AC
Annie Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Annie Cooper across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1867), then head of a 3-person household.
Age 73
b. ~1867
Female
Spouse
Born: Oregon
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Cooper |
| Given Name | Annie |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Altadena |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Altadena |
| Est. Birth Year | ~1867 |
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 Annie | Age | Birth yr |
|---|---|---|---|---|
| Lloyd Cooper | Son | — | 48 | ~1892 |
| Charles Cooper | Head | — | 74 | ~1866 |
| Annie Cooper | Spouse | — | 73 | ~1867 |
Census Appearances
1920
Los Angeles, …
Spouse, age 52
Los Angeles, California · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Annie M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Oregon |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Los Angeles, …
Spouse, age 63
Los Angeles, California · implied b. ~1867 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Annie M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Oregon |
| Age at First Marriage | 25 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Los-Angeles-County, California
Spouse, age 73
Los-Angeles-County, California · implied b. ~1867 — 3 household members
| Surname | Cooper |
| Given Name | Annie |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Altadena |
| 1935 Residence (County) | Los Angeles |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Annie Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Annie Cooper
Spouse · 1940 · age 73 · b. ~1867 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00244-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | D. Blanche Jackson | 55 | wife | — | Illinois |
| 2 | Catherine Jackson | 21 | daughter | — | Illinois |
| 3 | Ret A Alter | 44 | head | Owner And Manager | Pennsylvania |
| 4 | Irene W Alter | 44 | wife | — | California |
| 5 | Robert Alter | 14 | son | — | California |
| 6 | R. C. Bradshaw | 36 | head | Agent And Salesman | New York |
| 7 | Eleanor D Bradshaw | 60 | wife | — | New York |
| 8 | Byron W Duckrow | 76 | head | — | Massachusetts |
| 9 | Annie A Duckrow | 73 | wife | — | Wisconsin |
| 10 | Walter G Pennecker | 60 | head | Contractor | Michigan |
| 11 | Margaret A Pennecker | 58 | wife | — | California |
| 12 | Charles W Cooper | 74 | head | — | Oregon |
| 13 | Annie Cooper THIS PERSON | 73 | wife | — | Oregon |
| 14 | Lloyd C Cooper | 48 | son | Horticulturist | Oregon |
| 15 | Ernest F Tilbury | 50 | head | Practitioner | England |
| 16 | Helen M Tilbury | 38 | wife | — | California |
| 17 | Edward Tilbury | 14 | son | — | Colorado |
| 18 | Gordon Tilbury | 12 | son | — | Colorado |
| 19 | Norman Tilbury | 6 | son | — | California |
| 20 | David Tilbury | 2 | son | — | California |
| 21 | Gus Tilbury | 20 | nephew | Cannery Clerk | Philippines |
| 22 | Peter Charlton | 40 | head | Investment Banker | England |
| 23 | Mabel Lee Charlton | 40 | wife | — | Texas |
| 24 | Richard Heimann | 28 | head | Optician | Pasadena |
| 25 | Sara D Heimann | 28 | wife | — | Illinois |
| 26 | Richard Heimann | 3 | son | — | California |
| 27 | Sally Heimann | 0 | daughter | — | California |
| 28 | Amelia Eichhorst | 60 | maid | Maid | Minnesota |
| 29 | Charles E Johnson | 72 | head | Artist | California |
| 30 | Maud V Johnson | 72 | wife | — | Wisconsin |
| 31 | Helen Alma Johnson | 50 | daughter | — | Illinois |
| 32 | Everett Johnson | 23 | son | Photographer | California |
| 33 | Jack Sutcliffe | 39 | head | Insurance Adjuster | Nebraska |
| 34 | Marie W Sutcliffe | 36 | wife | — | Utah |
| 35 | Jane Sutcliffe | 7 | daughter | — | Washington |
| 36 | Deanne Sutcliffe | 5 | daughter | — | Washington |
| 37 | Lula Mcmichael | 70 | head | — | Texas |
| 38 | Elvira Van Arsinge | 40 | head | Teacher | California |
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)