JN
John Novak — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Novak across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Male
Head
Born: Poland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Laborer |
| Industry | School Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 660 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Laborer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1891 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Edward Novak | Son | — | 9 | ~1931 |
| Mamie Novak | Daughter | — | 14 | ~1926 |
| Mary Novak | Spouse | — | 50 | ~1890 |
| John Novak | Head | — | 49 | ~1891 |
| Helen Novak | Daughter | — | 15 | ~1925 |
Census Appearances
1920
Cook, Illinois
Son, age 30
Cook, Illinois · implied b. ~1890 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Poland |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Stock yards |
| Class of Worker | w |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1930
Cook, Illinois
Other, age 38
Cook, Illinois · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1923 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Steel Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 49
Cook-County, Illinois · implied b. ~1891 — 5 household members
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | School Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 660 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 John Novak across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Novak (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Novak
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Novak
Head · 1940 · age 49 · b. ~1891 · 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-t0627-00946-00618)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sophie Wasmonsky | 26 | Daughter | — | Illinois |
| 2 | Raymond Wasmonsky | 1 | Son | — | Illinois |
| 3 | Edward Rudiger | 31 | Head | Maintenance | Illinois |
| 4 | Jeanette Rudiger | 27 | Wife | — | Illinois |
| 5 | Conrad Rudiger | 4 | Son | — | Illinois |
| 6 | Joseph Machloda | 39 | Head | Order Filler | Pennsylvania |
| 7 | Alice Machloda | 29 | Wife | Picking Chickens | Pennsylvania |
| 8 | Marcella Machloda | 2 | Daughter | — | Illinois |
| 9 | Carl Shields | 36 | Head | Clerk | Illinois |
| 10 | Helen Shields | 31 | Wife | — | Germany |
| 11 | Thomas Shields | 4 | Son | — | Illinois |
| 12 | Chester Wenta | 23 | Step-son | Laborer | Illinois |
| 13 | Edwin Wenta | 17 | Step-son | New Worker | Illinois |
| 14 | Casymir Rygielski | 30 | Head | Shipping Clerk | Illinois |
| 15 | Jean Rygielski | 29 | Wife | Packer | Illinois |
| 16 | Walter Kolodske | 27 | Head | Machine Setter | Illinois |
| 17 | Vernicia Kolodske | 26 | Wife | — | Illinois |
| 18 | Thaddeus Kolodske | 4 | Son | — | Illinois |
| 19 | Kathlene Kolodske | 1 | Daughter | — | Illinois |
| 20 | Jeanette Kolodske | 28 | Sister | Shearer | Illinois |
| 21 | John Novak THIS PERSON | 49 | Head | Laborer | Poland |
| 22 | Mary Novak | 50 | Wife | — | Poland |
| 23 | Helen Novak | 15 | Daughter | — | Illinois |
| 24 | Mamie Novak | 14 | Daughter | — | Illinois |
| 25 | Edward Novak | 9 | Son | — | Illinois |
| 26 | Peter Vesper | 52 | Head | Car Inspector | Czech-Slovakia |
| 27 | Elizabeth Vesper | 44 | Wife | — | Czech-Slovakia |
| 28 | Peter Vesper | 18 | Son | — | Wisconsin |
| 29 | Paul Vesper | 17 | Son | — | Wisconsin |
| 30 | Elsie Vesper | 15 | Daughter | — | Wisconsin |
| 31 | George Vesper | 14 | Son | — | Illinois |
| 32 | Marion Vesper | 12 | Daughter | — | Illinois |
| 33 | Walter Hugh | 38 | Head | Car Inspector | Indiana |
| 34 | Ola Hugh | 34 | Wife | — | Indiana |
| 35 | Frank Hauck | 28 | Head | Ink Man | Illinois |
| 36 | Gertrude Hauck | 20 | Wife | — | Illinois |
| 37 | Constance Hauck | 0 | Daughter | — | Illinois |
| 38 | Francis Lukauskas | 54 | Mother | Maid | Lithuania |
| 39 | Edward Hola | 33 | Head | Chauffeur | Illinois |
| 40 | Irene Hola | 26 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
John
Gen 1 · 1 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)