JC
John Costello — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Costello across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 6-person household.
Age 42
b. ~1898
Male
Head
Born: Porto Rico
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Costello |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Porto Rico |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Mechanic |
| Industry | L.R.R. Repair Shop |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1512 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birthplace (normalized) | porto rico |
| Occupation | Mechanic |
| Township / Ward | New York City |
| Est. Birth Year | ~1898 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Carmen Costello | Spouse | — | 44 | ~1896 |
| Augustine Lbenza | Other | — | 67 | ~1873 |
| Stella Costello | Daughter | — | 7 | ~1933 |
| John Costello | Head | — | 42 | ~1898 |
| Gladys Costello | Daughter | — | 12 | ~1928 |
| William Costello | Son | — | 11 | ~1929 |
Census Appearances
1920
Dubuque, Iowa
Other, age 23
Dubuque, Iowa · implied b. ~1897 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Castillo |
| Given Name | Juan Edel |
| Relationship to Head | Pupil |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Porto Rico |
| Year of Immigration | 1916 |
| Father's Birthplace | Porto Rico |
| Mother's Birthplace | Porto Rico |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birthplace (normalized) | porto rico |
1930
Queens, New …
Head, age 33
Queens, New York · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Castello |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Porto Rico |
| Naturalization Status | Alien |
| Year of Immigration | 1915 |
| Age at First Marriage | 26 |
| Father's Birthplace | Porto Rico |
| Mother's Birthplace | Porto Rico |
| Occupation | Cleaner |
| Industry | Subway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Spanish |
| Home Owned/Rented | R |
| Home Value / Rent | 32 |
| Birthplace (normalized) | porto rico |
1940
New-York-County, New …
Head, age 42
New-York-County, New York · implied b. ~1898 — 6 household members
| Surname | Costello |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Porto Rico |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Occupation | Mechanic |
| Industry | L.R.R. Repair Shop |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1512 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birthplace (normalized) | porto rico |
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 John Costello across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Costello
Head · 1940 · age 42 · b. ~1898 · New York
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02671-00302)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Josephine Ramirez | 9 | daughter | — | New York |
| 2 | Joseph Ramirez | 8 | son | — | New York |
| 3 | Theodore Gueli | 63 | head | Handyman | Italy |
| 4 | Elizabeth Gueli | 42 | wife | 0 | West Indies |
| 5 | Theodore Gueli | 9 | son | — | New York |
| 6 | Joseph Gueli | 6 | son | — | New York |
| 7 | Enit Gueli | 4 | son | — | New York |
| 8 | Josephine Fernandez | 45 | head | Kitchen Help | Porto Rico |
| 9 | Blanche Sotomayor | 27 | cousin | Finisher | Porto Rico |
| 10 | Raphael Gomez | 38 | head | Chauffeur | Cuba |
| 11 | Elaine Gomez | 26 | wife | 0 | Colorado |
| 12 | Raphael Gomez | 8 | son | — | Cuba |
| 13 | Louis Gomez | 5 | son | — | New York |
| 14 | Mercedes Gomez | 3 | daughter | — | New York |
| 15 | Rosemarie Gomez | 1 | daughter | — | New York |
| 16 | Robert Ortiz | 32 | head | Laborer | Porto Rico |
| 17 | Consuelo (X) Ortiz | 31 | wife | 0 | Porto Rico |
| 18 | Robert Jr Ortiz | 12 | son | — | New York |
| 19 | Edwin Ortiz | 10 | son | — | Porto Rico |
| 20 | Ida Ortiz | 7 | daughter | — | New York |
| 21 | John Ortiz | 3 | son | — | New York |
| 22 | Frederick Burgess | 28 | head | Laborer | Pennsylvania |
| 23 | Alice (X) Burgess | 28 | wife | 0 | Porto Rico |
| 24 | Frederick Burgess | 7 | son | — | New York |
| 25 | Michael Burgess | 3 | son | — | New York |
| 26 | Catherine Baird | 33 | head | 0 | New York |
| 27 | Margaret Baird | 13 | daughter | — | New York |
| 28 | Catherine Baird | 10 | daughter | — | New York |
| 29 | George Baird | 8 | son | — | New York |
| 30 | Patricia Baird | 6 | daughter | — | New York |
| 31 | John Benjamin | 47 | head | Superintendent | Georgia |
| 32 | Alice Benjamin | 38 | wife | 0 | Kentucky |
| 33 | Charles Anderson | 39 | head | Barber | South Carolina |
| 34 | John Costello THIS PERSON | 42 | head | Mechanic | Porto Rico |
| 35 | Carmen Costello | 44 | wife | 0 | Porto Rico |
| 36 | Gladys Costello | 12 | daughter | — | New York |
| 37 | William Costello | 11 | son | — | New York |
| 38 | Stella Costello | 7 | daughter | — | New York |
| 39 | Augustine Lbenza | 67 | lodger | 0 | Porto Rico |
| 40 | Manuel Gracia | 77 | head | 0 | Porto Rico |
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)