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John Ritter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Ritter across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 10-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Ritter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Clerk Register |
| Industry | Clerk Mfg Co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 391 |
| Highest Grade | H 2 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk Register |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Henry Schneider | Son | — | 20 | ~1920 |
| John Ritter | Son | — | 23 | ~1917 |
| Helen Ritter | Other | — | 64 | ~1876 |
| Catherine Schneider | Spouse | — | 25 | ~1915 |
| Christian Schneider | Head | — | 25 | ~1915 |
| Christine Schneider | Daughter | — | 1 | ~1939 |
| Sophie Schneider | Daughter | — | 27 | ~1913 |
| Henry Kempe | Other | — | 64 | ~1876 |
| Julia Weicand | Daughter | — | 9 | ~1931 |
| Christian Schneider | Son | — | 4 | ~1936 |
Census Appearances
1930
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ritter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 23
Cook-County, Illinois · implied b. ~1917 — 10 household members
| Surname | Ritter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Clerk Register |
| Industry | Clerk Mfg Co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 391 |
| Highest Grade | H 2 |
| 1935 Residence | Illinois |
| 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 Ritter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Ritter
Son · 1940 · age 23 · b. ~1917 · Illinois
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Sibling
Sophie Schneider
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Weicand
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christian Schneider
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christine Schneider
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Schneider
Sibling · 1940 · age 20
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-t0627-01000-00317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sophie Felde | 17 | Daughter | Apprentice | Illinois |
| 42 | John Felde | 14 | Son | — | Illinois |
| 43 | Charles Felde | 13 | Son | — | Illinois |
| 44 | Peter Dahmer | 53 | Head | Laborer Park | Russia |
| 45 | Sophie Dahmer | 51 | Wife | — | Russia |
| 46 | Mary Dahmer | 23 | Daughter | Mimeographer | Illinois |
| 47 | Henry N Dahmer | 21 | Son | Plating Helper | Illinois |
| 48 | William Dahmer | 19 | Son | Freight Checker | Illinois |
| 49 | Martin Drobina | 58 | Head | Cabinet Maker | Czechoslovakia |
| 50 | Anna Drobina | 56 | Wife | — | Czecho Slovakia |
| 51 | Martino Drobina | 25 | Son | Gardener | Illinois |
| 52 | Sam Drobina | 20 | Son | Feeder Etc | Illinois |
| 53 | Robert Zetterberg | 39 | Head | Stock Clerk | Illinois |
| 54 | Bernice Zetterberg | 35 | Wife | — | Illinois |
| 55 | Duane Zetterberg | 15 | Son | — | Illinois |
| 56 | Nancy Zetterberg | 6 | Daughter | — | Illinois |
| 57 | Roberta Zetterberg | 1 | Daughter | 0 | Illinois |
| 58 | Christian Schneider | 25 | Head | Repair Man | Illinois |
| 59 | Catherine Schneider | 25 | Wife | Nursemaid | Illinois |
| 60 | Christian Schneider | 4 | Son | 0 | Illinois |
| 61 | Christine Schneider | 1 | Daughter | 0 | Illinois |
| 62 | Sophie Schneider | 27 | Daughter | Assembler | Illinois |
| 63 | Henry Schneider | 20 | Son | Bus Boy | Illinois |
| 64 | Henry Kempe | 64 | Uncle | Street Laborer | Russia |
| 65 | Helen Ritter | 64 | Mother | — | Russia |
| 66 | John Ritter THIS PERSON | 23 | Son | Clerk Register | Illinois |
| 67 | Julia Weicand | 9 | Daughter | — | Illinois |
| 68 | Alexander Ritter | 27 | Head | Clerk Keeper | Illinois |
| 69 | Marie Ritter | 24 | Wife | — | Wisconsin |
| 70 | Roland Ritter | 2 | Son | 0 | Illinois |
| 71 | Conrad Groh | 73 | Head | — | Russia |
| 72 | Anna Groh | 32 | Daughter | Order Clerk | Russia |
| 73 | Emily Groh | 26 | Daughter | Inspector | Illinois |
| 74 | Anna Hardt | 67 | Boarder | — | Russia |
| 75 | Stephen Dombrowski | 43 | Head | Street Laborer | Poland |
| 76 | Josephine Dombrowski | 42 | Wife | — | Poland |
| 77 | Daniel Dombrowski | 16 | Son | — | Illinois |
| 78 | Harold Dombrowski | 14 | Son | — | Illinois |
| 79 | Gilbert Dombrowski | 13 | Son | — | Illinois |
| 80 | Rita Dombrowski | 7 | Daughter | — | Illinois |
Related Census Records
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)