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Alma Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Minnehaha-County, South Dakota
Our Model Tree links this Alma Johnson across the 1920, 1930 and 1940 US Censuses in Minnehaha-County, South Dakota (XGBoost, ~Confirmed), with identified parents Edward & Edward — first a daughter (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Minnehaha-County, South Dakota |
| Surname | Johnson |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Dell Rapids City |
| 1935 Residence (County) | Minnehaha |
| Additional Details | |
| Occupation | School teacher |
| Industry | Rural school |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 540 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Teacher |
| Township / Ward | Dell Rapids City |
| Est. Birth Year | ~1915 |
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 Alma | Age | Birth yr |
|---|---|---|---|---|
| Norris Johnson | Daughter | — | 22 | ~1918 |
| Naomi Johnson | Daughter | — | 10 | ~1930 |
| Alma Johnson | Daughter | — | 25 | ~1915 |
| Edward Johnson | Head | — | 60 | ~1880 |
| Edward Johnson | Son | — | 20 | ~1920 |
| Glen Johnson | Son | — | 18 | ~1922 |
| Hilda Johnson | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Minnehaha, South …
Daughter, age 4
Minnehaha, South Dakota · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Minnehaha, South …
Daughter, age 15
Minnehaha, South Dakota · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Minnehaha-County, South …
Daughter, age 25
Minnehaha-County, South Dakota · implied b. ~1915 — 7 household members
| Surname | Johnson |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Dell Rapids City |
| 1935 Residence (County) | Minnehaha |
| Occupation | School teacher |
| Industry | Rural school |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 540 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Alma Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Johnson (~0.92 confidence) and father Edward Johnson (~0.92 confidence) and father Edward Johnson (~0.92 confidence) and mother Tilla Johnson (~0.92 confidence) and mother Hilda Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Edward Johnson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Edward Johnson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Tilla Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Hilda Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alma Johnson
Daughter · 1940 · age 25 · b. ~1915 · South Dakota
★ You are viewing this record
Sibling
Norris Johnson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Naomi Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Minnehaha-County, South Dakota
Open full size
1940 US Federal Census — Minnehaha-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03863-00119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Merlyn Goodale | 14 | Son | New Worker | South Dakota |
| 2 | Eugene Goodale | 4 | Son | — | — |
| 3 | George O. Dieken | 47 | Head | Laborer | Illinois |
| 4 | Johanna Dieken | 50 | Wife | — | Illinois |
| 5 | Edward Dieken | 19 | Son | Laborer | South Dakota |
| 6 | Viola Dieken | 16 | Daughter | New Worker | South Dakota |
| 7 | Robert Dieken | 14 | Son | New Worker | South Dakota |
| 8 | Marcella Dieken | 12 | Daughter | — | South Dakota |
| 9 | Edward Johnson | 60 | Head | Jeweler | Iowa |
| 10 | Hilda O. Johnson | 46 | Wife | — | South Dakota |
| 11 | Alma Johnson THIS PERSON | 25 | Daughter | School Teacher | South Dakota |
| 12 | Norris Johnson | 22 | Daughter | New Worker | South Dakota |
| 13 | Edward Jr. Johnson | 20 | Son | New Worker | South Dakota |
| 14 | Glen Johnson | 18 | Son | New Worker | South Dakota |
| 15 | Naomi Johnson | 10 | Daughter | — | South Dakota |
| 16 | Lena Meelborg | 61 | Head | — | Illinois |
| 17 | Louis O. Meelborg | 30 | Son | Trucker | Minnesota |
| 18 | John Meelborg | 27 | Son | Trucker | South Dakota |
| 19 | Ralph Meelborg | 20 | Son | Trucker | South Dakota |
| 20 | Grace Bedient | 24 | Daughter | — | South Dakota |
| 21 | J. P. Nielsen | 65 | Head | Retired | Denmark |
| 22 | Maggie Nielsen | 62 | Wife | — | Iowa |
| 23 | Ira M. Grove | 60 | Head | — | Minnesota |
| 24 | Max M. Grove | 20 | Son | — | South Dakota |
| 25 | Emma Pearson | 25 | Roomer | Teacher | South Dakota |
| 26 | Maren Wist | 24 | Roomer | Teacher | Minnesota |
| 27 | Betty Cullers | 22 | Roomer | Teacher | South Dakota |
| 28 | Knud Hanson | 67 | Head | — | Norway |
| 29 | Marie Hanson | 52 | Wife | — | South Dakota |
| 30 | Carl Mohn | 33 | Head | Repair Man | South Dakota |
| 31 | Arvilla Mohn | 32 | Wife | — | South Dakota |
| 32 | Clyde Mohn | 8 | Son | — | South Dakota |
| 33 | Delores Mohn | 6 | Daughter | — | South Dakota |
| 34 | Katherine Mortenson | 74 | Head | — | Denmark |
| 35 | Hans O. Nielsen | 74 | Head | — | Denmark |
| 36 | Marie Nielsen | 70 | Wife | — | Denmark |
| 37 | Carl A. Pederson | 57 | Head | Maintain Service | South Dakota |
| 38 | Hermina Pederson | 47 | Wife | — | Illinois |
| 39 | Elwood Pederson | 21 | Son | New Worker | South Dakota |
| 40 | Harvey Pederson | 18 | Son | New Worker | South Dakota |
Pedigree Summary
Alma + 4 siblings
Gen 1 · 5 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)