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John Simon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this John Simon across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 5-person household.
Age 58
b. ~1882
Male
Head
Born: Hungary
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Simon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Fairmont City |
| 1935 Residence (County) | St. Clair |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Labor |
| Industry | American Zinc |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
| Occupation | Labor |
| Township / Ward | Fairmont City |
| Est. Birth Year | ~1882 |
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 |
|---|---|---|---|---|
| John Simon | Head | — | 58 | ~1882 |
| Charles Simon | Son | — | 35 | ~1905 |
| Elizabeth Simon | Daughter | — | 18 | ~1922 |
| Mary Simon | Spouse | — | 52 | ~1888 |
| John Simon | Son | — | 12 | ~1928 |
Census Appearances
1920
St Clair, …
Head, age 38
St Clair, Illinois · implied b. ~1882 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Hungary |
| Year of Immigration | 1910 |
| Naturalization Status | Alien |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | Laborer |
| Industry | R R |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Hungarian |
| Home Owned/Rented | R |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1930
St Clair, …
Head, age 48
St Clair, Illinois · implied b. ~1882 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Hungary |
| Naturalization Status | First papers filed |
| Year of Immigration | 1908 |
| Age at First Marriage | 23 |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | Laborer |
| Industry | Zinc Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Magyar |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1940
St.-Clair-County, Illinois
Head, age 58
St.-Clair-County, Illinois · implied b. ~1882 — 5 household members
| Surname | Simon |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Fairmont City |
| 1935 Residence (County) | St. Clair |
| Naturalization Status | First papers filed |
| Occupation | Labor |
| Industry | American Zinc |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
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 Simon 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 Simon
Head · 1940 · age 58 · b. ~1882 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00878-00843)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Millie Daniel | 67 | Head | — | Poland |
| 42 | John Hytla | 49 | Son-in-law | Watchman | Poland |
| 43 | Mary Hytla | 43 | Daughter | — | Kansas |
| 44 | Charles Hytla | 24 | Grandson | Furnace Man | Oklahoma |
| 45 | Frank Hytla | 19 | Grandson | New Worker | Kansas |
| 46 | Carl Hytla | 17 | Grandson | New Worker | Kansas |
| 47 | Nellie Hytla | 13 | Daughter | New Worker | Illinois |
| 48 | Anna Hytla | 11 | Daughter | — | Illinois |
| 49 | Mike Oravacy | 34 | Head | — | Pennsylvania |
| 50 | Ben Bensorski | 56 | Head | Labor | Poland |
| 51 | Katherine Mieszczak | 64 | Wife | — | Poland |
| 52 | Joseph Jablonski | 61 | Brother | Furnace | Poland |
| 53 | Tony Koblinski | 50 | Lodger | Furnace | Poland |
| 54 | Thelma Savala | 45 | Head | — | Mexico |
| 55 | Salvador Savala | 21 | Son | New Worker | Illinois |
| 56 | Robert Savala | 13 | Son | — | Illinois |
| 57 | Florencio Muniz | 47 | Head | Labor | Spain |
| 58 | Mary Muniz | 41 | Wife | — | Spain |
| 59 | James Muniz | 21 | Son | Labor | Illinois |
| 60 | Cladio Muniz | 19 | Son | Clerk | Illinois |
| 61 | Henry Muniz | 17 | Son | — | Illinois |
| 62 | Stella Muniz | 13 | Daughter | — | Illinois |
| 63 | Adela Muniz | 10 | Daughter | — | Illinois |
| 64 | Dorothy Muniz | 9 | Daughter | — | Illinois |
| 65 | Raymond Muniz | 4 | Son | — | Illinois |
| 66 | Albert Muniz | 2 | Son | — | Illinois |
| 67 | John Simon THIS PERSON | 58 | Head | Labor | Hungary |
| 68 | Mary Simon | 52 | Wife | — | Hungary |
| 69 | Charles Simon | 35 | Son | Labor | Illinois |
| 70 | Elizabeth Simon | 18 | Daughter | — | Illinois |
| 71 | John Simon | 12 | Son | — | Illinois |
| 72 | Anthony Klich | 35 | Head | — | Poland |
| 73 | Frank Klich | 49 | Brother | Owner | Poland |
| 74 | John Klich | 35 | Head | Shift Foreman | Illinois |
| 75 | Martha Klich | 34 | Wife | — | Missouri |
| 76 | Jane Hellen Klich | 2 | Daughter | — | Illinois |
| 77 | Mary Swiatek | 49 | Head | — | Poland |
| 78 | Peter Swiatek | 28 | Son | Switchman | Illinois |
| 79 | Mildred Swiatek | 25 | Daughter-in-law | Elev. Operator | Missouri |
| 80 | Joe Kusior | 15 | Lodger | — | 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)