DC
Dorothy Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Dorothy Cooper across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents A & Hamilton — first a daughter (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | office clerk |
| Industry | gas and electric company |
| Class of Worker | PW |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Office Clerk |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Florence Cooper | Spouse | — | 55 | ~1885 |
| A Cooper | Head | — | 58 | ~1882 |
| Dorothy Cooper | Daughter | — | 32 | ~1908 |
Census Appearances
1920
Jefferson, Kentucky
Other, age 11
Jefferson, Kentucky · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | Step-dau |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 21
Jefferson, Kentucky · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Dorothy E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Bill Clerk |
| Industry | Gas & Electric Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 32
Jefferson-County, Kentucky · implied b. ~1908 — 3 household members
| Surname | Cooper |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | office clerk |
| Industry | gas and electric company |
| Class of Worker | PW |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 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 Dorothy Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father A Cooper (~0.92 confidence) and father Hamilton Cooper (~0.92 confidence) and mother Isabella Cooper (~0.81 confidence) and mother Florence Cooper (~0.92 confidence). The pedigree spans 2 generations with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
A Cooper
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Hamilton Cooper
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Isabella Cooper
b. ~1866
Source father>mother
● Household
· direct · ~0.81
Mother
Florence Cooper
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Cooper
Daughter · 1940 · age 32 · b. ~1908 · Kentucky
★ You are viewing this record
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-t0627-01370-00431)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Milton C Barran | 38 | head | Salesman | Ohio |
| 42 | Henrietta H Barran | 37 | wife | — | Virginia |
| 43 | William Mellon | 27 | head | Lawyer | Alabama |
| 44 | Virginia W Mellon | 22 | wife | — | Kentucky |
| 45 | John D Otter | 69 | head | Building Manager | Kentucky |
| 46 | Edith L Wintersmith | 58 | head | — | Virginia |
| 47 | Emma Pauline Vallit | 59 | lodger | Teacher | France |
| 48 | Gilda Hill | 54 | maid | Maid | Tennessee |
| 49 | Ray S Ferguson | 43 | head | Salesman | Florida |
| 50 | Jeanne Ferguson | 42 | wife | — | West Virginia |
| 51 | Alberta Harrison | 29 | lodger | Saleslady | Kentucky |
| 52 | A. Hamilton Cooper | 58 | head | Salesman | Kentucky |
| 53 | Florence Cooper | 55 | wife | — | Kentucky |
| 54 | Dorothy Cooper THIS PERSON | 32 | daughter | Office Clerk | Kentucky |
| 55 | Raymond H Clark | 42 | head | Salesman | Ohio |
| 56 | Susan M Clark | 41 | wife | — | Kentucky |
| 57 | Raymond H Jr Clark | 15 | son | — | Kentucky |
| 58 | Elise Clark | 4 | daughter | — | Kentucky |
| 59 | Sunie Clark | 16 | daughter | — | Kentucky |
| 60 | Sarah Smock | 45 | maid | Maid | Kentucky |
| 61 | William W Gregg | 68 | head | — | Kentucky |
| 62 | Grace E Gregg | 57 | wife | — | Kentucky |
| 63 | Mary E Kurr | 62 | sister-in-law | Bookkeeper | Kentucky |
| 64 | Julia Pearson | 61 | sister-in-law | — | Kentucky |
| 65 | Frank M Cahill | 55 | head | Grocery Clerk | Kentucky |
| 66 | Blanche Cahill | 47 | wife | — | Kentucky |
| 67 | Robert Cahill | 50 | brother | Foreman | Kentucky |
| 68 | Mary B Cahill | 21 | daughter | — | Kentucky |
| 69 | Florence Cahill | 56 | sister | Stenographer | Kentucky |
| 70 | John Kennedy | 48 | head | Tax Collector | Kentucky |
| 71 | Anna B Kennedy | 43 | wife | — | Kentucky |
| 72 | Jane B Kennedy | 22 | daughter | — | Kentucky |
| 73 | Kay Kennedy | 8 | daughter | — | Kentucky |
| 74 | Louise Burks | 29 | lodger | Saleslady | Tennessee |
| 75 | John G. A. Boyd | 74 | head | Salesman | Kentucky |
| 76 | Sue Ella Boyd | 71 | wife | — | Kentucky |
| 77 | Margaret Boyd | 48 | daughter | Antique Dealer | Kentucky |
| 78 | Marly F Boyd | 33 | daughter | Saleslady | Kentucky |
| 79 | Louise B Lewis | 51 | daughter | Assistant Manager For Apartment House | Kentucky |
| 80 | Ben F Offutt | 52 | lodger | Salesman | Kentucky |
Pedigree Summary
Dorothy
Gen 1 · 3 parents
~0.92
Gen 2 · 1 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)