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John Costello — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Costello across the 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 8-person household.
Age 9
b. ~1921
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Costello |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1921 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Costello | Head | — | 57 | ~1873 |
| Mary Costello | Daughter | — | 15 | ~1915 |
| John Costello | Son | — | 9 | ~1921 |
| Thomas Costello | Son | — | 19 | ~1911 |
| Raymond Costello | Son | — | 12 | ~1918 |
| Catherine Costello | Daughter | — | 17 | ~1913 |
| Thomas Costello | Son | — | 5 | ~1925 |
| Mary Costello | Spouse | — | 57 | ~1873 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 9
Philadelphia, Pennsylvania · implied b. ~1921 — 8 household members
| Surname | Costello |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Blair-County, Pennsylvania
Son, age 20
Blair-County, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costella |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Logan |
| 1935 Residence (County) | Blair |
| Occupation | New Worker |
| Hours Worked | 3 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Costello
Son · 1930 · age 9 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Costello
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Costello
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Costello
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Costello
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Costello
Sibling · 1930 · age 19
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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2138:0231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Lennon | 11 | Daughter | — | Pennsylvania |
| 52 | Joseph Lennon | 9 | Son | — | Pennsylvania |
| 53 | Catherine Lennon | 7 | Daughter | — | Pennsylvania |
| 54 | Theresa Lennon | 5 | Daughter | — | Pennsylvania |
| 55 | John Lennon | 4 | Son | — | Pennsylvania |
| 56 | John Lennon | 18 | Son | Clerk | Pennsylvania |
| 57 | Samuel Lollys | 27 | Head | Tailor | Lithuania |
| 58 | Annie Lollys | 22 | Wife | — | Lithuania |
| 59 | Anna Corson | 7 | Lodger | — | Pennsylvania |
| 60 | Sophia Corson | 1 | Lodger | — | Pennsylvania |
| 61 | Alice Graham | 57 | Head | — | Dist. of Col. |
| 62 | Edward E. Graham | 32 | Son | Clerk | Pennsylvania |
| 63 | Harry Kramer | 51 | Head | Janitor | Pennsylvania |
| 64 | Alice Kramer | 55 | Wife | — | Pennsylvania |
| 65 | Harry Kramer | 26 | Son | — | Pennsylvania |
| 66 | Rebecca Kramer | 21 | Daughter-in-law | — | Pennsylvania |
| 67 | James Campbell | 38 | Head | Machinist | Irish Free State |
| 68 | Mary Campbell | 35 | Wife | — | Irish Free State |
| 69 | Mary Catherine Campbell | 2 | Daughter | — | Pennsylvania |
| 70 | James Francis Campbell | 1 | Son | — | Pennsylvania |
| 71 | John Maguire | 57 | Head | Clerk | Pennsylvania |
| 72 | Susanna J. Maguire | 57 | Wife | — | Pennsylvania |
| 73 | Isaac Artis | 64 | Head | — | Pennsylvania |
| 74 | Sara Artis | 57 | Wife | — | Pennsylvania |
| 75 | Isaac Artis | 19 | Son | — | Pennsylvania |
| 76 | Elizabeth Ruley | 73 | Mother-in-law | — | Pennsylvania |
| 77 | John Mcnally | 23 | Head | — | Pennsylvania |
| 78 | Anna Mcnally | 23 | Wife | — | Pennsylvania |
| 79 | Marie Mcnally | 1 | Daughter | — | Pennsylvania |
| 80 | Marie Mcnally | 34 | Daughter | — | Pennsylvania |
| 81 | Lucille Mcnally | 21 | Daughter | Stenographer | Pennsylvania |
| 82 | Madeline Mcnally | 23 | Daughter | — | Pennsylvania |
| 83 | Thomas A. Costello | 57 | Head | Chauffeur | Irish Free State |
| 84 | Mary A. Costello | 57 | Wife | — | Irish Free State |
| 85 | Thomas Costello | 19 | Son | Machinist | Pennsylvania |
| 86 | Catherine Costello | 17 | Daughter | — | Pennsylvania |
| 87 | John Costello THIS PERSON | 9 | Son | — | Pennsylvania |
| 88 | Mary Costello | 15 | Daughter | — | Pennsylvania |
| 89 | Raymond Costello | 12 | Son | — | Pennsylvania |
| 90 | Thomas Costello | 5 | Son | — | Pennsylvania |
| 91 | William Tinsley | 59 | Head | — | Pennsylvania |
| 92 | Sarah Tinsley | 58 | Wife | — | Pennsylvania |
| 93 | John Zear | 61 | Head | — | Pennsylvania |
| 94 | Emma Zear | 61 | Wife | Janitor | Pennsylvania |
| 95 | Anna Zear | 15 | Daughter | — | Pennsylvania |
| 96 | Dorothy Zear | 13 | Daughter | — | Pennsylvania |
| 97 | John Zear | 10 | Son | — | Pennsylvania |
| 98 | Catherine Buckley | 39 | Head | Janitress | Irish Free State |
| 99 | Bernadette Buckley | 12 | Daughter | — | Pennsylvania |
| 100 | Bernadette Buckley | 12 | Daughter | — | Pennsylvania |
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)