HZ
Harry Zimmerman — 1930 US Census Record
Model Tree available1930 United States Federal Census · Frederick, Maryland
Our Model Tree links this Harry Zimmerman across the 1920, 1930 and 1940 US Censuses in Frederick, Maryland (XGBoost, ~Confirmed), with identified parents — first a head (b.~1894), then head of a 3-person household.
Age 36
b. ~1894
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Frederick, Maryland |
| Surname | Zimmerman |
| Given Name | Harry S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Salesman |
| Industry | Tobacco |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Salesman |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1894 |
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 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| James Zimmerman | Son | — | 16 | ~1914 |
| Nellie Zimmerman | Spouse | — | 36 | ~1894 |
| Harry Zimmerman | Head | — | 36 | ~1894 |
Census Appearances
1920
Frederick, Maryland
Head, age 26
Frederick, Maryland · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Occupation | Mail clerk |
| Industry | R. R. |
| 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 36
Frederick, Maryland · implied b. ~1894 — 3 household members
| Surname | Zimmerman |
| Given Name | Harry S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Occupation | Salesman |
| Industry | Tobacco |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Son, age 46
Frederick-County, Maryland · implied b. ~1894 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Harry R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Frederick City |
| 1935 Residence (County) | Frederick |
| Occupation | Asst. Cashier |
| Industry | Banking |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 568 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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. Identified parents: mother Zimmerman (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Zimmerman
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Zimmerman
Head · 1930 · age 36 · b. ~1894 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Frederick, Maryland
Open full size
1930 US Federal Census — Frederick, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus874unit:0127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward R Pearl | 29 | Head | Machinist | Maryland |
| 2 | Edith L Pearl | 37 | Wife | — | Maryland |
| 3 | Stanley L Pearl | 3 | Daughter | — | Pennsylvania |
| 4 | Joyce E Pearl | 17 | Daughter | Saleslady | Maryland |
| 5 | John W Pearl | 15 | Step son | — | Maryland |
| 6 | Richard C Pearl | 13 | Step son | — | Maryland |
| 7 | M. Beverly Pearl | 11 | Daughter | — | Maryland |
| 8 | Hattie P Fahrney | 58 | Head | — | Maryland |
| 9 | Charles L Fahrney | 21 | Son | Agent | Maryland |
| 10 | Charles G Day | 44 | Head | Salesman | Maryland |
| 11 | Kitty L Day | 43 | Wife | Teacher | Maryland |
| 12 | Nancy L Day | 17 | Daughter | — | Maryland |
| 13 | Rosa F Meintzer | 65 | Head | — | Germany |
| 14 | Rosa E Meintzer | 32 | Daughter | Manager | Pennsylvania |
| 15 | Ida Meintzer | 42 | Sister in law | Bookkeeper | Ohio |
| 16 | Joseph L Pyles | 55 | Head | Doctor | Maryland |
| 17 | Charlotte E Pyles | 46 | Wife | — | Maryland |
| 18 | William D Wolfe | 65 | Head | Salesman | Maryland |
| 19 | Annie B Wolfe | 60 | Wife | — | Maryland |
| 20 | Lillie M Wolfe | 28 | Daughter | Secretary | Maryland |
| 21 | Harry S Zimmerman THIS PERSON | 36 | Head | Salesman | Maryland |
| 22 | Nellie J Zimmerman | 36 | Wife | — | Maryland |
| 23 | James F Zimmerman | 16 | Son | — | Maryland |
| 24 | Walter Decker | 52 | Head | Manager | Pennsylvania |
| 25 | Mary H Decker | 44 | Wife | Manager | Rhode Island |
| 26 | Walter Jr Decker | 23 | Son | Reporter | North Carolina |
| 27 | James E Decker | 20 | Son | — | Maryland |
| 28 | John S Decker | 18 | Son | Freight Agent | West Virginia |
| 29 | Charles A Strine | 55 | Head | Manager | Maryland |
| 30 | Amanda Strine | 53 | Wife | — | Maryland |
| 31 | Evana Strine | 33 | Daughter | Saleslady | Maryland |
| 32 | Mary E Strine | 26 | Daughter | Bookkeeper | Maryland |
| 33 | Ada M Strine | 18 | Daughter | Secretary | Maryland |
| 34 | Nick Pappas | 31 | Lodger | Waiter | Greece |
| 35 | Nick Goulis | 29 | Lodger | Waiter | Greece |
| 36 | Harry G Edmonds | 49 | Head | Barber | Maryland |
| 37 | Helen A Edmonds | 46 | Wife | — | Maryland |
| 38 | Margaret L Edmonds | 21 | Daughter | — | Maryland |
| 39 | Louise Edmonds | 18 | Daughter | Bookkeeper | Maryland |
| 40 | Austin E Thomas | 23 | Head | Manager | Maryland |
| 41 | Louise G Thomas | 24 | Wife | — | North Carolina |
| 42 | Robert G Thomas | 3 | Son | — | Maryland |
| 43 | Normand Lofte | 30 | Roomer | Salesman | Canada-English |
| 44 | Charles W Stacey | 32 | Head | Manager | Pennsylvania |
| 45 | Catherine E Stacey | 35 | Wife | — | Pennsylvania |
| 46 | C. Robert Stacey | 6 | Son | — | Pennsylvania |
| 47 | David D Stacey | 3 | Son | — | Pennsylvania |
| 48 | Thomas J Kennedy | 25 | Head | Bookkeeper | Maryland |
| 49 | Estella D Kennedy | 25 | Wife | — | Maryland |
| 50 | Margaret M Kennedy | 7 | Daughter | — | Maryland |
Pedigree Summary
Harry
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)