HC
Helen Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Helen Carlson across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Carl & Elbina — first a daughter (b.~1915), then head of a 2-person household.
Age 25
b. ~1915
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 332 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Maid |
| Township / Ward | Boston City |
| Est. Birth Year | ~1915 |
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 Carlson | Daughter | — | 25 | ~1915 |
| Elbina Carlson | Head | — | 65 | ~1875 |
Census Appearances
1920
Suffolk, Massachusetts
Daughter, age 6
Suffolk, Massachusetts · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 16
Suffolk, Massachusetts · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen M. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 2 household members
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 332 |
| Highest Grade | H 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 Helen Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Carlson (~0.92 confidence) and mother Elbina Carlson (~0.92 confidence) and mother Maria Carlson (~0.92 confidence) and mother Marta Carlson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Carlson
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Elbina Carlson
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Maria Carlson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Marta Carlson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Carlson
Daughter · 1940 · age 25 · b. ~1915 · Massachusetts
★ 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 — 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-t0627-01671-00516)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Felix Jacobs | 62 | Head | Machinist | Lithuania |
| 2 | Anna Jacobs | 52 | Wife | Scrubwoman | Lithuania |
| 3 | Anna Jacobs | 22 | Daughter | Stenographer | Massachusetts |
| 4 | John E Quealey | 35 | Head | Counter Clerk | Massachusetts |
| 5 | Elizabeth G Quealey | 68 | Mother | — | Massachusetts |
| 6 | Matthew Quealey | 28 | Brother | Steno Grapher | Massachusetts |
| 7 | John Lariviere | 38 | Head | Truck Driver | New Hampshire |
| 8 | Eva Lariviere | 35 | Wife | Machine Operator | New Hampshire |
| 9 | John R Mackay | 71 | Head | — | New Hampshire |
| 10 | Grace Mackay | 66 | Wife | — | Rhode Island |
| 11 | Frederick Kearn | 54 | Head | Baker | Massachusetts |
| 12 | Catherine Quather | 22 | Niece | Seamstress | Massachusetts |
| 13 | Ruth Macdonald | 32 | Wife | Blade Inspector | Massachusetts |
| 14 | Joseph Macdonald | 39 | Head | Mechanic | Nova Scotia |
| 15 | Daniel J Murphy | 54 | Lodger | Bartender | Massachusetts |
| 16 | John J Mccarey | 69 | Head | — | Massachusetts |
| 17 | Rose H Mccarey | 63 | Wife | — | Massachusetts |
| 18 | Elbina Carlson | 65 | Head | — | Sweden |
| 19 | Helen Carlson THIS PERSON | 25 | Daughter | Maid | Massachusetts |
| 20 | Henry Carlson | 36 | Head | Meter Reader | Massachusetts |
| 21 | Alice Carlson | 27 | Wife | Machine Operator | Massachusetts |
| 22 | Henry Carlson | 5 | Son | — | Massachusetts |
| 23 | William Kordas | 34 | Head | Stationary Fireman | Massachusetts |
| 24 | Margaret Kordas | 33 | Wife | — | Massachusetts |
| 25 | Margaret Kordas | 10 | Daughter | — | Massachusetts |
| 26 | William Kordas | 7 | Son | — | Massachusetts |
| 27 | Robert Kordas | 2 | Son | — | Massachusetts |
| 28 | Joan A Reed | 56 | Head | Printer | New York |
| 29 | Catherine Reed | 53 | Wife | — | Massachusetts |
| 30 | Ruth Reed | 32 | Daughter | Receptionist Clerk | Massachusetts |
| 31 | Robert Reed | 18 | Son | Stock Boy | Massachusetts |
| 32 | John Kordaszewski | 63 | Head | — | Poland |
| 33 | Antonet Kordaszewski | 53 | Wife | — | Poland |
| 34 | Helen Kordaszewski | 32 | Daughter | Bench Worker | Massachusetts |
| 35 | Mary Stokowski | 32 | Daughter | — | Poland |
| 36 | Alexander Stokowski | 38 | Son-in-law | Stationary Fireman | Massachusetts |
| 37 | Marion Stokowski | 9 | Grand-daughter | — | Massachusetts |
| 38 | Florence Stokowski | 4 | Grand-daughter | — | Massachusetts |
| 39 | William Byrnes | 26 | Head | Sheet Metal Worker | Massachusetts |
| 40 | Ruth Byrnes | 20 | Wife | Waitress | Massachusetts |
Related Census Records
Pedigree Summary
Helen
Gen 1 · 4 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)