JC
John Carr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this John Carr across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 2-person household.
Age 69
b. ~1871
Male
Head
Born: PENNA
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | CARR |
| Given Name | JOHN J. |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | PENNA |
| 1935 Residence (City) | PHILADELPHIA |
| 1935 Residence (County) | PHILADELPHIA |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1871 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Carr | Head | — | 69 | ~1871 |
| John Carr | Son | — | 38 | ~1902 |
Census Appearances
1920
Philadelphia, Pennsylvania
Head, age 51
Philadelphia, Pennsylvania · implied b. ~1869 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Occupation | Team Leader |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1930
Philadelphia, Pennsylvania
Head, age 60
Philadelphia, Pennsylvania · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Occupation | Lumberman |
| Industry | Dept Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Head, age 69
Philadelphia-County, Pennsylvania · implied b. ~1871 — 2 household members
| Surname | CARR |
| Given Name | JOHN J. |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | PENNA |
| 1935 Residence (City) | PHILADELPHIA |
| 1935 Residence (County) | PHILADELPHIA |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 Carr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Carr
Head · 1940 · age 69 · b. ~1871 · 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
24 people indexed on this census page (nara:1940:m-t0627-03721-00316)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry R Irvin | 53 | HEAD | Carpenter | PENNA |
| 2 | Mary Irvin | 42 | WIFE | Borler | PENNA |
| 3 | Eleanor Matze | 11 | DAUGHTER | — | PENNA |
| 4 | Theresa Matze | 8 | DAUGHTER | — | PENNA |
| 5 | John Matze | 6 | SON | — | PENNA |
| 6 | Thomas O'Neill | 8 | SON | — | PENNA |
| 7 | Robert O'Neill | 6 | SON | — | PENNA |
| 8 | Hugh O'Neill | 2 | SON | — | PENNA |
| 9 | Eleanor Hargan | 21 | DAUGHTER | Clerk | PENNA |
| 10 | Rebecca Rosen | 45 | WIFE | — | AUSTRIA |
| 11 | Mary E. Weber | 12 | DAUGHTER | — | PENNA |
| 12 | Walter R. Lafort | 19 | SON | Mechanic | PENNA |
| 13 | Marion Lafort | 13 | DAUGHTER | — | PENNA |
| 14 | Eugene Donnelly | 38 | HEAD | Checker | PENNA |
| 15 | Mary Donnelly | 32 | WIFE | — | PENNA |
| 16 | Eileen Donnelly | 3 | DAUGHTER | — | PENNA |
| 17 | Mary Donnelly | 1 | DAUGHTER | — | PENNA |
| 18 | Margaret Mellon | 22 | DAUGHTER | Comptometer Operator | PENNA |
| 19 | Mary Flynn | 72 | MOTHER-IN-LAW | — | FREE STATE IRELAND |
| 20 | John J. Carr THIS PERSON | 69 | HEAD | — | PENNA |
| 21 | John T. Carr | 38 | SON | Butcher | PENNA |
| 22 | Nellie Hahn | 65 | HEAD | — | PENNA |
| 23 | Helen Wixter | 51 | HEAD | Handfolder | PENNA |
| 24 | Nora Keating | 49 | SISTER | Machine Operator | 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)