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John Olsen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this John Olsen across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 3-person household.
Age 54
b. ~1886
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | foreman |
| Industry | power & light co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2200 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Foreman |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1886 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Olsen | Head | — | 54 | ~1886 |
| Jean Olsen | Daughter | — | 20 | ~1920 |
| Mabel Olsen | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Salt Lake, …
Head, age 33
Salt Lake, Utah · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Bookkeeper |
| Industry | Freight Office |
| Class of Worker | S |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Head, age 44
Salt Lake, Utah · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 28 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Clerk |
| Industry | Power & Light |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Radio Set | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 54
Salt-Lake-County, Utah · implied b. ~1886 — 3 household members
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | foreman |
| Industry | power & light co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2200 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 John Olsen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Olsen
Head · 1940 · age 54 · b. ~1886 · Utah
★ 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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-04226-00132)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gale Anderson | 19 | daughter | Clerk | Utah |
| 42 | Earl Hills | 19 | head | Clerk | Utah |
| 43 | Claire Hills | 18 | wife | — | Utah |
| 44 | Ronald Hills | 0 | son | — | Utah |
| 45 | Rulon Butterfield | 18 | head | Carpenter Helper | Idaho |
| 46 | Mary Butterfield | 16 | wife | — | Colorado |
| 47 | Samuel Butterfield | 44 | head | Landscaper | Utah |
| 48 | Nancy Butterfield | 39 | wife | — | Idaho |
| 49 | David G. Rich | 39 | head | Serviceman | Utah |
| 50 | Meriam Rich | 38 | wife | — | Idaho |
| 51 | Beverly Rich | 13 | daughter | — | Utah |
| 52 | Edwin E. Rich | 76 | head | — | England |
| 53 | Edwin P. Rich | 42 | son | Collector | Utah |
| 54 | Mary E. Rich | 39 | daughter | Stenographer | Utah |
| 55 | Edith Rich | 15 | granddaughter | — | California |
| 56 | William Emery | 71 | head | Meter Reader | Utah |
| 57 | Lurena Emery | 63 | wife | — | Utah |
| 58 | Earl Jacobsen | 28 | head | Salesman | Utah |
| 59 | Mary Jacobsen | 26 | wife | — | Utah |
| 60 | Betty Jacobsen | 1 | daughter | — | Utah |
| 61 | Mary Emery | 71 | head | — | Utah |
| 62 | Elmer Leake | 35 | head | Laborer | Utah |
| 63 | Beatrice Leake | 33 | wife | — | Utah |
| 64 | Thomas Leake | 14 | son | — | Utah |
| 65 | Ronald Leake | 12 | son | — | Utah |
| 66 | John Olsen THIS PERSON | 54 | head | Foreman | Utah |
| 67 | Mabel Olsen | 48 | wife | — | Utah |
| 68 | Jean Olsen | 20 | daughter | Stenographer | Utah |
| 69 | Elizabeth Emery | 74 | head | — | Utah |
| 70 | Helen Emery | 35 | daughter | Stenographer | Utah |
| 71 | Elizabeth Emery | 31 | daughter | Stenographer | Utah |
| 74 | Fred Taylor | 64 | head | Pressman | England |
| 75 | Ada S. Taylor | 59 | wife | — | Utah |
| 76 | James Taylor | 19 | son | — | Utah |
| 77 | Ole Gulbrandsen | 67 | head | Electric Engineer | Norway |
| 78 | Rina Gulbrandsen | 42 | wife | — | Illinois |
| 79 | Norman Gulbrandsen | 21 | son | Religious Mission | Utah |
| 80 | Marian Williams | 65 | head | — | Utah |
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)