Log in Sign up free

MC

Mary Costa — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · New York, New York

Our Model Tree links this Mary Costa across the 1920 and 1930 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 8-person household.

Age 11 b. ~1919 Female Daughter Born: New York Single

1930 Census Record Details

Census Year	1930
Location	New York, New York
Surname	Costa
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	11
Marital Status	Single
Birthplace	New York
Father's Birthplace	Italy
Mother's Birthplace	Italy
Additional Details
Occupation	none
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	Manhattan
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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Jennie Costa	Daughter	—	1	~1929
Luigi Costa	Son	—	6	~1924
Catherine Costa	Daughter	—	4	~1926
Joe Costa	Head	—	33	~1897
John Costa	Son	—	8	~1922
Mary Costa	Spouse	—	33	~1897
Mary Costa	Daughter	—	11	~1919
James Costa	Son	—	2	~1928

Census Appearances

1920

New York, …

Daughter, age 1

New York, New York · implied b. ~1919 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Costa
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	1
Marital Status	Single
Birthplace	New York
Father's Birthplace	Italy
Mother's Birthplace	Italy
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

New York, …

Daughter, age 11

New York, New York · implied b. ~1919 — 8 household members

Surname	Costa
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	11
Marital Status	Single
Birthplace	New York
Father's Birthplace	Italy
Mother's Birthplace	Italy
Occupation	none
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links Mary Costa across 2 US Census years (1920 and 1930) in New York, New York, using XGBoost record linkage.

Show:

This person

Anchor record

Mary Costa

Daughter · 1930 · age 11 · b. ~1919 · New York

★ You are viewing this record

Sibling

Luigi Costa

Sibling · 1930 · age 6

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

John Costa

Sibling · 1930 · age 8

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

James Costa

Sibling · 1930 · age 2

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Catherine Costa

Sibling · 1930 · age 4

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Jennie Costa

Sibling · 1930 · age 1

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:newyorkcensus00reel1560:0908)

Line	Name	Age	Relation	Occupation	Birthplace
51	Lillian Smiley	48	Head	None	Ireland
52	Francis Smiley	24	Son	None	New York
53	Lillian Smiley	21	Daughter	Maid	Ireland
54	Joseph Flynn	49	Head	Grocer	Ireland
55	Lucy Flynn	42	Wife	None	New York
56	Joseph Flynn	24	Son	Clerk	New York
57	William Flynn	23	Son	Clerk	New York
58	Edward Flynn	15	Son	None	New York
59	John Flynn	6	Son	None	New York
60	Rose Flemming	63	Head	None	Ireland
61	Emily Flemming	35	Daughter	Candy Maker	Ireland
62	Benjamin Sintof	35	Head	Operator	Russia
63	Rose Sintof	33	Wife	None	Russia
64	Rose Sintof	7	Daughter	None	New York
65	Silveria Sintof	5	Daughter	None	New York
66	Joseph Farmer	44	Head	Butcher	Scotland
67	Mary A. Farmer	41	Wife	House	Scotland
68	William Farmer	14	Son	None	Scotland
69	Bridget Farmer	12	Daughter	None	Scotland
70	Charlotte Farmer	7	Daughter	None	New York
71	Teresa Farmer	5	Daughter	None	New York
72	Margaret Farmer	3	Daughter	None	New York
73	Joseph Farmer	1	Son	None	New York
74	John Lynch	53	Head	Shipping Clerk	Ireland
75	Annie Lynch	40	Wife	None	Ireland
76	Dorothy Lynch	22	Daughter	Stenographer	New York
77	John Jr. Lynch	14	Son	Clerk	New York
78	John J. Savage	65	Head	Plumber	Ireland
79	Sarah Savage	46	Wife	None	England
80	Joe Costa	33	Head	Fruit	Italy
81	Mary Costa	33	Wife	None	Italy
82	Mary Costa THIS PERSON	11	Daughter	None	New York
83	John Costa	8	Son	None	New York
84	Luigi Costa	6	Son	None	New York
85	Catherine Costa	4	Daughter	None	New York
86	James Costa	2	Son	None	New York
87	Jennie Costa	1	Daughter	None	New York
88	George Psilous	31	Head	Restaurant	Greece
89	Mary Psilous	25	Wife	None	Greece
90	Helen Psilous	3	Daughter	None	New York
91	Liberty Psilous	1	Daughter	None	New York
92	Anna Still	45	Head	None	New York
93	Elizabeth Widmer	46	Sister	Suit Maker	New York
94	Margaret Coleman	47	Cousin	Tel. Operator	England
95	Thomasina Smith	45	Boarder	Accounting	Virginia
96	James Dunn	56	Head	Laborer	Ireland
97	Mary Dunn	48	Wife	None	Ireland
98	Catherine Dunn	16	Daughter	None	New York
99	Peter Rafferty	49	Head	Plumber	Ireland
100	Nellie Rafferty	40	Wife	Tail Lady	Ireland

Search for Mary Costa

All Mary Costa Census Records Discover Costa Family Tree

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)

Report inaccurate data