Clarence Campbell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Boone-County, Iowa

Our Model Tree links this Clarence Campbell across the 1920, 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 3-person household.

Age 53 b. ~1887 Male Head Born: Illinois Married

1940 Census Record Details

Census Year	1940
Location	Boone-County, Iowa
Surname	Campbell
Given Name	Clarence
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Worth Twp
Additional Details
Occupation	Farmer
Industry	Own Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	8
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Occupation	Farmer
Township / Ward	Worth Twp
Est. Birth Year	~1887

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 Clarence	Age	Birth yr
Clarence Campbell	Head	—	53	~1887
Colleen Campbell	Daughter	—	27	~1913
Daisy Campbell	Spouse	—	53	~1887

Census Appearances

1920

Boone, Iowa

Head, age 35

Boone, Iowa · implied b. ~1885 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Campbell
Given Name	Clarence
Relationship to Head	Head
Sex	M
Color / Race	White
Age	35
Marital Status	Married
Birthplace	Illinois
Father's Birthplace	Kentucky
Mother's Birthplace	Ohio
Occupation	farmer
Industry	gen farming
Class of Worker	OA
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Boone, Iowa

Head, age 45

Boone, Iowa · implied b. ~1885 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Campbell
Given Name	Clarence R.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Illinois
Age at First Marriage	23
Father's Birthplace	Kentucky
Mother's Birthplace	Ohio
Occupation	Farmer
Industry	General farm
Class of Worker	E
Can Read/Write	Yes
Home Owned/Rented	O
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Boone-County, Iowa

Head, age 53

Boone-County, Iowa · implied b. ~1887 — 3 household members

Surname	Campbell
Given Name	Clarence
Relationship to Head	Head
Sex	M
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Worth Twp
Occupation	Farmer
Industry	Own Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	8
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

Model Tree

Linked across censuses

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

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This person

Anchor record

Clarence Campbell

Head · 1940 · age 53 · b. ~1887 · 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 — Boone-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01141-00829)

Line	Name	Age	Relation	Occupation	Birthplace
1	Cary Hoffman	74	Lodger	—	Iowa
2	James L. Van Pelt	57	Head	Farmer	Iowa
3	Rena Van Pelt	47	Wife	—	Iowa
4	Jack Van Pelt	17	Son	Farm Hand	Iowa
5	Edward Van Pelt	16	Son	Farm Hand	Iowa
6	Genevieve Van Pelt	13	Daughter	—	Iowa
7	Zeta Van Pelt	12	Daughter	—	Iowa
8	Paul Van Pelt	10	Son	—	Iowa
9	Sarah Van Pelt	8	Daughter	—	Iowa
10	Lawrence Van Pelt	6	Son	—	Iowa
11	Clyde Updegraff	49	Head	Superintendent	Missouri
12	Gertie Updegraff	44	Wife	—	Missouri
13	Charles Stevens	55	Lodger	Game Keeper	England
14	Carl Fritz Henning	75	Head	Custodian	Germany
15	Minna Henning	67	Wife	—	Germany
16	Ira J. P. Rice	63	Head	Farmer	Iowa
17	Archie Delano	28	Head	Farmer	Iowa
18	Dorothy Smick	24	Housekeeper	Housekeeper	Iowa
19	Oscar Carlson	34	Cousin	Coal Miner	Iowa
20	David Parks	64	Head	Barber	Iowa
21	Mary D. Parks	71	Wife	—	Iowa
22	L. H. Eider	79	Brother-in-law	—	Iowa
23	C. O. Putt	40	Lodger	Farm Laborer	Iowa
24	Harry Huxley	39	Head	Farmer	Iowa
25	Ethel Huxley	28	Wife	—	Iowa
26	Harry Huxley	8	Son	—	Iowa
27	Donald Huxley	5	Son	—	Wisconsin
28	Marie Huxley	1	Daughter	—	Iowa
29	Clarence Campbell THIS PERSON	53	Head	Farmer	Illinois
30	Daisy Campbell	53	Wife	—	Illinois
31	Colleen Campbell	27	Daughter	—	Iowa
32	Ervin Crane	31	Head	Farmer	Iowa
33	Catherine Crane	27	Wife	—	Iowa
34	James Crane	5	Son	—	Iowa
35	Mildred Crane	3	Daughter	—	Iowa
36	R. P. Leppert	39	Head	Farmer	Iowa
37	Lucile Leppert	34	Wife	—	Iowa
38	Robert Leppert	14	Son	—	Iowa
39	Raymond Leppert	12	Son	—	Iowa
40	Dale Leppert	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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