MC
Mary Costa — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary Costa across the 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 11-person household.
Age 49
b. ~1891
Female
Spouse
Born: Italy
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | New York City |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | No 0 |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
| Township / Ward | New York City |
| Est. Birth Year | ~1891 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Costa | Spouse | — | 49 | ~1891 |
| John Costa | Son | — | 20 | ~1920 |
| Thomas Costa | Head | — | 51 | ~1889 |
| Philip Costa | Son | — | 13 | ~1927 |
| Neal Costa | Daughter | — | 27 | ~1913 |
| Nick Costa | Son | — | 26 | ~1914 |
| Helen Costa | Daughter | — | 22 | ~1918 |
| Orlando Costa | Daughter | — | 15 | ~1925 |
| Thomas Costa | Son | — | 11 | ~1929 |
| Joseph Costa | Son | — | 25 | ~1915 |
| Yolanda Costa | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Bronx, New …
Spouse, age 40
Bronx, New York · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Italy |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 22 |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Italian |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
1940
Bronx-County, New …
Spouse, age 49
Bronx-County, New York · implied b. ~1891 — 11 household members
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | New York City |
| Naturalization Status | Alien |
| Highest Grade | No 0 |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
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 Mary Costa across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Costa
Spouse · 1940 · age 49 · b. ~1891 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02462-00903)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna B. Oheimer | 58 | Sister in law | Secretary | New Jersey |
| 2 | Philip Badame | 50 | Head | Ice Dealer | Italy |
| 3 | Josephine Badame | 35 | Wife | — | Italy |
| 4 | Frank Badame | 16 | Son | — | New York |
| 5 | Rose Badame | 15 | Daughter | — | New York |
| 6 | Joseph Badame | 12 | Son | — | New York |
| 7 | Columbus Schioffi | 72 | Head | — | Italy |
| 8 | Dorothy Schioffi | 46 | Wife | — | New York |
| 9 | Lorraine Schioffi | 9 | Daughter | — | New York |
| 10 | Rocco Montellese | 49 | Head | Barber | Italy |
| 11 | Anna Montellese | 48 | Wife | — | Pennsylvania |
| 12 | Mary Montellese | 19 | Daughter | — | New York |
| 13 | Dominick Montellese | 16 | Son | — | New York |
| 14 | James Montellese | 12 | Son | — | New York |
| 15 | Thomas Costa | 51 | Head | 48 | Italy |
| 16 | Mary Costa THIS PERSON | 49 | Wife | — | Italy |
| 17 | Neal Costa | 27 | Daughter | 17 | New York |
| 18 | Nick Costa | 26 | Son | 48 | New York |
| 19 | Joseph Costa | 25 | Son | 40 | New York |
| 20 | Helen Costa | 22 | Daughter | 17 | New York |
| 21 | John Costa | 20 | Son | 40 | New York |
| 22 | Yolanda Costa | 18 | Daughter | 28 | New York |
| 23 | Orlando Costa | 15 | Daughter | — | New York |
| 24 | Philip Costa | 13 | Son | — | New York |
| 25 | Thomas Jr. Costa | 11 | Son | — | New York |
| 26 | Arthur | 44 | Head | — | Italy |
| 27 | Mary | 44 | Wife | — | Italy |
| 28 | Rose | 23 | Daughter | — | New York |
| 29 | Louise | 21 | Daughter | 40 | New York |
| 30 | Pauline | 20 | Daughter | 28 | New York |
| 31 | John | 19 | Son | 28 | New York |
| 32 | Angelina | 16 | Daughter | — | New York |
| 33 | Nick | 14 | Son | — | New York |
| 34 | Arthur | 11 | Son | — | New York |
| 35 | Rose Pezzullo | 72 | Mother in law | — | Italy |
| 36 | Isnalo Mangino | 40 | Head | 42 | Italy |
| 37 | Adeline Mangino | 33 | Wife | — | Michigan |
| 38 | Jennie Mangino | 16 | Daughter | — | New York |
| 39 | Philip Mangino | 11 | Son | — | New York |
| 40 | John Shea | 44 | Head | Police Officer | New York |
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)