John Bass — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Calhoun-County, Iowa

Our Model Tree links this John Bass across the 1920, 1930 and 1940 US Censuses in Calhoun-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 4-person household.

Age 64 b. ~1876 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Calhoun-County, Iowa
Surname	Bass
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	64
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Williams Twp.
1935 Residence (County)	Calhoun
Additional Details
Occupation	farmer
Industry	farm
Class of Worker	OA
Hours Worked	40
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farmer
Township / Ward	Williams Twp
Est. Birth Year	~1876

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 John	Age	Birth yr
Dollie Bass	Spouse	—	59	~1881
John Bass	Head	—	64	~1876
Lloyd Bass	Son	—	39	~1901
Lena Bass	Other	—	40	~1900

Census Appearances

1920

Calhoun, Iowa

Head, age 45

Calhoun, Iowa · implied b. ~1875 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Bass
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Iowa
Father's Birthplace	New York
Mother's Birthplace	Massachusetts
Occupation	Farmer
Industry	Grain Farm
Class of Worker	OA
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Calhoun, Iowa

Head, age 53

Calhoun, Iowa · implied b. ~1877 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Bass
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	21
Father's Birthplace	New York
Mother's Birthplace	Massachusetts
Occupation	Farmer
Industry	General Farm
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	R
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Calhoun-County, Iowa

Head, age 64

Calhoun-County, Iowa · implied b. ~1876 — 4 household members

Surname	Bass
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	64
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Williams Twp.
1935 Residence (County)	Calhoun
Occupation	farmer
Industry	farm
Class of Worker	OA
Hours Worked	40
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

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

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This person

Anchor record

John Bass

Head · 1940 · age 64 · b. ~1876 · 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 — Calhoun-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01144-00517)

Line	Name	Age	Relation	Occupation	Birthplace
41	Glen Coats	42	Lodger	—	Iowa
42	William Heller	59	Head	Farmer	Iowa
43	Amanda Heller	57	Wife	—	Iowa
44	Herman D. Heller	32	Head	Farm Labor	Iowa
45	Velma Heller	24	Wife	—	Iowa
46	Alfred P. Graeber	54	Head	Farmer	Iowa
47	Josephine Graeber	45	Wife	—	Iowa
48	Merle Graeber	18	son	Farm Labor	Iowa
49	Omar Ellis	47	Head	Farmer	Kentucky
50	Beulah Ellis	45	Wife	—	Kentucky
51	Robert Ellis	18	son	Farm Labor	Iowa
52	Harold Ellis	16	son	—	Iowa
53	Raymond Ellis	11	son	—	Iowa
54	Donald Ellis	7	son	—	Iowa
55	Laverne Ellis	4	son	—	Iowa
56	George Vondrak	44	Head	Farmer	Bohemia
57	Dorothy Vondrak	28	wife	—	Minnesota
58	Bernice Vondrak	10	Daughter	—	Iowa
59	Billy Vondrak	7	son	—	Iowa
60	Frankie Vondrak	5	son	—	Iowa
61	Joan Vondrak	2	Daughter	—	Iowa
62	Jerry Blaha	23	Hired hand	Farm Labor	Bohemia
63	Ray Boultas	53	Father-in-law	Farm Labor	Illinois
64	John Bass THIS PERSON	64	Head	Farmer	Iowa
65	Dollie Bass	59	Wife	—	Iowa
66	Lloyd Bass	39	son	Truck Operator	Iowa
67	Lena Bass	40	Daughter-in-law	—	Iowa
68	William Tinnerman	42	Head	Farmer	Illinois
69	Louise Tinnerman	38	wife	—	Iowa
70	Betty Tinnerman	12	Daughter	—	Iowa
71	Hershew Tinnerman	3	son	—	Iowa
72	Adolph D. Miller	52	Head	Farmer	Iowa
73	Margaret Miller	47	wife	—	Illinois
74	Maxine Miller	21	Daughter	Teacher	Iowa
75	Gerald Miller	19	son	Farm Labor	Iowa
76	Edward Miller	18	son	—	Iowa
77	Billy Miller	14	son	—	Iowa
78	William C. Miller	40	Head	Farmer	Iowa
79	Anna Miller	38	Wife	—	Iowa
80	Dale Miller	12	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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