining	47	Head	Farmer	Iowa
13	Harold Vining	26	Son	Farmer	Iowa
14	Gale Vining	17	Son	—	Iowa
15	Robert Vining	20	Son	—	Iowa
16	Nels Nelson THIS PERSON	47	Head	Farmer	Iowa
17	Thelma Nelson	33	Wife	—	Iowa
18	Nina Nelson	5	Daughter	—	Iowa
19	Herbert O. Foval	67	Head	Farmer	Illinois
20	Stella Foval	51	Wife	—	Iowa
21	Eugene Foval	19	Son	Farmer	Iowa
22	Fred Fosgren	53	Head	Farmer	Illinois
23	Luella Fosgren	50	Wife	—	Iowa
24	Fred Jr. Fosgren	16	Son	—	Iowa
25	Rasmus Braband	55	Head	Farmer	Iowa
26	Angelyn Braband	27	Daughter	—	Iowa
27	Harris Braband	25	Son	Farmer	Iowa
28	Randolf Kallem	53	Head	Farmer	Illinois
29	Curtis Kallem	28	Wife	Farmer	Iowa
30	Grace M. Kallem	26	Daughter	—	Iowa
31	Donald Kallem	5	Son	—	Iowa
32	Carolyn Kallem	3	Daughter	—	Iowa
33	Axel Magnussen	41	Head	Farmer	Sweden
34	Lillie Magnussen	42	Wife	—	Iowa
35	Delmar Magnussen	15	Son	—	Iowa
36	Mavis Magnussen	14	Daughter	—	Iowa
37	Kenneth Magnussen	11	Son	—	Iowa
38	Dale Magnussen	10	Son	—	Iowa
39	Orlan Magnussen	9	Son	—	Iowa
40	Ruth Magnussen	4	Daughter	—	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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