JC
James Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Carroll across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Carroll |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | S-6 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1926 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Rita Carroll | Daughter | — | 11 | ~1929 |
| Patricia Carroll | Daughter | — | 17 | ~1923 |
| Robert Carroll | Son | — | 22 | ~1918 |
| Philip Carroll | Son | — | 19 | ~1921 |
| Willard Carroll | Son | — | 20 | ~1920 |
| Edward Carroll | Son | — | 9 | ~1931 |
| John Carroll | Son | — | 15 | ~1925 |
| James Carroll | Son | — | 14 | ~1926 |
| Thomas Carroll | Son | — | 7 | ~1933 |
| Anna Carroll | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 14
Cook-County, Illinois · implied b. ~1926 — 10 household members
| Surname | Carroll |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | S-6 |
| 1935 Residence | Same house |
| 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 James Carroll across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Carroll
Son · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Robert Carroll
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Carroll
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Carroll
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Carroll
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willard Carroll
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Carroll
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Carroll
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Carroll
Sibling · 1940 · age 7
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00950-00757)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Carroll | 48 | Wife | — | Michigan |
| 42 | Robert Carroll | 22 | Son | Electrician | Michigan |
| 43 | Willard Carroll | 20 | Son | Wood Cutter | Wisconsin |
| 44 | Philip Carroll | 19 | Son | Laborer | Wisconsin |
| 45 | Patricia Carroll | 17 | Daughter | — | Illinois |
| 46 | John Carroll | 15 | Son | — | Illinois |
| 47 | James Carroll THIS PERSON | 14 | Son | — | Illinois |
| 48 | Rita Carroll | 11 | Daughter | — | Illinois |
| 49 | Edward Carroll | 9 | Son | — | Illinois |
| 50 | Thomas Carroll | 7 | Son | — | Illinois |
| 52 | George Houlihan | 54 | Head | Laborer | Illinois |
| 53 | Sarah Houlihan | 47 | Wife | — | Illinois |
| 54 | Agnes Houlihan | 18 | Daughter | — | Illinois |
| 55 | Frances Houlihan | 16 | Daughter | — | Illinois |
| 56 | Clara Houlihan | 13 | Daughter | — | Illinois |
| 57 | Henry Vickers | 55 | Head | — | Illinois |
| 58 | Mary A. Vickers | 53 | Wife | — | Illinois |
| 59 | William Vickers | 26 | Son | Post Office Clerk | Illinois |
| 60 | Edith Vickers | 19 | Daughter | New Worker | Illinois |
| 61 | John Ab. Vickers | 14 | Son | Laborer | Illinois |
| 62 | Robert Vickers | 12 | Son | — | Illinois |
| 63 | Carl Preissler | 23 | Head | Bar-Boy | Missouri |
| 64 | Lillian Preissler | 21 | Wife | — | Illinois |
| 65 | Carl Preissler | 3 | Son | — | Illinois |
| 66 | Carl Kropfensteiner | 27 | Head | Baker'S Helper | Illinois |
| 67 | Bernice Kropfensteiner | 24 | Wife | — | Illinois |
| 68 | Charles Pangborn | 42 | Head | — | Illinois |
| 69 | Cecilia Pangborn | 43 | Wife | — | Illinois |
| 70 | Charles Pangborn | 15 | Son | — | Illinois |
| 71 | John Anderson | 33 | Head | Supervisor | Massachusetts |
| 72 | Lillian Anderson | 35 | Wife | — | Illinois |
| 73 | John Anderson | 4 | Son | — | Illinois |
| 74 | Audrey Ferro | 12 | Step-Daughter | — | Illinois |
| 75 | Jean Ferro | 10 | Step-Daughter | — | Illinois |
| 76 | William Hendrick | 74 | Lodger | — | Pennsylvania |
| 77 | John Holofka | 64 | Head | — | Pennsylvania |
| 78 | Joseph Holofka | 35 | Son | Maintenance Man | Illinois |
| 79 | Charles Burr | 32 | Step-Son | Laborer | Illinois |
| 80 | Daniel Pignato | 33 | Head | Moulder | Illinois |
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)