CZ
Charles Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Charles Zimmerman across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 4-person household.
Age 55
b. ~1885
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Zimmerman |
| Given Name | Charles J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Druggist |
| Industry | Retail Drug |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Druggist |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1885 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Lorraine Zimmerman | Daughter | — | 24 | ~1916 |
| Eleanor Zimmerman | Daughter | — | 28 | ~1912 |
| Anna Zimmerman | Spouse | — | 57 | ~1883 |
| Charles Zimmerman | Head | — | 55 | ~1885 |
Census Appearances
1920
Black Hawk, …
Head, age 35
Black Hawk, Iowa · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Charles J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Austria |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Head, age 45
Black Hawk, Iowa · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Germany |
| Occupation | Proprietor |
| Industry | Drug Store |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Head, age 55
Black-Hawk-County, Iowa · implied b. ~1885 — 4 household members
| Surname | Zimmerman |
| Given Name | Charles J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Occupation | Druggist |
| Industry | Retail Drug |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Charles Zimmerman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Charles Zimmerman
Head · 1940 · age 55 · b. ~1885 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01140-00972)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | La Roy Riggs | 36 | Lodger | Clerk | Minnesota |
| 2 | Henry C. Williams | 65 | Lodger | Laborer | Iowa |
| 3 | William S. Wilson | 69 | Lodger | — | Iowa |
| 4 | Robert R. Moore | 30 | Head | Salesman | So. Dakota |
| 5 | Velma M. Moore | 24 | Wife | — | Iowa |
| 6 | Anna H. Miller | 54 | Head | Housekeeper | Germany |
| 7 | Ray Fuller | 49 | Head | Fireman | Iowa |
| 8 | Mary A. Fuller | 48 | Wife | Nurse | Kansas |
| 9 | Dora Fuller | 74 | Mother | — | Iowa |
| 10 | Charles J. Zimmerman THIS PERSON | 55 | Head | Druggist | Iowa |
| 11 | Anna S. Zimmerman | 57 | Wife | — | Iowa |
| 12 | Eleanor M. Zimmerman | 28 | Daughter | Bookkeeper | Iowa |
| 13 | Lorraine F. Zimmerman | 24 | Daughter | Bookkeeper | Iowa |
| 14 | Theresa M. Hubert | 53 | Head | — | Austria (Germ) |
| 15 | Gus M. Hubert | 23 | Son | Clerical | Iowa |
| 16 | Pauline A. Hubert | 21 | Daughter | — | Iowa |
| 17 | Marie M. Hubert | 18 | Daughter | — | Iowa |
| 18 | Elizabeth M. O'Connor | 73 | Head | — | Wisconsin |
| 19 | Mary E. O'Connor | 48 | Daughter | Saleslady | Iowa |
| 20 | Cora Karlsbroten | 48 | Lodger | Seamstress | Iowa |
| 21 | Gottlieb Schaffer | 39 | Head | Eating House | So. Dakota |
| 22 | Christine O. Schaffer | 27 | Wife | Hook Maker | No. Dakota |
| 23 | Clarence R. Schaffer | 3 | Son | — | No. Dakota |
| 24 | Irene A. Schaffer | 2 | Daughter | — | No. Dakota |
| 25 | Claus C. Hirschmann | 24 | Head | Plant Worker | Iowa |
| 26 | Marguerite M. Hirschmann | 19 | Wife | — | Iowa |
| 27 | William W. Hirschmann | 2 | Son | — | Iowa |
| 28 | Ronald R. Hirschmann | 1 | Son | — | Iowa |
| 29 | Clarence E. Elverum | 29 | Head | Heat Treater | Iowa |
| 30 | Bessie T. Elverum | 33 | Wife | — | Iowa |
| 31 | Carroll N. Elverum | 8 | Son | — | Iowa |
| 32 | Murray A. Elverum | 6 | Son | — | Iowa |
| 33 | Le Roy C. Elverum | 2 | Son | — | Iowa |
| 34 | Arthur R. Walters | 42 | Head | Mechanic | Iowa |
| 35 | Iora R. Walters | 33 | Wife | — | Iowa |
| 36 | Floyd L. Buckner | 21 | Head | Assemblyman | Iowa |
| 37 | Norma N. Buckner | 18 | Wife | Demonstrator | Iowa |
| 38 | Charles L. Lewis | 55 | Head | Foreman | Iowa |
| 39 | Frances M. Lewis | 54 | Wife | — | Iowa |
| 40 | Roger W. Fisner | 21 | Nephew | Apprentice | Iowa |
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)