HC
Helen Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Helen Carlson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Einer & Frank — first a spouse (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Lincoln Twp |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Housewife |
| Industry | At home |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Housewife |
| Township / Ward | Lincoln Twp |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Clifford Carlson | Son | — | 8 | ~1932 |
| Helen Carlson | Spouse | — | 36 | ~1904 |
| Arloween Carlson | Daughter | — | 5 | ~1935 |
| Alvin Carlson | Head | — | 37 | ~1903 |
Census Appearances
1920
Polk, Iowa
Daughter, age 15
Polk, Iowa · implied b. ~1905 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 26
Polk, Iowa · implied b. ~1904 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Helen H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Bookkeeper |
| Industry | Window Washing Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 36
Polk-County, Iowa · implied b. ~1904 — 4 household members
| Surname | Carlson |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Lincoln Twp |
| 1935 Residence (County) | Polk |
| Occupation | Housewife |
| Industry | At home |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Einer Carlson (~0.92 confidence) and father Frank Carlson (~0.92 confidence) and mother Mabel Carlson (~0.92 confidence) and mother Margaret Carlson (~0.92 confidence) and mother May Sipes (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
Einer Carlson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Frank Carlson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mabel Carlson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Margaret Carlson
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
May Sipes
b. ~1893
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Helen Carlson
Spouse · 1940 · age 36 · b. ~1904 · Iowa
★ 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01192-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Drake | 19 | son | Farmer | Iowa |
| 42 | Billie Drake | 17 | son | — | Iowa |
| 43 | Dean Drake | 13 | son | — | Iowa |
| 44 | Darrel Drake | 6 | son | — | Iowa |
| 45 | Donald Drake | 3 | son | — | Iowa |
| 46 | Joyce Drake | 1 | daughter | — | Iowa |
| 47 | R. M. Alleman | 29 | Head | Farmer | Iowa |
| 48 | Eva Alleman | 24 | Wife | Housewife | Iowa |
| 49 | Robert H. Erickson | 19 | H. man | Farm Laborer | Iowa |
| 50 | Alvin R. Carlson | 37 | Head | Farmer | Iowa |
| 51 | Helen Carlson THIS PERSON | 36 | Wife | Housewife | Iowa |
| 52 | Clifford L. Carlson | 8 | son | — | Iowa |
| 53 | Arloween J. Carlson | 5 | daughter | — | Iowa |
| 54 | Eldon Pies | 28 | Head | Farmer | Iowa |
| 55 | Irene Pies | 27 | Wife | Housewife | Iowa |
| 56 | Norma Jean Pies | 1 | daughter | — | Iowa |
| 57 | Charles D. Boda | 61 | Head | Farmer | Iowa |
| 58 | Alice M. Boda | 53 | Wife | Housewife | Iowa |
| 59 | Louise Boda | 29 | daughter | Housekeeper | Iowa |
| 60 | Pauline Boda | 15 | daughter | — | Iowa |
| 61 | Edgar Nichols | 26 | H. man | Farm Laborer | Missouri |
| 62 | Albert Lehman | 49 | Head | Farmer | Iowa |
| 63 | Mattie J. Lehman | 46 | Wife | Housewife | Iowa |
| 64 | Ruth Lehman | 14 | daughter | — | Iowa |
| 65 | Al Jr. Lehman | 21 | son | — | Iowa |
| 66 | Phillip Lehman | 18 | son | — | Iowa |
| 67 | Mary E. Lehman | 10 | daughter | — | Iowa |
| 68 | Carlo D. Nicholls | 23 | Head | Farmer Laborer | Missouri |
| 69 | Carol Nicholls | 19 | Wife | Housewife | Idaho |
| 70 | Sharon A. Nicholls | 0 | daughter | — | Iowa |
| 71 | Christ Lehman | 81 | Head | Farmer | Switzerland |
| 72 | Anna B. Lehman | 74 | Wife | Housewife | Iowa |
| 73 | Verene Lehman | 54 | daughter | Housekeeper | Iowa |
| 74 | Pearly Tingler | 27 | Head | Farm Laborer | Missouri |
| 75 | Roberta P. Tingler | 23 | Wife | Housewife | Missouri |
| 76 | Donald Lee Tingler | 2 | son | — | Missouri |
| 77 | Garell Tingler | 1 | son | — | Missouri |
| 78 | George D. Mcallister | 48 | Head | Farm Laborer | Missouri |
| 79 | Etta Mcallister | 49 | Wife | Housewife | Missouri |
| 80 | Catherine Mcallister | 16 | daughter | — | Montana |
Pedigree Summary
Helen
Gen 1 · 5 parents
~0.86
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)