DS
Doris Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Doris Smith across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 10-person household.
Age 10
b. ~1930
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Doris |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1930 |
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 Doris | Age | Birth yr |
|---|---|---|---|---|
| Judith Smith | Daughter | — | 5 | ~1935 |
| Zora Smith | Daughter | — | 18 | ~1922 |
| Doris Smith | Daughter | — | 10 | ~1930 |
| Naomi Smith | Daughter | — | 17 | ~1923 |
| Hope Smith | Daughter | — | 8 | ~1932 |
| Louis Smith | Head | — | 55 | ~1885 |
| Newell Smith | Son | — | 19 | ~1921 |
| Girard Smith | Son | — | 7 | ~1933 |
| Calvin Smith | Son | — | 13 | ~1927 |
| Naomi Smith | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Cook, Illinois
Daughter, age
Cook, Illinois · implied b. ~1930 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Doris |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| 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
Daughter, age 10
Cook-County, Illinois · implied b. ~1930 — 10 household members
| Surname | Smith |
| Given Name | Doris |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | No 4 |
| 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 Doris Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Doris Smith
Daughter · 1940 · age 10 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Naomi Smith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Judith Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Girard Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Calvin Smith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Zora Smith
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Newell Smith
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hope 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-t0627-00986-00253)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Peter Carrolo | 69 | Head | — | Italy |
| 42 | Frances Carrolo | 51 | Wife | — | Italy |
| 43 | Dominic Carrolo | 22 | Son | Laborer | Illinois |
| 44 | Frank Carrolo | 16 | Son | New Worker | Illinois |
| 45 | Vincenza Cafarde | 84 | Mother in law | — | Italy |
| 46 | Dewey Purdue | 33 | Head | Laborer | Iowa |
| 47 | Lula Purdue | 24 | Wife | — | Iowa |
| 48 | Jacqueline Purdue | 4 | Daughter | — | Iowa |
| 49 | Della-Lou Purdue | 2 | Daughter | — | Iowa |
| 50 | John Palich | 53 | Head | Tavern Operator | Illinois |
| 51 | Catherine Palich | 51 | Wife | — | Illinois |
| 52 | Mike Palich | 25 | Son | Laborer | Illinois |
| 53 | Benjamin Klimes | 30 | Head | Brakeman | Illinois |
| 54 | Catherine Klimes | 29 | Wife | — | Illinois |
| 55 | Bernard Klimes | 7 | Son | — | Illinois |
| 56 | Christian Beiler | 48 | Head | Wiper | Denmark |
| 57 | Emma Beiler | 51 | Wife | — | New York |
| 58 | Christian Beiler | 19 | Son | Laborer | Illinois |
| 59 | Margaret Beiler | 18 | Daughter | Housekeeper | Illinois |
| 60 | James Beiler | 10 | Son | — | Illinois |
| 61 | Anna Pleshko | 44 | Head | Seamstress | Poland |
| 62 | Walter Pleshko | 20 | Son | Packer | Illinois |
| 63 | Evelyn Pleshko | 19 | Daughter | Counter Girl | Illinois |
| 64 | Louis F. Smith | 55 | Head | Machinist | Illinois |
| 65 | Naomi Smith | 47 | Wife | — | Wisconsin |
| 66 | Newell Smith | 19 | Son | New Worker | Wisconsin |
| 67 | Zora Smith | 18 | Daughter | New Worker | Wisconsin |
| 68 | Naomi Smith | 17 | Daughter | — | Illinois |
| 69 | Calvin Smith | 13 | Son | — | Illinois |
| 70 | Doris Smith THIS PERSON | 10 | Daughter | — | Illinois |
| 71 | Hope Smith | 8 | Daughter | — | Illinois |
| 72 | Girard Smith | 7 | Son | — | Illinois |
| 73 | Judith Smith | 5 | Daughter | — | Illinois |
| 74 | Harry Hoffman | 55 | Head | Tailor | Russia |
| 75 | Rae Hoffman | 48 | Wife | — | Russia |
| 76 | Sadie Gottler | 51 | Lodger | Domestic | Russia |
| 77 | Phillip Kee | 24 | Head | Center | Illinois |
| 78 | Catherine Kee | 53 | Mother | — | Poland |
| 79 | Helen Kee | 27 | Sister | Millener | Illinois |
| 80 | Mildred Kee | 10 | Sister | — | 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)