HC
Helen Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Helen Carlson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Oscar & Peter — first a spouse (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Carlson |
| Given Name | Helen E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Secretary |
| Industry | School |
| Class of Worker | GW |
| Hours Worked | 25 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Secretary |
| Township / Ward | Chicago |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Carlson | Spouse | — | 32 | ~1908 |
| Ronald Carlson | Head | — | 32 | ~1908 |
| Florence Carlson | Other | — | 52 | ~1888 |
| Elmer Carlson | Son | — | 51 | ~1889 |
Census Appearances
1920
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Hazel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 22
Cook, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Stenographer |
| Industry | Motor Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 32
Cook-County, Illinois · implied b. ~1908 — 4 household members
| Surname | Carlson |
| Given Name | Helen E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Secretary |
| Industry | School |
| Class of Worker | GW |
| Hours Worked | 25 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Oscar Carlson (~0.92 confidence) and father Peter Carlson (~0.92 confidence) and mother Nellie Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Carlson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Peter Carlson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Nellie Carlson
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Carlson
Spouse · 1940 · age 32 · b. ~1908 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00938-00677)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Freda Kleinstenber | 32 | Head | Buyer | Illinois |
| 42 | Grace Kleinstenber | 29 | Wife | Saleswoman | Illinois |
| 43 | Kenneth Nelson | 26 | Head | Clerk | Illinois |
| 44 | Eleanor Nelson | 30 | Wife | Dancing Teacher | Illinois |
| 45 | George Mcgee | 26 | Head | Mail Feeder | Illinois |
| 46 | Ann Mcgee | 22 | Wife | — | Illinois |
| 47 | William M. Purcell | 43 | Head | Salesman | Canada English |
| 48 | Mary E. Purcell | 46 | Head | — | Canada English |
| 49 | Joseph D. Purcell | 14 | Son | — | Illinois |
| 50 | Helen Byer | 36 | Sister | Operator | Canada English |
| 51 | Ralph E. Anders | 50 | Head | Carpenter | Illinois |
| 52 | Beatrice M. Anders | 45 | Wife | — | Illinois |
| 53 | Armond K. Anders | 22 | Son | Clerk | Illinois |
| 54 | Ruth B. Anders | 19 | Daughter | Comptometer Operator | Illinois |
| 55 | Ronald D. Carlson | 32 | Head | Branch Manager | Illinois |
| 56 | Helen E. Carlson THIS PERSON | 32 | Wife | Secretary | Illinois |
| 57 | Elmer Carlson | 51 | Son | Clerk | North Dakota |
| 58 | Florence Carlson | 52 | Mother | — | Illinois |
| 59 | John Carls | 50 | Head | Engineer | Illinois |
| 60 | Marion Carls | 46 | Wife | — | New York |
| 61 | Harold Carls | 25 | Son | Clerk | Illinois |
| 62 | Catherine Carls | 21 | Daughter | Operator | Illinois |
| 63 | John Jr. Carls | 13 | Son | — | Illinois |
| 64 | Ruth Carls | 9 | Son | — | Illinois |
| 65 | Paul Thomas | 44 | Head | Repair Man | Illinois |
| 66 | Mabel Thomas | 41 | Wife | — | Illinois |
| 67 | Patricia Thomas | 19 | Daughter | Saleslady | Indiana |
| 68 | Robert Thomas | 15 | Son | — | Michigan |
| 69 | Jean Thomas | 13 | Daughter | — | Illinois |
| 70 | Jules B. Smith | 36 | Head | Exterminator | Illinois |
| 71 | Ethel Smith | 35 | Wife | — | Illinois |
| 72 | Berton Smith | 11 | Son | — | Illinois |
| 73 | Barbara Smith | 3 | Daughter | — | Illinois |
| 74 | Molly Smith | 34 | Sister | Stenographer | Illinois |
| 75 | Elva Thompson | 49 | Maid | Maid | Oklahoma |
| 76 | Walton W. Coe | 52 | Head | Dispatcher | Illinois |
| 77 | Garland Coe | 42 | Wife | — | Ohio |
| 78 | Ada Coe | 73 | Mother | Housekeeper | Illinois |
| 79 | Arthur Ward | 42 | Head | Broker | Illinois |
| 80 | Honorah Ward | 42 | Wife | — | Illinois |
Pedigree Summary
Helen
Gen 1 · 3 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)