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Mary Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this Mary Tracy across the 1930 and 1940 US Censuses in Hampden-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hampden-County, Massachusetts |
| Surname | Tracy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Occupation | Secretary |
| Industry | Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Secretary |
| Township / Ward | Springfield City |
| 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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Tracy | Spouse | — | 56 | ~1884 |
| James Tracy | Daughter | — | 20 | ~1920 |
| John Tracy | Head | — | 56 | ~1884 |
| Thomas Tracy | Son | — | 38 | ~1902 |
| Frances Tracy | Daughter | — | 14 | ~1926 |
| Mary Tracy | Daughter | — | 23 | ~1917 |
Census Appearances
1930
Hampden, Massachusetts
Daughter, age 13
Hampden, Massachusetts · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Hampden-County, Massachusetts
Daughter, age 23
Hampden-County, Massachusetts · implied b. ~1917 — 6 household members
| Surname | Tracy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Hampden |
| Occupation | Secretary |
| Industry | Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| 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 Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Tracy
Daughter · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Frances Tracy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Tracy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Tracy
Sibling · 1940 · age 38
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 — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01708-00096)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Marsh | 58 | Head | Spencer'S Agent | Massachusetts |
| 2 | Louise Marsh | 51 | Wife | Manager | Massachusetts |
| 3 | George Marsh | 20 | Son | — | Massachusetts |
| 4 | Mary Mackillinddy | 77 | Head | — | Eire |
| 5 | Grace Mackillinddy | 45 | Daughter | Social Wk. | Massachusetts |
| 6 | Ralph B. Burkett | 46 | Head | — | Massachusetts |
| 7 | Maude Knox | 80 | Aunt | Vault Custodian | Massachusetts |
| 8 | Nancy Roberts | 51 | Housekeeper | — | Massachusetts |
| 9 | Wallace Gelineau | 45 | Head | Housekeeper | Massachusetts |
| 10 | Hildegarde Gelineau | 42 | Wife | — | Massachusetts |
| 11 | Claire Gelineau | 17 | Daughter | — | Massachusetts |
| 12 | Ralph Gelineau | 16 | Son | — | Massachusetts |
| 13 | Archie Littlefield | 58 | Head | Engineer | Massachusetts |
| 14 | Mattie Littlefield | 59 | Wife | — | Massachusetts |
| 15 | Philip Littlefield | 27 | Son | Asst Clerk | Massachusetts |
| 16 | Frances Littlefield | 31 | Daughter | — | Italy |
| 17 | Susan Littlefield | 1 | Daughter | — | Massachusetts |
| 18 | Lucille Chobot | 38 | Head | Secretary | New York |
| 19 | John P. Macdonald | 42 | Head | Traveler | New Hampshire |
| 20 | Elizabeth Macdonald | 37 | Wife | — | Pennsylvania |
| 21 | Elizabeth Kerslow | 14 | Stepdaughter | — | Virginia |
| 22 | John H. Tracy | 56 | Head | — | Massachusetts |
| 23 | Mary E. Tracy | 56 | Wife | — | Massachusetts |
| 24 | Thomas Tracy | 38 | Son | Sales Clerk | Massachusetts |
| 25 | Mary Tracy THIS PERSON | 23 | Daughter | Secretary | Massachusetts |
| 26 | James Tracy | 20 | Daughter | — | Massachusetts |
| 27 | Frances Tracy | 14 | Daughter | — | Massachusetts |
| 28 | Arthur Connor | 69 | Head | Chauffeur | Eire |
| 29 | Jane Connor | 73 | Wife | — | Eire |
| 30 | Edith M. Davis | 67 | Head | Insurance Clerk | Massachusetts |
| 31 | Flora A. Ishani | 59 | Cousin | Bookkeeper | Massachusetts |
| 32 | John Mahoney | 35 | Head | Surveyman | Massachusetts |
| 33 | Josephine Mahoney | 36 | Wife | Physio Therapist | New Hampshire |
| 34 | Theresa Lane | 51 | Head | Cashier | Massachusetts |
| 35 | Florence Lane | 48 | Sister | Office Manager | Massachusetts |
| 36 | George Sabin | 58 | Head | Manufacturer | Maine |
| 37 | Tuly Sabin | 56 | Wife | — | Maine |
| 38 | Katherine Mcdonnell | 28 | Servant | General Maid | Eire |
| 39 | Robert Clapp | 26 | Head | Inspector | Maine |
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)