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Mary Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Mary Larson across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 7-person household.
Age 45
b. ~1895
Female
Spouse
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1895 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lilean Larson | Daughter | — | 12 | ~1928 |
| Mary Larson | Daughter | — | 14 | ~1926 |
| Carl Larson | Head | — | 52 | ~1888 |
| Mary Prouse | Other | — | 67 | ~1873 |
| Carl Larson | Son | — | 22 | ~1918 |
| Robert Larson | Son | — | 17 | ~1923 |
| Mary Larson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Salt Lake, …
Spouse, age 24
Salt Lake, Utah · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Maud |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Spouse, age 35
Salt Lake, Utah · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Jugoslavia |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Salt-Lake-County, Utah
Spouse, age 45
Salt-Lake-County, Utah · implied b. ~1895 — 7 household members
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Mary Larson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Larson
Spouse · 1940 · age 45 · b. ~1895 · Utah
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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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04223-01126)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William James Armour | 18 | Head | Salesman | Utah |
| 2 | Norma J. Armour | 16 | Daughter | — | Utah |
| 3 | Donna Mayvis Armour | 15 | Daughter | — | Utah |
| 4 | Robert Kay Armour | 11 | Son | — | Utah |
| 5 | John Wallace Armour | 5 | Son | — | Utah |
| 6 | Carol Marie Fredrickson | 12 | Granddaughter | — | Utah |
| 7 | Jeff Green | 47 | Head | Manager | Utah |
| 8 | Sarah M. Green | 47 | Wife | — | Utah |
| 9 | J. H. Jr. Green | 18 | Son | Repair Man | Utah |
| 10 | Helen B. Green | 9 | Daughter | — | Utah |
| 11 | Troy Walker | 57 | Head | Repair Foreman | Utah |
| 12 | Ida L. Walker | 41 | Wife | — | Utah |
| 13 | Victor W. Walker | 17 | Son | — | Utah |
| 14 | Alice D. Walker | 15 | Daughter | — | Utah |
| 15 | Robert L. Walker | 5 | Son | — | Utah |
| 16 | Extra Line | None | — | — | — |
| 17 | Carl C. Larson | 52 | Head | Auto Mechanic | Utah |
| 18 | Mary Larson THIS PERSON | 45 | Wife | — | Colorado |
| 19 | Carl J. Larson | 22 | Son | Service Man | Utah |
| 20 | Robert Larson | 17 | Son | — | California |
| 21 | Mary Jr. Larson | 14 | Daughter | — | California |
| 22 | Lilean Larson | 12 | Daughter | — | Utah |
| 23 | Mary Prouse | 67 | Mother-in-law | — | Austria |
| 24 | Joseph S. Merkli | 73 | Head | — | Switzerland |
| 25 | Ernestine S. Merkli | 76 | Wife | — | Germany |
| 26 | Rasmus Sorensen | 59 | Head | Shoemaker | Denmark |
| 27 | Theodore Sorensen | 70 | Wife | — | Denmark |
| 28 | Extra Line | None | — | — | — |
| 29 | Paul Ketterer | 48 | Head | Shoemaker | Switzerland |
| 30 | Bermora Ketterer | 44 | Wife | — | Switzerland |
| 31 | Paul Jr. Ketterer | 23 | Son | Janitor | Utah |
| 32 | Shirley Ketterer | 21 | Son | Shoemaker | Utah |
| 33 | Marjorie Ketterer | 17 | Daughter | — | Utah |
| 34 | Raymond Ketterer | 15 | Son | — | Utah |
| 35 | Andrew J. Johnson | 77 | Head | — | Sweden |
| 36 | Minnie Johnson | 66 | Wife | — | Denmark |
| 37 | John F. Staff | 55 | Head | Post Office Laborer | England |
| 38 | Christina Staff | 53 | Wife | — | England |
| 39 | Samuel Atkinson | 52 | Head | Fireman | England |
| 40 | Isabel Atkinson | 50 | Wife | — | England |
Related Census Records
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)