AC
Anna Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Potter-County, South Dakota
Our Model Tree links this Anna Cooper across the 1920, 1930 and 1940 US Censuses in Potter-County, South Dakota (XGBoost, ~Confirmed), with identified parents James & Louis — first a daughter (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Potter-County, South Dakota |
| Surname | Cooper |
| Given Name | Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Lebanon Town |
| 1935 Residence (County) | Potter |
| Additional Details | |
| Occupation | Servant |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 156 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Servant |
| Township / Ward | Lebanon Town |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Anna | Age | Birth yr |
|---|---|---|---|---|
| Paul Cooper | Son | — | 23 | ~1917 |
| Clarence Cooper | Son | — | 21 | ~1919 |
| Anna Cooper | Daughter | — | 25 | ~1915 |
| Mary Cooper | Spouse | — | 47 | ~1893 |
| Loretta Cooper | Daughter | — | 15 | ~1925 |
| Mildred Cooper | Daughter | — | 13 | ~1927 |
| Louis Cooper | Head | — | 52 | ~1888 |
Census Appearances
1920
Potter, South …
Daughter, age 5
Potter, South Dakota · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Anita |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Potter, South …
Daughter, age 15
Potter, South Dakota · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Potter-County, South …
Daughter, age 25
Potter-County, South Dakota · implied b. ~1915 — 7 household members
| Surname | Cooper |
| Given Name | Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Lebanon Town |
| 1935 Residence (County) | Potter |
| Occupation | Servant |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 156 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Anna Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Cooper (~0.92 confidence) and father Louis Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Cooper
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Louis Cooper
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Anna Cooper
Daughter · 1940 · age 25 · b. ~1915 · South Dakota
★ You are viewing this record
Sibling
Clarence Cooper
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Cooper
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Cooper
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Cooper
Sibling · 1940 · age 13
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 — Potter-County, South Dakota
Open full size
1940 US Federal Census — Potter-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03866-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arlyn Miles | 1 | Son | — | South Dakota |
| 42 | Monica Miles | 13 | Daughter | — | South Dakota |
| 43 | Darling Miles | 10 | Son | — | South Dakota |
| 44 | Floyd Miles | 4 | Son | — | South Dakota |
| 45 | Rose Marie Miles | 3 | Daughter | — | South Dakota |
| 46 | Arleen Miles | 2 | Daughter | — | South Dakota |
| 47 | Adolph Bubl | 53 | Head | Laborer | Wisconsin |
| 48 | Erna Bubl | 26 | Wife | — | Wisconsin |
| 49 | John Bubl | 10 | Son | — | Wisconsin |
| 50 | Daniel Bubl | 8 | Son | — | Wisconsin |
| 51 | Eugene Bubl | 6 | Son | — | South Dakota |
| 52 | Veronica Bubl | 4 | Daughter | — | South Dakota |
| 53 | William Ellenbecker | 51 | Head | Foreman | South Dakota |
| 54 | Vera Ellenbecker | 42 | Wife | — | Minnesota |
| 55 | Verne Ellenbecker | 20 | Son | Trucker & Road Improvement | South Dakota |
| 56 | Nina Nelson | 62 | Head | — | Minnesota |
| 57 | Louis Cooper | 52 | Head | Laborer | South Dakota |
| 58 | Mary Cooper | 47 | Wife | — | South Dakota |
| 59 | Anna Cooper THIS PERSON | 25 | Daughter | Servant | South Dakota |
| 60 | Paul Cooper | 23 | Son | Janitor | South Dakota |
| 61 | Clarence Cooper | 21 | Son | Farm Hand | South Dakota |
| 62 | Loretta Cooper | 15 | Daughter | — | South Dakota |
| 63 | Mildred Cooper | 13 | Daughter | — | South Dakota |
| 64 | Mary Edwards | 86 | Head | — | Illinois |
| 65 | Louisa Rock | 76 | Head | — | Germany |
| 66 | Flora Rock | 74 | Wife | — | Wisconsin |
| 67 | Adeline Heather | 50 | Head | Seamstress | Wisconsin |
| 68 | Joseph Heather | 16 | Son | — | South Dakota |
| 69 | Alfred Heather | 12 | Son | — | South Dakota |
| 70 | Nelle Schumacher | 47 | Head | Housekeeper | South Dakota |
| 71 | Paul Schumacher | 26 | Son | Proprietor | South Dakota |
| 72 | William Schumacher | 23 | Son | Barber | South Dakota |
| 73 | Florence Schumacher | 14 | Daughter | — | South Dakota |
| 74 | Royal Jackson | 81 | Head | — | Wisconsin |
| 75 | Anna Jackson | 82 | Wife | — | Minnesota |
| 76 | Lester Jackson | 54 | Son | Farm Hand | South Dakota |
| 77 | Ralph Wooldridge | 38 | Head | Janitor | Iowa |
| 78 | Nina Wooldridge | 36 | Wife | — | Iowa |
| 79 | Elsie Wooldridge | 14 | Daughter | — | South Dakota |
| 80 | Beverly Wooldridge | 11 | Daughter | — | South Dakota |
Pedigree Summary
Anna + 4 siblings
Gen 1 · 4 parents
~0.92
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)