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Joseph Costa — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Joseph Costa across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 3-person household.
Age 48
b. ~1892
Male
Head
Born: Portugal
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Costa |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Cambridge City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Painter |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 800 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Occupation | Painter |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1892 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Irene Costa | Daughter | — | 20 | ~1920 |
| Joseph Costa | Head | — | 48 | ~1892 |
| Mary Costa | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Essex, Massachusetts
Head, age 28
Essex, Massachusetts · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1914 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Portuguese |
| Home Owned/Rented | R |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Middlesex, Massachusetts
Head, age 38
Middlesex, Massachusetts · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | Alien |
| Year of Immigration | 1912 |
| Age at First Marriage | 25 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Painter |
| Industry | House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1940
Middlesex-County, Massachusetts
Head, age 48
Middlesex-County, Massachusetts · implied b. ~1892 — 3 household members
| Surname | Costa |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Cambridge City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | First papers filed |
| Occupation | Painter |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 800 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
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 Joseph Costa across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Costa
Head · 1940 · age 48 · b. ~1892 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01683-00271)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Costa THIS PERSON | 48 | Head | Painter | Portugal |
| 2 | Mary Costa | 42 | Wife | — | Portugal |
| 3 | Irene Costa | 20 | Daughter | — | Massachusetts |
| 4 | Rogaline Paiva | 50 | Head | — | Portugal |
| 5 | Mary Paiva | 30 | Daughter | Stitcher | Massachusetts |
| 6 | Manuel Paiva | 25 | Son | Laborer | Massachusetts |
| 7 | Alice Paiva | 20 | Daughter | Shoe Worker | Massachusetts |
| 8 | Irene Paiva | 18 | Daughter | Shoe Worker | Portugal |
| 9 | Alfred Paiva | 16 | Son | Shoe Worker | Massachusetts |
| 10 | James Paiva | 10 | Son | — | Massachusetts |
| 11 | Adam Santaski | 50 | Head | Cooper | Lithuania |
| 12 | Stanley|Stanly Santaski | 46 | Wife | — | Lithuania |
| 13 | Bernard Santaski | 24 | Son | Truck Driver | Massachusetts |
| 14 | Stanley Santaski | 16 | Son | — | Massachusetts |
| 15 | Helen Santaski | 14 | Daughter | — | Massachusetts |
| 16 | John Santaski | 6 | Son | — | Massachusetts |
| 17 | Francis Furtado | 44 | Head | Wood Carver | Portugal |
| 18 | Irene Furtado | 37 | Wife | — | Portugal |
| 19 | William Furtado | 5 | Son | — | Massachusetts |
| 20 | Anthony Souza | 78 | Father-in-law | — | Portugal |
| 21 | Mary Souza | 64 | Mother-in-law | — | Portugal |
| 22 | Joseph Perry | 48 | Head | Shoe Worker | Portugal |
| 23 | Amelia Perry | 47 | Wife | Shoe Worker | Portugal |
| 24 | Dolores Perry | 15 | Daughter | — | Massachusetts |
| 25 | Gloria Perry | 7 | Daughter | — | Massachusetts |
| 26 | Joseph Perry | 3 | Son | — | Massachusetts |
| 27 | Petronella Kotowski | 47 | Wife | Storekeeper | Poland |
| 28 | William Kotowski | 54 | Head | Baker | Poland |
| 29 | Lilia Kotowski | 16 | Daughter | — | Massachusetts |
| 30 | Harriet Kotowski | 27 | Daughter | Presser | Massachusetts |
| 31 | Helen Plachowicz | 44 | Head | Baker'S Helper | Lithuania |
| 32 | Carl Dahlbeck | 28 | Head | Baker | Massachusetts |
| 33 | Marie Dahlbeck | 31 | Wife | — | New Hampshire |
| 34 | Elizabeth Dahlbeck | 4 | Daughter | — | Massachusetts |
| 35 | Anne Dahlbeck | 0 | Daughter | — | Massachusetts |
| 36 | Anne Dermody | 30 | Head | — | Massachusetts |
| 37 | Joseph Dermody | 10 | Son | — | Massachusetts |
| 38 | Ronald Dermody | 9 | Son | — | Massachusetts |
| 39 | Paul Dermody | 2 | Son | — | Massachusetts |
| 40 | Stanley Petrosky|Petroski | 47 | Head | Painter | Lithuania |
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)