AN
Anna Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Tripp-County, South Dakota
Our Model Tree links this Anna Nelson across the 1920, 1930 and 1940 US Censuses in Tripp-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Tripp-County, South Dakota |
| Surname | Nelson |
| Given Name | Anna A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Gassman Twp |
| 1935 Residence (County) | Tripp |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Gassman Twp |
| Est. Birth Year | ~1884 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Anna | Age | Birth yr |
|---|---|---|---|---|
| Andrew Nelson | Head | — | 63 | ~1877 |
| Harold Nelson | Son | — | 36 | ~1904 |
| Anna Nelson | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Tripp, South …
Spouse, age 35
Tripp, South Dakota · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Anna S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Tripp, South …
Spouse, age 45
Tripp, South Dakota · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Anna |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Tripp-County, South …
Spouse, age 56
Tripp-County, South Dakota · implied b. ~1884 — 3 household members
| Surname | Nelson |
| Given Name | Anna A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Gassman Twp |
| 1935 Residence (County) | Tripp |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Anna Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Anna Nelson
Spouse · 1940 · age 56 · b. ~1884 · South Dakota
★ 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 — Tripp-County, South Dakota
Open full size
1940 US Federal Census — Tripp-County, South Dakota
Page Contents
25 people indexed on this census page (nara:1940:m-t0627-03868-00752)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew Nelson | 63 | Head | Farmer | Sweden |
| 2 | Anna A Nelson THIS PERSON | 56 | Wife | — | Iowa |
| 3 | Harold D Nelson | 36 | Son | Farmer | Wisconsin |
| 4 | Theodore H Larson | 35 | Head | Farmer | Minnesota |
| 5 | Gertrude A Larson | 35 | Wife | — | Nebraska |
| 6 | Velma J Larson | 11 | Daughter | — | South Dakota |
| 7 | Jean E Larson | 10 | Daughter | — | South Dakota |
| 8 | Ilene Larson | 6 | Son | — | South Dakota |
| 9 | Ray Nelson | 34 | Head | Farmer | South Dakota |
| 10 | Luella A Nelson | 31 | Wife | — | Nebraska |
| 11 | Elaine C Nelson | 10 | Daughter | — | South Dakota |
| 12 | Dean L Nelson | 6 | Son | — | South Dakota |
| 13 | Roger D Nelson | 4 | Son | — | South Dakota |
| 14 | Ina L Nelson | 21 | Lodger | School Teacher | South Dakota |
| 15 | Frederick Larson | 28 | Hired Hand | Farm Laborer | Minnesota |
| 16 | Amos C Salmons | 54 | Head | Farmer | Iowa |
| 17 | Charles W Johnson | 84 | Head | Farmer | Sweden |
| 18 | Milton A Johnson | 53 | Son | Farm Laborer | Illinois |
| 19 | Anna R Johnson | 49 | Daughter | — | Illinois |
| 20 | David A Erickson | 40 | Head | Farmer | South Dakota |
| 21 | Lucilla M Erickson | 34 | Wife | — | Minnesota |
| 22 | Roschel M Erickson | 15 | Daughter | — | South Dakota |
| 23 | Ruth A Erickson | 14 | Daughter | — | South Dakota |
| 24 | Donald D Erickson | 10 | Son | — | South Dakota |
| 25 | Dolores M Erickson | 6 | Daughter | — | 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)