JN
John Novak — 1940 US Census Record
Linked across censuses1940 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) — first a head (b.~1884), then head of a 2-person household.
Age 56
b. ~1884
Male
Head
Born: Poland
Widowed
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 | 56 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Laborer |
| Industry | Tractor Mfg |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 885 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Laborer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1884 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marie Novak | Daughter | — | 25 | ~1915 |
| John Novak | Head | — | 56 | ~1884 |
Census Appearances
1920
Cook, Illinois
Head, age 36
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1905 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Bed Spring Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | No |
| Mother Tongue | Polish |
| Home Owned/Rented | R |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1930
Cook, Illinois
Head, age 46
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Iron Foundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 56
Cook-County, Illinois · implied b. ~1884 — 2 household members
| Surname | Novak |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | Tractor Mfg |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 885 |
| Highest Grade | No 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.
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This person
Anchor record
John Novak
Head · 1940 · age 56 · b. ~1884 · 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-t0627-00966-00489)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ferdinand Blecha | 25 | Son | Laborer | Illinois |
| 42 | Joseph Racin | 31 | Head | Machinist | Illinois |
| 43 | Frances Racin | 30 | Wife | — | Jugoslavia |
| 44 | Joseph Jr Racin | 4 | Son | — | Illinois |
| 45 | Joseph Dusatko | 47 | Head | Machinist | Illinois |
| 46 | Anna Dusatko | 39 | Wife | — | Bohemia |
| 47 | Mildred Dusatko | 14 | Daughter | — | Illinois |
| 48 | George Dusatko | 12 | Son | — | Illinois |
| 49 | John Novak THIS PERSON | 56 | Head | Laborer | Poland |
| 50 | Marie Novak | 25 | Daughter | Clerk | Illinois |
| 51 | Anthony Fryza | 29 | Head | Cabinet Maker | Illinois |
| 52 | Stella Fryza | 24 | Wife | Packer | Illinois |
| 53 | Richard Hoving | 36 | Head | Radio Service | Illinois |
| 54 | Victoria Hoving | 32 | Wife | — | Illinois |
| 55 | Homer Hoving | 9 | Son | — | Illinois |
| 56 | Catherine Bis | 55 | Mother | Janitor | Czechoslovakia |
| 57 | Edward Steininger | 32 | Head | Carpenter | Nebraska |
| 58 | Mary Steininger | 27 | Wife | — | Illinois |
| 59 | Edward Jr Steininger | 7 | Son | — | Illinois |
| 60 | Camille Steininger | 5 | Daughter | — | Illinois |
| 61 | James Sehwat | 49 | Head | Cabinet Maker | Czechoslovakia |
| 62 | Mary Sehwat | 52 | Wife | — | Czechoslovakia |
| 63 | Joseph Zeman | 61 | Head | Tin Smith | Czechoslovakia |
| 64 | Wilhelmina Zeman | 58 | Wife | — | Czechoslovakia |
| 65 | Walter Kismiawski | 43 | Head | Tailor | Ohio |
| 66 | Stephanie Kismiawski | 40 | Wife | Homework | Czechoslovakia |
| 67 | Walter Kismiawski | 17 | Son | — | Illinois |
| 68 | Joseph Snorek | 31 | Head | Laborer | Illinois |
| 69 | Julia Snorek | 23 | Wife | Operator | Illinois |
| 70 | Anna Penhollow | 59 | Head | — | Sweden |
| 71 | Curtis Penhollow | 19 | Son | Packing | Illinois |
| 72 | Joseph Novacek | 26 | Head | Shipping Clerk | Illinois |
| 73 | Mary Novacek | 26 | Wife | — | Ohio |
| 74 | Audrey Novacek | 3 | Daughter | — | Illinois |
| 75 | Joseph Dvorak | 48 | Head | Truck Driver | Illinois |
| 76 | Julia Dvorak | 42 | Wife | — | Illinois |
| 77 | Raymond Dvorak | 20 | Son | — | Illinois |
| 78 | Elmer Dvorak | 15 | Son | — | Illinois |
| 79 | Betty Hais | 52 | Head | Homework | Czechoslovakia |
| 80 | George Hais | 16 | Son | — | Illinois |
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)