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Joseph Kowalski — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Joseph Kowalski across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 12-person household.
Age 59
b. ~1881
Male
Head
Born: Poland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Dyer |
| Industry | Dye works |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 540 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Dyer |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1881 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Josephine Rocco | Spouse | — | 51 | ~1889 |
| Theresa Kowalski | Daughter | — | 14 | ~1926 |
| Rita Kowalski | Daughter | — | 16 | ~1924 |
| Laura Kowalski | Spouse | — | 52 | ~1888 |
| Mary Kowalski | Daughter | — | 18 | ~1922 |
| Joseph Kowalski | Head | — | 59 | ~1881 |
| Henry Kowalski | Son | — | 22 | ~1918 |
| Mickey Rocco | Son | — | 21 | ~1919 |
| Florence Rocco | Daughter | — | 11 | ~1929 |
| Concetta Rocco | Daughter | — | 18 | ~1922 |
| Fred Rocco | Son | — | 14 | ~1926 |
| Head Rocco | Other | — | — |
Census Appearances
1930
Delaware, Pennsylvania
Head, age 50
Delaware, Pennsylvania · implied b. ~1880 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1902 |
| Age at First Marriage | 21 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Plumber |
| Industry | Pipe mill |
| Class of Worker | W |
| Can Read/Write | No |
| Mother Tongue | Polish |
| Home Owned/Rented | R |
| Home Value / Rent | 12.00 |
| Radio Set | No |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Philadelphia-County, Pennsylvania
Head, age 59
Philadelphia-County, Pennsylvania · implied b. ~1881 — 12 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Occupation | Dyer |
| Industry | Dye works |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 540 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth Country | Poland |
| 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 (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Joseph Kowalski
Head · 1940 · age 59 · b. ~1881 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03709-00955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond Jankowski | 25 | Boarder | Driver | Penna |
| 42 | Walter Szewczak | 30 | Boarder | Packer | Penna |
| 43 | Joseph Kowalski THIS PERSON | 59 | Head | Dyer | Poland |
| 44 | Laura Kowalski | 52 | Wife | — | Poland |
| 45 | Henry Kowalski | 22 | Son | Laborer | Penna |
| 46 | Mary Kowalski | 18 | Daughter | New Worker | Penna |
| 47 | Rita Kowalski | 16 | Daughter | — | Penna |
| 48 | Theresa Kowalski | 14 | Daughter | — | Penna |
| 49 | Head Rocco | None | M | Docks - Wharves | — |
| 50 | Josephine Rocco | 51 | Wife | — | Penna |
| 51 | Mickey Rocco | 21 | Son | Wool Puller | Penna |
| 52 | Concetta Rocco | 18 | Daughter | New Worker | Penna |
| 53 | Fred Rocco | 14 | Son | — | Penna |
| 54 | Florence Rocco | 11 | Daughter | — | Penna |
| 55 | William Danelski | 38 | Head | Operator | Penna |
| 56 | Sophie Danelski | 28 | Wife | — | Penna |
| 57 | Lillian Danelski | 1 | Daughter | — | Penna |
| 58 | John Grabowski | 42 | Head | Stocky Board | Poland |
| 59 | Frances Grabowski | 50 | Wife | — | Penna |
| 60 | Joseph Alavaski | 22 | Son | Laborer | Penna |
| 61 | Rosetta Grabowski | 17 | Daughter | — | Penna |
| 62 | Stanley Komasewsky | 58 | Head | Weaver | Poland |
| 63 | Frances Komasewsky | 55 | Wife | — | Poland |
| 64 | Isabell Komasewsky | 20 | Daughter | Operator | Penna |
| 65 | Doris Komasewsky | 18 | Daughter | Stenographer | Penna |
| 66 | Constantine Yasiorski | 45 | Head | Laborer | Poland |
| 67 | Mary Yasiorski | 44 | Wife | — | Poland |
| 68 | Stanley Yasiorski | 20 | Son | Chauffer | Penna |
| 69 | Helen Yasiorski | 16 | Daughter | Nurse | Penna |
| 70 | Anthony Yasiorski | 15 | Son | — | Penna |
| 71 | Patrick Faby | 54 | Head | — | Penna |
| 72 | Mary Faby | 55 | Wife | 604 | Penna |
| 73 | James Gordon | 50 | Boarder | 606 | Penna |
| 74 | Carlo Refino | 47 | Head | 643 | Italy |
| 75 | Mary Refino | 46 | Wife | — | Italy |
| 76 | Samuel Refino | 21 | Son | Clerk | Penna |
| 77 | Francis Refino | 20 | Son | Delivery Boy | Penna |
| 78 | Peter Refino | 18 | Son | Clerk | Penna |
| 79 | Esther Refino | 17 | Daughter | — | Penna |
| 80 | June Refino | 13 | Daughter | — | Penna |
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)