MJ
Margaret Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Margaret Johnson across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Olin & James — first a daughter (b.~1909), then head of a 2-person household.
Age 31
b. ~1909
Female
Daughter
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Johnson |
| Given Name | Margaret L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 28 |
| Income (1939) | 960 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Teacher |
| Township / Ward | Salt Lake 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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Johnson | Daughter | — | 31 | ~1909 |
| Louise Johnson | Head | — | 55 | ~1885 |
Census Appearances
1920
Salt Lake, …
Daughter, age 11
Salt Lake, Utah · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| 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, …
Daughter, age 21
Salt Lake, Utah · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 19 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Saleslady |
| Industry | Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Daughter, age 31
Salt-Lake-County, Utah · implied b. ~1909 — 2 household members
| Surname | Johnson |
| Given Name | Margaret L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 28 |
| Income (1939) | 960 |
| Highest Grade | C 4 |
| 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 Margaret Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Olin Johnson (~0.92 confidence) and father James Johnson (~0.92 confidence) and mother Louise Johnson (~0.92 confidence) and mother Ester Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Olin Johnson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
James Johnson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Louise Johnson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Ester Johnson
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Johnson
Daughter · 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-t0627-04226-00994)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Grace Edwards | 13 | Daughter | — | Utah |
| 2 | Alice Laurene Edwards | 11 | Daughter | — | Utah |
| 3 | Edmund L Smith | 30 | Brother-in-law | Teaching Fellowship | Utah |
| 4 | Diran J Brown | 64 | Head | Merchant | Turkey |
| 5 | Annie T Brown | 59 | Wife | — | Rhode Island |
| 6 | Alice Brown | 26 | Daughter | Bookkeeper | Idaho |
| 7 | Aubra H Good | 50 | Head | Agency Supervisor | Kansas |
| 8 | Loma B Good | 42 | Wife | — | Wisconsin |
| 9 | Barbara Good | 21 | Daughter | Stenographer | California |
| 10 | Doris Ab Good | 19 | Daughter | — | California |
| 11 | David Good | 17 | Son | — | Washington |
| 12 | Sterling Good | 10 | Son | — | Utah |
| 13 | Kenneth Good | 5 | Son | — | Utah |
| 14 | Clyde S Fox | 54 | Head | Metal Mechanic | Utah |
| 15 | Annie Fox | 54 | Wife | — | Utah |
| 16 | Leo H Fox | 27 | Son | Teller | Utah |
| 17 | Rhea Fox | 24 | Daughter | — | Utah |
| 18 | Dewey Townsend | 41 | Head | Stationary Engineer | Texas |
| 19 | Margaret Townsend | 42 | Wife | — | Iowa |
| 20 | Juanita Townsend | 20 | Daughter | — | Iowa |
| 21 | Eugene Townsend | 17 | Son | — | Iowa |
| 22 | Gale Townsend | 7 | Son | — | Iowa |
| 23 | Albert Huse | 29 | Boarder | Stationary Engineer | North Dakota |
| 24 | Louise Johnson | 55 | Head | — | Germany |
| 25 | Margaret L Johnson THIS PERSON | 31 | Daughter | Teacher | Utah |
| 26 | Arthur Griffin | 58 | Head | Agency Cashier | Australia |
| 27 | Lucy S Griffin | 51 | Wife | — | California |
| 28 | Lucy F Griffin | 31 | Daughter | Bookkeeper | Nevada |
| 29 | Arthur E Griffin | 28 | Son | Operator | Washington |
| 30 | Catherine R Griffin | 23 | Daughter | Teacher | Utah |
| 31 | Phyllis R Griffin | 18 | Daughter | — | Utah |
| 32 | Josephine A Griffin | 11 | Daughter | — | Utah |
| 33 | Virginia Richardson | 30 | Head | Stenographer | Wyoming |
| 34 | Carol Richardson | 9 | Daughter | — | Utah |
| 35 | Marie Morton | 53 | Mother | — | Wyoming |
| 36 | Cornelos Hafman | 32 | Head | Baker | Holland |
| 37 | Hattie Hafman | 30 | Wife | Servant | Germany |
| 38 | Jennie Armour | 83 | Head | — | Wales |
| 39 | Jean Armour | 45 | Daughter | — | Utah |
| 40 | Philip Armour | 42 | Son | Odd Jobs | Utah |
Pedigree Summary
Margaret
Gen 1 · 4 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)