CS
Carol Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Carol Smith across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 5-person household.
Age 19
b. ~1921
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Carol |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | OAK PARK |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Occupation | Elevator Operator |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 731 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Elevator Operator |
| Township / Ward | Oak Park |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Carol | Age | Birth yr |
|---|---|---|---|---|
| Carol Smith | Daughter | — | 19 | ~1921 |
| Betty Mumper | Other | — | 19 | ~1921 |
| Irving Smith | Head | — | 44 | ~1896 |
| Ruth Smith | Spouse | — | 44 | ~1896 |
| Jack Smith | Son | — | 8 | ~1932 |
Census Appearances
1930
Cook, Illinois
Daughter, age 9
Cook, Illinois · implied b. ~1921 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Carol |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Cook-County, Illinois
Daughter, age 19
Cook-County, Illinois · implied b. ~1921 — 5 household members
| Surname | Smith |
| Given Name | Carol |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | OAK PARK |
| 1935 Residence (County) | COOK |
| Occupation | Elevator Operator |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 731 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Carol Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Carol Smith
Daughter · 1940 · age 19 · b. ~1921 · Illinois
★ You are viewing this record
Sibling
Jack Smith
Sibling · 1940 · age 8
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
40 people indexed on this census page (nara:1940:m-t0627-00785-00144)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Mack | 32 | Head | Chauffeur | Wisconsin |
| 2 | Dorothy Q. Mack | 31 | Wife | — | Minnesota |
| 3 | Joseph Jr. Mack | 2 | Son | — | Illinois |
| 4 | James A. Mcintosh | 59 | Head | Salesman | Canada Eng |
| 5 | Lois M. Mcintosh | 55 | Wife | — | Illinois |
| 6 | Wendell C. Daniels | 39 | Head | Appraiser | Michigan |
| 7 | Jeanette Daniels | 40 | Wife | — | Nebraska |
| 8 | Clinton Daniels | 5 | Son | — | Illinois |
| 9 | Elliott R. Smeeth | 40 | Head | Lawyer | Illinois |
| 10 | Adeline Y. Smeeth | 36 | Wife | Manager | Illinois |
| 11 | Earl T. Young | 51 | Head | Dentist | Kansas |
| 12 | Alice E. Young | 44 | Wife | — | Illinois |
| 13 | William E. Young | 17 | Son | — | Illinois |
| 14 | Katherine J. Young | 16 | Daughter | — | Illinois |
| 15 | Vernon N. Young | 14 | Daughter | — | Illinois |
| 16 | John H. Dierks | 32 | Head | Reporter | Illinois |
| 17 | Margaret Dierks | 31 | Wife | — | Wisconsin |
| 18 | John Dierks | 7 | Son | — | Illinois |
| 19 | Karin Dierks | 4 | Daughter | — | Illinois |
| 20 | Alexander Renehan | 35 | Head | Social Worker | Canada Eng |
| 21 | Dorothy Renehan | 33 | Wife | — | Illinois |
| 22 | David Renehan | 2 | Son | — | Illinois |
| 23 | Arthur Copeland | 80 | Head | Insurance Agent | Canada Eng |
| 24 | Virginia Copeland | 76 | Wife | — | Illinois |
| 25 | Daisy Copeland | 75 | Sister | — | Canada Eng |
| 26 | Charles Seng | 59 | Head | Janitor | Luxembourg |
| 27 | Mary Seng | 56 | Wife | — | Germany |
| 28 | William Quine|Quinn | 77 | Head | Executive | New York |
| 29 | Nellie S. Quine|Quinn | 74 | Wife | — | England |
| 30 | Charlotte Quine|Quinn | 45 | Daughter | Clerk | Illinois |
| 31 | David Woodruff | 67 | Head | Teacher | Illinois |
| 32 | Marie Anderson | 22 | Head | Key Punch Operator | Illinois |
| 33 | Lucy L. Scott | 45 | Head | Cooking | Canada Eng |
| 34 | Irving H. Smith | 44 | Head | Stationary Engineer | Michigan |
| 35 | Ruth Smith | 44 | Wife | — | Wisconsin |
| 36 | Carol Smith THIS PERSON | 19 | Daughter | Elevator Operator | Wisconsin |
| 37 | Jack Smith | 8 | Son | — | Illinois |
| 38 | Betty Mumper | 19 | Niece | Clerk | Wisconsin |
| 39 | Harold J. Bunn | 30 | Head | Assistant Manager | Michigan |
| 40 | Helen Bunn | 31 | Wife | — | Michigan |
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)