MZ
Mary Zimmerman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lancaster-County, Pennsylvania
Our Model Tree links this Mary Zimmerman across the 1930 and 1940 US Censuses in Lancaster-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lancaster-County, Pennsylvania |
| Surname | Zimmerman |
| Given Name | Mary A |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Earl Township |
| 1935 Residence (County) | Lancaster |
| Additional Details | |
| Occupation | housework |
| Industry | private home |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 100 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Housework |
| Township / Ward | Earl Township |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Esther Zimmerman | Daughter | — | 15 | ~1925 |
| Alice Zimmerman | Daughter | — | 21 | ~1919 |
| Mary Zimmerman | Daughter | — | 18 | ~1922 |
| Geo Zimmerman | Head | — | 46 | ~1894 |
| John Zimmerman | Son | — | 19 | ~1921 |
| Titus Zimmerman | Son | — | 6 | ~1934 |
| Amos Zimmerman | Son | — | 11 | ~1929 |
| Abraham Zimmerman | Son | — | 7 | ~1933 |
| George Zimmerman | Son | — | 9 | ~1931 |
| Paul Zimmerman | Son | — | 16 | ~1924 |
| Mary Zimmerman | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Lancaster, Pennsylvania
Daughter, age 7
Lancaster, Pennsylvania · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| 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
Lancaster-County, Pennsylvania
Daughter, age 18
Lancaster-County, Pennsylvania · implied b. ~1922 — 11 household members
| Surname | Zimmerman |
| Given Name | Mary A |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Earl Township |
| 1935 Residence (County) | Lancaster |
| Occupation | housework |
| Industry | private home |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 100 |
| Highest Grade | 8 |
| 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 Mary Zimmerman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Zimmerman
Daughter · 1940 · age 18 · b. ~1922 · Pennsylvania
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Sibling
Paul Zimmerman
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Titus Zimmerman
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Abraham Zimmerman
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Zimmerman
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Zimmerman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Zimmerman
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Amos Zimmerman
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Zimmerman
Sibling · 1940 · age 9
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 — Lancaster-County, Pennsylvania
Open full size
1940 US Federal Census — Lancaster-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03529-00054)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary F Huyard | 16 | daughter | Housework At Home | Pennsylvania |
| 42 | Katie B Huyard | 15 | daughter | Housework At Home | Pennsylvania |
| 43 | Isaac F Huyard | 13 | son | — | Pennsylvania |
| 44 | Elam F Huyard | 12 | son | — | Pennsylvania |
| 45 | Sarah F Huyard | 9 | daughter | — | Pennsylvania |
| 46 | Naomi F Huyard | 7 | daughter | — | Pennsylvania |
| 47 | Levi F Huyard | 5 | son | — | Pennsylvania |
| 48 | David B Brant | 53 | hired help | Laborer | Pennsylvania |
| 49 | Geo M Zimmerman | 46 | Head | Farmer | Pennsylvania |
| 50 | Mary S Zimmerman | 45 | wife | — | Pennsylvania |
| 51 | Alice R Zimmerman | 21 | daughter | Housework At Home | Pennsylvania |
| 52 | John M Zimmerman | 19 | son | Farm Hand | Pennsylvania |
| 53 | Mary A Zimmerman THIS PERSON | 18 | daughter | Housework | Pennsylvania |
| 54 | Paul M Zimmerman | 16 | son | Farm Hand | Pennsylvania |
| 55 | Esther M Zimmerman | 15 | daughter | Housework At Home | Pennsylvania |
| 56 | Amos M Zimmerman | 11 | son | — | Pennsylvania |
| 57 | George M Zimmerman | 9 | son | — | Pennsylvania |
| 58 | Abraham M Zimmerman | 7 | son | — | Pennsylvania |
| 59 | Titus M Zimmerman | 6 | son | — | Pennsylvania |
| 60 | John M Zimmerman | 65 | Head | Retired Farmer | Pennsylvania |
| 61 | Lucetta M Zimmerman | 61 | wife | — | Pennsylvania |
| 62 | Paul M Hoover | 27 | Head | Farmer | Pennsylvania |
| 63 | Emma N Hoover | 28 | wife | — | Pennsylvania |
| 64 | Allen H Hoover | 3 | son | — | Pennsylvania |
| 65 | Isaac N Hoover | 1 | son | — | Pennsylvania |
| 66 | Lydia W Nolt | 19 | hired help | Housework | Pennsylvania |
| 67 | Eli Hoover | 68 | Head | Retired Farmer | Pennsylvania |
| 68 | Ella Hoover | 62 | wife | — | Pennsylvania |
| 69 | Abraham C Martin | 33 | Head | Farmer | Pennsylvania |
| 70 | Agnes N Martin | 33 | wife | — | Pennsylvania |
| 71 | Paul H Martin | 10 | son | — | Pennsylvania |
| 72 | Benjamin H Martin | 8 | son | — | Pennsylvania |
| 73 | Abraham H Martin | 7 | son | — | Pennsylvania |
| 74 | Walter C Martin | 6 | son | — | Pennsylvania |
| 75 | Hiram H Martin | 4 | son | — | Pennsylvania |
| 76 | Jesse H Martin | 1 | son | — | Pennsylvania |
| 77 | Ella B Hoover | 10 | niece | — | Pennsylvania |
| 78 | Elva Hoover | None | niece | — | Pennsylvania |
| 79 | Benj. F Hoover | 66 | Head | Retired Farmer | Pennsylvania |
| 80 | Annie C Hoover | 66 | wife | — | Pennsylvania |
Related Census Records
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)