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William Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dauphin-County, Pennsylvania
Our Model Tree links this William Zimmerman across the 1930 and 1940 US Censuses in Dauphin-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dauphin-County, Pennsylvania |
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wiconisco Twp |
| 1935 Residence (County) | Dauphin |
| Additional Details | |
| Occupation | New worker |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Wiconisco Twp |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Zimmerman | Daughter | — | 17 | ~1923 |
| Doris Zimmerman | Daughter | — | 7 | ~1933 |
| Betty Zimmerman | Daughter | — | 12 | ~1928 |
| Andrew Zimmerman | Head | — | 39 | ~1901 |
| Joseph Zimmerman | Son | — | 19 | ~1921 |
| William Zimmerman | Son | — | 20 | ~1920 |
| Harold Zimmerman | Son | — | 21 | ~1919 |
| Helen Zimmerman | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Dauphin, Pennsylvania
Son, age 10
Dauphin, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Dauphin-County, Pennsylvania
Son, age 20
Dauphin-County, Pennsylvania · implied b. ~1920 — 8 household members
| Surname | Zimmerman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wiconisco Twp |
| 1935 Residence (County) | Dauphin |
| Occupation | New worker |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 William Zimmerman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Zimmerman
Son · 1940 · age 20 · b. ~1920 · Pennsylvania
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Sibling
Joseph Zimmerman
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Zimmerman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Zimmerman
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Zimmerman
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Zimmerman
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dauphin-County, Pennsylvania
Open full size
1940 US Federal Census — Dauphin-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03486-00317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mervin Underkoffler | 42 | head | Laborer | Pennsylvania |
| 2 | Julia Underkoffler | 34 | Wife | House Work | Pennsylvania |
| 3 | Betty Underkoffler | 18 | Daughter | Clerk | Pennsylvania |
| 4 | Marion Underkoffler | 16 | Daughter | — | Pennsylvania |
| 5 | Paul Underkoffler | 12 | Son | — | Pennsylvania |
| 6 | Donald Underkoffler | 8 | Son | — | Pennsylvania |
| 7 | James Underkoffler | 6 | Son | — | Pennsylvania |
| 8 | Janet Underkoffler | 4 | Daughter | — | Pennsylvania |
| 9 | Emily Underkoffler | 2 | Daughter | — | Pennsylvania |
| 10 | Harold Underkoffler | 1 | Son | — | Penn. |
| 11 | Michael Krepich | 64 | head | — | Poland |
| 12 | Mark Krepich | 15 | Son | — | Pennsylvania |
| 13 | Paul Krepich | 31 | head | Laborer | Pennsylvania |
| 14 | Elizabeth Krepich | 28 | Wife | — | Ohio |
| 15 | Michael Krepich | 8 | Son | — | Pennsylvania |
| 16 | Elizabeth Krepich | 6 | Daughter | — | Pennsylvania |
| 17 | Paul Jr. Krepich | 3 | Son | — | Pennsylvania |
| 18 | Mary Zilinski | 20 | Daughter | Facer | Pennsylvania |
| 19 | Anna Zilinski | 19 | Daughter | New Worker | Pennsylvania |
| 20 | John Zilinski | 17 | Step Son | — | Pennsylvania |
| 21 | George Zilinski | 14 | Step Son | — | Pennsylvania |
| 22 | John Orosky | 48 | head | Laborer | Poland |
| 23 | Anna Orosky | 42 | Wife | — | Check Slov. |
| 24 | Mary Orosky | 15 | Daughter | — | Pennsylvania |
| 25 | Annie Orosky | 12 | Daughter | — | Pennsylvania |
| 26 | Michael Orosky | 8 | Son | — | Pennsylvania |
| 27 | John Branchick | 57 | head | Laborer | Austria |
| 28 | Anna Branchick | 49 | Wife | — | Austria |
| 29 | Charles Branchick | 19 | Son | Truck Driver | Pennsylvania |
| 30 | Nick Branchick | 17 | Son | — | Pennsylvania |
| 31 | John Branchick | 10 | Son | — | Pennsylvania |
| 32 | Andrew Zimmerman | 39 | head | Laborer | Pennsylvania |
| 33 | Helen Zimmerman | 37 | Wife | — | Pennsylvania |
| 34 | Harold Zimmerman | 21 | Son | New Worker | Pennsylvania |
| 35 | William Zimmerman THIS PERSON | 20 | Son | New Worker | Pennsylvania |
| 36 | Joseph Zimmerman | 19 | Son | New Worker | Pennsylvania |
| 37 | Helen Zimmerman | 17 | Daughter | — | Pennsylvania |
| 38 | Betty Zimmerman | 12 | Daughter | — | Pennsylvania |
| 39 | Doris Zimmerman | 7 | Daughter | — | Pennsylvania |
| 40 | Mary Kissinger | 61 | head | — | Pennsylvania |
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)