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John Ritter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this John Ritter across the 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | Ritter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Woodstock City |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Occupation | Assistant Clerk |
| Industry | Electric Mfg Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Assistant Clerk |
| Township / Ward | Woodstock City |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Theresa Ritter | Spouse | — | 57 | ~1883 |
| Harry Ritter | Son | — | 26 | ~1914 |
| John Ritter | Head | — | 56 | ~1884 |
| John Ritter | Son | — | 29 | ~1911 |
| William Ritter | Son | — | 18 | ~1922 |
| Elmer Ritter | Son | — | 22 | ~1918 |
Census Appearances
1930
Mchenry, Illinois
Son, age 18
Mchenry, Illinois · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ritter |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mchenry-County, Illinois
Son, age 29
Mchenry-County, Illinois · implied b. ~1911 — 6 household members
| Surname | Ritter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Woodstock City |
| 1935 Residence (County) | McHenry |
| Occupation | Assistant Clerk |
| Industry | Electric Mfg Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 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 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 29 · b. ~1911 · Illinois
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Sibling
Harry Ritter
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Ritter
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Ritter
Sibling · 1940 · age 18
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 — Mchenry-County, Illinois
Open full size
1940 US Federal Census — Mchenry-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00840-00537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Riley | 16 | Son | — | Illinois |
| 2 | Paul C. Gardner | 54 | Head | Inspector | Germany |
| 3 | Julia Gardner | 52 | Wife | — | Illinois |
| 4 | Evelyn Howard | 56 | Sister-in-law | — | Illinois |
| 5 | John Ritter | 56 | Head | Milling Machine | Austria |
| 6 | Theresa Ritter | 57 | Wife | — | Austria |
| 7 | John Ritter THIS PERSON | 29 | Son | Assistant Clerk | Illinois |
| 8 | Harry Ritter | 26 | Son | Core Maker | Illinois |
| 9 | Elmer Ritter | 22 | Son | Assembler | Illinois |
| 10 | William Ritter | 18 | Son | Production Clerk | Illinois |
| 11 | Earl Wilsing | 57 | Head | Janitor | Illinois |
| 12 | Mable Wilsing | 51 | Wife | — | Illinois |
| 13 | Eleanor Wilsing | 21 | Daughter | Office Clerk | Illinois |
| 14 | Robert Wilsing | 20 | Son | — | Illinois |
| 15 | James Riley | 59 | Head | Proprietor | Illinois |
| 16 | Jennie Riley | 52 | Wife | — | Illinois |
| 17 | Laura R. Riley | 27 | Son | Mechanic | Illinois |
| 18 | Edwin A. Riley | 23 | Son | Office Man | Illinois |
| 19 | David Riley | 19 | Son | Mining | Illinois |
| 20 | Irene G. Black | 39 | Head | Punch Press | Illinois |
| 21 | Geraldine Puck | 21 | Roomer | Machine Operator | Michigan |
| 22 | Julius Miles | 70 | Head | — | Illinois |
| 23 | Luella Miles | 38 | Daughter | Typewriter | Illinois |
| 24 | Rose Miles | 37 | Daughter | Inspector | Illinois |
| 25 | Florence Miles | 22 | Daughter | Filing | Illinois |
| 26 | Loretta Jones | 25 | Granddaughter | Cashier | Wisconsin |
| 27 | William Gollmann | 28 | Head | Laborer | Illinois |
| 28 | Florence Gollmann | 30 | Wife | — | Illinois |
| 29 | Darlene Gollmann | 1 | Daughter | — | Illinois |
| 30 | Mary Handel | 71 | Head | — | New York |
| 31 | Backus | 53 | Head | — | Illinois |
| 32 | Lyman Backus | 33 | Son | Electrician | Illinois |
| 33 | Richard Backus | 33 | Son | — | Illinois |
| 34 | Stanley | 42 | Head | Welder | Illinois |
| 35 | Mary Stanley | 42 | Wife | — | Illinois |
| 36 | Major Stanley | 40 | Brother | Laborer | Illinois |
| 37 | — | 41 | Head | Mechanic | Illinois |
| 38 | — | 32 | Wife | — | Wisconsin |
| 39 | — | 2 | Son | — | Illinois |
| 40 | Thomas J. | 48 | Head | Traveling Salesman | Iowa |
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)