JC
Joseph Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Joseph Cooper across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Joseph — first a son (b.~1904), then head of a 5-person household.
Age 36
b. ~1904
Male
Son
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cooper |
| Given Name | Joseph W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden (city of) |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | underwriter |
| Industry | insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2600 |
| Highest Grade | H-3 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Underwriter |
| Township / Ward | Malden City Of |
| Est. Birth Year | ~1904 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Paul Cooper | Son | — | 21 | ~1919 |
| Joseph Cooper | Head | — | 68 | ~1872 |
| Joseph Cooper | Son | — | 36 | ~1904 |
| Mary Cooper | Spouse | — | 61 | ~1879 |
| Francis Cooper | Daughter | — | 33 | ~1907 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Salesman |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 26
Middlesex, Massachusetts · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Joseph J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Irish Free State |
| Occupation | Clerk |
| Industry | Insurance Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 36
Middlesex-County, Massachusetts · implied b. ~1904 — 5 household members
| Surname | Cooper |
| Given Name | Joseph W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden (city of) |
| 1935 Residence (County) | Middlesex |
| Occupation | underwriter |
| Industry | insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2600 |
| Highest Grade | H-3 |
| 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 Joseph Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Cooper (~0.92 confidence) and father Joseph Cooper (~0.92 confidence) and father Joseph Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Cooper
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Joseph Cooper
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Joseph Cooper
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Cooper
Son · 1940 · age 36 · b. ~1904 · Massachusetts
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Sibling
Paul Cooper
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Cooper
Sibling · 1940 · age 33
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 — 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-t0627-01609-00281)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Janice V Goldberg | 2 | Daughter | — | Massachusetts |
| 42 | George W Mcleod | 66 | Head | Foreman | Maine |
| 43 | Mary A Mcleod | 65 | Wife | — | Massachusetts |
| 44 | Charles H Mcleod | 46 | Son | Guard | Massachusetts |
| 45 | Katherine Mcleod | 37 | Daughter | Typist & Stenographer | Massachusetts |
| 46 | Elizabeth Leahy | 71 | Sister in law | — | Massachusetts |
| 47 | Leopold W Miller | 48 | Head | Machinist | Ohio |
| 48 | Marion J Miller | 42 | Wife | — | Massachusetts |
| 49 | Ruth Miller | 16 | Daughter | — | Massachusetts |
| 50 | James F Miller | 15 | Son | — | Massachusetts |
| 51 | Robert F Miller | 13 | Son | — | Massachusetts |
| 52 | Mary F Miller | 8 | Daughter | — | Massachusetts |
| 53 | Ture Bengtz | 32 | Head | Artist And Instructor | Finland |
| 54 | Lillian E Bengtz | 31 | Wife | Secretary | Massachusetts |
| 55 | Hilda S Erickson | 57 | Mother in law | — | Sweden |
| 56 | John R Schmidt | 60 | Head | Blacksmith | Denmark |
| 57 | Alfhild M Schmidt | 54 | Wife | — | Sweden |
| 58 | Esther P Schmidt | 17 | Daughter | — | Massachusetts |
| 59 | Carl J Seaburg | 42 | Head | Machinist | Sweden |
| 60 | Agda V Seaburg | 44 | Wife | — | Sweden |
| 61 | Carl A Seaburg | 11 | Son | — | Massachusetts |
| 62 | Elsa V Seaburg | 8 | Daughter | — | Massachusetts |
| 63 | George R Mason | 32 | Head | Iron Worker | Massachusetts |
| 64 | Elizabeth J Mason | 32 | Wife | — | Canada |
| 65 | Shirley C Mason | 5 | Daughter | — | Massachusetts |
| 66 | Arline N Mason | 3 | Daughter | — | Massachusetts |
| 67 | John Tomasello | 60 | Head | Presser | Italy |
| 68 | Nancy Tomasello | 60 | Wife | — | Italy |
| 69 | Constance A Tomasello | 29 | Daughter | Secretary | Massachusetts |
| 70 | Mildred C Tomasello | 26 | Daughter | Stitcher | Massachusetts |
| 71 | Frances M Tomasello | 24 | Daughter | Stenographer | Massachusetts |
| 72 | Frank O Tomasello | 22 | Son | Mechanic | Massachusetts |
| 73 | William H Costello | 62 | Head | Pile Driver | Canada |
| 74 | Elizabeth B Costello | 56 | Wife | — | Massachusetts |
| 75 | Joseph W Cooper | 68 | Head | Blacksmith | Massachusetts |
| 76 | Mary A Cooper | 61 | Wife | — | Ireland |
| 77 | Joseph W Cooper THIS PERSON | 36 | Son | Underwriter | Massachusetts |
| 78 | Francis A Cooper | 33 | Daughter | Iron Worker | Massachusetts |
| 79 | Paul H Cooper | 21 | Son | Gunsmith | Massachusetts |
| 80 | George J Graf | 61 | Head | Lithographer | Germany |
Pedigree Summary
Joseph + 2 siblings
Gen 1 · 5 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)