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Carl Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dekalb-County, Illinois
Our Model Tree links this Carl Olson across the 1920, 1930 and 1940 US Censuses in Dekalb-County, Illinois (XGBoost, ~Confirmed), with identified parents Fred & Sophia — first a head (b.~1903), then head of a 4-person household.
Age 37
b. ~1903
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dekalb-County, Illinois |
| Surname | Olson |
| Given Name | Carl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | DeKalb |
| 1935 Residence (County) | DeKalb |
| Additional Details | |
| Occupation | Regulator |
| Industry | Piano Factory |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 964 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Regulator |
| Township / Ward | Dekalb |
| Est. Birth Year | ~1903 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Coraleene Olson | Daughter | — | 8 | ~1932 |
| Mabel Olson | Spouse | — | 36 | ~1904 |
| Carl Olson | Head | — | 37 | ~1903 |
| Virginia Olson | Other | — | 70 | ~1870 |
Census Appearances
1920
Dekalb, Illinois
Son, age 17
Dekalb, Illinois · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Laborer |
| Industry | Piano Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Dekalb, Illinois
Head, age 27
Dekalb, Illinois · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Carl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Regulator |
| Industry | Piano Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Dekalb-County, Illinois
Head, age 37
Dekalb-County, Illinois · implied b. ~1903 — 4 household members
| Surname | Olson |
| Given Name | Carl |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | DeKalb |
| 1935 Residence (County) | DeKalb |
| Occupation | Regulator |
| Industry | Piano Factory |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 964 |
| Highest Grade | 8 |
| 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 Carl Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Olson (~0.92 confidence) and mother Sophia Olson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Olson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Sophia Olson
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Carl Olson
Head · 1940 · age 37 · b. ~1903 · 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 — Dekalb-County, Illinois
Open full size
1940 US Federal Census — Dekalb-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00793-00344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Merle Elsner | 8 | Son | — | Illinois |
| 42 | Wilbur Elsner | 5 | Son | — | Illinois |
| 43 | Fred W. Cone | 68 | Head | Machinist | Illinois |
| 44 | Mary E. Cone | 68 | Wife | — | Germany |
| 45 | Ellsworth Oaland | 26 | Head | Truck Driver | Illinois |
| 46 | Evelyn Oaland | 23 | Wife | — | Illinois |
| 47 | Darrel Oaland | 2 | Son | — | Illinois |
| 48 | John A. (X) Thurwits | 52 | Head | Interior Decorator | England |
| 50 | Hugo Hakala | 34 | Head | Mayor | Illinois |
| 51 | Lucille Hakala | 31 | Wife | — | Illinois |
| 52 | Corrine Hakala | 12 | Daughter | — | Illinois |
| 53 | Knutti Luoma | 59 | Head | — | Finland |
| 54 | Marie Luoma | 55 | Wife | — | Finland |
| 55 | Leonard Luoma | 21 | Son | Fine Patcher | Finland |
| 56 | William Luoma | 19 | Son | New Worker | Illinois |
| 57 | Elsie Luoma | 23 | Daughter | Labalady | Illinois |
| 58 | Martin Luoma | 12 | Son | — | Illinois |
| 59 | Carl Olson THIS PERSON | 37 | Head | Regulator | Illinois |
| 60 | Mabel Olson | 36 | Wife | — | Missouri |
| 61 | Coraleene Olson | 8 | Daughter | — | Illinois |
| 62 | Virginia Olson | 70 | Mother in law | Bellows Fitter | Kansas |
| 63 | Charles Skagarnoyus | 72 | Head | — | Lithuania |
| 64 | Katherine Skagarnoyus | 68 | Wife | — | Lithuania |
| 65 | Robert Skagarnoyus | 32 | Son | Mill Work | Lithuania |
| 66 | Anthony Skagarnoyus | 30 | Son | Mill Work | Illinois |
| 67 | Amanda Skagarnoyus | 26 | Daughter in law | — | Illinois |
| 68 | Katherine Skagarnoyus | 4 | Grand Daughter | — | Illinois |
| 69 | Joseph (X) Gotsig | 57 | Head | Farm Hand | Illinois |
| 70 | Mae Gotsig | 50 | Wife | — | Illinois |
| 71 | Altor Calemeteus | 35 | Nephew | Dressmaker | Minnesota |
| 72 | Helen Calemeteus | 36 | Wife | Salesman | Illinois |
| 73 | John Calemeteus | 2 | Son | — | Illinois |
| 74 | Ellen (X) Dahlquist | 53 | Head | — | Sweden |
| 75 | Goldie Dahlquist | 30 | Daughter | Operator | Sweden |
| 76 | Harvey Dahlquist | 26 | Son | Salesman | Illinois |
| 77 | John Flannery | 34 | Head | Police | Illinois |
| 78 | Ellen (X) Flannery | 28 | Wife | — | Canada English |
| 79 | George Flannery | 5 | Son | — | Illinois |
| 80 | Janice Flannery | 3 | Daughter | — | California |
Pedigree Summary
Carl
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)