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Joseph Kowalski — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Passaic, New Jersey
Our Model Tree links this Joseph Kowalski across the 1910 and 1920 US Censuses in Passaic, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 9-person household.
Age 35
b. ~1885
Male
Head
Born: Poland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Passaic, New Jersey |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Rubber Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | R |
| Birth Country | Poland |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | poland |
| Occupation | Laborer |
| Township / Ward | Passaic City |
| Est. Birth Year | ~1885 |
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 1920 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| John Kowalski | Son | — | 12 | ~1908 |
| Stanley Kowalski | Son | — | 2 | ~1918 |
| Joseph Kowalski | Head | — | 35 | ~1885 |
| Frank Kowalski | Son | — | 4 | ~1916 |
| Mary Kowalski | Spouse | — | 34 | ~1886 |
| Stella Kowalski | Daughter | — | 1 | ~1919 |
| Mary Kowalski | Daughter | — | 10 | ~1910 |
| Helen Kowalski | Daughter | — | 8 | ~1912 |
| Joseph Kowalski | Son | — | 6 | ~1914 |
Census Appearances
1910
Lackawanna, New …
Other, age 25
Lackawanna, New Jersey · implied b. ~1885 — 47 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Poland |
| Year of Immigration | 1904 |
| Naturalization Status | Alien |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Coal mine |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1920
Passaic, New …
Head, age 35
Passaic, New Jersey · implied b. ~1885 — 9 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Rubber Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | R |
| Birth Country | Poland |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | poland |
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 (1910 and 1920) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Joseph Kowalski
Head · 1920 · age 35 · b. ~1885 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Passaic, New Jersey
Open full size
1920 US Federal Census — Passaic, New Jersey
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1052unit:0799)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Kowalski | 45 | Head | Laborer | Poland |
| 2 | Mary Kowalski | 46 | Wife | — | Poland |
| 3 | Julia Kowalski | 14 | Daughter | Helper | Poland |
| 4 | August Kowalski | 12 | Son | — | New Jersey |
| 5 | Stanley Kowalski | 10 | Son | — | New Jersey |
| 6 | Helen Kowalski | 9 | Daughter | — | New Jersey |
| 7 | John Szewczyk | 34 | Head | Helper | Poland |
| 8 | Mary Szewczyk | 33 | Wife | — | Poland |
| 9 | John Szewczyk | 7 | Son | — | New Jersey |
| 10 | Joseph Szewczyk | 4 | Son | — | New Jersey |
| 11 | Mary Szewczyk | 1 | Daughter | — | New Jersey |
| 12 | John Kowalski | 37 | Head | Laborer | Poland |
| 13 | Mary Kowalski | 37 | Wife | — | Poland |
| 14 | John Kowalski | 13 | Son | — | New Jersey |
| 15 | Mary Kowalski | 11 | Daughter | — | New Jersey |
| 16 | Helen Kowalski | 8 | Daughter | — | New Jersey |
| 17 | Joseph Kowalski | 5 | Son | — | New Jersey |
| 18 | Stanley Kowalski | 3 | Son | — | New Jersey |
| 19 | Frank Kowalski | 1 | Son | — | New Jersey |
| 20 | Frank Szewczyk | 50 | Head | Laborer | Poland |
| 21 | Mary Szewczyk | 44 | Wife | — | Poland |
| 22 | John Szewczyk | 16 | Son | — | New Jersey |
| 23 | Helen Szewczyk | 14 | Daughter | — | New Jersey |
| 24 | Joseph Szewczyk | 12 | Son | — | New Jersey |
| 25 | Mary Szewczyk | 10 | Daughter | — | New Jersey |
| 26 | Frank Szewczyk | 8 | Son | — | New Jersey |
| 27 | Stanley Szewczyk | 6 | Son | — | New Jersey |
| 28 | August Szewczyk | 4 | Son | — | New Jersey |
| 29 | Edward Szewczyk | 2 | Son | — | New Jersey |
| 30 | Stella Szewczyk | 1 | Daughter | — | New Jersey |
| 31 | Joseph Kowalski THIS PERSON | 35 | Head | Laborer | Poland |
| 32 | Mary Kowalski | 34 | Wife | — | Poland |
| 33 | John Kowalski | 12 | Son | — | New Jersey |
| 34 | Mary Kowalski | 10 | Daughter | — | New Jersey |
| 35 | Helen Kowalski | 8 | Daughter | — | New Jersey |
| 36 | Joseph Kowalski | 6 | Son | — | New Jersey |
| 37 | Frank Kowalski | 4 | Son | — | New Jersey |
| 38 | Stanley Kowalski | 2 | Son | — | New Jersey |
| 39 | Stella Kowalski | 1 | Daughter | — | New Jersey |
| 40 | John Szewczyk | 38 | Head | Laborer | Poland |
| 41 | Mary Szewczyk | 36 | Wife | — | Poland |
| 42 | John Szewczyk | 14 | Son | — | New Jersey |
| 43 | Mary Szewczyk | 12 | Daughter | — | New Jersey |
| 44 | Helen Szewczyk | 10 | Daughter | — | New Jersey |
| 45 | Joseph Szewczyk | 8 | Son | — | New Jersey |
| 46 | Frank Szewczyk | 6 | Son | — | New Jersey |
| 47 | Stanley Szewczyk | 4 | Son | — | New Jersey |
| 48 | Edward Szewczyk | 2 | Son | — | New Jersey |
| 49 | Stella Szewczyk | 1 | Daughter | — | New Jersey |
| 50 | Frank Kowalski | 40 | Head | Laborer | Poland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)