JZ
John Zimmerman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this John Zimmerman across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Zimmerman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Mack |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Laborer |
| Industry | Wholesale Bakery |
| Class of Worker | PW |
| Income (1939) | 320 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Mack |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Zimmerman | Head | — | 47 | ~1893 |
| Joseph Swedersky | Other | — | 69 | ~1871 |
| John Zimmerman | Son | — | 23 | ~1917 |
| Catherine Zimmerman | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Hamilton, Ohio
Son, age 2
Hamilton, Ohio · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Son, age 13
Hamilton, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Son, age 23
Hamilton-County, Ohio · implied b. ~1917 — 4 household members
| Surname | Zimmerman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Mack |
| 1935 Residence (County) | Hamilton |
| Occupation | Laborer |
| Industry | Wholesale Bakery |
| Class of Worker | PW |
| Income (1939) | 320 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Zimmerman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Zimmerman (~0.92 confidence) and father John Zimmerman (~0.92 confidence) and mother Catherine Zimmerman (~0.92 confidence) and father John Zimmerman (~0.92 confidence) and mother Katherine Zimmerman (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Zimmerman
b. ~1893
Source father
● Household
· direct · ~0.92
Father
John Zimmerman
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Catherine Zimmerman
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
John Zimmerman
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Katherine Zimmerman
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Zimmerman
Son · 1940 · age 23 · b. ~1917 · Ohio
★ 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 — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
34 people indexed on this census page (nara:1940:m-t0627-03077-00438)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dolly Focke | 37 | Wife | — | Kentucky |
| 2 | August Focke | 67 | Father | — | Kentucky |
| 3 | Lester Wilson | 29 | Head | Manager/Grocery | Kentucky |
| 4 | Martha Wilson | 29 | Wife | — | Indiana |
| 5 | Donald Wilson | 6 | Son | — | Kentucky |
| 7 | Carl R. Rudolf | 35 | Head | Truck Driver | Ohio |
| 8 | Betty Rudolf | 30 | Wife | — | Ohio |
| 9 | Betty J. Rudolf | 6 | Daughter | — | Ohio |
| 10 | Katherine R. Rudolf | 2 | Daughter | — | Ohio |
| 11 | Leo P. Wendling | 42 | Head | Shipping Clerk | Ohio |
| 12 | Clara Wendling | 43 | Wife | — | Ohio |
| 13 | Roy O. Wendling | 20 | Son | Clerk Office | Ohio |
| 14 | Nancy Wendling | 5 | Daughter | — | Ohio |
| 15 | Phillip Wendling | 82 | Father | — | France |
| 16 | George C. Walksmith | 37 | Head | Upholsterer | Ohio |
| 17 | Fred H. Hoffman | 53 | Head | Appraiser | Ohio |
| 18 | Julia L. Hoffman | 52 | Wife | — | Ohio |
| 19 | Melva L. Hoffman | 27 | Daughter | Bookkeeper | Ohio |
| 20 | Robert J. Brisbin | 37 | Head | Radial Hand | Ohio |
| 21 | Anna E. Brisbin | 36 | Wife | — | Ohio |
| 22 | Grace L. Brisbin | 15 | Daughter | — | Ohio |
| 23 | Anna L. Brisbin | 13 | Daughter | — | Ohio |
| 24 | Gayle E. Brisbin | 10 | Son | — | Ohio |
| 30 | John Sr. Zimmerman | 47 | Head | Superintendent | Ohio |
| 31 | Catherine Zimmerman | 46 | Wife | — | Ohio |
| 32 | John Jr. Zimmerman THIS PERSON | 23 | Son | Laborer | Ohio |
| 33 | Joseph Swedersky | 69 | Father-in-law | — | Ohio |
| 34 | Anna Ellmann | 60 | Head | — | Ohio |
| 35 | Florence Ellmann | 34 | Wife | Seamstress | Ohio |
| 36 | Lillian Ellmann | 33 | Daughter | Seamstress | Ohio |
| 37 | George J. Ellmann | 28 | Son | Electrician | Ohio |
| 38 | Hazel E. Merrill | 34 | Lodger | Seamstress | Ohio |
| 39 | Edward A. Anson | 31 | Head | Stock Tracer | Ohio |
| 40 | Edna M. Anson | 30 | Wife | — | Ohio |
Pedigree Summary
John
Gen 1 · 5 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)