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Joseph Kowalski — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Passaic, New Jersey
Our Model Tree links this Joseph Kowalski across the 1920 and 1930 US Censuses in Passaic, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 9-person household.
Age 18
b. ~1912
Male
Son
Born: New Jersey
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Passaic, New Jersey |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Rubber Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Laborer |
| Township / Ward | Passaic City |
| Est. Birth Year | ~1912 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Kowalski | Son | — | 18 | ~1912 |
| Joseph Kowalski | Head | — | 40 | ~1890 |
| William Kowalski | Son | — | 6 | ~1924 |
| Stanley Kowalski | Son | — | 14 | ~1916 |
| Mary Kowalski | Spouse | — | 40 | ~1890 |
| John Kowalski | Son | — | 16 | ~1914 |
| Helen Kowalski | Daughter | — | 12 | ~1918 |
| Anna Kowalski | Daughter | — | 10 | ~1920 |
| Sylvia Kowalski | Daughter | — | 8 | ~1922 |
Census Appearances
1920
Hudson, New …
Son, age 8
Hudson, New Jersey · implied b. ~1912 — 26 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Passaic, New …
Son, age 18
Passaic, New Jersey · implied b. ~1912 — 9 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Rubber Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Joseph Kowalski across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Kowalski
Son · 1930 · age 18 · b. ~1912 · New Jersey
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Sibling
John Kowalski
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Kowalski
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvia Kowalski
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kowalski
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kowalski
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kowalski
Sibling · 1930 · age 10
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 — Passaic, New Jersey
Open full size
1930 US Federal Census — Passaic, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1377:0420)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Michael Tuday | 17 | Son | — | New Jersey |
| 52 | Mary Tuday | 15 | Daughter | — | New Jersey |
| 53 | John Tuday | 13 | Son | — | New Jersey |
| 54 | Anna Tuday | 11 | Daughter | — | New Jersey |
| 55 | Joseph Babich | 37 | Head | Laborer | Poland |
| 56 | Cecelia Babich | 40 | Wife | — | Poland |
| 57 | Thaddeus Babich | 13 | Son | — | New Jersey |
| 58 | Michael Funck | 27 | Boarder | Laborer | Poland |
| 59 | George Funck | 25 | Boarder | Laborer | Poland |
| 60 | John Kowalski | 28 | Head | Laborer | New Jersey |
| 61 | Stella Kowalski | 27 | Wife | — | New Jersey |
| 62 | Edward Kowalski | 8 | Son | — | New Jersey |
| 63 | Theodore Kowalski | 6 | Son | — | New Jersey |
| 64 | Wanda Kowalski | 2 | Daughter | — | New Jersey |
| 65 | Anthony Sadowski | 41 | Head | Laborer | Poland |
| 66 | Sophie Sadowski | 37 | Wife | — | Poland |
| 67 | Helen Sadowski | 18 | Daughter | — | New Jersey |
| 68 | Mary Sadowski | 16 | Daughter | — | New Jersey |
| 69 | John Sadowski | 14 | Son | — | New Jersey |
| 70 | Joseph Sadowski | 12 | Son | — | New Jersey |
| 71 | Edward Sadowski | 10 | Son | — | New Jersey |
| 72 | Stanley Sadowski | 8 | Son | — | New Jersey |
| 73 | Chester Sadowski | 2 | Son | — | New Jersey |
| 74 | Raymond Kowalski | 27 | Head | Laborer | New Jersey |
| 75 | Catherine Kowalski | 23 | Wife | — | New Jersey |
| 76 | Raymond Kowalski | 3 | Son | — | New Jersey |
| 77 | James Kowalski | 1 | Son | — | New Jersey |
| 78 | John Kowalski | 0 | Son | — | New Jersey |
| 79 | Jennie Kowalski | 4 | Daughter | — | New Jersey |
| 80 | Helen Kowalski | 2 | Daughter | — | New Jersey |
| 81 | Joseph Kowalski | 40 | Head | Laborer | Poland |
| 82 | Mary Kowalski | 40 | Wife | — | Poland |
| 83 | Joseph Kowalski THIS PERSON | 18 | Son | Laborer | New Jersey |
| 84 | John Kowalski | 16 | Son | Laborer | New Jersey |
| 85 | Stanley Kowalski | 14 | Son | — | New Jersey |
| 86 | Helen Kowalski | 12 | Daughter | — | New Jersey |
| 87 | Anna Kowalski | 10 | Daughter | — | New Jersey |
| 88 | Sylvia P. Kowalski | 8 | Daughter | — | New Jersey |
| 89 | William Kowalski | 6 | Son | — | New Jersey |
| 90 | Andrew Krakowski | 42 | Head | Laborer | Poland |
| 91 | Frances Krakowski | 41 | Wife | — | Poland |
| 92 | Joseph Krakowski | 14 | Son | — | New Jersey |
| 93 | John Krakowski | 12 | Son | — | New Jersey |
| 94 | Jacob Tabak | 43 | Boarder | Laborer | Poland |
| 95 | Frances Bednarz | 39 | Head | Candy Maker | Poland |
| 96 | Mary Bednarz | 23 | Wife | Laborer | New Jersey |
| 97 | John Bednarz | 19 | Son | Laborer | New Jersey |
| 98 | Joseph Bednarz | 16 | Son | Laborer | New Jersey |
| 99 | Edward Bednarz | 13 | Son | — | New Jersey |
| 100 | Stanley Bednarz | 11 | Son | — | New Jersey |
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)