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Helen Dunn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harding-County, South Dakota
Our Model Tree links this Helen Dunn across the 1930 and 1940 US Censuses in Harding-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Harding-County, South Dakota |
| Surname | Dunn |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | T 16 R 3 |
| 1935 Residence (County) | Harding |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | T 16 R 3 |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Melenore Dunn | Daughter | — | 12 | ~1928 |
| Lynn Dunn | Son | — | 7 | ~1933 |
| Helen Dunn | Daughter | — | 17 | ~1923 |
| Kenneth Dunn | Son | — | 21 | ~1919 |
| Leonard Koppella | Other | — | 19 | ~1921 |
| Herman Dunn | Head | — | 52 | ~1888 |
| Sara Dunn | Daughter | — | 15 | ~1925 |
| Blanche Dunn | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Harding, South …
Other, age 7
Harding, South Dakota · implied b. ~1923 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | Helen D |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Nebraska |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Harding-County, South …
Daughter, age 17
Harding-County, South Dakota · implied b. ~1923 — 8 household members
| Surname | Dunn |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | T 16 R 3 |
| 1935 Residence (County) | Harding |
| Highest Grade | Hs 2 |
| 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 Helen Dunn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Dunn
Daughter · 1940 · age 17 · b. ~1923 · South Dakota
★ You are viewing this record
Sibling
Kenneth Dunn
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melenore Dunn
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lynn Dunn
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sara Dunn
Sibling · 1940 · age 15
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 — Harding-County, South Dakota
Open full size
1940 US Federal Census — Harding-County, South Dakota
Page Contents
22 people indexed on this census page (nara:1940:m-t0627-03857-00572)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Persinger | 59 | Head | Owner | Kansas |
| 2 | Peter Kjar | 74 | Head | Old Age Assistance | Denmark |
| 3 | E. W. Kehrberg | 63 | Head | Owner | Iowa |
| 4 | Ellen Kehrberg | 62 | Wife | — | West Virginia |
| 5 | Reuben Kehrberg | 36 | Head | Owner | Iowa |
| 6 | Gladys Kehrberg | 36 | Wife | — | South Dakota |
| 7 | John Kehrberg | 14 | Son | Laborer | South Dakota |
| 8 | Shirley Kehrberg | 6 | Daughter | — | North Dakota |
| 9 | George Nelson | 58 | Head | Owner | South Dakota |
| 10 | Melvina Nelson | 54 | Sister | — | Ohio |
| 11 | Herman Dunn | 52 | Head | Owner | Ohio |
| 12 | Blanche Dunn | 47 | Wife | — | Nebraska |
| 13 | Kenneth Dunn | 21 | Son | Laborer | South Dakota |
| 14 | Helen Dunn THIS PERSON | 17 | Daughter | — | South Dakota |
| 15 | Sara Lee Dunn | 15 | Daughter | — | South Dakota |
| 16 | Melenore Dunn | 12 | Daughter | — | South Dakota |
| 17 | Lynn Dunn | 7 | Son | — | South Dakota |
| 18 | Leonard Koppella | 19 | Employee | Laborer | South Dakota |
| 19 | Joseph Thunn | 46 | Head | Owner | Ohio |
| 20 | Allie Thunn | 36 | Wife | — | Colorado |
| 21 | Richard Thunn | 14 | Son | — | South Dakota |
| 22 | Lois Thunn | 11 | 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)