HJ
Helen Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, New Jersey
Our Model Tree links this Helen Johnson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Edward & Thomas — first a daughter (b.~1917), then head of a 2-person household.
Age 23
b. ~1917
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, New Jersey |
| Surname | Johnson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Unincorporated place Lindeneau-Piscataway |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laboratory Technician |
| Industry | Pharmaceutical Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 864 |
| Highest Grade | C-2 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Laboratory Technician |
| Township / Ward | Unincorporated Place Lindeneaupiscataway |
| 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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 23 | ~1917 |
| Edith Johnson | Head | — | 44 | ~1896 |
Census Appearances
1920
Middlesex, New …
Daughter, age 3
Middlesex, New Jersey · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Virginia |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Middlesex, New …
Daughter, age 13
Middlesex, New Jersey · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Middlesex-County, New …
Daughter, age 23
Middlesex-County, New Jersey · implied b. ~1917 — 2 household members
| Surname | Johnson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Unincorporated place Lindeneau-Piscataway |
| 1935 Residence (County) | Middlesex |
| Occupation | Laboratory Technician |
| Industry | Pharmaceutical Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 864 |
| Highest Grade | C-2 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Helen Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Johnson (~0.92 confidence) and father Thomas Johnson (~0.92 confidence) and mother Margaret Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence) and mother Elizabeth Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Johnson
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Thomas Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Margaret Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Johnson
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Johnson
Daughter · 1940 · age 23 · b. ~1917 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, New Jersey
Open full size
1940 US Federal Census — Middlesex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02362-00885)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Sabo | 2 | Son | — | West Virginia |
| 42 | Elizabeth Sabo | 24 | Daughter | Binder Layer | West Virginia |
| 43 | Mary Sabo | 18 | Daughter | Binder Layer | West Virginia |
| 44 | Louis Sabo | 11 | Son | — | West Virginia |
| 45 | Lawrence Witt | 52 | Head | — | Pennsylvania |
| 46 | Rose Witt | 51 | Wife | — | New Jersey |
| 47 | Charles Decovello | 45 | Head | — | Italy |
| 48 | Lena Decovello | 46 | Wife | — | New Jersey |
| 49 | James Decovello | 21 | Son | Laborer | New Jersey |
| 50 | Harry Decovello | 18 | Son | Yard Worker | New Jersey |
| 51 | Jenny Decovello | 16 | Daughter | — | New Jersey |
| 52 | Josephine Decovello | 15 | Daughter | — | New Jersey |
| 53 | Antoinette Decovello | 11 | Daughter | — | New Jersey |
| 54 | Corine Decovello | 10 | Daughter | — | New Jersey |
| 55 | Rocco Decovello | 8 | Son | — | New Jersey |
| 56 | Anna Decovello | 6 | Daughter | — | New Jersey |
| 57 | Louis Decovello | 5 | Son | — | New Jersey |
| 58 | Katherine Decovello | 2 | Daughter | — | New Jersey |
| 59 | John Decovello | 1 | Son | — | New Jersey |
| 60 | Arnt Brammer | 58 | Head | Toolmaker | Norway |
| 61 | Marie Brammer | 54 | Wife | — | Norway |
| 62 | William Lund | 36 | Head | Research Chemist | New Jersey |
| 63 | Katherine Lund | 26 | Wife | — | New Jersey |
| 64 | Katherine Ann Lund | 3 | Daughter | — | New Jersey |
| 65 | William M. Lund | 2 | Son | — | New Jersey |
| 66 | Robert Green | 46 | Head | Machine Tender | New Jersey |
| 67 | Mary Green | 36 | Wife | Cook | Scotland |
| 68 | Isabelle Green | 12 | Daughter | — | New York |
| 69 | Edna Green | 9 | Daughter | — | New Jersey |
| 70 | George Graff | 42 | Head | Proprietor Manager | New York |
| 71 | Mildred Graff | 40 | Wife | — | New Jersey |
| 72 | William C. Graff | 15 | Son | Truck Driver | New Jersey |
| 73 | George R. Graff | 16 | Son | — | New Jersey |
| 74 | Norman C. Graff | 11 | Son | — | New Jersey |
| 75 | Kenneth L. Graff | 9 | Son | — | New Jersey |
| 76 | Eugene R. Graff | 7 | Son | — | New Jersey |
| 77 | William Rolfe | 80 | Father-in-law | — | New Jersey |
| 78 | Martha Rolfe | 69 | Mother-in-law | — | New Jersey |
| 79 | Edith Johnson | 44 | Head | — | New Jersey |
| 80 | Helen Johnson THIS PERSON | 23 | Daughter | Laboratory Technician | New Jersey |
Pedigree Summary
Helen
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)