DC
Dorothy Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Dorothy Cook across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Cook |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | Telephone Operator |
| Industry | Telephone Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 650 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Telephone Operator |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1918 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Wallace Cook | Head | — | 51 | ~1889 |
| John Cook | Son | — | 12 | ~1928 |
| Elizabeth Cook | Spouse | — | 47 | ~1893 |
| Gladys Cook | Daughter | — | 17 | ~1923 |
| Audrey Cook | Daughter | — | 9 | ~1931 |
| Dorothy Cook | Daughter | — | 22 | ~1918 |
| Gross Cook | Daughter | — | 23 | ~1917 |
| Thelma Cook | Daughter | — | 20 | ~1920 |
| Patricia Cook | Other | — | 3 | ~1937 |
Census Appearances
1930
St Louis, …
Daughter, age 12
St Louis, Missouri · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 22
St.-Louis-City-County, Missouri · implied b. ~1918 — 9 household members
| Surname | Cook |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Occupation | Telephone Operator |
| Industry | Telephone Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 650 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Dorothy Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Cook
Daughter · 1940 · age 22 · b. ~1918 · Missouri
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Sibling
Gladys Cook
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Cook
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Cook
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gross Cook
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cook
Sibling · 1940 · age 12
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 — St.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02203-00577)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harvey Schwartz | 21 | Lodger | Tele Clerk | Missouri |
| 42 | Milton Kline | 72 | Head | Stationary Engineer | Pennsylvania |
| 43 | Lillian Kline | 69 | Wife | — | Missouri |
| 44 | Charles Kline | 43 | Son | Cutter | Missouri |
| 45 | Lee Kline | 39 | Son | Booker | Missouri |
| 46 | Geraldine Kline | 22 | Granddaughter | Clerk | Missouri |
| 47 | Louis Wailes | 32 | Head | Foreman | Missouri |
| 48 | Catherine Wailes | 32 | Wife | — | Missouri |
| 49 | John Wailes | 5 | Son | — | Missouri |
| 50 | Janet Wailes | 3 | Daughter | — | Missouri |
| 51 | Martin Denker | 30 | Head | Cutter | Illinois |
| 52 | Garnet Denker | 29 | Wife | — | Illinois |
| 53 | Shirley Denker | 2 | Daughter | — | Missouri |
| 54 | Ralph Cade | 35 | Head | Barber | Illinois |
| 55 | Cecile Cade | 34 | Wife | — | Illinois |
| 56 | Bobby Cade | 8 | Son | — | Missouri |
| 57 | Rachel Kany | 74 | Head | — | Germany |
| 58 | Alois Kany | 33 | Son | Attendant | Missouri |
| 59 | John Kany | 30 | Son | Sheet Metal Worker | Missouri |
| 60 | Frank Hill | 60 | Head | Boxmaker | Missouri |
| 61 | Kate Hill | 52 | Wife | — | Missouri |
| 62 | Anna M. Hill | 10 | Daughter | — | Missouri |
| 63 | George Gross | 51 | Brother-in-law | Trucker | Missouri |
| 64 | Winston Walker | 28 | Head | Welder | Missouri |
| 65 | Margaret Walker | 25 | Wife | Packer | Missouri |
| 66 | John Ruppert | 65 | Head | Baker | Germany |
| 67 | Anna Ruppert | 64 | Wife | — | Missouri |
| 68 | Clarence Ruppert | 42 | Son | Steel Finisher | Missouri |
| 69 | John Ruppert | 29 | Son | Salesman | Missouri |
| 70 | Gertrude Watson | 73 | Head | — | England |
| 71 | Wallace Cook | 51 | Head | Bus Driver | Missouri |
| 72 | Elizabeth Cook | 47 | Wife | — | Missouri |
| 73 | Dorothy Cook THIS PERSON | 22 | Daughter | Telephone Operator | Missouri |
| 74 | Thelma Cook | 20 | Daughter | Floor Girl | Missouri |
| 75 | Gladys Cook | 17 | Daughter | — | Missouri |
| 76 | John Cook | 12 | Son | — | Missouri |
| 77 | Audrey Cook | 9 | Daughter | — | Missouri |
| 78 | Gross Winifred Cook | 23 | Daughter | — | Missouri |
| 79 | Patricia Cook | 3 | Granddaughter | — | Missouri |
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)