MN
Mary Novak — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Novak across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Female
Spouse
Born: Poland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same Place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Chicago |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| John Novak | Son | — | 27 | ~1913 |
| Mary Novak | Spouse | — | 49 | ~1891 |
| Joseph Novak | Son | — | 20 | ~1920 |
| James Novak | Son | — | 29 | ~1911 |
| John Novak | Head | — | 51 | ~1889 |
Census Appearances
1920
Cook, Illinois
Spouse, age 26
Cook, Illinois · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1912 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | poland |
1930
Cook, Illinois
Spouse, age 38
Cook, Illinois · implied b. ~1892 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Veteran | No |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Spouse, age 49
Cook-County, Illinois · implied b. ~1891 — 5 household members
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | No 0 |
| 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 Mary 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
Mary Novak
Spouse · 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
39 people indexed on this census page (nara:1940:m-t0627-00945-00678)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Howard Johnston | 52 | Lodger | Bookkeeper | Illinois |
| 42 | Sylvester Moore | 47 | Lodger | Labor | Illinois |
| 43 | Helen Kue | 47 | Lodger | — | Illinois |
| 44 | Martin Baron | 40 | Head | Janitor | Poland |
| 45 | Ben Sulgabasky | 54 | Head | Clerk | Russia |
| 46 | Sarah Sulgabasky | 48 | Wife | — | Russia |
| 47 | Jack Sulgabasky | 21 | Son | — | Illinois |
| 49 | Casimir Huesnider | 25 | Head | Packer | Illinois |
| 50 | Antoinette Huesnider | 28 | Wife | — | Poland |
| 51 | John Huesnider | 22 | Brother | Packer | Illinois |
| 52 | Victor Huesnider | 21 | Lodger | Baker | Illinois |
| 53 | Peter Michalake | 57 | Head | Labor | Russia |
| 54 | Mary Michalake | 51 | Wife | — | Russia |
| 55 | Olga Michalake | 24 | Daughter | Repairing | Illinois |
| 56 | Anna Michalake | 23 | Daughter | Core Maker | Illinois |
| 57 | John Zarnowski|Zarnonski | 48 | Head | Labor | Poland |
| 58 | Teresa Zarnowski|Zarnonski | 45 | Wife | Seamstress | Poland |
| 59 | Angelina Zarnowski|Zarnonski | 23 | Daughter | Assembling | Illinois |
| 60 | Anna Zarnowski|Zarnonski | 21 | Daughter | Assembling | Illinois |
| 61 | Helen Zarnowski|Zarnonski | 14 | Daughter | — | Illinois |
| 62 | Charles Zarnowski|Zarnonski | 11 | Son | — | Illinois |
| 63 | Anna Zydorowicz | 43 | Head | — | Poland |
| 64 | Chester Zydorowicz | 21 | Son | Labor | Illinois |
| 65 | Alice Zydorowicz | 20 | Daughter | Labor | Illinois |
| 66 | Alex Swartz | 45 | Head | Labor | Illinois |
| 67 | Sophie Swartz | 32 | Wife | — | Illinois |
| 68 | Anthony Baglan | 26 | Head | Labor | Illinois |
| 69 | Mildred Baglan | 23 | Wife | Packer | Illinois |
| 70 | Marilyn Baglan | 1 | Daughter | — | Illinois |
| 71 | John Novak | 51 | Head | Labor | Poland |
| 72 | Mary Novak THIS PERSON | 49 | Wife | — | Poland |
| 73 | Joseph Novak | 20 | Son | — | Illinois |
| 74 | John Novak | 27 | Son | Moulder | Illinois |
| 75 | James Novak | 29 | Son | Labor | Illinois |
| 76 | George Stanek | 27 | Head | Labor | Illinois |
| 77 | Catherine Stanek | 28 | Wife | — | Illinois |
| 78 | George Stanek | 4 | Son | — | Illinois |
| 79 | Anna Stanek | 3 | Daughter | — | Illinois |
| 80 | Albert Stanek | 1 | 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)