RC
Robert Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Robert Carlson across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Emil & Emil — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Carlson |
| Given Name | Robert F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Murray City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | The-moulds laborer |
| Industry | Smelter |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 959 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | The-Moulds Laborer |
| Township / Ward | Murray City |
| Est. Birth Year | ~1909 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Carlson | Head | — | 31 | ~1909 |
| Robert Carlson | Son | — | 5 | ~1935 |
| Alice Carlson | Spouse | — | 29 | ~1911 |
| Gail Carlson | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Salt Lake, …
Son, age 11
Salt Lake, Utah · implied b. ~1909 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Robert F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Son, age 21
Salt Lake, Utah · implied b. ~1909 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Truck Driver |
| Industry | Feed Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 31
Salt-Lake-County, Utah · implied b. ~1909 — 4 household members
| Surname | Carlson |
| Given Name | Robert F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Murray City |
| 1935 Residence (County) | Salt Lake |
| Occupation | The-moulds laborer |
| Industry | Smelter |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 959 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Robert Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Emil Carlson (~0.92 confidence) and father Emil Carlson (~0.92 confidence) and mother Martha Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Emil Carlson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Emil Carlson
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Martha Carlson
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Carlson
Head · 1940 · age 31 · b. ~1909 · 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
40 people indexed on this census page (nara:1940:m-t0627-04216-00769)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barbara Joan Jones | 7 | Daughter | — | Utah |
| 42 | End Of Box Elder Street To Box Elder | None | — | — | — |
| 43 | James Clove | 45 | Head | Public School Superintendent | Utah |
| 44 | Sarah Jane Clove | 47 | Wife | — | Utah |
| 45 | Martin Nelson | 40 | Head | — | Utah |
| 46 | Matilda E Nelson | 57 | Wife | Vegetable Sorter | Sweden |
| 47 | Arthur C Nelson | 24 | Son | Mail Carrier | Utah |
| 48 | Helen Pinner | 49 | Head | On Relief Work At Home | Utah |
| 49 | Catherine Pinner | 26 | Daughter | — | Utah |
| 50 | Harold Ronald Pinner | 23 | Son | Motorman Miner | Utah |
| 51 | Louis W Sanders | 36 | Head | Dealer | Utah |
| 52 | Vivian Sanders | 25 | Wife | — | Utah |
| 53 | Carolyn Sanders | 5 | Daughter | — | Utah |
| 54 | Louis Ronald Sanders | 2 | Son | — | Utah |
| 55 | End Of Box Elder Street To Miller | None | — | — | — |
| 56 | Donald C Gordon | 34 | Head | Cabinet Maker | Utah |
| 57 | Geniel P Gordon | 22 | Wife | — | Utah |
| 58 | Lola P Gordon | 2 | Daughter | — | Utah |
| 59 | End Of Miller To Hanover Street | None | — | — | — |
| 60 | Raymond J Jr Miller | 37 | Head | Boilermaker | Utah |
| 61 | Mary Miller | 38 | Wife | — | Utah |
| 62 | Marilyn Miller | 17 | Daughter | Student | Utah |
| 63 | Patricia Ruth Miller | 14 | Daughter | Student | Utah |
| 64 | Merle Jane Miller | 4 | Daughter | — | Utah |
| 65 | Robert F Carlson THIS PERSON | 31 | Head | The-Moulds Laborer | Utah |
| 66 | Alice Carlson | 29 | Wife | — | Utah |
| 67 | Robert Gary Carlson | 5 | Son | — | Utah |
| 68 | Gail Annette Carlson | 1 | Daughter | — | Utah |
| 69 | Lesley B Smith | 35 | Head | Truck Driver | Utah |
| 70 | Inez Smith | 33 | Wife | Vegetable Packer | Utah |
| 71 | Beverly Rene Smith | 13 | Daughter | — | Utah |
| 72 | Carol Jean Smith | 9 | Daughter | — | Utah |
| 73 | J Archibald Hiceman | 31 | Head | Electric Power Trouble Shooter | Virginia |
| 74 | E Dorothy Hiceman | 28 | Wife | — | Utah |
| 75 | Minnie W Freeman | 54 | Head | — | England |
| 76 | Philip C Freeman | 25 | Son | Attendant | Utah |
| 77 | James F Miller | 43 | Head | Electrician | Utah |
| 78 | Beatrice M Miller | 45 | Wife | — | Utah |
| 79 | James D Miller | 22 | Son | Flue-Dust Machine Operator | Utah |
| 80 | Lorraine Miller | 15 | Daughter | Student | Utah |
Pedigree Summary
Robert
Gen 1 · 3 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)