JC
John Costello — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Chester-County, Pennsylvania
Our Model Tree links this John Costello across the 1930 and 1940 US Censuses in Chester-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 9-person household.
Age 46
b. ~1894
Male
Head
Born: Italy
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Chester-County, Pennsylvania |
| Surname | Costello |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | Phoenixville |
| 1935 Residence (County) | Chester |
| Naturalization Status | First papers filed |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
| Township / Ward | Phoenixville |
| Est. Birth Year | ~1894 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Josephine Costello | Daughter | — | 13 | ~1927 |
| Mary Costello | Spouse | — | 43 | ~1897 |
| Dolores Costello | Daughter | — | 15 | ~1925 |
| Rose Costello | Daughter | — | 17 | ~1923 |
| Salvatore Costello | Son | — | 23 | ~1917 |
| John Costello | Head | — | 46 | ~1894 |
| Stella Costello | Daughter | — | 22 | ~1918 |
| Anthony Costello | Son | — | 11 | ~1929 |
| Frances Costello | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Chester, Pennsylvania
Head, age 38
Chester, Pennsylvania · implied b. ~1892 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Italy |
| Naturalization Status | Naturalized |
| Year of Immigration | 1912 |
| Age at First Marriage | 25 |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | Laborer |
| Industry | Packing House |
| Class of Worker | W |
| Can Read/Write | No |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
1940
Chester-County, Pennsylvania
Head, age 46
Chester-County, Pennsylvania · implied b. ~1894 — 9 household members
| Surname | Costello |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | Phoenixville |
| 1935 Residence (County) | Chester |
| Naturalization Status | First papers filed |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 John Costello across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Costello
Head · 1940 · age 46 · b. ~1894 · Pennsylvania
★ 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 — Chester-County, Pennsylvania
Open full size
1940 US Federal Census — Chester-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03466-00239)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martha Scella | 24 | Wife | Seamer | Penna |
| 42 | James Scella | 2 | Daughter | — | Penna |
| 43 | Francis Scella | 27 | Head | Baller | Penna |
| 44 | Amelia Scella | 24 | Wife | Mender | Penna |
| 45 | Elizabeth Scella | 23 | Lodger | Inspector | Penna |
| 46 | Nicholas Scella | 25 | Lodger | Laborer | Penna |
| 47 | James Adams | 41 | Head | Laborer | Penna |
| 48 | Bernice Adams | 30 | Wife | Puller | Oklahoma |
| 49 | Lenore Adams | 7 | Daughter | — | Penna |
| 50 | Gloria Adams | 5 | Daughter | — | Penna |
| 51 | Paul Adams | 5 | Son | — | Penna |
| 52 | Frank Farmer | 44 | Head | Laborer | Penna |
| 53 | Philomena Farmer | 38 | Wife | — | Italy |
| 54 | Philomena Farmer | 18 | Daughter | Handwork | Penna |
| 55 | Joseph Farmer | 17 | Son | — | Penna |
| 56 | Victoria Farmer | 14 | Daughter | — | Penna |
| 57 | Anthony Farmer | 12 | Son | — | Penna |
| 58 | John Mignella | 25 | Head | Knitter | Penna |
| 59 | Mary Mignella | 20 | Wife | — | Penna |
| 60 | Mary Ann Mignella | 4 | Daughter | — | Penna |
| 61 | John Mignella | 2 | Son | — | Penna |
| 62 | James Steward | 44 | Head | Handwork | Penna |
| 63 | James B Steward | 23 | Son | Laborer | Penna |
| 64 | John Costello THIS PERSON | 46 | Head | — | Italy |
| 65 | Mary Costello | 43 | Wife | — | Italy |
| 66 | Salvatore Costello | 23 | Son | Laborer | Penna |
| 67 | Stella Costello | 22 | Daughter | Packer | Penna |
| 68 | Frances Costello | 21 | Daughter | Helper | Penna |
| 69 | Rose Costello | 17 | Daughter | — | Penna |
| 70 | Dolores Costello | 15 | Daughter | — | Penna |
| 71 | Josephine Costello | 13 | Daughter | — | Penna |
| 72 | Anthony Costello | 11 | Son | — | Penna |
| 73 | Anthony Chico | 62 | Head | Laborer | Italy |
| 74 | Mary Chico | 62 | Wife | — | Italy |
| 75 | Genevieve Chico | 17 | Daughter | — | Penna |
| 76 | Harry Consolvo | 54 | Head | Laborer | New Jersey |
| 77 | Edna Consolvo | 50 | Wife | — | Penna |
| 78 | Joseph Consolvo | 25 | Son | Finisher | Penna |
| 79 | Charles Consolvo | 20 | Son | — | Penna |
| 80 | Kay Consolvo | 18 | Daughter | — | Penna |
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)