WZ
William Zimmerman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Zimmerman across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents George & Leonora — first a head (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Machinist |
| Industry | Valve manufact. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machinist |
| Township / Ward | Chicago |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Delores Zimmerman | Daughter | — | 10 | ~1930 |
| William Zimmerman | Head | — | 27 | ~1913 |
| Ella Zimmerman | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Labor |
| Industry | Foundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 27
Cook-County, Illinois · implied b. ~1913 — 3 household members
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Machinist |
| Industry | Valve manufact. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 William Zimmerman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Zimmerman (~0.92 confidence) and mother Leonora Zimmerman (~0.92 confidence) and father William Zimmerman (~0.92 confidence) and mother Hattie Zimmerman (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Zimmerman
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Leonora Zimmerman
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
William Zimmerman
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Hattie Zimmerman
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Zimmerman
Head · 1940 · age 27 · b. ~1913 · 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-t0627-00994-00941)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucille Marino | 9 | daughter | — | Illinois |
| 2 | William Zimmerman THIS PERSON | 27 | head | Machinist | Illinois |
| 3 | Ella Zimmerman | 27 | wife | — | Illinois |
| 4 | Delores Zimmerman | 10 | daughter | — | Illinois |
| 5 | Lawrence Jones | 37 | head | Shipping Clerk | Illinois |
| 6 | Elizabeth Jones | 36 | wife | — | Illinois |
| 7 | Elizabeth Jones | 7 | daughter | — | Illinois |
| 8 | John Haubner | 32 | lodger | Assembly | Michigan |
| 9 | John Doortacke|Doortacker | 26 | head | Truck Driver | Illinois |
| 10 | Sophia Doortacke|Doortacker | 28 | wife | — | Illinois |
| 11 | Jacob Doortacke|Doortacker | 69 | father | — | Illinois |
| 12 | Heila Leander | 68 | head | — | Sweden |
| 13 | Emma Leander | 63 | wife | — | Sweden |
| 14 | Herman Vitrolugt | 43 | head | Salesman | Holland |
| 15 | Clara Vitrolugt | 41 | wife | — | Holland |
| 16 | Frank Vitrolugt | 18 | son | — | Holland |
| 17 | Clara Vitrolugt | 13 | daughter | — | Illinois |
| 18 | John Vitrolugt | 10 | son | — | Illinois |
| 19 | Peter Jager | 48 | head | Truck Driver | Holland |
| 20 | Alice Jager | 40 | wife | — | Holland |
| 21 | Janet Jager | 18 | daughter | Typist | Illinois |
| 22 | Ralph P. Lindstadt | 44 | head | Machinist | Iowa |
| 23 | Bessie A. Lindstadt | 44 | wife | Waitress | Missouri |
| 24 | Richard A. Lindstadt | 15 | son | — | Illinois |
| 25 | Lorraine Johnson | 63 | head | Asst. Manager | Sweden |
| 26 | Mary Toomey | 23 | daughter | Stenographer | Illinois |
| 27 | Edward Bertagna | 43 | head | Roadman | Italy |
| 28 | Mary Bertagna | 42 | wife | — | Illinois |
| 29 | Eileen Bertagna | 15 | daughter | — | Illinois |
| 30 | Jean Bertagna | 13 | daughter | — | Illinois |
| 31 | Edward Jr. Bertagna | 7 | son | — | Illinois |
| 32 | Rita Sayers | 19 | daughter | Sales Clerk | Illinois |
| 33 | Anthony Pastory | 35 | head | Laborer | Hungary |
| 34 | Agatha Pastory | 29 | wife | — | Illinois |
| 35 | Donald Pastory | 7 | son | — | Illinois |
| 36 | Robert Pastory | 4 | son | — | Illinois |
| 37 | John Marey | 34 | head | Baker | France |
| 38 | Jessie Marey | 35 | wife | — | Illinois |
| 39 | Eugene Marey | 2 | son | — | Illinois |
| 40 | Edward Plocek | 10 | son | — | Illinois |
Pedigree Summary
William
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 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)