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Mary Kozlowski — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Allegany-County, New York

Our Model Tree links this Mary Kozlowski across the 1930 and 1940 US Censuses in Allegany-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 5-person household.

Age 21 b. ~1919 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationAllegany-County, New York
SurnameKozlowski
Given NameMary G.
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age21
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Centerville town
1935 Residence (County)Allegany
Additional Details
Income (1939)0
Highest GradeHs 2
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardCenterville Town
Est. Birth Year~1919

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.

5 people recorded at the same address in the 1940 census.

Name Relation to head Relative to Mary Age Birth yr
Mary Kozlowski Daughter — 21 ~1919
Frank Kozlowski Head — 55 ~1885
Stella Kozlowski Spouse — 50 ~1890
Sophie Kozlowski Daughter — 13 ~1927
Stanley Kozlowski Son — 17 ~1923

Census Appearances

1930
Allegany, New …
Daughter, age 11
Allegany, New York · implied b. ~1919 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Kozlowski
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 11
Marital Status Single
Birthplace New York
Father's Birthplace Poland-Russia
Mother's Birthplace Poland-Russia
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Allegany-County, New …
Daughter, age 21
Allegany-County, New York · implied b. ~1919 — 5 household members
Surname Kozlowski
Given Name Mary G.
Relationship to Head Daughter
Sex F
Color / Race White
Age 21
Marital Status Single
Birthplace New York
1935 Residence (City) Centerville town
1935 Residence (County) Allegany
Income (1939) 0
Highest Grade Hs 2
1935 Residence Same place
Birth State New York
Birth Country United States
Birthplace (normalized) new york

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.
Linked across censuses
Our Model Tree links Mary Kozlowski across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kozlowski
Daughter · 1940 · age 21 · b. ~1919 · New York
★ You are viewing this record
Sibling
Sophie Kozlowski
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Kozlowski
Sibling · 1940 · age 17
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 — Allegany-County, New York Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-02459-00500)

Line Name Age Relation Occupation Birthplace
41 Dora Vosburg 63 Wife — New York
42 Albert Crumbull 39 Hired hand Farm Laborer New York
43 Samuel K. Vosburg 31 Head Farmer New York
44 Myrtle L. Vosburg 27 Wife — New York
45 S. Merritt Vosburg 7 Son — New York
46 Vernon M. Vosburg 5 Son — New York
47 Marvin L. Vosburg 2 Son — New York
48 Mary Kolakowski 54 Head — Poland
49 Roman Kolakowski 20 Son — New York
50 Genevieve Kolakowski 18 Daughter — New York
51 Frederick Kolakowski 17 Son Farmer New York
52 Richard Kolakowski 15 Son — New York
53 Frank M. Kozlowski 55 Head Farmer Poland
54 Stella F. Kozlowski 50 Wife — Poland
55 Mary G. Kozlowski THIS PERSON 21 Daughter — New York
56 Stanley P. Kozlowski 17 Son Farm Laborer New York
57 Sophie H. Kozlowski 13 Daughter — New York
58 Chester E. Makowski 20 Head Truck Driver New York
59 Teddy G. Makowski 15 Brother Truck Driver New York
60 Michael Poremba 45 Head Farm Laborer Poland
61 Frank Wojciechowski 48 Partner Farm Laborer Poland
62 Edwin Wolfer 35 Head Farmer New York
63 Hazel F. V. Wolfer 37 Wife — Minnesota
64 Junie E. Wolfer 12 Son — New York
65 Dorothy M. Wolfer 7 Daughter — New York
66 Clarence E. Wolfer 5 Son — New York
67 Lester E. Wolfer 1 Son — New York
69 Lorenzo N. Clark 61 Head — New York
70 Mary C. Clark 62 Wife — New York
71 Albert E. Schramm 49 Head Farmer New York
72 Clara M. Schramm 55 Wife — New York
73 Edward F. Schramm 16 Son Farm Laborer New York
74 Delores A. Schramm 14 Daughter — New York
75 Alberta A. Schramm 13 Daughter — New York
76 Herbert Reid 65 Lodger — Massachusetts
77 Burt G. Hinkley 50 Head — New York
78 Emery W. Owens 35 Head Farmer New York
79 C. Evelyn Owens 33 Wife — New York
80 Robert D. Owens 5 Son — New York

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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)

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