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Joseph Kowalski — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Milwaukee, Wisconsin
Our Model Tree links this Joseph Kowalski across the 1920 and 1930 US Censuses in Milwaukee, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 12-person household.
Age 13
b. ~1917
Male
Son
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Milwaukee, Wisconsin |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Poland |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Milwaukee City |
| 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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Marceline Kowalski | Daughter | — | 1 | ~1929 |
| Helen Kowalski | Other | — | 43 | ~1887 |
| Angeline Kowalski | Daughter | — | 7 | ~1923 |
| Theodore Kowalski | Son | — | 18 | ~1912 |
| Cyril Kowalski | Son | — | 22 | ~1908 |
| Lucien Kowalski | Son | — | 19 | ~1911 |
| Joseph Kowalski | Head | — | 50 | ~1880 |
| Joseph Kowalski | Son | — | 13 | ~1917 |
| Vernon Kowalski | Son | — | 6 | ~1924 |
| Sophie Kowalski | Daughter | — | 16 | ~1914 |
| Virginia Kowalski | Daughter | — | 12 | ~1918 |
| Raymond Kowalski | Son | — | 3 | ~1927 |
Census Appearances
1920
Milwaukee, Wisconsin
Son, age 3
Milwaukee, Wisconsin · implied b. ~1917 — 13 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 | Wisconsin |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Polish |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Milwaukee, Wisconsin
Son, age 13
Milwaukee, Wisconsin · implied b. ~1917 — 12 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Poland |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Milwaukee, Wisconsin, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Kowalski
Son · 1930 · age 13 · b. ~1917 · Wisconsin
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Sibling
Raymond Kowalski
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marceline Kowalski
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucien Kowalski
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angeline Kowalski
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Kowalski
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Kowalski
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cyril Kowalski
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Kowalski
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sophie Kowalski
Sibling · 1930 · age 16
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 — Milwaukee, Wisconsin
Open full size
1930 US Federal Census — Milwaukee, Wisconsin
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2597unit:0583)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | August Hassel | 29 | Son-in-law | Laborer | Wisconsin |
| 2 | Juanita Hassel | 20 | Daughter | — | Wisconsin |
| 3 | Lois A. Hassel | 2 | Gr. Daughter | — | Wisconsin |
| 4 | Joyce Hassel | 0 | Gr. Daughter | — | Wisconsin |
| 5 | Leonard Anderson | 18 | Nephew | Attendant | Wisconsin |
| 6 | Roger Anderson | 9 | Nephew | — | Wisconsin |
| 7 | Fred S. Rugh | 45 | Lodger | Carpenter | Wisconsin |
| 8 | Joseph Stepalensky | 43 | Head | Cutter | Czechoslovakia |
| 9 | Mary Stepalensky | 46 | Wife-H | — | Czechoslovakia |
| 10 | Sylvester Stepalensky | 15 | Son | — | Wisconsin |
| 11 | Clara Stepalensky | 14 | Daughter | — | Wisconsin |
| 12 | Chester Stepalensky | 12 | Son | — | Wisconsin |
| 13 | Lorraine Stepalensky | 10 | Daughter | — | Wisconsin |
| 14 | Florian Stepalensky | 8 | Son | — | Wisconsin |
| 15 | Margaret Stepalensky | 5 | Daughter | — | Wisconsin |
| 16 | Caroline Fischer | 22 | Mother-in-law | Bookkeeper | Wisconsin |
| 17 | Everett Anderson | 38 | Head | Salesman | Iowa |
| 18 | Nellie Anderson | 32 | Wife-H | — | Wisconsin |
| 19 | Violet Anderson | 8 | Daughter | — | Wisconsin |
| 20 | Joseph Kowalski | 50 | Head | Salesman | Poland |
| 21 | Helen Kowalski | 43 | Wife-H | — | Germany |
| 22 | Cyril Kowalski | 22 | Son | Laborer | Michigan |
| 23 | Lucien Kowalski | 19 | Son | Laborer | Wisconsin |
| 24 | Theodore Kowalski | 18 | Son | Assembling | Wisconsin |
| 25 | Sophie Kowalski | 16 | Daughter | — | Wisconsin |
| 26 | Joseph Kowalski THIS PERSON | 13 | Son | — | Wisconsin |
| 27 | Angeline Kowalski | 7 | Daughter | — | Wisconsin |
| 28 | Vernon Kowalski | 6 | Son | — | Wisconsin |
| 29 | Raymond Kowalski | 3 | Son | — | Wisconsin |
| 30 | Virginia Kowalski | 12 | Daughter | — | Wisconsin |
| 31 | Marceline Kowalski | 1 | Daughter | — | Wisconsin |
| 32 | Lauritz Bjerke | 57 | Head | Sweeper | Norway |
| 33 | Anne Bjerke | 58 | Wife-H | — | Sweden |
| 34 | Ray Thompson | 26 | Head | Machinist | Wisconsin |
| 35 | Alice Thompson | 19 | Wife-H | — | Norway |
| 36 | Catherine Thompson | 0 | Daughter | — | Wisconsin |
| 37 | Frederick Karl | 24 | Head | Elevator Operator | Wisconsin |
| 38 | Sylvia Karl | 21 | Wife-H | — | Wisconsin |
| 39 | Corenne Karl | 0 | Daughter | — | Wisconsin |
| 40 | Lena Petersen | 58 | Head | — | Denmark |
| 41 | Christ Langreig | 37 | Son-in-law | Mechanic | Norway |
| 42 | Emil Lemke | 57 | Head | Watchman | Indiana |
| 43 | Anna Lemke | 55 | Wife-H | — | Wisconsin |
| 44 | Charles Lemke | 16 | Son | — | Wisconsin |
| 45 | Robert Roeder | 35 | Head | Appraiser | Wisconsin |
| 46 | Emily Roeder | 34 | Wife-H | — | Wisconsin |
| 47 | Henry J. Adler | 53 | Head | Cartage | Wisconsin |
| 48 | Rose Adler | 49 | Wife-H | — | Wisconsin |
| 49 | Clarence Adler | 26 | Son | Driver | Wisconsin |
| 50 | Warren Spaugh | 29 | Head | Westerer | Illinois |
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)