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Ruth Foster — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Ruth Foster across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 12-person household.
Age 20
b. ~1920
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Foster |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Saleslady |
| Industry | Retail Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 124 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Saleslady |
| Township / Ward | City Of Boston |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Eugenia Foster | Daughter | — | 16 | ~1924 |
| Joseph Foster | Son | — | 4 | ~1936 |
| Mary Foster | Daughter | — | 18 | ~1922 |
| William Foster | Head | — | 47 | ~1893 |
| Ruth Foster | Daughter | — | 20 | ~1920 |
| Rita Foster | Daughter | — | 23 | ~1917 |
| Mary Foster | Other | — | 50 | ~1890 |
| William Foster | Son | — | 22 | ~1918 |
| Edward Foster | Son | — | 10 | ~1930 |
| James Foster | Son | — | 12 | ~1928 |
| Raymond Foster | Son | — | 7 | ~1933 |
| Gertrude Foster | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 9
Suffolk, Massachusetts · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Ruth |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 20
Suffolk-County, Massachusetts · implied b. ~1920 — 12 household members
| Surname | Foster |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Saleslady |
| Industry | Retail Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 124 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Ruth Foster across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruth Foster
Daughter · 1940 · age 20 · b. ~1920 · Massachusetts
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Sibling
Mary Foster
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugenia Foster
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Foster
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Foster
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Foster
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Foster
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Foster
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Foster
Sibling · 1940 · age 7
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01657-00703)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dalous Lee | 39 | Head | Shipfitter Helper | Canada |
| 42 | Lorraine Lee | 19 | Daughter | Housework | Massachusetts |
| 43 | Robert Lee | 18 | Son | New Worker | Massachusetts |
| 44 | Louise Lee | 16 | Daughter | — | Virginia |
| 45 | Dalous Lee | 14 | Daughter | — | Virginia |
| 46 | Esther Lee | 13 | Daughter | — | Virginia |
| 47 | Bernard Lee | 12 | Son | — | Virginia |
| 48 | Alvin Lee | 10 | Son | — | Massachusetts |
| 49 | Mildred Lee | 6 | Son | — | Massachusetts |
| 50 | John Lee | 3 | Son | — | Massachusetts |
| 51 | James Boudreau | 64 | Father-in-law | — | Canada |
| 52 | Albert Clements | 41 | Head | Shipfitter Helper | Massachusetts |
| 53 | Annie B. Clements | 35 | Wife | — | Canada |
| 54 | Walter Clements | 7 | Son | — | Massachusetts |
| 55 | Alan Clements | 4 | Son | — | Massachusetts |
| 56 | Clifford Boudreau | 34 | Brother-in-law | Fisherman | Massachusetts |
| 57 | Edward C. Foster | 65 | Head | — | Massachusetts |
| 58 | Barbara Foster | 45 | Sister | Supervisor | Massachusetts |
| 59 | William J. Foster | 47 | Head | Fire Inspector | Massachusetts |
| 60 | Gertrude A. Foster | 47 | Wife | — | Massachusetts |
| 61 | Rita Foster | 23 | Daughter | Clerk | Massachusetts |
| 62 | William Foster | 22 | Son | Counterman | Massachusetts |
| 63 | Ruth Foster THIS PERSON | 20 | Daughter | Saleslady | Massachusetts |
| 64 | Mary Foster | 18 | Daughter | — | Massachusetts |
| 65 | Eugenia Foster | 16 | Daughter | — | Massachusetts |
| 66 | James Foster | 12 | Son | — | Massachusetts |
| 67 | Edward Foster | 10 | Son | — | Massachusetts |
| 68 | Raymond Foster | 7 | Son | — | Massachusetts |
| 69 | Joseph Foster | 4 | Son | — | Massachusetts |
| 70 | Mary A. Foster | 50 | Sister-in-law | — | Massachusetts |
| 71 | Asa Hayward | 68 | Head | — | Canada |
| 72 | Henrietta Small | 25 | Sister | — | Canada |
| 73 | Minnie Mccallum | 23 | Sister | — | Canada |
| 74 | Malcolm Mccallum | 23 | Nephew | Secretary | Massachusetts |
| 75 | Emma B. Nichols | 68 | Head | — | Canada |
| 76 | Grace Croquis | 60 | Head | — | Massachusetts |
| 77 | Charlotte Croquis | 31 | Daughter | Teacher | Massachusetts |
| 78 | Grace Croquis | 27 | Daughter | Teacher | Massachusetts |
| 79 | Mary Mccoy | 48 | Head | Matron | Massachusetts |
| 80 | Helen Mccoy | 22 | Daughter | — | Massachusetts |
Related Census Records
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)