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John Stark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Stark across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Stark |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Gladys Stark | Spouse | — | 32 | ~1908 |
| John Stark | Son | — | 13 | ~1927 |
| James Stark | Son | — | 9 | ~1931 |
| Donald Stark | Son | — | 4 | ~1936 |
| Theodore Stark | Son | — | 6 | ~1934 |
| Jack Stark | Head | — | 38 | ~1902 |
| Bonita Stark | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Starke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 13
Cook-County, Illinois · implied b. ~1927 — 7 household members
| Surname | Stark |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 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 John Stark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Stark
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Bonita Stark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Stark
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Stark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Stark
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00942-00145)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Benedict John Benedict | 9 | Son | — | Illinois |
| 42 | Jacqueline Benedict | 6 | Daughter | — | Illinois |
| 43 | Anna Dragovitch | 68 | Head | — | Yugoslavia |
| 44 | Michael Dragovitch | 28 | Son | Laborer | Illinois |
| 45 | George Novak | 35 | Head | Laborer | Yugoslavia |
| 46 | Anna Novak | 33 | Wife | — | Illinois |
| 47 | Ernie Novak | 11 | Son | — | Illinois |
| 48 | James Novak | 9 | Son | — | Illinois |
| 49 | Lorraine Novak | 5 | Daughter | — | Illinois |
| 50 | Charles Novak | 2 | Son | — | Illinois |
| 51 | James Shea | 30 | Head | Hooker | Wisconsin |
| 52 | Vivian Shea | 22 | Wife | — | Illinois |
| 53 | Vivian Shea | 6 | Daughter | — | Illinois |
| 54 | James Shea | 4 | Son | — | Illinois |
| 55 | Dorothy Farrell | 27 | Sister | — | Wisconsin |
| 56 | James Farrell | 8 | Niece | — | Illinois |
| 57 | James Farrell | 6 | Nephew | — | Illinois |
| 58 | Patrick Farrell | 5 | Nephew | — | Illinois |
| 59 | Richard Farrell | 3 | Nephew | — | Illinois |
| 60 | Lance Lee Farrell | 1 | Niece | — | Illinois |
| 61 | Jack Stark | 38 | Head | Truck Driver | Sweden |
| 62 | Gladys Stark | 32 | Wife | — | Illinois |
| 63 | John Stark THIS PERSON | 13 | Son | — | Illinois |
| 64 | Bonita Stark | 11 | Daughter | — | Illinois |
| 65 | James Stark | 9 | Son | — | Illinois |
| 66 | Theodore Stark | 6 | Son | — | Illinois |
| 67 | Donald Stark | 4 | Son | — | Illinois |
| 68 | Sante H. Stone | 35 | Head | Assistant Shop Foreman | Germany |
| 69 | Virginia Stone | 25 | Wife | — | W. Virginia |
| 70 | Marlene Stone | 3 | Daughter | — | Illinois |
| 71 | Dolores Stone | 1 | Daughter | — | Illinois |
| 72 | Stojan Paun | 53 | Head | Laborer Blast Furnace | Yugoslavia |
| 73 | Rose Paun | 52 | Wife | — | Yugoslavia |
| 74 | Anthony Paun | 24 | Son | Laborer | Minnesota |
| 75 | Joseph Paun | 23 | Son | Fireman | Minnesota |
| 76 | Ernie Paun | 22 | Son | Laborer | Minnesota |
| 77 | Mary Paun | 16 | Daughter | — | Minnesota |
| 78 | Joan Paun | 13 | Daughter | — | Minnesota |
| 79 | John Jurcic | 49 | Head | Laborer Blast Furnace | Yugoslavia |
| 80 | Bessie Jurcic | 64 | Wife | — | Wisconsin |
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)