JZ
John Zimmerman — 1920 US Census Record
Linked across censuses1920 United States Federal Census · St Clair, Michigan
Our Model Tree links this John Zimmerman across the 1920, 1930 and 1940 US Censuses in St Clair, Michigan (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 3-person household.
Age 56
b. ~1864
Male
Head
Born: Michigan
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | St Clair, Michigan |
| Surname | Zimmerman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Hardware Merchant |
| Industry | EM |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Hardware Merchant |
| Township / Ward | Marine City |
| Est. Birth Year | ~1864 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Zimmerman | Head | — | 56 | ~1864 |
| Arthur Zimmerman | Son | — | 14 | ~1906 |
| Amelia Zimmerman | Spouse | — | 43 | ~1877 |
Census Appearances
1920
St Clair, …
Head, age 56
St Clair, Michigan · implied b. ~1864 — 3 household members
| Surname | Zimmerman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Hardware Merchant |
| Industry | EM |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
St Clair, …
Head, age 65
St Clair, Michigan · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmermann |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 35 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $5,000 |
| Radio Set | R |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Head, age 75
St.-Clair-County, Michigan · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmermann |
| Given Name | John F. Jr |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Marine City |
| 1935 Residence (County) | St. Clair |
| Occupation | retired Merchant |
| Industry | own business |
| Class of Worker | OA |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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.
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This person
Anchor record
John Zimmerman
Head · 1920 · age 56 · b. ~1864 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — St Clair, Michigan
Open full size
1920 US Federal Census — St Clair, Michigan
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu795unit:0297)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura Price | 11 | Daughter | None | Michigan |
| 52 | Charles Johns | 47 | Head | Marine Engineer | Mass |
| 53 | Margaret Johns | 54 | Wife | None | York State |
| 54 | John Burke | 37 | Nephew | Laborer | Michigan |
| 55 | Stanley Smith | 28 | Head | Laborer | Michigan |
| 56 | Leona Smith | 18 | Wife | None | Canada |
| 57 | William Saph | 37 | Cousin | Laborer | Michigan |
| 58 | Lilian Saph | 40 | Cousin | None | Louisiana |
| 59 | Hayden Woodhull | 31 | Head | Physician | Canada |
| 60 | Maud Woodhull | 28 | Wife | None | Michigan |
| 61 | Alice Woodhull | 2 | Daughter | None | Michigan |
| 62 | Charles Zimmerman | 62 | Head | Contractor | Michigan |
| 63 | Louise Zimmerman | 58 | Wife | None | Michigan |
| 64 | Caroline Schriver | 67 | Sister | None | York State |
| 65 | Thomas De Gurse | 46 | Head | Physician | Canada |
| 66 | Margaret De Gurse | 39 | Wife | None | Michigan |
| 67 | Newell De Gurse | 17 | Son | None | Michigan |
| 68 | John De Gurse | 16 | Son | None | Michigan |
| 69 | Thomas E. De Gurse | 10 | Son | None | Michigan |
| 70 | Guy Taylor | 30 | Head | Master & Pilot | Canada |
| 71 | Florence Taylor | 28 | Wife | None | Michigan |
| 72 | Mary K. Taylor | 1 | Daughter | None | Michigan |
| 73 | Henry France | 53 | Head | Marine Engineer | Germany |
| 74 | Catherine France | 44 | Wife | None | Michigan |
| 75 | Christine Koenig | 38 | Sister-law | Nurse | Michigan |
| 76 | Minnie Drogmiller | 23 | Boarder | Servant | Michigan |
| 77 | Robert Holland | 40 | Head | Book Keeper | Michigan |
| 78 | Leola Holland | 37 | Wife | None | Michigan |
| 79 | William Fritz | 53 | Head | Marine Engineer | Michigan |
| 80 | Elizabeth Fritz | 49 | Wife | None | Michigan |
| 81 | Edward Fritz | 23 | Son | Laborer | Michigan |
| 82 | Mildred Fritz | 19 | Daughter | Sailor | Michigan |
| 83 | Edna Fritz | 17 | Daughter | None | Michigan |
| 84 | William H. Fritz | 11 | Son | None | Michigan |
| 85 | John Zimmerman THIS PERSON | 56 | Head | Hardware Merchant | Michigan |
| 86 | Amelia Zimmerman | 43 | Wife | None | Michigan |
| 87 | Arthur Zimmerman | 14 | Son | None | Michigan |
| 88 | Nelson Hetherington | 48 | Head | Master & Pilot | New Jersey |
| 89 | Iva Hetherington | 39 | Wife | None | Michigan |
| 90 | Mildred Hetherington | 14 | Daughter | None | Michigan |
| 91 | Emily Hetherington | 11 | Daughter | None | Michigan |
| 92 | Robert Hetherington | 9 | Son | None | Michigan |
| 93 | Arnold Hetherington | 7 | Son | None | Michigan |
| 94 | John Miller | 54 | Head | Master On Lakes | Michigan |
| 95 | May R. Miller | 22 | Son | Pilot On Lakes | Michigan |
| 96 | Frank H. Miller | 18 | Son | Sailor Lakes | Michigan |
| 97 | Frank Fairfield | 64 | Head | Merchant | New York |
| 98 | Jessie Fairfield | 60 | Wife | None | Michigan |
| 99 | Helen Fairfield | 27 | Daughter | None | Michigan |
| 100 | Herbert Fairfield | 20 | Son | Sailor On Lakes | Michigan |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)