HZ
Harry Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Harry Zimmerman across the 1920, 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 6-person household.
Age 65
b. ~1875
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Zimmerman |
| Given Name | Harry E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Frederick City |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Freight Conductor |
| Industry | Electric Railroad |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 1200 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Freight Conductor |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1875 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Zimmerman | Head | — | 65 | ~1875 |
| Carlotta Kaetzel | Other | — | ~1940 | |
| Nellie Zimmerman | Spouse | — | 54 | ~1886 |
| Nellie Kaetzel | Daughter | — | 19 | ~1921 |
| Blessing Kaetzel | Other | — | 24 | ~1916 |
| Katie Zimmerman | Other | — | 61 | ~1879 |
Census Appearances
1920
Frederick, Maryland
Head, age 45
Frederick, Maryland · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Harry E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Occupation | Conductor |
| Industry | Street Car |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Head, age 55
Frederick, Maryland · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Harry W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Occupation | Conductor |
| Industry | Electric Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Head, age 65
Frederick-County, Maryland · implied b. ~1875 — 6 household members
| Surname | Zimmerman |
| Given Name | Harry E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Frederick City |
| 1935 Residence (County) | Frederick |
| Occupation | Freight Conductor |
| Industry | Electric Railroad |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 1200 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Harry 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
Harry Zimmerman
Head · 1940 · age 65 · b. ~1875 · Maryland
★ 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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01548-00484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cornelius S Moberly | 53 | Head | Packer | Maryland |
| 2 | May P Moberly | 51 | Wife | — | Maryland |
| 3 | Addison Moberly | 30 | Son | Book Keeper | Maryland |
| 4 | Mary L Moberly | 23 | Daughter | — | Maryland |
| 5 | P. Elaine Moberly | 17 | Daughter | — | Maryland |
| 6 | William J. E. Null | 37 | Head | Plumber | Maryland |
| 7 | Cora E Null | 43 | Wife | — | Maryland |
| 8 | William G Null | 14 | Son | — | Maryland |
| 9 | Franklin P Goodman | 56 | Head | Mail Carrier City | Maryland |
| 10 | Lillian J Goodman | 51 | Wife | — | Maryland |
| 11 | John Stamos | 49 | Head | Partner Manager | Greece |
| 12 | Florence G Stamos | 32 | Wife | — | Greece |
| 13 | Catherine J Stamos | 8 | Daughter | — | Maryland |
| 14 | Constance J Stamos | 6 | Daughter | — | Maryland |
| 15 | Mary B Thompson | 64 | Head | — | Maryland |
| 16 | Charles E Thompson | 19 | Son | Presser | Maryland |
| 17 | Anna V Thompson | 17 | Daughter | — | Maryland |
| 18 | Howard H Mulle | 33 | Head | Cutter | Maryland |
| 19 | Thelma A Mulle | 30 | Wife | — | West Virginia |
| 20 | Jacqueline Mulle | 6 | Daughter | — | Maryland |
| 21 | Anna M Pelaze | 77 | Head | — | Maryland |
| 22 | Belle M Myers | 75 | Sister | — | Maryland |
| 23 | Grace Z Keyes | 52 | Head | Instructor | Maryland |
| 24 | Dorothy E Keyes | 22 | Daughter | Secretary | Maryland |
| 25 | Ida B Zimmerman | 76 | Mother | — | Maryland |
| 26 | Harry E Zimmerman THIS PERSON | 65 | Head | Freight Conductor | Maryland |
| 27 | Nellie E Zimmerman | 54 | Wife | — | Maryland |
| 28 | Nellie M Kaetzel | 19 | Daughter | — | Maryland |
| 29 | Blessing B Kaetzel | 24 | Son in law | Checker | Maryland |
| 30 | Carlotta E Kaetzel | 0 | Grand daughter | — | Maryland |
| 31 | Katie M Zimmerman | 61 | Sister | — | Maryland |
| 32 | George H Shipley | 64 | Head | Manager | Maryland |
| 33 | Elizabeth M Shipley | 52 | Wife | Sales Lady | Maryland |
| 34 | George E Miller | 51 | Head | Barber | Maryland |
| 35 | O. May Miller | 49 | Wife | — | Maryland |
| 36 | John W Molesworth | 25 | Head | Stenographer | Maryland |
| 37 | Winifred M Molesworth | 21 | Wife | — | Maryland |
| 38 | John W Iv Molesworth | 1 | Son | — | Maryland |
| 39 | Edna L Brownlow | 56 | Mother in law | — | Maryland |
| 40 | Edgar R Brownlow | 15 | Brother in law | — | Dist Columbia |
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)