JZ
John Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Campbell-County, South Dakota
Our Model Tree links this John Zimmerman across the 1920, 1930 and 1940 US Censuses in Campbell-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 7-person household.
Age 57
b. ~1883
Male
Head
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Campbell-County, South Dakota |
| Surname | Zimmerman |
| Given Name | John X. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Odessa District |
| 1935 Residence (County) | Campbell |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 32 |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Farmer |
| Township / Ward | Odessa District |
| Est. Birth Year | ~1883 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Zimmerman | Daughter | — | 18 | ~1922 |
| Bertha Jung | Daughter | — | 35 | ~1905 |
| John Zimmerman | Head | — | 57 | ~1883 |
| Willis Jung | Other | — | 13 | ~1927 |
| Rayburn Jung | Other | — | 12 | ~1928 |
| Edward Zimmerman | Son | — | 29 | ~1911 |
| Christina Zimmerman | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Campbell, South …
Head, age 37
Campbell, South Dakota · implied b. ~1883 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Russia |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | Grain Stock |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth Country | Russia |
| Year of Naturalization | 1889 |
| Birthplace (normalized) | russia |
1930
Campbell, South …
Head, age 47
Campbell, South Dakota · implied b. ~1883 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmermann |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1879 |
| Age at First Marriage | 21 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | No |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Campbell-County, South …
Head, age 57
Campbell-County, South Dakota · implied b. ~1883 — 7 household members
| Surname | Zimmerman |
| Given Name | John X. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Odessa District |
| 1935 Residence (County) | Campbell |
| Naturalization Status | First papers filed |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 32 |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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.
Show:
This person
Anchor record
John Zimmerman
Head · 1940 · age 57 · b. ~1883 · South Dakota
★ 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 — Campbell-County, South Dakota
Open full size
1940 US Federal Census — Campbell-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03850-00623)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lorine Zimmerman | 4 | daughter | — | So. Dak. |
| 42 | John R. Kautz | 63 | head | Farmer | Russia |
| 43 | Rosina Kautz | 63 | wife | — | Russia |
| 44 | Esther Kautz | 36 | daughter | — | So. Dak. |
| 45 | William Kautz | 38 | son | Farmer | So. Dak. |
| 46 | Ella Kautz | 30 | daughter-in-law | — | So. Dak. |
| 47 | Clara Kautz | 5 | granddaughter | — | So. Dak. |
| 48 | Dennis Kautz | 3 | grandson | — | So. Dak. |
| 49 | Bernice Kautz | 0 | granddaughter | — | So. Dak. |
| 50 | Calvin B. Ackerman | 48 | head | Farmer | So. Dak. |
| 51 | Katherine Ackerman | 46 | wife | — | So. Dak. |
| 52 | Alvin T. Ackerman | 23 | son | Laborer | So. Dak. |
| 53 | Christina Ackerman | 21 | daughter | — | So. Dak. |
| 54 | Gertrude Ackerman | 18 | daughter | — | So. Dak. |
| 55 | Eugene Ackerman | 17 | son | — | So. Dak. |
| 56 | Rubin Ackerman | 10 | son | — | So. Dak. |
| 57 | Esther Ackerman | 9 | daughter | — | So. Dak. |
| 58 | Katherine Ackerman | 5 | daughter | — | So. Dak. |
| 59 | Edwin Ackerman | 2 | son | — | So. Dak. |
| 60 | John X. Zimmerman THIS PERSON | 57 | head | Farmer | Russia |
| 61 | Christina Zimmerman | 57 | wife | — | Russia |
| 62 | Edward Zimmerman | 29 | son | Laborer | So. Dak. |
| 63 | Ruth Zimmerman | 18 | daughter | — | So. Dak. |
| 64 | Bertha Jung | 35 | daughter | — | So. Dak. |
| 65 | Willis Jung | 13 | grandson | — | So. Dak. |
| 66 | Rayburn Jung | 12 | grandson | — | So. Dak. |
| 67 | John R. Schauer | 53 | head | Farmer | Russia |
| 68 | Christina Schauer | 48 | wife | — | Russia |
| 69 | Theodore Schauer | 30 | son | Laborer | So. Dak. |
| 70 | Lea Schauer | 28 | daughter-in-law | — | So. Dak. |
| 71 | Johnny Schauer | 8 | grandson | — | So. Dak. |
| 72 | Florence Schauer | 4 | granddaughter | — | So. Dak. |
| 73 | William T. Ackerman | 37 | head | Farmer | So. Dak. |
| 74 | Rachel Ackerman | 33 | wife | — | No. Dak. |
| 75 | Lillian Ackerman | 9 | daughter | — | So. Dak. |
| 76 | Leo Ackerman | 6 | son | — | So. Dak. |
| 77 | Wm Kautz | 52 | head | Farmer | So. Dak. |
| 78 | Rosa Kautz | 47 | wife | — | So. Dak. |
| 79 | Berthold Kautz | 28 | son | Cook | So. Dak. |
| 80 | Alvin R. Kautz | 19 | head | Farmer | So. Dak. |
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)