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William Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Iowa
Our Model Tree links this William Olson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 5-person household.
Age 55
b. ~1885
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Iowa |
| Surname | Olson |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 866 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Lake Mills Town |
| Est. Birth Year | ~1885 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Philip Olson | Son | — | 9 | ~1931 |
| William Olson | Head | — | 55 | ~1885 |
| Billie Hodgman | Other | — | 4 | ~1936 |
| Lois Olson | Daughter | — | 16 | ~1924 |
| Amanda Olson | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Winnebago, Iowa
Head, age 35
Winnebago, Iowa · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Winnebago, Iowa
Head, age 45
Winnebago, Iowa · implied b. ~1885 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Winnebago-County, Iowa
Head, age 55
Winnebago-County, Iowa · implied b. ~1885 — 5 household members
| Surname | Olson |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Winnebago |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 866 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| 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 William Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Olson
Head · 1940 · age 55 · b. ~1885 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Winnebago-County, Iowa
Open full size
1940 US Federal Census — Winnebago-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01213-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Groe | 76 | Head | — | Norway |
| 2 | Orin F. Groe | 37 | Son | Assistant Cashier | Iowa |
| 3 | Mabel Groe | 35 | Daughter | — | Minnesota |
| 4 | Virginia Groe | 10 | Daughter | — | Iowa |
| 5 | Richard Groe | 8 | Son | — | Iowa |
| 6 | James Groe | 3 | Son | — | Iowa |
| 7 | Ingeborg Elvebak | 43 | Head | Old Age Pension | Norway |
| 8 | Oliver Elvebak | 21 | Son | Helper | Iowa |
| 9 | Stanton Elvebak | 15 | Son | Printer | Iowa |
| 10 | Millie Skuttle | 53 | Head | Lunch Super. | Iowa |
| 11 | Emil Peterson | 52 | Head | Proprietor | Iowa |
| 12 | Evelyn Peterson | 38 | Wife | Cook & Dishwasher | Iowa |
| 13 | Eleanor Peterson | 18 | Daughter | — | Iowa |
| 14 | Gladys Peterson | 15 | Daughter | — | Iowa |
| 15 | Orten Peterson | 13 | Son | — | Iowa |
| 16 | Selmer Halverson | 48 | Head | Carpenter | Iowa |
| 17 | Mary Halverson | 33 | Wife | — | North Dakota |
| 18 | Floyd Halverson | 4 | Daughter | — | Iowa |
| 19 | Clayton Halverson | 3 | Son | — | Iowa |
| 20 | Delome Halverson | 2 | Son | — | Iowa |
| 21 | Julius Halverson | 55 | Brother | Carpenter | Iowa |
| 22 | William Olson THIS PERSON | 55 | Head | Laborer | Iowa |
| 23 | Amanda Olson | 50 | Wife | Practical Nurse | Minnesota |
| 24 | Lois Olson | 16 | Daughter | — | Iowa |
| 25 | Philip Olson | 9 | Son | — | Iowa |
| 26 | Billie Hodgman | 4 | Grandson | — | Iowa |
| 27 | Martin Aasgaard | 58 | Head | Editor | Minnesota |
| 28 | Ragna Aasgaard | 58 | Wife | — | Minnesota |
| 29 | John David Aasgaard | 17 | Son | — | Iowa |
| 30 | Peter P. Mykleby | 83 | Father-in-law | — | Norway |
| 31 | Arthur F. Wolf | 58 | Head | Retired Farmer | Iowa |
| 32 | Ida Wolf | 58 | Wife | — | Iowa |
| 33 | Joseph Trontveit | 38 | Head | Half-Owner | Minnesota |
| 34 | Della Trontveit | 37 | Wife | — | Iowa |
| 35 | Joseph Trontveit | 6 | Son | — | Iowa |
| 36 | Robert Trontveit | 3 | Son | — | Iowa |
| 37 | Paul Trontveit | 1 | Son | — | Iowa |
| 38 | Harry Bolstad | 37 | Head | Interior Decorator | Iowa |
| 39 | Sarah Bolstad | 34 | Wife | — | Minnesota |
| 40 | Betty Bolstad | 9 | Daughter | — | Iowa |
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)