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John Schroeder — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this John Schroeder across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Elizabeth — first a son (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Schroeder |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Electric Adjuster |
| Industry | Electric Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Electric Adjuster |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1913 |
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 |
|---|---|---|---|---|
| Elizabeth Schroeder | Head | — | 62 | ~1878 |
| Anna Lykins | Other | — | 85 | ~1855 |
| Dalphine Lynch | Other | — | 40 | ~1900 |
| Cecil Brewer | Other | — | 28 | ~1912 |
| John Schroeder | Son | — | 27 | ~1913 |
Census Appearances
1920
St Clair, …
Other, age 7
St Clair, Illinois · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Other, age 17
St Clair, Illinois · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | John |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Son, age 27
St.-Clair-County, Illinois · implied b. ~1913 — 5 household members
| Surname | Schroeder |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Occupation | Electric Adjuster |
| Industry | Electric Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 Schroeder across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Schroeder (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Schroeder
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Schroeder
Son · 1940 · age 27 · b. ~1913 · 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 — 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-t0627-00881-00068)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Burnett Elinas Colt | 38 | Wife | Waitress | Illinois |
| 2 | Darlene Colt | 15 | Daughter | — | Illinois |
| 3 | Martin Mayville | 32 | Head | Core Maker | Kentucky |
| 4 | Lillian Mayville | 25 | Wife | — | Illinois |
| 5 | Raymond Mayville | 10 | Son | — | Indiana |
| 6 | Robert Mayville | 9 | Son | — | Indiana |
| 7 | Gloria Mayville | 7 | Daughter | — | Indiana |
| 8 | Martin Jr. Mayville | 5 | Son | — | Indiana |
| 9 | Dean Mayville | 3 | Daughter | — | Illinois |
| 10 | Elizabeth Schroeder | 62 | Head | Clerk | Illinois |
| 11 | John A. Schroeder THIS PERSON | 27 | Son | Electric Adjuster | Illinois |
| 12 | Anna Lykins | 85 | Mother | — | Illinois |
| 13 | Dalphine Lynch | 40 | Lodger | Laborer | Illinois |
| 14 | Cecil Brewer | 28 | Lodger | Laborer | Illinois |
| 15 | Harry D. Porter | 55 | Head | Laborer | Missouri |
| 16 | Mary E. Schmidt | 40 | Head | Cook | Indiana |
| 17 | Vacant | None | — | — | — |
| 18 | Stanley Kasper | 22 | Head | Laborer | Illinois |
| 19 | Vera Kasper | 18 | Wife | — | Illinois |
| 20 | Fred Baugh | 47 | Head | Engineer | Illinois |
| 21 | Claude Baugh | 46 | Uncle | Fireman | Illinois |
| 22 | Peter A. Marks | 67 | Head | — | Illinois |
| 23 | Laura Marks | 66 | Wife | Janitress | Illinois |
| 24 | Leo Loiseau | 29 | Head | Machine Helper | Illinois |
| 25 | Opal E. Loiseau | 27 | Wife | — | Illinois |
| 26 | Lenora Loiseau | 2 | Daughter | — | Illinois |
| 27 | Russell E. Hallauer | 22 | Head | Filling Station Attendant | Missouri |
| 28 | Martha Hallauer | 17 | Wife | — | Indiana |
| 29 | John Godlewski | 47 | Head | Clerical | Poland |
| 30 | Marie Godlewski | 40 | Wife | Sales Clerk | Poland |
| 31 | John L. Jr. Godlewski | 22 | Son | — | Illinois |
| 32 | Mary Bridger | 45 | Lodger | Laborer | Missouri |
| 33 | Noah Davis | 33 | Head | Laborer | Texas |
| 34 | Virginia Davis | 26 | Wife | — | Illinois |
| 35 | Maxine Davis | 7 | Daughter | — | Illinois |
| 36 | Monroe Jr. Davis | 1 | Son | — | Illinois |
| 37 | Anna G. Eggers | 43 | Head | House Maid | Illinois |
| 38 | George Derdenant | 60 | Head | Laborer | Illinois |
| 39 | Essie Lumley | 63 | Head | — | Missouri |
| 40 | Jefferson Lumley | 25 | Son | Machine Operator | Missouri |
Pedigree Summary
John
Gen 1 · 1 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)