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Harry Hoffman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marshall-County, Iowa
Our Model Tree links this Harry Hoffman across the 1920, 1930 and 1940 US Censuses in Marshall-County, Iowa (XGBoost, ~Confirmed), with identified parents Rachel & Rachel — first a son (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Iowa |
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marshalltown |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Occupation | Laborer |
| Industry | Com'n Labor |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 250 |
| Highest Grade | 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Marshalltown |
| Est. Birth Year | ~1905 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Hoffman | Son | — | 35 | ~1905 |
| Rachel Hoffman | Head | — | 63 | ~1877 |
| Roy Hoffman | Son | — | 39 | ~1901 |
| Mabel Hoffman | Daughter | — | 37 | ~1903 |
Census Appearances
1920
Marshall, Iowa
Son, age 14
Marshall, Iowa · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Heuffman |
| Given Name | Harry |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Marshall, Iowa
Son, age 25
Marshall, Iowa · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Pop Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marshall-County, Iowa
Son, age 35
Marshall-County, Iowa · implied b. ~1905 — 4 household members
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marshalltown |
| 1935 Residence (County) | Marshall |
| Occupation | Laborer |
| Industry | Com'n Labor |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 250 |
| Highest Grade | 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Harry Hoffman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rachel Hoffman (~0.92 confidence) and mother Rachel Heuffman (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rachel Hoffman
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Rachel Heuffman
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Hoffman
Son · 1940 · age 35 · b. ~1905 · Iowa
★ You are viewing this record
Sibling
Roy Hoffman
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Hoffman
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marshall-County, Iowa
Open full size
1940 US Federal Census — Marshall-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01182-00555)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mae R Weldt | 69 | Wife | — | Iowa |
| 2 | Laura G Robinson | 67 | Sister-in-L | — | Iowa |
| 3 | Maude Jackson | 71 | Sister-in-L | — | Iowa |
| 4 | E. H. Bohnsack | 38 | Head | Assembler | Iowa |
| 5 | May L Bohnsack | 38 | Wife | — | Iowa |
| 6 | Harlan D Bohnsack | 18 | Son | — | Iowa |
| 7 | George W Johnson | 52 | Head | Painter | Iowa |
| 8 | Iantha Johnson | 48 | Wife | — | Illinois |
| 9 | Catherine A Boles | 24 | Daughter | — | Iowa |
| 10 | Milo Boles | 26 | Son-in-law | Bench Worker | Iowa |
| 11 | Marvin L Miller | 17 | Nephew | — | Iowa |
| 12 | Rachel Hoffman | 63 | Head | — | Iowa |
| 13 | Roy Bru Hoffman | 39 | Son | Dishwasher | Iowa |
| 14 | Mabel M Hoffman | 37 | Daughter | Operator | Iowa |
| 15 | Harry Hoffman THIS PERSON | 35 | Son | Laborer | Iowa |
| 16 | W. R. Ramsey | 75 | Head | Pensioned | Ohio |
| 17 | Emma B. Ramsey | 62 | Wife | — | Indiana |
| 18 | Helen Ramsey | 18 | Grand-D | — | Iowa |
| 19 | E. E. Frye | 34 | Head | Com Labor | Iowa |
| 20 | Sophia Frye | 31 | Wife | — | Iowa |
| 21 | Robert E Frye | 11 | Son | — | Iowa |
| 22 | Rudy A Frye | 7 | Son | — | Iowa |
| 23 | Beverly J Frye | 2 | Daughter | — | Iowa |
| 24 | Mrs C. E. Smith | 57 | Head | — | Iowa |
| 25 | G. W. Lawrence | 69 | Head | Lawyer | Illinois |
| 26 | Nellie S Lawrence | 64 | Wife | — | New York |
| 27 | Joe B Tye | 39 | Head | Attorney | Missouri |
| 28 | Doris H Tye | 39 | Wife | — | Iowa |
| 29 | Joe B. Jr Tye | 14 | Son | — | Iowa |
| 30 | Ayonelle Tye | 10 | Daughter | — | Iowa |
| 31 | James S Gorman | 57 | Head | Salesman | Iowa |
| 32 | Alpha Reka Gorman | 49 | Wife | — | Iowa |
| 33 | Allan G. Gorman | 4 | Daughter | — | Iowa |
| 34 | H. H. Carson | 61 | Head | Trucker | Iowa |
| 35 | Cora B Carson | 58 | Wife | — | Iowa |
| 36 | D. H. Larsen | 27 | Head | Helper | Iowa |
| 37 | Mildred M Larsen | 28 | Wife | — | Iowa |
| 38 | Jandra M Larsen | 4 | Daughter | — | Iowa |
| 39 | W. B. Wood | 71 | Head | Secy. Treas | Ohio |
| 40 | Mabel B Wood | 66 | Wife | — | Ohio |
Pedigree Summary
Harry + 2 siblings
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)