LS
Louis Schmidt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Louis Schmidt across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Ike & Lizzie — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Schmidt |
| Given Name | Louis |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Summit Village |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Switchman |
| Industry | Steam Railway |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Switchman |
| Township / Ward | Summit Village |
| Est. Birth Year | ~1906 |
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 Louis | Age | Birth yr |
|---|---|---|---|---|
| Ruth Schmidt | Daughter | — | 1 | ~1939 |
| Ronald Schmidt | Son | — | 7 | ~1933 |
| Lola Schmidt | Daughter | — | 6 | ~1934 |
| Francis Schmidt | Spouse | — | 28 | ~1912 |
| Louis Schmidt | Head | — | 34 | ~1906 |
Census Appearances
1920
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Clerk |
| Industry | Dry Goods Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 26
Cook, Illinois · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 19 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Printer |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 34
Cook-County, Illinois · implied b. ~1906 — 5 household members
| Surname | Schmidt |
| Given Name | Louis |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Summit Village |
| 1935 Residence (County) | Cook |
| Occupation | Switchman |
| Industry | Steam Railway |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 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 Louis Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ike Schmidt (~0.92 confidence) and mother Lizzie Schmidt (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ike Schmidt
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Lizzie Schmidt
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Louis Schmidt
Head · 1940 · age 34 · b. ~1906 · 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-t0627-00782-00311)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Lambert | 8 | son | — | Illinois |
| 2 | Edward Barrington | 41 | head | Salesman | Kentucky |
| 3 | Mary Barrington | 39 | wife | — | Illinois |
| 4 | Patrick Barrington | 14 | daughter | — | Illinois |
| 5 | Edward Barrington | 12 | son | — | Illinois |
| 6 | Mary Barrington | 5 | daughter | — | Illinois |
| 7 | John Barrington | 1 | son | — | Illinois |
| 8 | Julia Walsh | 67 | head | — | England |
| 9 | Edmond Meermann | 38 | head | Sales Manager | Illinois |
| 10 | Ethel Meermann | 36 | wife | — | Illinois |
| 11 | Charles Meermann | 8 | son | — | Illinois |
| 12 | Marvin Meermann | 5 | son | — | Illinois |
| 13 | Florence Orange | 52 | mother-in-law | Bench Worker | Illinois |
| 14 | John Mckay | 38 | head | Carpenter | Illinois |
| 15 | Edna Mckay | 33 | wife | — | Illinois |
| 16 | Fred Darmstadt | 62 | head | Carpenter Helper | Illinois |
| 17 | Emma Darmstadt | 57 | wife | — | Illinois |
| 18 | Albert Darmstadt | 31 | son | — | Illinois |
| 19 | John Rubick | 53 | head | Laborer | Yugoslavia |
| 20 | Mary Rubick | 41 | wife | — | Illinois |
| 21 | Fred Brocken | 46 | head | Laborer | Illinois |
| 22 | Lela Brocken | 45 | wife | — | Illinois |
| 23 | George Reckinger | 36 | head | Auto Mechanic | Illinois |
| 24 | Lora Reckinger | 33 | wife | — | Illinois |
| 25 | Addie Reckinger | 15 | daughter | — | Illinois |
| 26 | Louis Schmidt THIS PERSON | 34 | head | Switchman | Illinois |
| 27 | Francis Schmidt | 28 | wife | — | Illinois |
| 28 | Ronald Schmidt | 7 | son | — | Illinois |
| 29 | Lola Schmidt | 6 | daughter | — | Illinois |
| 30 | Ruth Schmidt | 1 | daughter | — | Illinois |
| 31 | Henry Lotas | 51 | head | Chef | Germany |
| 32 | Stanley Metokowski | 42 | lodger | Porter | Poland |
| 33 | William Austin | 73 | lodger | Porter | England |
| 34 | Joseph R. Freund | 60 | head | Proprietor | Czechoslovakia |
| 35 | Allie Freund | 44 | wife | — | Illinois |
| 36 | Paul Kunik | 33 | head | Dentist | Austria |
| 37 | Helen Kunik | 27 | wife | — | Illinois |
| 38 | Otto Conrad | 65 | head | Laborer | Illinois |
| 39 | Emila Conrad | 65 | wife | — | Germany |
| 40 | William C. Kieltyo | 32 | son-in-law | Laborer | Illinois |
Pedigree Summary
Louis
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)