HP
Helen Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Helen Peterson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Elmer & Viola — first a daughter (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Peterson |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | El Segundo City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | El Segundo City |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Ruth Peterson | Daughter | — | 6 | ~1934 |
| Frances Peterson | Daughter | — | 11 | ~1929 |
| Helen Peterson | Daughter | — | 20 | ~1920 |
| Louise Peterson | Daughter | — | 22 | ~1918 |
| Elmer Peterson | Head | — | 47 | ~1893 |
| Viola Peterson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Los Angeles, …
Daughter, age
Los Angeles, California · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | California |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Daughter, age 10
Los Angeles, California · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Helen E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Daughter, age 20
Los-Angeles-County, California · implied b. ~1920 — 6 household members
| Surname | Peterson |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | El Segundo City |
| 1935 Residence (County) | Los Angeles |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Peterson (~0.92 confidence) and mother Viola Peterson (~0.92 confidence) and mother Viola Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Peterson
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Viola Peterson
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Viola Peterson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Peterson
Daughter · 1940 · age 20 · b. ~1920 · California
★ You are viewing this record
Sibling
Louise Peterson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Peterson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Peterson
Sibling · 1940 · age 6
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00233-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lola Dee Long | 14 | daughter | — | California |
| 2 | James N. Gorham | 51 | head | Stillman | Kansas |
| 3 | Gladys Gorham | 45 | wife | Substitute Teacher | California |
| 4 | Glenn Al. Gorham | 21 | daughter | — | California |
| 5 | Barbara Gorham | 20 | daughter | — | California |
| 6 | Josephine Gorham | 17 | daughter | — | California |
| 7 | Thomas Gorham | 10 | son | — | California |
| 8 | Louis Fuender | 47 | head | Butcher | California |
| 9 | Elsie Fuender | 46 | wife | — | Missouri |
| 10 | William Fuender | 17 | son | — | California |
| 11 | William F. Walker | 64 | head | Gardener | Canada-English |
| 12 | Nellie E. Walker | 60 | wife | — | Canada-English |
| 13 | Ross M. Davis | 38 | head | Custodian | Michigan |
| 14 | Mabel Davis | 35 | wife | — | Michigan |
| 15 | John Sweeney | 49 | head | Laborer | California |
| 16 | Gertrude Sweeney | 52 | wife | — | Canada-English |
| 17 | Edwin Hamilton | 26 | head | Lofter | California |
| 18 | Nellie Hamilton | 24 | wife | — | California |
| 19 | Robert Hamilton | 1 | son | — | California |
| 20 | Leonard Whipple | 32 | head | Fire Inspector | Montana |
| 21 | Mary Whipple | 23 | wife | — | Colorado |
| 22 | John Whipple | 2 | son | — | California |
| 23 | Robert C. Campbell | 51 | head | Pipefitter | Iowa |
| 24 | Naomi Campbell | 42 | wife | — | Wyoming |
| 25 | Richard Campbell | 20 | son | Laborer | California |
| 26 | Lois Campbell | 18 | daughter | — | California |
| 27 | Ellen Campbell | 17 | daughter | — | California |
| 28 | Edward L. Innes | 59 | head | — | Missouri |
| 29 | Pearl Innes | 58 | wife | — | Illinois |
| 30 | Margaret C. Blackman | 35 | daughter | Bookkeeper | Illinois |
| 31 | Arthur F. Blackman | 39 | son-in-law | Manager | New Jersey |
| 32 | Elmer R. Peterson | 47 | head | Electrician | Nebraska |
| 33 | Viola Peterson | 45 | wife | — | California |
| 34 | Louise Peterson | 22 | daughter | Telephone Operator | California |
| 35 | Helen Peterson THIS PERSON | 20 | daughter | — | California |
| 36 | Frances Peterson | 11 | daughter | — | California |
| 37 | Ruth Peterson | 6 | daughter | — | California |
| 38 | Charles C. Dunn | 26 | head | Painter Helper | California |
| 39 | Adela Dunn | 23 | wife | — | Canada-English |
| 40 | Janet Dunn | 1 | daughter | — | California |
Related Census Records
Pedigree Summary
Helen + 3 siblings
Gen 1 · 3 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)