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John Kaufman — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lancaster, Pennsylvania
Our Model Tree links this John Kaufman across the 1920 and 1930 US Censuses in Lancaster, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1909), then head of a 8-person household.
Age 21
b. ~1909
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lancaster, Pennsylvania |
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Warwick Township |
| Est. Birth Year | ~1909 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Kaufman | Son | — | 22 | ~1908 |
| Thomas Kaufman | Son | — | 25 | ~1905 |
| Martha Kaufman | Spouse | — | 47 | ~1883 |
| Anna Kaufman | Daughter | — | 16 | ~1914 |
| Mary Kaufman | Daughter | — | 18 | ~1912 |
| Charles Kaufman | Son | — | 20 | ~1910 |
| John Kaufman | Son | — | 21 | ~1909 |
| John Kaufman | Head | — | 53 | ~1877 |
Census Appearances
1920
Lancaster, Pennsylvania
Son, age 10
Lancaster, Pennsylvania · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | John A. |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Lancaster, Pennsylvania
Son, age 21
Lancaster, Pennsylvania · implied b. ~1909 — 8 household members
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 John Kaufman across 2 US Census years (1920 and 1930) in Lancaster, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Kaufman
Son · 1930 · age 21 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Anna Kaufman
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kaufman
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kaufman
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Kaufman
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Kaufman
Sibling · 1930 · age 20
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
1930 US Federal Census — Lancaster, Pennsylvania
Open full size
1930 US Federal Census — Lancaster, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2059:0372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Huffman Damer | 40 | Head | Farmer | Pennsylvania |
| 2 | Bertha Damer | 41 | Wife | — | Pennsylvania |
| 3 | Lillian Damer | 20 | Daughter | — | Pennsylvania |
| 4 | Bertha Damer | 17 | Daughter | — | Pennsylvania |
| 5 | Huffman Damer | 15 | Son | — | Pennsylvania |
| 6 | Mary Damer | 13 | Daughter | — | Pennsylvania |
| 7 | Oscar Damer | 11 | Son | — | Pennsylvania |
| 8 | Margaret Damer | 9 | Daughter | — | Pennsylvania |
| 9 | Helen Damer | 8 | Daughter | — | Pennsylvania |
| 10 | Robert Damer | 5 | Son | — | Pennsylvania |
| 11 | Ruth Damer | 3 | Daughter | — | Pennsylvania |
| 12 | John Damer | 1 | Son | — | Pennsylvania |
| 13 | John Kaufman | 53 | Head | Farmer | Pennsylvania |
| 14 | Martha Kaufman | 47 | Wife | — | Pennsylvania |
| 15 | Thomas Kaufman | 25 | Son | — | Pennsylvania |
| 16 | William Kaufman | 22 | Son | Laborer | Pennsylvania |
| 17 | John Kaufman THIS PERSON | 21 | Son | Laborer | Pennsylvania |
| 18 | Charles Kaufman | 20 | Son | Laborer | Pennsylvania |
| 19 | Mary Kaufman | 18 | Daughter | — | Pennsylvania |
| 20 | Anna Kaufman | 16 | Daughter | — | Pennsylvania |
| 21 | Harry Neuman | 27 | Head | Policeman | Pennsylvania |
| 22 | Ida Neuman | 31 | Wife | — | Pennsylvania |
| 23 | Charles Binder | 32 | Boarder | Clerk | Pennsylvania |
| 24 | Mary Binder | 28 | Boarder | — | Pennsylvania |
| 25 | Charles Binder | 3 | Boarder | — | Pennsylvania |
| 26 | Wallace Zook | 59 | Head | Clergyman | Pennsylvania |
| 27 | Alice Zook | 59 | Wife | — | Pennsylvania |
| 28 | Emma Zook | 32 | Daughter | Teacher | Pennsylvania |
| 29 | Alice Zook | 21 | Daughter | Laborer | Pennsylvania |
| 30 | Joseph Zook | 19 | Son | Laborer | Pennsylvania |
| 31 | Kathryn L. Zook | 17 | Daughter | — | Pennsylvania |
| 32 | Elmer Dukeman | 42 | Head | Laborer | Pennsylvania |
| 33 | Edna Dukeman | 35 | Wife | — | Pennsylvania |
| 34 | William Dukeman | 15 | Son | Laborer | Pennsylvania |
| 35 | Florence Dukeman | 14 | Daughter | — | Pennsylvania |
| 36 | Edna Dukeman | 12 | Daughter | — | Pennsylvania |
| 37 | Mary Dukeman | 11 | Daughter | — | Pennsylvania |
| 38 | Elmer Dukeman | 10 | Son | — | Pennsylvania |
| 39 | Raymond Dukeman | 8 | Son | — | Pennsylvania |
| 40 | John Kowalski | 41 | Head | Farmer | Poland |
| 41 | Salina Kowalski | 37 | Wife | — | Poland |
| 42 | Bruno Kowalski | 16 | Son | — | Pennsylvania |
| 43 | Mary Kowalski | 14 | Daughter | — | Pennsylvania |
| 44 | Helen Kowalski | 12 | Daughter | — | Pennsylvania |
| 45 | Alexander Kowalski | 10 | Son | — | Pennsylvania |
| 46 | Joseph Armstrong | 55 | Head | Laborer | Pennsylvania |
| 47 | Ella Armstrong | 40 | Wife | — | Pennsylvania |
| 48 | Benjamin Hasselback | 16 | Stepson | Laborer | Pennsylvania |
| 49 | Martha Hasselback | 12 | Stepdaughter | — | Pennsylvania |
| 50 | William Loellinger | 22 | Head | Laborer | Pennsylvania |
Related Census Records
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)