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Della Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Della Smith across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 10-person household.
Age 18
b. ~1922
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Della Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | New Worker |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1922 |
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 Della | Age | Birth yr |
|---|---|---|---|---|
| William Smith | Son | — | 15 | ~1925 |
| Lawrence Smith | Son | — | 10 | ~1930 |
| Christine Smith | Daughter | — | 1 | ~1939 |
| Mildred Smith | Daughter | — | 3 | ~1937 |
| Morris Smith | Son | — | 12 | ~1928 |
| Della Smith | Daughter | — | 18 | ~1922 |
| Morris Smith | Head | — | 37 | ~1903 |
| Mary Smith | Daughter | — | 4 | ~1936 |
| Lue Smith | Spouse | — | 37 | ~1903 |
| Herman Smith | Son | — | 9 | ~1931 |
Census Appearances
1930
Cook, Illinois
Daughter, age 7
Cook, Illinois · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Dellamae |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Cook-County, Illinois
Daughter, age 18
Cook-County, Illinois · implied b. ~1922 — 10 household members
| Surname | Smith |
| Given Name | Della Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Della Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Della Smith
Daughter · 1940 · age 18 · b. ~1922 · Illinois
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Sibling
Lawrence Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Smith
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Smith
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Smith
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herman Smith
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Smith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christine Smith
Sibling · 1940 · age 1
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-t0627-00977-00637)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Evelyn Hudson | 36 | Head | House Maid | Louisiana |
| 2 | James Hudson | 15 | Son | — | Louisiana |
| 3 | Birdie Richardson | 28 | Sister | Housework | Louisiana |
| 4 | James Richardson | 8 | Nephew | — | Illinois |
| 5 | Richard Richardson | 10 | Nephew | — | Illinois |
| 6 | Ollie Hatcher | 44 | Head | Laborer | South Carolina |
| 7 | Martha Hatcher | 38 | Wife | — | Louisiana |
| 8 | Alberta Sims | 29 | Head | Seamstress | Georgia |
| 9 | Ike Sims | 27 | Brother | Bartender | Georgia |
| 10 | Theodore Sims | 16 | Brother | — | Georgia |
| 11 | Roberta Sims | 7 | Niece | — | Georgia |
| 12 | Seymore Ella Sims | 47 | Mother | — | Georgia |
| 13 | Morris Smith | 37 | Head | Common Laborer | Tennessee |
| 14 | Lue Maud Smith | 37 | Wife | — | Tennessee |
| 15 | Della Mae Smith THIS PERSON | 18 | Daughter | New Worker | Tennessee |
| 16 | William Smith | 15 | Son | — | Kentucky |
| 17 | Morris Jr. Smith | 12 | Son | — | Illinois |
| 18 | Lawrence Smith | 10 | Son | — | Illinois |
| 19 | Herman Smith | 9 | Son | — | Illinois |
| 20 | Mary Smith | 4 | Daughter | — | Illinois |
| 21 | Mildred Smith | 3 | Daughter | — | Illinois |
| 22 | Christine Smith | 1 | Daughter | — | Illinois |
| 23 | Sylvester Brown | 30 | Head | Plater | Illinois |
| 24 | Ruby Mitchell | 28 | Sister | Asst. Pantry Matron | Illinois |
| 25 | Edward Parks | 32 | Lodger | Molder'S Helper | Georgia |
| 26 | Lillian Carroll | 26 | Head | — | Illinois |
| 27 | John Carroll | 15 | Son | — | Illinois |
| 28 | Madrey Walker | 43 | Head | Laborer | Georgia |
| 29 | Estelle Walker | 48 | Wife | — | Georgia |
| 30 | John Foster | 40 | Head | Laborer | Alabama |
| 31 | Sarah Foster | 19 | Daughter | — | Alabama |
| 32 | More Williams | 35 | Lodger | — | Alabama |
| 33 | Eugene Williams | 8 | Son | — | Alabama |
| 34 | Mamie Howell | 30 | Head | — | West Virginia |
| 35 | Lorraine Preston | 13 | Daughter | — | West Virginia |
| 36 | Basil Preston | 11 | Son | — | West Virginia |
| 37 | Charles Perry | 35 | Head | Porter | Tennessee |
| 38 | Samuel Estes | 33 | Lodger | Laborer | Tennessee |
| 39 | Nolen Steele | 35 | Lodger | Laborer | Kansas |
| 40 | William Mcdonald | 35 | Lodger | Molder Helper | Mississippi |
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)