HC
Helen Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Helen Cook across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents William & Minnie — first a daughter (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Cook |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | stenographer |
| Industry | wholesale hardware |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 700 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Stenographer |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Ruth Cook | Daughter | — | 19 | ~1921 |
| Amelia Cook | Spouse | — | 45 | ~1895 |
| Helen Cook | Daughter | — | 21 | ~1919 |
| Frank Cook | Head | — | 50 | ~1890 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 1
Jefferson, Kentucky · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Helen M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 11
Jefferson, Kentucky · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 21
Jefferson-County, Kentucky · implied b. ~1919 — 4 household members
| Surname | Cook |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | stenographer |
| Industry | wholesale hardware |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 700 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Helen Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Cook (~0.80 confidence) and mother Minnie Cook (~0.80 confidence) and mother Minnie Cook (~0.80 confidence) and father Frank Cook (~0.92 confidence) and mother Amelia Cook (~0.92 confidence) and mother Amelia Cook (~0.92 confidence) and father Frank Cook (~0.92 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
William Cook
b. ~1865
Source father>father
● Household
· direct · ~0.8
Mother
Minnie Cook
b. ~1868
Source father>mother
● Household
· direct · ~0.8
Mother
Minnie Cook
b. ~1869
Source father>mother
● Household
· direct · ~0.8
Father
Frank Cook
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Amelia Cook
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Amelia Cook
b. ~1895
Source mother
● Household
· direct · ~0.92
Father
Frank Cook
b. ~1897
Source father
● Household
· direct · ~0.92
This person
Anchor record
Helen Cook
Daughter · 1940 · age 21 · b. ~1919 · Kentucky
★ You are viewing this record
Sibling
Ruth Cook
Sibling · 1940 · age 19
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01372-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha E. Huermann | 9 | daughter | — | Kentucky |
| 42 | Edward A. Huermann | 5 | son | — | Kentucky |
| 43 | Clarence Moore | 48 | head | Gas Department Foreman | Kentucky |
| 44 | Gladys Moore | 41 | wife | — | Kentucky |
| 45 | Chelsie C. Blair | 32 | head | Milk Driver | Kentucky |
| 46 | Joyce Blair | 30 | wife | — | Kentucky |
| 47 | Douglas Blair | 6 | son | — | Kentucky |
| 48 | Robert Blair | 5 | son | — | Kentucky |
| 49 | Kenneth Blair | 2 | son | — | Kentucky |
| 50 | Howard O. Mitchell | 41 | head | Steam Hammer Operator | Kentucky |
| 51 | Irene E. Mitchell | 37 | wife | — | Kentucky |
| 52 | Howard O. Jr. Mitchell | 18 | son | Apprentice Dental Technician | Kentucky |
| 53 | Gerald E. Mitchell | 15 | son | Delivery Route | Kentucky |
| 54 | Joe M. Craddock | 58 | head | Watchman | Kentucky |
| 55 | Vera Craddock | 52 | wife | — | Kentucky |
| 56 | Charles Craddock | 31 | son | Foreman-Buyer | Kentucky |
| 57 | Frank B. Cook | 50 | head | Printer | Kentucky |
| 58 | Amelia R. Cook | 45 | wife | — | Kentucky |
| 59 | Helen Cook THIS PERSON | 21 | daughter | Stenographer | Kentucky |
| 60 | Ruth Cook | 19 | daughter | Bookkeeper | Kentucky |
| 61 | Lillie L. White | 70 | head | — | Kentucky |
| 62 | Edward J. Ryan | 62 | head | Stock Foreman | Missouri |
| 63 | Flora Ryan | 59 | wife | — | Kentucky |
| 64 | William J. Ryan | 30 | son | Policeman-Detective | Kentucky |
| 65 | Mary E. Ryan | 24 | daughter | — | Kentucky |
| 66 | Mildred Ryan | 19 | daughter | Clerical Typist | Kentucky |
| 67 | Jacob L. Jr. Schmidt | 37 | head | Stenographer | Kentucky |
| 68 | Mabelle M. Schmidt | 39 | wife | Safety Inspector | Kentucky |
| 69 | Margaret Thornbury | 62 | mother-in-law | — | Indiana |
| 70 | Harry Baker | 70 | head | Automobile Salesman | New York |
| 71 | Hattie Baker | 63 | wife | — | Kentucky |
| 72 | Clarence Zimlach | 38 | head | Brass Finisher | Kentucky |
| 73 | Catherine Zimlach | 33 | wife | — | Kentucky |
| 74 | Thomas W. Zimlach | 2 | son | — | Kentucky |
| 75 | Josephine Zimlach | 43 | head | Inspector | Kentucky |
| 76 | Walter Rotheimer | 45 | head | Engine Carpenter | Kentucky |
| 77 | Teresa Rotheimer | 44 | wife | — | Kentucky |
| 78 | William L. Fryrear | 53 | head | Boilermaker | Kentucky |
| 79 | Julia L. Fryrear | 47 | wife | — | Kentucky |
| 80 | Gustave L. Fryrear | 22 | son | Dental Technician | Kentucky |
Related Census Records
Pedigree Summary
Helen + 1 sibling
Gen 1 · 4 parents
~0.92
Gen 2 · 3 grandparents
~0.81
Max depth 4 (1900–1950 window)
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)