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Mary Costa — 1930 US Census Record

Model Tree available

1930 United States Federal Census · New York, New York

Our Model Tree links this Mary Costa across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed), with identified parents Jack & Catherine — first a daughter (b.~1914), then head of a 7-person household.

Age 16 b. ~1914 Female Daughter Born: New York Single

1930 Census Record Details

Census Year1930
LocationNew York, New York
SurnameCosta
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age16
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceItaly
Mother's BirthplaceItaly
Additional Details
Can Read/WriteYes
VeteranNo
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardManhattan Borough New York
Est. Birth Year~1914

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.

7 people recorded at the same address in the 1930 census.

Name Relation to head Relative to Mary Age Birth yr
Mary Costa Daughter — 16 ~1914
Thomas Costa Head — 45 ~1885
Thomas Costa Son — 11 ~1919
John Costa Son — 5 ~1925
Anthony Costa Son — 14 ~1916
Catherine Costa Spouse — 42 ~1888
Vincent Costa Son — 8 ~1922

Census Appearances

1920
New York, …
Daughter, age 6
New York, New York · implied b. ~1914 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Costa
Given Name Mary
Relationship to Head daughter
Sex F
Color / Race White
Age 6
Marital Status Single
Birthplace New York
Father's Birthplace Italy
Mother's Birthplace Italy
Occupation none
Speaks English Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
New York, …
Daughter, age 16
New York, New York · implied b. ~1914 — 7 household members
Surname Costa
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 16
Marital Status Single
Birthplace New York
Father's Birthplace Italy
Mother's Birthplace Italy
Can Read/Write Yes
Veteran No
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
New-York-County, New …
Spouse, age 27
New-York-County, New York · implied b. ~1913 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Costas
Given Name Margaret
Relationship to Head Wife
Sex F
Color / Race White
Age 27
Marital Status Married
Birthplace New York
1935 Residence (City) New York City
1935 Residence (County) New York
Highest Grade No 8
1935 Residence Same house
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.
Model Tree available
Our Model Tree links Mary Costa across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jack Costa (~0.92 confidence) and mother Catherine Costa (~0.92 confidence) and father Thomas Costa (~0.92 confidence) and mother Catherine Costa (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Father
Jack Costa
b. ~1882
Source father
● Household · direct · ~0.92
Mother
Catherine Costa
b. ~1884
Source mother
● Household · direct · ~0.92
Father
Thomas Costa
b. ~1885
Source father
● Household · direct · ~0.92
Mother
Catherine Costa
b. ~1888
Source mother
● Household · direct · ~0.92
This person
Anchor record
Mary Costa
Daughter · 1930 · age 16 · b. ~1914 · New York
★ You are viewing this record
Sibling
Thomas Costa
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Costa
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Costa
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anthony Costa
Sibling · 1930 · 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

1930 US Federal Census — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1551:0214)

Line Name Age Relation Occupation Birthplace
51 James Spiropoulos 47 Head Proprietor Greece
52 Helen Spiropoulos 35 Wife — Greece
53 George Spiropoulos 2 Son — New York
54 Theodore Spiropoulos 1 Son — New York
55 Mary Spiropoulos 0 Daughter — New York
56 Catherine Spiropoulos 6 Daughter — New York
57 Margaret Spiropoulos 4 Daughter — New York
58 Anna Stavros 26 Boarder — Greece
59 Mary Stavros 12 Boarder — Greece
60 John Stavros 11 Boarder — Greece
61 John Stavros 11 Boarder — Greece
62 Pauline Stavros 5 Boarder — Greece
63 James Stavros 17 Boarder — Italy
64 Thomas Costa 45 Head — Italy
65 Catherine Costa 42 Wife — Italy
66 Mary Costa THIS PERSON 16 Daughter — New York
67 Anthony Costa 14 Son — New York
68 Thomas Costa 11 Son — New York
69 Vincent Costa 8 Son — New York
70 John Costa 5 Son — New York
71 Margaret Liberty 40 Head — New York
72 William Liberty 18 Son — New York
73 Martin Miller 45 Head — New York
74 George Sopkins 40 Head — Greece
75 Mary Sopkins 31 Wife — Italy
76 James Sopkins 10 Son — New York
77 John Sopkins 7 Son — New York
78 Christo Constantine 47 Head Chauffeur Greece
79 Mary Constantine 32 Wife — Greece
80 Louis Theofanis 47 Head — Greece
81 Mattie Theofanis 37 Wife — Greece
82 George Theofanis 13 Son — Connecticut
83 Nicholas Theofanis 10 Daughter — New York
84 James Theofanis 7 Daughter — New York
85 Louis Theofanis 5 Son — New York
86 Mary Theofanis 3 Daughter — New York
87 Helen Theofanis 1 Daughter — New York
88 Theodore Constantinides 47 Head — Turkey
89 Helen Constantinides 37 Wife — Turkey
90 Theodore Constantinides 15 Son — New York
91 Peter Constantinides 13 Son — New York
92 John Constantinides 10 Daughter — New York
93 Antonio Sosa 45 Head Cook Italy
94 Robert Migliaccio 37 Boarder Ice Man Italy
95 George Costa 31 Head — Italy
96 Anna Costa 25 Wife — Italy
97 Mary Costa 3 Daughter — France
98 Henry Costa 30 Boarder Waiter Italy
99 Antonio Costa 40 Boarder — Italy
100 George Bulgaris 33 Head Laundryman Greece

Search for Mary Costa

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Pedigree Summary

Mary + 4 siblings
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 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)

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