Mabel Nelson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Audubon-County, Iowa

Our Model Tree links this Mabel Nelson across the 1920, 1930 and 1940 US Censuses in Audubon-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 4-person household.

Age 44 b. ~1896 Female Spouse Born: Minnesota Married

1940 Census Record Details

Census Year	1940
Location	Audubon-County, Iowa
Surname	Nelson
Given Name	Mabel
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Exira Township
1935 Residence (County)	Audubon
Additional Details
Highest Grade	Hs 1
1935 Residence	Same House
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Township / Ward	Exira Township
Est. Birth Year	~1896

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 Mabel	Age	Birth yr
Olive Nelson	Daughter	—	17	~1923
William Nelson	Head	—	51	~1889
John Nelson	Son	—	11	~1929
Mabel Nelson	Spouse	—	44	~1896

Census Appearances

1920

Audubon, Iowa

Spouse, age 23

Audubon, Iowa · implied b. ~1897 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelsen
Given Name	Mabel
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	23
Marital Status	Married
Birthplace	Minnesota
Father's Birthplace	Minnesota
Mother's Birthplace	Minnesota
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Audubon, Iowa

Spouse, age 34

Audubon, Iowa · implied b. ~1896 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Mabel E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Minnesota
Age at First Marriage	21
Father's Birthplace	Minnesota
Mother's Birthplace	Minnesota
Can Read/Write	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Audubon-County, Iowa

Spouse, age 44

Audubon-County, Iowa · implied b. ~1896 — 4 household members

Surname	Nelson
Given Name	Mabel
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Exira Township
1935 Residence (County)	Audubon
Highest Grade	Hs 1
1935 Residence	Same House
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Linked across censuses

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

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This person

Anchor record

Mabel Nelson

Spouse · 1940 · age 44 · b. ~1896 · 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 — Audubon-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01137-00837)

Line	Name	Age	Relation	Occupation	Birthplace
41	John Roberts	10	Son	—	Iowa
42	Annie Roberts	8	Daughter	—	Iowa
43	Jefferson Roberts	4	Son	—	Iowa
44	Isaac B. Hansen	57	Head	Farmer	Iowa
45	Eva Hansen	55	Wife	—	Iowa
46	Gerald Hansen	25	Son	Laborer	Iowa
47	Paul Hansen	21	Son	Laborer	Iowa
48	Elmer C. Wolf	46	Head	Farmer	Iowa
49	Olive Wolf	41	Wife	—	Iowa
50	Bernard Wolf	19	Son	—	Iowa
51	Virgil Wolf	17	Son	—	Iowa
52	Wendell Wolf	7	Daughter	—	Iowa
53	Emme Wolf	69	Head	—	Iowa
54	John H. Kilworth	68	Head	Farmer	Illinois
55	Annie Kilworth	65	Wife	—	Iowa
56	John G. Bungard	41	Head	Farmer	Iowa
57	Oza Bungard	37	Wife	—	Oklahoma
58	Lorraine Bungard	18	Daughter	—	Iowa
59	Jake Bungard	14	Son	—	Iowa
60	Nola Rae Bungard	3	Daughter	—	Iowa
61	Frank B. Smith	44	Head	Farmer	Iowa
62	Lydia Smith	46	Wife	—	Iowa
63	Mack Smith	19	Son	Laborer	Iowa
64	Margaret Smith	17	Daughter	Laborer	Iowa
65	Junius Smith	15	Son	Laborer	Iowa
66	Mads Vold Jens	64	Head	Farmer	Denmark
67	Haakon Jens	30	Son	Partner	Denmark
68	Louisa Jens	25	Daughter-in-law	—	Iowa
69	Dorothy Jens	5	Daughter	—	Iowa
70	Richard Jens	1	Son	—	Iowa
71	Holger W. Madsvold	33	Head	Farmer	Denmark
72	Thorwald Madsvold	26	Brother	Partner	Iowa
73	Ernest L. Johnson	32	Head	Farmer	Iowa
74	Violet Johnson	28	Wife	—	Iowa
75	Doloris Johnson	8	Daughter	—	Iowa
76	Joyce Johnson	5	Daughter	—	Iowa
77	William C. Nelson	51	Head	Farmer	Iowa
78	Mabel Nelson THIS PERSON	44	Wife	—	Minnesota
79	Olive Nelson	17	Daughter	—	Iowa
80	John Nelson	11	Son	—	Iowa

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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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