JC
John Carr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this John Carr across the 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 10-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Carr |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Chicago |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Maintenance |
| Industry | Y. S. Tube |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Maintenance |
| Township / Ward | East Chicago |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Irene Carr | Daughter | — | 10 | ~1930 |
| Mary Carr | Daughter | — | 13 | ~1927 |
| Catherine Carr | Daughter | — | 20 | ~1920 |
| Mildred Carr | Daughter | — | 24 | ~1916 |
| Michael Carr | Head | — | 53 | ~1887 |
| John Carr | Son | — | 23 | ~1917 |
| Frank Carr | Son | — | 16 | ~1924 |
| George Carr | Son | — | 18 | ~1922 |
| Thomas Carr | Son | — | 22 | ~1918 |
| Catherine Carr | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Lake, Indiana
Son, age 14
Lake, Indiana · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Croatia |
| Mother's Birthplace | Croatia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Indiana
Son, age 23
Lake-County, Indiana · implied b. ~1917 — 10 household members
| Surname | Carr |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Chicago |
| 1935 Residence (County) | Lake |
| Occupation | Maintenance |
| Industry | Y. S. Tube |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Carr
Son · 1940 · age 23 · b. ~1917 · Indiana
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Sibling
Mildred Carr
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Carr
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Carr
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Carr
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Carr
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Carr
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Carr
Sibling · 1940 · age 18
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
1940 US Federal Census — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01066-00325)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Victor | 24 | Daughter | No | Indiana |
| 2 | Robert Victor | 1 | Son | No | Indiana |
| 3 | Elizabeth Szabo | 84 | Mother | No | Hungary |
| 4 | Stephen Greslin | 53 | Head | Laborer | Yugoslavia |
| 5 | Eva Greslin | 52 | Wife | No | Yugoslavia |
| 6 | Alexander Greslin | 27 | Son | Laborer | Indiana |
| 7 | Michael Carr | 53 | Head | Machinist | Austria |
| 8 | Catherine Carr | 53 | Wife | No | Austria |
| 9 | Mildred Carr | 24 | Daughter | Nurse | Illinois |
| 10 | John Carr THIS PERSON | 23 | Son | Maintenance | Illinois |
| 11 | Thomas Carr | 22 | Son | Welder | Indiana |
| 12 | Catherine Carr | 20 | Daughter | No | Indiana |
| 13 | George Carr | 18 | Son | No | Indiana |
| 14 | Frank Carr | 16 | Son | No | Indiana |
| 15 | Mary Carr | 13 | Daughter | No | Indiana |
| 16 | Irene Carr | 10 | Daughter | No | Indiana |
| 17 | Michael Wotahico | 63 | Head | No | Hungary |
| 18 | Anne Wotahico | 62 | Wife | No | Hungary |
| 19 | Michael Wotahico | 27 | Son | Laborer | Indiana |
| 20 | Margaret Wotahico | 25 | Daughter | No | Illinois |
| 21 | Joseph Wotahico | 35 | Head | Laborer | Hungary |
| 22 | Rose Wotahico | 28 | Wife | No | Hungary |
| 23 | Joseph Wotahico | 9 | Son | No | Indiana |
| 24 | Robert Wotahico | 2 | Son | No | Indiana |
| 25 | Alexander Wotahico | 62 | Father | No | Hungary |
| 26 | John Dineza | 41 | Head | Laborer | Hungary |
| 27 | Elizabeth Dineza | 40 | Wife | No | Hungary |
| 28 | Elizabeth Dineza | 16 | Daughter | No | Indiana |
| 29 | Frank Dineza | 12 | Son | No | Indiana |
| 30 | Joseph Lisczak | 53 | Head | Janitor | Poland |
| 31 | Mary Lisczak | 53 | Wife | No | Poland |
| 32 | Walter Lisczak | 22 | Son | Laborer | Ohio |
| 33 | Stanley Lisczak | 20 | Son | Laborer | Indiana |
| 34 | Frank Lisczak | 18 | Son | No | Indiana |
| 35 | Mary Lisczak | 16 | Daughter | No | Indiana |
| 36 | Stephen Lisczak | 8 | Son | No | Indiana |
| 37 | John Evans | 26 | Head | Crane Operator | Illinois |
| 38 | Rose Evans | 22 | Wife | No | Indiana |
| 39 | Patricia Evans | 1 | Daughter | No | Indiana |
| 40 | Esther Evans | 12 | Sister | No | Indiana |
Related Census Records
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)