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Helen Foster — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pima-County, Arizona
Our Model Tree links this Helen Foster across the 1920, 1930 and 1940 US Censuses in Pima-County, Arizona (XGBoost, ~Confirmed), with identified parents George & Nina — first a daughter (b.~1913), then head of a 2-person household.
Age 27
b. ~1913
Female
Daughter
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pima-County, Arizona |
| Surname | Foster |
| Given Name | Helen R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Tucson City |
| 1935 Residence (County) | Pima |
| Additional Details | |
| Occupation | Public School |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 36 |
| Income (1939) | 1400 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Occupation | Public School |
| Township / Ward | Tucson City |
| Est. Birth Year | ~1913 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Una Foster | Head | — | 49 | ~1891 |
| Helen Foster | Daughter | — | 27 | ~1913 |
Census Appearances
1920
Pima, Arizona
Daughter, age 7
Pima, Arizona · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Helen G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Alabama |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1930
Pima, Arizona
Daughter, age 17
Pima, Arizona · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Helen R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Arizona |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Pima-County, Arizona
Daughter, age 27
Pima-County, Arizona · implied b. ~1913 — 2 household members
| Surname | Foster |
| Given Name | Helen R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Tucson City |
| 1935 Residence (County) | Pima |
| Occupation | Public School |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 36 |
| Income (1939) | 1400 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 George Foster (~0.92 confidence) and mother Nina Foster (~0.92 confidence) and mother Nina Foster (~0.92 confidence) and mother Una Foster (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Foster
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Nina Foster
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Nina Foster
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Una Foster
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Foster
Daughter · 1940 · age 27 · b. ~1913 · Arizona
★ 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 — Pima-County, Arizona
Open full size
1940 US Federal Census — Pima-County, Arizona
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-00111-00368)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lawrence E. Halladay | 46 | Head | Title Attorney | Arizona |
| 42 | Rowena L. Halladay | 41 | Wife | — | Arizona |
| 43 | Merna L. Halladay | 20 | Son | — | Arizona |
| 44 | La Ver Halladay | 16 | Daughter | — | Arizona |
| 45 | Gale Halladay | 12 | Son | — | Arizona |
| 46 | Beth Halladay | 10 | Daughter | — | Arizona |
| 47 | Spencer Halladay | 7 | Son | — | Arizona |
| 48 | Helen Hunt | 35 | Head | Teacher | Iowa |
| 49 | Una R. Foster | 49 | Head | — | Arizona |
| 50 | Helen R. Foster THIS PERSON | 27 | Daughter | Public School | Arizona |
| 51 | Sedonia E. Walgenbach | 25 | Head | Supervisor | Wisconsin |
| 52 | Jack Ross | 47 | Head | Patrolman | New York |
| 53 | Viola H. Ross | 37 | Wife | Graduate Nurse | Iowa |
| 54 | C. Jerome Skipton | 60 | Head | — | Iowa |
| 55 | Adelaide Skipton | 62 | Wife | — | Iowa |
| 56 | Malcolm D. Campbell | 36 | Son-in-law | Salesman | Pennsylvania |
| 57 | Vivian Campbell | 34 | Daughter | — | Iowa |
| 58 | Burton J. Campbell | 7 | Grandson | — | Arizona |
| 59 | Clarence C. Watson | 45 | Head | — | Ohio |
| 60 | Florence S. Watson | 42 | Wife | — | Indiana |
| 61 | William S. Barnes | 37 | Head | Teacher | North Carolina |
| 62 | Eugenia T. Barnes | 29 | Wife | — | North Carolina |
| 63 | Roscoe Johnston | 64 | Head | Operator | Missouri |
| 64 | Catherine Johnston | 20 | Daughter | — | Arkansas |
| 65 | Roscoe Jr. Johnston | 14 | Son | — | Arkansas |
| 66 | Harold T. Wooton | 29 | Lodger | — | Maryland |
| 67 | Laura B. Harne | 66 | Head | — | West Virginia |
| 68 | Frankie G. Harne | 42 | Daughter | — | Oklahoma |
| 69 | Hazel G. Harne | 35 | Daughter | Stenography | Oklahoma |
| 70 | Ralph Scadix | 45 | Head | Auto Mechanic | Iowa |
| 71 | Anna W. Hiedler | 57 | Head | — | Ohio |
| 72 | Mary F. Hiedler | 19 | Daughter | — | Ohio |
| 73 | Robert J. Moody | 25 | Head | Teacher | Montana |
| 74 | Elizabeth M. Moody | 21 | Wife | — | Missouri |
| 75 | Wm. Edward Mcenere | 65 | Head | Watchman | Missouri |
Pedigree Summary
Helen
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)