MC
Mary Cohen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Cohen across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 7-person household.
Age 32
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Cohen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Switchboard operator |
| Industry | Coal manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Switchboard Operator |
| Township / Ward | Boston City |
| Est. Birth Year | ~1908 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cohen | Daughter | — | 32 | ~1908 |
| Annie Cohen | Spouse | — | 60 | ~1880 |
| Sarah Cohen | Daughter | — | 39 | ~1901 |
| Meyer Cohen | Son | — | 29 | ~1911 |
| Herbert Cohen | Son | — | 27 | ~1913 |
| Louis Cohen | Head | — | 60 | ~1880 |
| Irving Cohen | Son | — | 21 | ~1919 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 21
Suffolk, Massachusetts · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cohen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Operator |
| Industry | Garment Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 7 household members
| Surname | Cohen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Switchboard operator |
| Industry | Coal manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 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 Mary Cohen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cohen
Daughter · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
Herbert Cohen
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Meyer Cohen
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Cohen
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irving Cohen
Sibling · 1940 · age 21
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-t0627-01681-00279)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert M. Stone | 44 | Head | Machinist | Connecticut |
| 2 | Beatrice Stone | 44 | Wife | — | Connecticut |
| 3 | Arthur Stone | 20 | Son | Shipper | Massachusetts |
| 4 | Leonard Poco | 21 | Step-son | Shipper | Pennsylvania |
| 5 | Eleanor Poco | 12 | Step-daughter | — | Pennsylvania |
| 6 | Dan G. Poco | 9 | Step-son | — | Pennsylvania |
| 7 | John D. Macdonald | 44 | Head | Custodian | Rhode Island |
| 8 | Mildred Macdonald | 39 | Wife | — | Massachusetts |
| 9 | John Macdonald | 15 | Son | — | Massachusetts |
| 10 | Robert Macdonald | 10 | Son | — | Massachusetts |
| 11 | Thomas Macdonald | 8 | Son | — | Massachusetts |
| 12 | Edward S. Segal | 40 | Head | Mail Clerk | Massachusetts |
| 13 | Ethel Segal | 34 | Wife | — | Massachusetts |
| 14 | Jeanne Segal | 13 | Daughter | — | Massachusetts |
| 15 | Robert Segal | 8 | Son | — | Massachusetts |
| 16 | Pearl Brown | 28 | Lodger | — | Massachusetts |
| 17 | Louis Cohen | 60 | Head | Tailor | Russia |
| 18 | Annie Cohen | 60 | Wife | — | Russia |
| 19 | Sarah Cohen | 39 | Daughter | Bookkeeper | Massachusetts |
| 20 | Mary Cohen THIS PERSON | 32 | Daughter | Switchboard Operator | Massachusetts |
| 21 | Meyer Cohen | 29 | Son | — | Massachusetts |
| 22 | Herbert Cohen | 27 | Son | Music Teacher | Massachusetts |
| 23 | Irving Cohen | 21 | Son | — | Massachusetts |
| 24 | Lawrence M. Pears | 34 | Head | Bookkeeper | Massachusetts |
| 25 | Edna J. Pears | 32 | Sister | Bookkeeper | Massachusetts |
| 26 | Charles T. Pears | 26 | Brother | Salesman | Massachusetts |
| 27 | Daniel Crane | 61 | Head | Salesman | Massachusetts |
| 28 | Leon Crane | 55 | Wife | — | Massachusetts |
| 29 | John Foley | 35 | Son-in-law | Bartender | Massachusetts |
| 30 | Madeline Foley | 29 | Daughter | — | Massachusetts |
| 31 | Mary Foley | 1 | Daughter | — | Massachusetts |
| 32 | Meyer Goldstein | 54 | Head | Salesman | New York |
| 33 | Anna Goldstein | 52 | Wife | — | Russia |
| 34 | Shirley Goldstein | 22 | Daughter | Nurse | Massachusetts |
| 35 | Allen Goldstein | 20 | Son | Shipper | New York |
| 36 | George E. Ross | 35 | Head | Machinist | Massachusetts |
| 37 | Viola Ross | 16 | Daughter | — | Massachusetts |
| 38 | James Henry Ross | 35 | Brother | Shipper | Massachusetts |
| 39 | Alice Ross | 27 | Sister-in-law | — | Massachusetts |
| 40 | Barbara Ross | 2 | Niece | — | Massachusetts |
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)