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Carl Erickson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Iowa
Our Model Tree links this Carl Erickson across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Iowa (XGBoost, ~Confirmed), with identified parents Oscar & Charlotte — first a son (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Iowa |
| Surname | Erickson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clear Lake Township |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Clear Lake Township |
| Est. Birth Year | ~1906 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Erickson | Spouse | — | 59 | ~1881 |
| Edna Erickson | Daughter | — | 20 | ~1920 |
| Roberta Erickson | Daughter | — | 18 | ~1922 |
| Carl Erickson | Son | — | 34 | ~1906 |
| Oscar Erickson | Head | — | 62 | ~1878 |
Census Appearances
1920
Hamilton, Iowa
Son, age 15
Hamilton, Iowa · implied b. ~1905 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Erickson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Hamilton, Iowa
Son, age 24
Hamilton, Iowa · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Erickson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Hamilton-County, Iowa
Son, age 34
Hamilton-County, Iowa · implied b. ~1906 — 5 household members
| Surname | Erickson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clear Lake Township |
| 1935 Residence (County) | Hamilton |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Carl Erickson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Erickson (~0.92 confidence) and mother Charlotte Erickson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Erickson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Charlotte Erickson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Carl Erickson
Son · 1940 · age 34 · b. ~1906 · Iowa
★ You are viewing this record
Sibling
Edna Erickson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roberta Erickson
Sibling · 1940 · age 18
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 — Hamilton-County, Iowa
Open full size
1940 US Federal Census — Hamilton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01164-00269)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ole I. Madson | 61 | Head | Farmer | Iowa |
| 2 | Isabelle Madson | 52 | Wife | — | Iowa |
| 3 | Norman Madson | 21 | Son | Farm Labor | Iowa |
| 4 | Josephine Madson | 16 | Daughter | — | Iowa |
| 5 | Arla Madson | 14 | Daughter | — | Iowa |
| 6 | Truman West | 35 | Head | Farmer | Iowa |
| 7 | Julia West | 33 | Wife | Teacher | Iowa |
| 8 | Alma West | 22 | Sister | Housekeeper | Iowa |
| 9 | Harlan West | 3 | Son | — | Iowa |
| 10 | Joe B. Abbas | 55 | Head | Farm Labor | Iowa |
| 11 | Nellie Abbas | 60 | Wife | — | Iowa |
| 12 | Clifford Abbas | 23 | Son | Farm Labor | Iowa |
| 13 | Mike Roe | 48 | Head | Farmer | Iowa |
| 14 | Melvin Husby | 36 | Head | Farmer | Iowa |
| 15 | Thelma Husby | 25 | Wife | — | Iowa |
| 16 | Lorraine Husby | 13 | Daughter | — | Iowa |
| 17 | Grace Husby | 7 | Daughter | — | Iowa |
| 18 | Oscar Erickson | 62 | Head | Farmer | Iowa |
| 19 | Charlotte Erickson | 59 | Wife | — | Iowa |
| 20 | Carl Erickson THIS PERSON | 34 | Son | — | Iowa |
| 21 | Edna May Erickson | 20 | Daughter | — | Iowa |
| 22 | Roberta Erickson | 18 | Daughter | — | Iowa |
| 23 | Albert Granville | 54 | Head | Farmer | Illinois |
| 24 | Emery Nelson | 25 | Head | Farmer | Iowa |
| 25 | Ruby Nelson | 23 | Wife | — | Illinois |
| 26 | Jerry Nelson | 2 | Son | — | Iowa |
| 27 | Emmett Meyers | 45 | Head | Farmer | Iowa |
| 28 | Meyers | 42 | Wife | — | Iowa |
| 29 | Lloyd Peterson | 39 | Head | Farmer | Iowa |
| 30 | Martha Peterson | 33 | Wife | — | Iowa |
| 31 | Mary M. Peterson | 11 | Daughter | — | Iowa |
| 32 | James A. Peterson | 1 | Son | — | Iowa |
| 33 | Albert Jacobson | 53 | Head | Farmer | Iowa |
| 34 | Martha Jacobson | 50 | Wife | — | Iowa |
| 35 | Jacob Teig | 76 | Father-in-law | — | Iowa |
| 36 | Selmer Enderland | 50 | Head | Farmer | Iowa |
| 37 | Martha Enderland | 41 | Wife | — | Norway |
| 38 | Melvin Dager | 25 | Head | Farmer | Iowa |
| 39 | Fern Dager | 21 | Wife | — | Iowa |
| 40 | Evelyn Snyder | 9 | Sister-in-law | — | Iowa |
Pedigree Summary
Carl + 2 siblings
Gen 1 · 2 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)