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Helen Hoffman — 1920 US Census Record
Model Tree available1920 United States Federal Census · St Clair, Illinois
Our Model Tree links this Helen Hoffman across the 1920, 1930 and 1940 US Censuses in St Clair, Illinois (XGBoost, ~Confirmed), with identified parents Jacob & Jos — first a daughter (b.~1919), then head of a 6-person household.
Age 1
b. ~1919
Female
Daughter
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | St Clair, Illinois |
| Surname | Hoffman |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Margaret Hoffman | Daughter | — | 12 | ~1908 |
| Mary Hoffman | Spouse | — | 38 | ~1882 |
| Jacob Hoffman | Head | — | 38 | ~1882 |
| Kathleen Hoffman | Daughter | — | 8 | ~1912 |
| Helen Hoffman | Daughter | — | 1 | ~1919 |
| James O'Reilly | Other | — | 54 | ~1866 |
Census Appearances
1920
St Clair, …
Daughter, age 1
St Clair, Illinois · implied b. ~1919 — 6 household members
| Surname | Hoffman |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Daughter, age 12
St Clair, Illinois · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffmann |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Daughter, age 22
St.-Clair-County, Illinois · implied b. ~1918 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffmann |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St Louis |
| 1935 Residence (County) | St Clair |
| Occupation | Stenographer |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 780 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Helen Hoffman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jacob Hoffman (~0.92 confidence) and father Jos Hoffmann (~0.92 confidence) and mother Mary Hoffman (~0.92 confidence) and mother Mary Hoffmann (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jacob Hoffman
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Jos Hoffmann
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Mary Hoffman
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Mary Hoffmann
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Hoffman
Daughter · 1920 · age 1 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Kathleen Hoffman
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hoffman
Sibling · 1920 · age 12
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
1920 US Federal Census — St Clair, Illinois
Open full size
1920 US Federal Census — St Clair, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu404unit:1111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sarah A Chamberlain | 68 | mother | — | Illinois |
| 2 | Arminda E Mayer | 31 | sister | Presser | Illinois |
| 3 | Cora B Moulan | 43 | Head | — | Mississippi |
| 4 | John Moulan | 22 | son | Airman | Illinois |
| 5 | Juanita Moulan | 16 | daughter | Clerk | Illinois |
| 6 | Harry G Mason | 58 | Head | Peddler | Illinois |
| 7 | Mary Mason | 60 | wife | — | Missouri |
| 8 | Roy J Grant | 32 | son | Laborer | Missouri |
| 9 | Frank Rodefield | 35 | Head | Iron Blow | Missouri |
| 10 | Sadie Rodefield | 38 | wife | — | Illinois |
| 11 | Fred Bixman | 19 | boarder | Glassmaker | Illinois |
| 12 | Edward Kempf | 24 | Head | Loader | Illinois |
| 13 | Mabel Kempf | 19 | wife | — | Illinois |
| 14 | Raymond Kempf | 1 | son | — | Illinois |
| 15 | Fredrick A Hiskett | 50 | Head | Clerk | England |
| 16 | Jane A Hiskett | 38 | wife | — | England |
| 17 | Cyril A Hiskett | 17 | son | Iron Rope | England |
| 18 | Gladys E Hiskett | 17 | daughter | Stenograph | England |
| 19 | Edward Lieber | 26 | Head | Repairman | Illinois |
| 20 | Adelaide Lieber | 23 | wife | None | Texas |
| 21 | Eileen Lieber | 5 | daughter | — | Illinois |
| 22 | Wayne Lieber | 2 | son | — | Illinois |
| 23 | Robert J Boxner | 23 | Head | Fireman | Illinois |
| 24 | Isabel Boxner | 23 | wife | — | Missouri |
| 25 | Theresa Schmid | 23 | sister in law | Waitress | Missouri |
| 26 | William Schmid | 18 | brother in law | Clerk | Missouri |
| 27 | Fred W Neal | 33 | Head | Oiler | Illinois |
| 28 | Agnes Neal | 32 | wife | — | Arkansas |
| 29 | Rose Mckillip | 61 | mother in law | — | Missouri |
| 30 | Bernard Neal | 9 | son | — | Illinois |
| 31 | Rosemary Neal | 7 | daughter | — | Illinois |
| 32 | Robert Neal | 5 | son | — | Illinois |
| 33 | Florence Neal | 3 | daughter | — | Illinois |
| 34 | Frances Neal | 2 | daughter | — | Illinois |
| 35 | Frank Jr Preinle | 30 | Head | Printer | Missouri |
| 36 | Ida R Preinle | 24 | wife | — | Missouri |
| 37 | Frank P Preinle | 4 | son | — | Illinois |
| 38 | Edward U Preinle | 3 | son | — | Illinois |
| 39 | Jacob W Hoffman | 38 | Head | Engineer | Illinois |
| 40 | Mary Hoffman | 38 | wife | — | Illinois |
| 41 | Margaret Hoffman | 12 | daughter | — | Illinois |
| 42 | Kathleen Hoffman | 8 | daughter | — | Illinois |
| 43 | Helen Hoffman THIS PERSON | 1 | daughter | — | Illinois |
| 44 | James O'Reilly | 54 | companion | — | Illinois |
| 45 | Jessie Obied | 24 | Head | Laborer | Missouri |
| 46 | Mattie Obied | 16 | wife | — | Missouri |
| 47 | Mrs Black | 75 | mother in law | — | Missouri |
| 48 | Henderson Oliver | 49 | Head | Laborer | Missouri |
| 49 | Essie Oliver | 28 | wife | — | Missouri |
| 50 | William Oliver | 16 | son | — | Illinois |
Pedigree Summary
Helen + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)