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Joseph Kowalski — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this Joseph Kowalski across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Adam & William — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Dupont Boro |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Occupation | Clerk |
| Industry | Road Construction W.P.A |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 120 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Dupont Boro |
| Est. Birth Year | ~1917 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Lottie Kowalski | Head | — | 47 | ~1893 |
| Joseph Kowalski | Son | — | 23 | ~1917 |
| Stanley Kowalski | Son | — | 14 | ~1926 |
Census Appearances
1920
Luzerne, Pennsylvania
Son, age 3
Luzerne, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 13
Luzerne, Pennsylvania · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 23
Luzerne-County, Pennsylvania · implied b. ~1917 — 3 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Dupont Boro |
| 1935 Residence (County) | Luzerne |
| Occupation | Clerk |
| Industry | Road Construction W.P.A |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 120 |
| Highest Grade | Hs 4 |
| 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 Joseph Kowalski across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Adam Kowalski (~0.92 confidence) and father William Kowalski (~0.92 confidence) and mother Anna Kowalski (~0.92 confidence) and mother Lottie Kowalski (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Adam Kowalski
b. ~1879
Source father
● Household
· direct · ~0.92
Father
William Kowalski
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Anna Kowalski
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Lottie Kowalski
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Kowalski
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Stanley Kowalski
Sibling · 1940 · age 14
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03550-00126)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lottie Kuchinskas | 10 | Daughter | — | Pennsylvania |
| 2 | Frank Kuchinskas | 8 | Son | — | Pennsylvania |
| 3 | Joseph Kuchinskas | 5 | Son | — | Pennsylvania |
| 4 | John Dziubak | 41 | Head | Laborer | Poland |
| 5 | Mary Dziubak | 35 | Wife | — | Pennsylvania |
| 6 | Joseph Mitchulski | 17 | Son | — | Pennsylvania |
| 7 | Joseph Mitchulski | 15 | Son | — | Pennsylvania |
| 8 | Mildred Mitchulski | 14 | Daughter | — | Pennsylvania |
| 9 | Cecelia Mitchulski | 11 | Daughter | — | Pennsylvania |
| 10 | Mary-Ann Mitchulski | 6 | Daughter | — | Pennsylvania |
| 11 | Frances Mitchulski | 3 | Daughter | — | Pennsylvania |
| 12 | William Kuna | 38 | Head | Foreman | Pennsylvania |
| 13 | Connie Kuna | 30 | Wife | — | Pennsylvania |
| 14 | Irene Kuna | 9 | Daughter | — | Pennsylvania |
| 15 | Edward Kuna | 8 | Son | — | Pennsylvania |
| 16 | Dolores Kuna | 7 | Daughter | — | Pennsylvania |
| 17 | William Kuna | 5 | Son | — | Pennsylvania |
| 18 | Bernadine Kuna | 2 | Daughter | — | Pennsylvania |
| 19 | Mary-Ann Kuna | 1 | Daughter | — | Pennsylvania |
| 20 | Anthony Dudzynski | 55 | Head | Miner | Poland |
| 21 | Nellie Dudzynski | 47 | Wife | — | Poland |
| 22 | Joseph Dudzynski | 17 | Son | New Worker | Pennsylvania |
| 23 | Walter Dudzynski | 15 | Son | — | Pennsylvania |
| 24 | Anthony Dudzynski | 13 | Son | — | Pennsylvania |
| 25 | Walter Dudzynski | 12 | Son | — | Pennsylvania |
| 26 | Irene Dudzynski | 8 | Daughter | — | Pennsylvania |
| 27 | Joseph Yathera | 71 | Father law | — | Poland |
| 28 | John Halko | 65 | Head | — | Austria |
| 29 | Mary Halko | 20 | Daughter | New Worker | Pennsylvania |
| 30 | Lottie Kowalski | 47 | Head | — | Poland |
| 31 | Joseph Kowalski THIS PERSON | 23 | Son | Clerk | Pennsylvania |
| 32 | Stanley Kowalski | 14 | Son | Clerk | Pennsylvania |
| 33 | Joseph Snopkowski | 26 | Head | Miner | Pennsylvania |
| 34 | Anna Snopkowski | 22 | Wife | — | Pennsylvania |
| 35 | Joseph Snopkowski | 2 | Son | — | Pennsylvania |
| 36 | Reverend Kalabowski | 37 | Head | Clergyman | Pennsylvania |
| 37 | Reverend Siberski | 35 | Assistant | Clergyman | Pennsylvania |
| 38 | Reverend Sutkowski | 35 | Assistant | Clergyman | Pennsylvania |
| 39 | Julia Kalabowski | 67 | Mother | — | Poland |
| 40 | Lillian Valva | 35 | Maid | Maid | Pennsylvania |
Pedigree Summary
Joseph + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)