JJ
Joyce Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, South Dakota
Our Model Tree links this Joyce Johnson across the 1930 and 1940 US Censuses in Union-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, South Dakota |
| Surname | JOHNSON |
| Given Name | JOYCE |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (County) | Union |
| Additional Details | |
| Highest Grade | No 8 |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Alcester Township |
| Est. Birth Year | ~1926 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joyce | Age | Birth yr |
|---|---|---|---|---|
| Joyce Johnson | Daughter | — | 14 | ~1926 |
| Beverly Johnson | Daughter | — | 8 | ~1932 |
| Carl Johnson | Head | — | 47 | ~1893 |
| Neil Johnson | Son | — | 4 | ~1936 |
| Lila Johnson | Spouse | — | 39 | ~1901 |
| Dean Johnson | Son | — | 6 | ~1934 |
Census Appearances
1930
Union, South …
Daughter, age 4
Union, South Dakota · implied b. ~1926 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joyce E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Union-County, South …
Daughter, age 14
Union-County, South Dakota · implied b. ~1926 — 6 household members
| Surname | JOHNSON |
| Given Name | JOYCE |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (County) | Union |
| Highest Grade | No 8 |
| 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 Joyce Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joyce Johnson
Daughter · 1940 · age 14 · b. ~1926 · South Dakota
★ You are viewing this record
Sibling
Neil Johnson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dean Johnson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beverly Johnson
Sibling · 1940 · age 8
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 — Union-County, South Dakota
Open full size
1940 US Federal Census — Union-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03869-00030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Beth Carlson | 5 | Daughter | — | South Dakota |
| 42 | Norman Mitchell | 61 | HEAD | Gen. Farm | Iowa |
| 43 | Amy Mitchell | 62 | WIFE | — | South Dakota |
| 44 | Clair Mitchell | 37 | SON | Gen. Farm | Iowa |
| 45 | Warren Mitchell | 31 | SON | Gen. Farm | Iowa |
| 46 | Harriet Finn | 62 | HEAD | — | Iowa |
| 47 | Fred, F. Vogelzang | 39 | HEAD | Gen. Farm | Iowa |
| 48 | Celia Vogelzang | 31 | WIFE | — | Iowa |
| 49 | William, F. Vogelzang | 6 | SON | — | Iowa |
| 50 | Vernie Larson | 44 | HEAD | Gen. Farm | Iowa |
| 51 | Ellen Larson | 42 | WIFE | — | Iowa |
| 52 | Donald Larson | 18 | SON | Gen. Farm | South Dakota |
| 53 | Clarice Larson | 13 | Daughter | — | South Dakota |
| 54 | Bruce Larson | 9 | SON | — | South Dakota |
| 55 | Dale Larson | 5 | SON | — | South Dakota |
| 56 | Wendell Larson | 3 | SON | — | South Dakota |
| 57 | Melinda Olson | 20 | LODGER | Public School | South Dakota |
| 58 | Carl, E. Johnson | 47 | HEAD | Own Office | Sweden |
| 59 | Lila Johnson | 39 | WIFE | — | South Dakota |
| 60 | Joyce Johnson THIS PERSON | 14 | Daughter | — | South Dakota |
| 61 | Beverly Johnson | 8 | Daughter | — | South Dakota |
| 62 | Dean Johnson | 6 | SON | — | South Dakota |
| 63 | Neil Johnson | 4 | SON | — | South Dakota |
| 64 | Paul, W. Humphrey | 36 | HEAD | Gen. Farm | Iowa |
| 65 | Merla Humphrey | 32 | WIFE | — | Nebraska |
| 66 | Harry Humphrey | 75 | Father | — | Iowa |
| 67 | Emil Pearson | 58 | HEAD | Gen. Farm | Sweden |
| 68 | John Moore | 72 | HEAD | — | Indiana |
| 69 | Laura Moore | 64 | WIFE | — | Iowa |
| 70 | Hershall Moore | 37 | SON | Gen. Farm | Iowa |
| 71 | Leon Kittleson | 16 | grandson | — | South Dakota |
| 72 | Sverre Amundsen | 38 | HEAD | Gen. Farm | Norway |
| 73 | Marie Amundsen | 29 | WIFE | — | South Dakota |
| 74 | Barbara Amundsen | 12 | Daughter | — | South Dakota |
| 75 | Ordean Amundsen | 9 | SON | — | South Dakota |
| 76 | Bonnie Amundsen | 6 | Daughter | — | South Dakota |
| 77 | Jerry Amundsen | 3 | SON | — | South Dakota |
| 78 | John Holmdahl | 62 | HEAD | Gen. Farm | Sweden |
| 79 | Edith Holmdahl | 57 | WIFE | — | Sweden |
| 80 | Henry Holmdahl | 26 | SON | Gen. Farm | South Dakota |
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)