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Helen Foster — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Diego, California
Our Model Tree links this Helen Foster across the 1920, 1930 and 1940 US Censuses in San Diego, California (XGBoost, ~Confirmed), with identified parents Ralph & Arthur — first a daughter (b.~1917), then head of a 6-person household.
Age 13
b. ~1917
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Diego, California |
| Surname | Foster |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Canada-English |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | El Cajon Township Part |
| Est. Birth Year | ~1917 |
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 1930 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Alice Foster | Other | — | 41 | ~1889 |
| Raymond Foster | Son | — | 11 | ~1919 |
| Ralph Foster | Head | — | 40 | ~1890 |
| Mildred Foster | Daughter | — | 16 | ~1914 |
| Helen Foster | Daughter | — | 13 | ~1917 |
| Gordon Foster | Son | — | 15 | ~1915 |
Census Appearances
1920
San Diego, …
Daughter, age 3
San Diego, California · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Helen L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Canada |
| Occupation | none |
| Mother Tongue | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Diego, …
Daughter, age 13
San Diego, California · implied b. ~1917 — 6 household members
| Surname | Foster |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Canada-English |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Spouse, age 24
San-Diego-County, California · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Hazel M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | El Cajon City |
| 1935 Residence (County) | San Diego |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 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 Foster across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ralph Foster (~0.92 confidence) and father Arthur Foster (~0.85 confidence) and mother Harriet Foster (~0.85 confidence) and mother Alice Foster (~0.92 confidence). The pedigree spans 2 generations with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
Ralph Foster
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Arthur Foster
b. ~1858
Source father>father
● Household
· direct · ~0.85
Mother
Harriet Foster
b. ~1853
Source father>mother
● Household
· direct · ~0.85
Mother
Alice Foster
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Foster
Daughter · 1930 · age 13 · b. ~1917 · California
★ You are viewing this record
Sibling
Mildred Foster
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Foster
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Foster
Sibling · 1930 · age 15
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
1930 US Federal Census — San Diego, California
Open full size
1930 US Federal Census — San Diego, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel190:0102)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry H. Reisinger | 17 | Boarder | Laborer | Illinois |
| 52 | Roy Silvis | 34 | Head | Laborer | Kansas |
| 53 | Florence P. Silvis | 30 | Wife-H | None | Indiana |
| 54 | Anna-May Silvis | 3 | Daughter | None | California |
| 55 | Frances P. Silvis | 2 | Daughter | None | California |
| 56 | John L. Lewis | 72 | Head | Farmer | Missouri |
| 57 | Carrie A. Lewis | 67 | Wife-H | None | Ohio |
| 58 | Harold B. Lewis | 34 | Head | Salesman | Missouri |
| 59 | Irah L. Lewis | 38 | Wife-H | None | Kansas |
| 60 | Harold T. Lewis | 5 | Son | None | California |
| 61 | James L. Lewis | 3 | Son | None | California |
| 62 | Guy L. Stephens | 42 | Head | Farmer | Missouri |
| 63 | Edna L. Stephens | 41 | Wife-H | None | Missouri |
| 64 | Ralph Foster | 40 | Head | Dairyman | Colorado |
| 65 | Alice E. Foster | 41 | Wife-H | None | Canada-English |
| 66 | Mildred M. Foster | 16 | Daughter | None | California |
| 67 | Gordon E. Foster | 15 | Son | None | California |
| 68 | Helen E. Foster THIS PERSON | 13 | Daughter | None | California |
| 69 | Raymond F. Foster | 11 | Son | None | California |
| 70 | Alvin A. Trusheim | 41 | Head | Farmer | California |
| 71 | Quantrell Hendricks | 47 | Head | Milker | Oklahoma |
| 72 | Lila Hendricks | 38 | Wife-H | None | Oklahoma |
| 73 | Freda Hendricks | 15 | Daughter | None | Oklahoma |
| 74 | Imogene Hendricks | 13 | Daughter | None | Oklahoma |
| 75 | Trial Hendricks | 10 | Son | None | Oklahoma |
| 76 | Mildred Hendricks | 8 | Daughter | None | Oklahoma |
| 77 | Harold S. Kibbey | 42 | Head | Retail Merchant | Iowa |
| 78 | Florence W. Kibbey | 44 | Wife-H | None | Massachusetts |
| 79 | Barbara E. Kibbey | 17 | Daughter | None | Oregon |
| 80 | June F. Walker | 75 | Mother-in-law | None | England |
| 81 | Jacob M. James | 73 | Head | Horticulturalist | Ohio |
| 82 | John M. Mcfarland | 66 | Head | Farmer | Kentucky |
| 83 | Chester R. Wacht | 28 | Head | Milker | Colorado |
| 84 | Rozetta Wacht | 24 | Wife-H | None | Oklahoma |
| 85 | Harold T. Wacht | 24 | Brother | Laborer | Colorado |
| 86 | Frank G. Sisemore | 20 | Cousin | Milker | Colorado |
| 87 | John L. Johnson | 41 | Head | Broker | Michigan |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Pedigree Summary
Helen + 3 siblings
Gen 1 · 2 parents
~0.92
Gen 2 · 2 grandparents
~0.85
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)