SS
Shirley Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Shirley Smith across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Shirley |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Chicago |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Shirley | Age | Birth yr |
|---|---|---|---|---|
| Shirley Smith | Daughter | — | 15 | ~1925 |
| Frederick Smith | Head | — | 46 | ~1894 |
| Howard Smith | Son | — | 11 | ~1929 |
| Frederick Smith | Son | — | 16 | ~1924 |
| Robert Smith | Son | — | 10 | ~1930 |
| Verne Smith | Son | — | 4 | ~1936 |
| David Smith | Son | — | 13 | ~1927 |
| Caroline Smith | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Cook, Illinois
Daughter, age 5
Cook, Illinois · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Shirley |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Cook-County, Illinois
Daughter, age 15
Cook-County, Illinois · implied b. ~1925 — 8 household members
| Surname | Smith |
| Given Name | Shirley |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Shirley Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Shirley Smith
Daughter · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Frederick Smith
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Smith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Verne Smith
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Smith
Sibling · 1940 · age 11
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-t0627-00954-00876)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nera Smolenski | 42 | wife | — | Illinois |
| 42 | Walter Jr. Smolenski | 13 | son | — | Illinois |
| 43 | Delores Smolenski | 11 | daughter | — | Illinois |
| 44 | Robert Smolenski | 5 | son | — | Illinois |
| 45 | Frances Thompson | 39 | head | Chauffer | Illinois |
| 46 | Rose Thompson | 35 | wife | — | Illinois |
| 47 | Maureen Thompson | 7 | daughter | — | Illinois |
| 48 | John Murphy | 51 | head | Caulker | Illinois |
| 49 | Esther Murphy | 46 | wife | — | Illinois |
| 50 | Marion Murphy | 24 | daughter | Bookkeeper | Illinois |
| 51 | John Jr. Murphy | 19 | son | New Worker | Illinois |
| 52 | Loraine Murphy | 14 | daughter | Making Wreaths | Illinois |
| 53 | James Darby | 34 | head | Steamfitter | Illinois |
| 54 | Eleanor Darby | 31 | wife | — | Illinois |
| 55 | Betty Mae Darby | 12 | daughter | — | Illinois |
| 56 | Geraldine Darby | 2 | daughter | — | Illinois |
| 57 | John Becker | 53 | head | Painter | Ohio |
| 58 | Etta Becker | 53 | wife | — | Indiana |
| 59 | John Jr. Becker | 15 | son | — | Illinois |
| 60 | Henry Harms | 48 | head | Machinist | Indiana |
| 61 | Clara Harms | 49 | wife | — | Illinois |
| 62 | Melvin Harms | 21 | son | Yard Clerk | Illinois |
| 63 | Myrtle Harms | 15 | daughter | — | Illinois |
| 64 | James J. Cavanaugh | 50 | head | Stationary Engineer | Illinois |
| 65 | Margaret Cavanaugh | 40 | wife | — | Michigan |
| 66 | William Cavanaugh | 21 | son | Bookkeeper Clerk | Illinois |
| 67 | Margaret Cavanaugh | 19 | daughter | File Clerk | Illinois |
| 68 | Charles Cavanaugh | 5 | son | — | Illinois |
| 69 | Frederick Smith | 46 | head | Automobile Mechanic | Colorado |
| 70 | Caroline Smith | 39 | wife | — | Illinois |
| 71 | Frederick Smith | 16 | son | — | California |
| 72 | Shirley Smith THIS PERSON | 15 | daughter | — | California |
| 73 | David Smith | 13 | son | — | Illinois |
| 74 | Howard Smith | 11 | son | — | Illinois |
| 75 | Robert Smith | 10 | son | — | Illinois |
| 76 | Verne Smith | 4 | son | — | Illinois |
| 77 | Michael J. Brown | 43 | head | Yard Laborer | Illinois |
| 78 | Mary A. Brown | 39 | wife | — | Michigan |
| 79 | Elizabeth Brown | 15 | daughter | — | Illinois |
| 80 | James J. Brown | 11 | son | — | 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)