RF
Robert Foster — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Robert Foster across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents Mayme & Frank — first a head (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Foster |
| Given Name | Robert John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Proprietor |
| Industry | Gas Station |
| Class of Worker | OA |
| Hours Worked | 78 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Proprietor |
| Township / Ward | Clinton City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Jean Foster | Daughter | — | 1 | ~1939 |
| Janice Foster | Daughter | — | ~1940 | |
| Robert Foster | Head | — | 25 | ~1915 |
| Betty Foster | Spouse | — | 19 | ~1921 |
Census Appearances
1920
Clinton, Iowa
Son, age 6
Clinton, Iowa · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Son, age 15
Clinton, Iowa · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Head, age 25
Clinton-County, Iowa · implied b. ~1915 — 4 household members
| Surname | Foster |
| Given Name | Robert John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Proprietor |
| Industry | Gas Station |
| Class of Worker | OA |
| Hours Worked | 78 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Robert Foster across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mayme Foster (~0.92 confidence) and father Frank Foster (~0.92 confidence) and father Robert Foster (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mayme Foster
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
Frank Foster
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Robert Foster
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Foster
Head · 1940 · age 25 · b. ~1915 · Iowa
★ 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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01150-00593)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jay Maibel | 40 | Head | Fireman | Illinois |
| 42 | Josephine Maibel | 38 | Wife | — | Iowa |
| 43 | John Maibel | 17 | Son | — | Iowa |
| 44 | Gloria Maibel | 12 | Daughter | — | Iowa |
| 45 | William G. Mcallister | 32 | Head | Serviceman | Iowa |
| 46 | Gayle Mcallister | 28 | Wife | — | Iowa |
| 47 | Joyce Mcallister | 5 | Daughter | — | Iowa |
| 48 | Richard Mcallister | 3 | Son | — | Iowa |
| 49 | Bernice Lloyd | 35 | Head | School Teacher | Iowa |
| 50 | Maude Christman | 72 | Cousin | — | Illinois |
| 51 | Cathrine A. Donley | 68 | Head | — | Iowa |
| 52 | — | None | — | — | — |
| 53 | Peter Olsen | 81 | Head | — | Sweden |
| 54 | Joseph P. Taber | 74 | Lodger | — | Canada |
| 55 | Carl Underseen | 39 | Head | Laborer | Germany |
| 56 | Anne D. Underseen | 37 | Wife | — | Germany |
| 57 | Edgar Underseen | 14 | Son | — | Iowa |
| 58 | Herbert Henry Underseen | 9 | Son | — | Iowa |
| 59 | Robert John Foster THIS PERSON | 25 | Head | Proprietor | Iowa |
| 60 | Betty Jane Foster | 19 | Wife | — | Iowa |
| 61 | Jean Foster | 1 | Daughter | — | Iowa |
| 62 | Janice Foster | 0 | Daughter | — | Iowa |
| 63 | Bert Rupert | 50 | Head | Meat Cutter | Iowa |
| 64 | Catherine Rupert | 48 | Wife | — | Iowa |
| 65 | Catherine Rupert | 20 | Daughter | Secretary | Iowa |
| 66 | Harold Outzen | 26 | Head | Electrician | Iowa |
| 67 | Doris Outzen | 24 | Wife | — | Iowa |
| 68 | Imogene Outzen | 2 | Daughter | — | Iowa |
| 69 | Ralph Outzen | 1 | Son | — | Iowa |
| 70 | Amos H. Appleby | 59 | Head | Janitor | Illinois |
| 71 | Letta C. Appleby | 48 | Wife | — | Iowa |
| 72 | Wilma Appleby | 15 | Daughter | — | Iowa |
| 73 | Nada Appleby | 14 | Daughter | — | Iowa |
| 74 | Clarence C. Benson | 38 | Head | Mechanic | Iowa |
| 75 | Bernice A. Benson | 33 | Wife | — | Iowa |
| 76 | Robert A. Benson | 9 | Son | — | Iowa |
| 77 | Dwight Mitchell | 30 | Head | Truck Driver | Iowa |
| 78 | Marie Mitchell | 25 | Wife | — | Iowa |
| 79 | Alice May Mitchell | 3 | Daughter | — | Iowa |
| 80 | Albert Holm | 56 | Head | Checker | Iowa |
Pedigree Summary
Robert
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)