Fred Hoffman — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Scott-County, Iowa

Our Model Tree links this Fred Hoffman across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed), with identified parents Rudolf & Ida — first a head (b.~1904), then head of a 4-person household.

Age 36 b. ~1904 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Scott-County, Iowa
Surname	Hoffman
Given Name	Fred R
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Davenport city
1935 Residence (County)	Scott
Additional Details
Occupation	Mechanic
Industry	Retail Coal Yard
Class of Worker	PW
Hours Worked	42
Income (1939)	1300
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Mechanic
Township / Ward	Davenport City
Est. Birth Year	~1904

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 Fred	Age	Birth yr
Fred Hoffman	Head	—	36	~1904
Dorothy Hoffman	Spouse	—	34	~1906
Thomas Hoffman	Son	—	13	~1927
Donald Hoffman	Son	—	4	~1936

Census Appearances

1920

Scott, Iowa

Son, age 16

Scott, Iowa · implied b. ~1904 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hoffmann
Given Name	Fred R.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	16
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Sweden
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Scott, Iowa

Head, age 26

Scott, Iowa · implied b. ~1904 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hoffman
Given Name	Fred R.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	22
Father's Birthplace	Iowa
Mother's Birthplace	Sweden
Occupation	Auto Mechanic
Industry	Automobile
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	35
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Scott-County, Iowa

Head, age 36

Scott-County, Iowa · implied b. ~1904 — 4 household members

Surname	Hoffman
Given Name	Fred R
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Davenport city
1935 Residence (County)	Scott
Occupation	Mechanic
Industry	Retail Coal Yard
Class of Worker	PW
Hours Worked	42
Income (1939)	1300
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 Fred Hoffman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Rudolf Hoffmann (~0.92 confidence) and mother Ida Hoffmann (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Rudolf Hoffmann

b. ~1871

Source father

● Household · direct · ~0.92

Mother

Ida Hoffmann

b. ~1874

Source mother

● Household · direct · ~0.92

This person

Anchor record

Fred Hoffman

Head · 1940 · age 36 · b. ~1904 · 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 — Scott-County, Iowa Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-01202-00379)

Line	Name	Age	Relation	Occupation	Birthplace
1	Liffell M Wilkinson	33	Head	Minister	South Dakota
2	Mildred L Wilkinson	30	Wife	—	Illinois
3	Marilyn J Wilkinson	7	Daughter	—	Iowa
4	Carl B Wilkinson	2	Son	—	Iowa
6	Henry G Lantau	76	Head	—	Germany
7	John H Morovick	48	Head	Clerk	Iowa
8	Helen G Morovick	43	Sister	Housework	Iowa
9	Ray C Greenlee	54	Head	Stationary Engineer	Illinois
10	Leona Q Greenlee	37	Wife	—	Illinois
11	Betty J Greenlee	13	Daughter	—	Illinois
12	Robert M Greenlee	11	Son	—	Illinois
13	Ray C Greenlee	9	Son	—	Iowa
14	Dolores L Greenlee	6	Daughter	—	Iowa
15	Jack E Greenlee	4	Son	—	Iowa
16	James A Mccarthy	45	Head	Laborer	Ohio
17	Louise J Mccarthy	49	Wife	—	Iowa
18	Donna J Mccarthy	10	Daughter	—	Iowa
19	Edward Concannon	34	Head	Press Operator	Iowa
20	Margaret G Concannon	37	Wife	—	Illinois
21	Robert B Concannon	11	Son	—	Illinois
22	Fred Aristhich	29	Head	Grinder	Iowa
23	Maxine M Aristhich	29	Wife	—	Iowa
24	Fred W Aristhich	2	Son	—	Iowa
25	Fred R Hoffman THIS PERSON	36	Head	Mechanic	Iowa
26	Dorothy P Hoffman	34	Wife	—	Iowa
27	Thomas R Hoffman	13	Son	—	Iowa
28	Donald C Hoffman	4	Son	—	Iowa
29	Louis Fellows	23	Head	Shipping Clerk	Illinois
30	Alice B Fellows	20	Wife	—	Oklahoma
31	Michael L Fellows	0	Son	—	Iowa
32	James W Mooney	27	Head	Wood Worker	Iowa
33	Hazel Q Mooney	27	Wife	—	Iowa
34	James H Mooney	7	Son	—	Iowa
35	Rodney C Mooney	5	Son	—	Iowa
36	Henrietta M Kelly	71	Head	—	Ohio
37	John J Kelly	52	Son	Stationary Engineer	Iowa
38	Caroline B Kelly	49	Daughter in law	—	Iowa
39	Walter D Navin	49	Head	Printer	Iowa
40	Mattie E Navin	41	Wife	—	Iowa

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Pedigree Summary

Fred

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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