RZ
Robert Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Robert Zimmerman across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Zimmerman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Luxemburg |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Luxemburg |
| Est. Birth Year | ~1928 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Extra Zimmerman | Son | — | — | |
| Marvin Zimmerman | Son | — | 20 | ~1920 |
| Robert Zimmerman | Son | — | 12 | ~1928 |
| Charlotte Zimmerman | Daughter | — | 23 | ~1917 |
| Donald Zimmerman | Son | — | 10 | ~1930 |
| Russell Zimmerman | Son | — | 14 | ~1926 |
| Louisa Zimmerman | Spouse | — | 56 | ~1884 |
| Harry Zimmerman | Head | — | 63 | ~1877 |
| Howard Zimmerman | Son | — | 40 | ~1900 |
Census Appearances
1930
St Louis, …
Son, age 2
St Louis, Missouri · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Robert M. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Son, age 12
St.-Louis-County, Missouri · implied b. ~1928 — 9 household members
| Surname | Zimmerman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Luxemburg |
| 1935 Residence (County) | St. Louis |
| Industry | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Robert Zimmerman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Zimmerman
Son · 1940 · age 12 · b. ~1928 · Missouri
★ You are viewing this record
Sibling
Extra Zimmerman
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marvin Zimmerman
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Zimmerman
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Zimmerman
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Zimmerman
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Zimmerman
Sibling · 1940 · age 40
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 — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02151-00544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pearl Rossey | 32 | Lodger | Bookkeeper | Missouri |
| 42 | Annetta Brown | 10 | Daughter | — | Missouri |
| 43 | Evelyn Brown | 7 | Daughter | — | Missouri |
| 44 | George Clark | 37 | Head | Attendant | Missouri |
| 45 | Malia Clark | 35 | Wife | — | Missouri |
| 46 | Fern Clark | 16 | Daughter | New Worker | Missouri |
| 47 | Arnold Clark | 13 | Son | — | Missouri |
| 48 | Dorgene Clark | 11 | Daughter | — | Missouri |
| 49 | Robert Schnapp | 7 | Son | — | Missouri |
| 50 | Esco Sherman | 60 | Head | Moulder | Missouri |
| 51 | Ida Sherman | 55 | Wife | — | Missouri |
| 52 | Carmella Mignell | 29 | Lodger | Punch Press Operator | Missouri |
| 53 | Andrew Heitman | 52 | Head | Laborer | Missouri |
| 54 | Myrtle Heitman | 46 | Wife | — | Missouri |
| 55 | Melvin Heitman | 20 | Son | New Worker | Missouri |
| 56 | Florence Heitman | 17 | Daughter | Kitchen | Missouri |
| 57 | Glenwood Heitman | 13 | Son | — | Missouri |
| 58 | Viola Heitman | 10 | Daughter | — | Missouri |
| 59 | Elmer Heitman | 5 | Son | — | Missouri |
| 60 | Charles Bradford | 65 | Head | Laborer | New York |
| 61 | Ida Bradford | 64 | Wife | — | Missouri |
| 62 | Ernest Kemp | 30 | Head | Laborer | Missouri |
| 63 | Lillie Kemp | 29 | Wife | — | Missouri |
| 64 | Robert Kemp | 5 | Son | — | Missouri |
| 65 | Janet Kemp | 1 | Daughter | — | Missouri |
| 66 | Mary Hill | 69 | Mother | — | Missouri |
| 67 | Joan Willi | 8 | Daughter | — | Indiana |
| 68 | Walter Roste | 17 | Son | New Worker | Missouri |
| 69 | William Roste | 16 | Son | Saleslady | Missouri |
| 70 | Willie Roste | 14 | Son | — | Missouri |
| 71 | Stanislaus Watzkowski | 53 | Father | — | Missouri |
| 72 | Harry Zimmerman | 63 | Head | Assessor | Ohio |
| 73 | Louisa Zimmerman | 56 | Wife | — | Missouri |
| 74 | Howard Zimmerman | 40 | Son | Chauffeur | Ohio |
| 75 | Charlotte Zimmerman | 23 | Daughter | Stenographer | Missouri |
| 76 | Marvin Zimmerman | 20 | Son | Salesman | Missouri |
| 77 | Russell Zimmerman | 14 | Son | — | Missouri |
| 78 | Robert Zimmerman THIS PERSON | 12 | Son | — | Missouri |
| 79 | Donald Zimmerman | 10 | Son | — | Missouri |
| 80 | Extra Zimmerman | None | Son | — | Missouri |
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)