MH
Mary Hoffman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Iowa
Our Model Tree links this Mary Hoffman across the 1930 and 1940 US Censuses in Carroll-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Iowa |
| Surname | Hoffman |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Twp |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Pleasant Valley Twp |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hoffman | Daughter | — | 11 | ~1929 |
| Jos Hoffman | Head | — | 46 | ~1894 |
| Lawrence Hoffman | Son | — | 13 | ~1927 |
| Albert Hoffman | Son | — | 17 | ~1923 |
| Andrew Hoffman | Son | — | 7 | ~1933 |
| Norman Hoffman | Son | — | 6 | ~1934 |
| John Hoffman | Son | — | 14 | ~1926 |
| Lambert Hoffman | Son | — | 10 | ~1930 |
| Leonard Hoffman | Son | — | 16 | ~1924 |
| Mary Hoffman | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Carroll, Iowa
Daughter, age
Carroll, Iowa · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Carroll-County, Iowa
Daughter, age 11
Carroll-County, Iowa · implied b. ~1929 — 10 household members
| Surname | Hoffman |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Twp |
| 1935 Residence (County) | Carroll |
| 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 Mary Hoffman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hoffman
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Lambert Hoffman
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Hoffman
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Hoffman
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Hoffman
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Hoffman
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hoffman
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norman Hoffman
Sibling · 1940 · age 6
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 — Carroll-County, Iowa
Open full size
1940 US Federal Census — Carroll-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01144-01015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence H Muehling | 36 | Head | Farming | Illinois |
| 2 | Catherine D Muehling | 34 | Wife | — | Iowa |
| 3 | Louis H Muehling | 11 | Son | — | Iowa |
| 4 | Rose M Muehling | 9 | Daughter | — | Iowa |
| 5 | Edwin C Muehling | 7 | Son | — | Iowa |
| 6 | Evelyn C Muehling | 6 | Daughter | — | Iowa |
| 7 | Barbara A Muehling | 5 | Daughter | — | Iowa |
| 8 | Edna M Muehling | 3 | Daughter | — | Iowa |
| 9 | Marilyn A Muehling | 1 | Daughter | — | Iowa |
| 10 | Roy Spieker | 55 | Head | Farming | Iowa |
| 11 | Regina C Spieker | 52 | Wife | — | Iowa |
| 12 | Mercedes C Spieker | 19 | Daughter | Maid | Iowa |
| 13 | Matthias B H Reineke | 52 | Head | Farming | Iowa |
| 14 | Theresia M Reineke | 45 | Wife | — | Nebraska |
| 15 | Lawrence Luke | 38 | Head | Farming | Iowa |
| 16 | Mary M Luke | 33 | Wife | — | Iowa |
| 17 | Lucille A Luke | 11 | Daughter | — | Iowa |
| 18 | Alvin J Luke | 8 | Son | — | Iowa |
| 19 | Marylou C Luke | 5 | Daughter | — | Iowa |
| 20 | Lawrence J Jr Luke | 5 | Son | — | Iowa |
| 21 | Waneta M Luke | 3 | Daughter | — | Iowa |
| 22 | Vernon J Luke | 2 | Son | — | Iowa |
| 23 | Jos. H Hoffman | 46 | Head | Farming | Iowa |
| 24 | Mary Hoffman | 46 | Wife | — | Iowa |
| 25 | Albert Hoffman | 17 | Son | Farming | Iowa |
| 26 | Leonard P Hoffman | 16 | Son | Farming | Iowa |
| 27 | John H Hoffman | 14 | Son | Farming | Iowa |
| 28 | Lawrence J Hoffman | 13 | Son | — | Iowa |
| 29 | Mary A Hoffman THIS PERSON | 11 | Daughter | — | Iowa |
| 30 | Lambert J Hoffman | 10 | Son | — | Iowa |
| 31 | Andrew J Hoffman | 7 | Son | — | Iowa |
| 32 | Norman H Hoffman | 6 | Son | — | Iowa |
| 33 | Frank Gute | 74 | Head | Farming | Iowa |
| 34 | Anna Gute | 69 | Wife | — | Iowa |
| 35 | Frances Gute | 43 | Daughter | Maid | Iowa |
| 36 | Raymond J Trusch | 25 | Son-in-law | Farming | Nebraska |
| 37 | Cecilia J Trusch | 33 | Daughter | Maid | Iowa |
| 38 | John Sr Droege | 65 | Head | Farming | Iowa |
| 39 | Anna M Droege | 42 | Daughter | Maid | Iowa |
| 40 | John L Droege | 39 | Son | Farming | Iowa |
Related Census Records
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)