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Mary Koch — 1920 US Census Record

Linked across censuses

1920 United States Federal Census · Queens, New York

Our Model Tree links this Mary Koch across the 1920 and 1930 US Censuses in Queens, New York (XGBoost, ~Confirmed) — first a spouse (b.~1865), then head of a 6-person household.

Age 55 b. ~1865 Female Spouse Born: Germany Married

1920 Census Record Details

Census Year1920
LocationQueens, New York
SurnameKoch
Given NameMary
Relationship to Headwife
SexF
Color / RaceWhite
Age55
Marital StatusMarried
BirthplaceGermany
Year of Immigration1892
Naturalization StatusAlien
Father's BirthplaceGermany
Mother's BirthplaceGermany
Additional Details
Occupationnone
Can ReadNo
Can WriteNo
Speaks EnglishNo
Mother TongueGerman
Birth CountryGermany
Birthplace (normalized)germany
Township / WardMaspeth New York
Est. Birth Year~1865

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.

6 people recorded at the same address in the 1920 census.

Name Relation to head Relative to Mary Age Birth yr
Mary Koch Spouse — 55 ~1865
Frank Koch Son — 13 ~1907
Conrad Koch Head — 57 ~1863
John Koch Son — 15 ~1905
Madeline Koch Daughter — 22 ~1898
Mary Koch Daughter — 11 ~1909

Census Appearances

1920
Queens, New …
Spouse, age 55
Queens, New York · implied b. ~1865 — 6 household members
Surname Koch
Given Name Mary
Relationship to Head wife
Sex F
Color / Race White
Age 55
Marital Status Married
Birthplace Germany
Year of Immigration 1892
Naturalization Status Alien
Father's Birthplace Germany
Mother's Birthplace Germany
Occupation none
Can Read No
Can Write No
Speaks English No
Mother Tongue German
Birth Country Germany
Birthplace (normalized) germany
1930
Queens, New …
Spouse, age 65
Queens, New York · implied b. ~1865 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Koch
Given Name Marie
Relationship to Head Wife
Sex F
Color / Race White
Age 65
Marital Status Married
Birthplace Germany
Naturalization Status Naturalized
Year of Immigration 1883
Age at First Marriage 30
Father's Birthplace Germany
Mother's Birthplace Germany
Can Read/Write Yes
Mother Tongue German
Birth Country Germany
Birthplace (normalized) germany

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 Koch across 2 US Census years (1920 and 1930) in Queens, New York, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Koch
Spouse · 1920 · age 55 · b. ~1865 · New York
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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 — Queens, New York Open full size

Page Contents

50 people indexed on this census page (ia:1920:14thcensusofpopu1231unit:0277)

Line Name Age Relation Occupation Birthplace
51 Helen 45 wife None New York
52 Gustav 17 son Feeder New York
53 Alfred 14 son None New York
54 Frederick 12 son None New York
55 Leon Steidel 40 head Carpenter Germany
56 Clara Steidel 38 wife None Germany
57 Leon Steidel 14 son None New York
58 Paul Steidel 12 son None New York
59 Albert Steidel 8 son None New York
60 Catherine Steidel 6 daughter None New York
61 Herman Engel 36 head Bookbinder Germany
62 Henrietta Engel 33 daughter None New York
63 Herman Engel 14 son None New York
64 Edward Engel 13 son None New York
65 William Engel 6 son None New York
66 Clara Engel 1 daughter None New York
67 Gustav Engel 69 head Carpenter Germany
68 Frank Grylocky 26 head Laborer Poland
69 Stella Grylocky 20 wife None Poland
70 John Grylocky 1 son None New York
71 Victoria Grylocky 0 daughter None New York
72 Conrad Koch 57 head Driver Germany
73 Mary Koch THIS PERSON 55 wife None Germany
74 Madeline Koch 22 daughter Clerical Work New York
75 John Koch 15 son Errand Boy New York
76 Frank Koch 13 son None New York
77 Mary Koch 11 daughter None New York
78 Isador Kuchander 38 head Driver Poland
79 Antonia Kuchander 38 wife None Poland
80 Leola Kuchander 15 son None New York
81 Annie Kuchander 13 daughter None New York
82 Victoria Kuchander 11 daughter None New York
83 Lottie Kuchander 9 daughter None New York
84 Isador Kuchander 7 son None New York
85 Adam Kuchander 4 son None New York
86 Helen Kuchander 2 daughter None New York
87 Frank Haas 51 head Conductor New York
88 Josephine Haas 44 wife Sanitary Cleaner New York
89 Gerard Mone 32 head Mason New York
90 Minnie Mone 32 wife None New York
91 John Mone 11 son None New York
92 Andrew Mone 60 father None Ireland
93 William Wolff 31 head Laborer New York
94 Kate Wolff 30 wife None New York
95 Mary Wolff 8 daughter None New York
96 William Wolff 2 son None New York
97 Bennie Krom 30 head Fireman Poland
98 Julia Krom 29 wife None Poland
99 Helen Krom 3 daughter None New York
100 Frank Krom 1 son None New York

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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)

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