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John Lang — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Lang across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 9-person household.
Age 45
b. ~1895
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lang |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Foreman |
| Industry | W.P.A. Paving Const. |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 500 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Foreman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1895 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Pearl Lang | Daughter | — | 11 | ~1929 |
| Irene Lang | Daughter | — | 8 | ~1932 |
| Doris Lang | Daughter | — | 10 | ~1930 |
| Lorraine Lang | Daughter | — | 5 | ~1935 |
| John Lang | Head | — | 45 | ~1895 |
| John Lang | Son | — | 13 | ~1927 |
| Robert Lang | Son | — | 18 | ~1922 |
| George Lang | Son | — | 20 | ~1920 |
| Rose Lang | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Cook, Illinois
Head, age 35
Cook, Illinois · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lange |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Clerk |
| Industry | Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 75.00 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 45
Cook-County, Illinois · implied b. ~1895 — 9 household members
| Surname | Lang |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Foreman |
| Industry | W.P.A. Paving Const. |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 500 |
| Highest Grade | 6 |
| 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 Lang across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lang
Head · 1940 · age 45 · b. ~1895 · 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 — 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-t0627-00945-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Irma Krumler | 8 | daughter | — | Illinois |
| 42 | Robert Krumler | 5 | son | — | Illinois |
| 43 | Martha Krumler | 4 | daughter | — | Illinois |
| 44 | Alex Pala | 23 | head | Molder | Illinois |
| 45 | Rose Pala | 24 | wife | H | Illinois |
| 46 | Harry Pala | 1 | daughter | — | Illinois |
| 47 | Paul Burzawa | 72 | father | U | Poland |
| 48 | Stanley Sotlik | 31 | head | Upholsterer | Illinois |
| 49 | Helen Sotlik | 24 | wife | H | Illinois |
| 50 | Ronald Sotlik | 3 | son | — | Illinois |
| 51 | John Sotlik | 56 | head | U | Poland |
| 52 | Pauline Sotlik | 55 | wife | H | Poland |
| 53 | Lucille Sotlik | 32 | daughter | Floor-Lady | Illinois |
| 54 | Stephanie Sotlik | 28 | daughter | Stenographer | Illinois |
| 55 | Charles Sotlik | 24 | son | Apprentice-Upholsterer | Illinois |
| 56 | Helen Sotlik | 18 | daughter | S | Illinois |
| 57 | Victoria Fatla | 55 | head | H | Poland |
| 58 | Frank Gierut | 33 | son-in-law | Clerk | Pennsylvania |
| 59 | Katherine Gierut | 31 | wife | Packer | Illinois |
| 60 | Dolores Gierut | 2 | daughter | — | Illinois |
| 61 | Frank Fatla | 20 | son | S | Illinois |
| 62 | Stanley Jackin | 29 | head | Die Maker | Illinois |
| 63 | Josephine Jackin | 29 | wife | H | Illinois |
| 64 | Robert Jackin | 1 | son | — | Illinois |
| 65 | Charles Larson | 56 | head | Steel-Labor | Illinois |
| 66 | Elsie Larson | 53 | wife | H | Illinois |
| 67 | John Lang THIS PERSON | 45 | head | Foreman | Illinois |
| 68 | Rose Lang | 44 | wife | H | Illinois |
| 69 | George Lang | 20 | son | Punch-Press | Illinois |
| 70 | Robert Lang | 18 | son | Truck-Dr. Helper | Illinois |
| 71 | John Lang | 13 | son | — | Illinois |
| 72 | Pearl Lang | 11 | daughter | — | Illinois |
| 73 | Doris Lang | 10 | daughter | — | Illinois |
| 74 | Irene Lang | 8 | daughter | — | Illinois |
| 75 | Lorraine Lang | 5 | daughter | — | Illinois |
| 76 | John Studmary | 28 | head | Mill-Wright | Illinois |
| 77 | Adeline Studmary | 25 | wife | H | Illinois |
| 78 | Kenneth Studmary | 5 | son | — | Illinois |
| 79 | Gregory Mondry | 44 | head | Laborer | Illinois |
| 80 | Lottie Mondry | 41 | wife | H | 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)