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Helen Hall — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Helen Hall across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Rodney & Jessie — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Hall |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Oak Park |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Secretary |
| Industry | Steel Corp |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1560 |
| Highest Grade | H 4 |
| 1935 Residence | Same Town |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Secretary |
| Township / Ward | Oak Park |
| Est. Birth Year | ~1912 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Hall | Daughter | — | 28 | ~1912 |
| Archie Frey | Head | — | 51 | ~1889 |
| George Hall | Other | — | 51 | ~1889 |
| Mabel Frey | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Cook, Illinois
Daughter, age 8
Cook, Illinois · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hall |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 18
Cook, Illinois · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hall |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 28
Cook-County, Illinois · implied b. ~1912 — 4 household members
| Surname | Hall |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Oak Park |
| 1935 Residence (County) | Cook |
| Occupation | Secretary |
| Industry | Steel Corp |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1560 |
| Highest Grade | H 4 |
| 1935 Residence | Same Town |
| 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 Hall across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Rodney Hall (~0.92 confidence) and mother Jessie Hall (~0.92 confidence) and father Archie Frey (~0.92 confidence) and mother Mabel Frey (~0.92 confidence) and father Sydney Hall (~0.92 confidence) and mother Jessie Hall (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Rodney Hall
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Jessie Hall
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Archie Frey
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mabel Frey
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Sydney Hall
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Jessie Hall
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Hall
Daughter · 1940 · age 28 · b. ~1912 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00785-00039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jessie M Sager | 45 | Wife | — | Wisconsin |
| 42 | Catherine Sager | 17 | Daughter | — | Illinois |
| 43 | Marion Sager | 15 | Daughter | — | Illinois |
| 44 | Jean Sager | 12 | Daughter | — | Illinois |
| 45 | Julia Winkler | 63 | Boarder | Metal Polisher | Wisconsin |
| 46 | Martin O'Keefe | 56 | Head | Watchman | Ireland |
| 47 | Anna O'Keefe | 55 | Wife | — | Ireland |
| 48 | Mary O'Keefe | 24 | Daughter | Typist | Illinois |
| 49 | Margaret O'Keefe | 18 | Daughter | — | Illinois |
| 50 | Mary B Tracy | 64 | Sister-in-law | Ticket Agent | Ireland |
| 51 | Edward A Stretzel | 70 | Head | Candy Salesman | Illinois |
| 52 | Teresa Stretzel | 68 | Wife | — | Illinois |
| 53 | Louise Stretzel | 30 | Daughter | Stenographer | Illinois |
| 54 | Archie Frey | 51 | Head | Clerk | Illinois |
| 55 | Mabel Frey | 51 | Wife | — | Illinois |
| 56 | George Hall | 51 | Son-in-law | Service Man | Illinois |
| 57 | Helen Hall THIS PERSON | 28 | Daughter | Secretary | Illinois |
| 58 | John Frey | 83 | Head | — | Illinois |
| 59 | Lloyd Frey | 52 | Son | Laborer | Illinois |
| 60 | Robert E Garth | 57 | Head | Business Agent | Illinois |
| 61 | Anna Garth | 56 | Wife | — | Illinois |
| 62 | Robert G Tuber | 34 | Head | Printer | Illinois |
| 63 | Jeanette Tuber | 36 | Wife | Stenographer | Illinois |
| 64 | Robert Skorheim | 11 | Son | — | Illinois |
| 65 | William Rohde | 82 | Head | — | Norway |
| 66 | Alma Rohde | 46 | Wife | — | Norway |
| 67 | William Schultz | 18 | Lodger | Clerk | Illinois |
| 68 | Robert Schultz | 18 | Lodger | Clerk | Illinois |
| 69 | R. A. Thomas | 59 | Head | Watchman | Illinois |
| 70 | Julia Thomas | 56 | Wife | — | England |
| 71 | Alex Hassell | 51 | Head | Hardware Salesman | Illinois |
| 72 | Jennie Hassell | 52 | Wife | — | Illinois |
| 73 | Vernon Hassell | 22 | Son | — | Illinois |
| 74 | Gail K Power | 40 | Head | Office Manager | Nevada |
| 75 | Cornelia Power | 40 | Wife | — | England |
| 76 | Betty Power | 14 | Daughter | — | Illinois |
| 77 | Gail K Power | 10 | Son | — | Illinois |
| 78 | Alva Bonniwell | 47 | Head | Auditor | Illinois |
| 79 | Theresa Bonniwell | 37 | Wife | — | Illinois |
| 80 | Betty J Bonniwell | 6 | Daughter | — | Illinois |
Pedigree Summary
Helen
Gen 1 · 6 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)