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William Hansen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this William Hansen across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Hansen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Louise Hansen | Daughter | — | 25 | ~1915 |
| Joanne Hansen | Daughter | — | 23 | ~1917 |
| Otto Hansen | Head | — | 51 | ~1889 |
| Otto Hansen | Son | — | 18 | ~1922 |
| Arlie Hansen | Son | — | 27 | ~1913 |
| Henry Hansen | Son | — | 21 | ~1919 |
| William Hansen | Son | — | 16 | ~1924 |
| Walter Hansen | Son | — | 19 | ~1921 |
| Mary Hansen | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Polk, Iowa
Son, age 6
Polk, Iowa · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hansen |
| Given Name | William M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Illinois |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Polk-County, Iowa
Son, age 16
Polk-County, Iowa · implied b. ~1924 — 9 household members
| Surname | Hansen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| 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 William Hansen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Hansen
Son · 1940 · age 16 · b. ~1924 · Iowa
★ You are viewing this record
Sibling
Joanne Hansen
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Hansen
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arlie Hansen
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Hansen
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Hansen
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Otto Hansen
Sibling · 1940 · age 18
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01197-00101)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Son Edward | None | M | — | — |
| 2 | Jack Edward | 0 | Son | — | Iowa |
| 3 | James D. Mccaffrey | 70 | Head | — | Indiana |
| 4 | Mary Mccaffrey | 63 | Wife | — | Illinois |
| 5 | Harry B. Rodgers | 32 | Head | Motorman | Iowa |
| 6 | Ruth Rodgers | 27 | Wife | — | Iowa |
| 7 | Harry Rodgers | 3 | Son | — | Iowa |
| 8 | Joan Rodgers | 0 | Daughter | — | Iowa |
| 9 | Milton Mahaffey | 34 | Head | Laborer | Illinois |
| 10 | Marie Mahaffey | 37 | Wife | — | Iowa |
| 11 | Arthur Johnson | 36 | Head | Wood Worker | Sweden |
| 12 | Esther Johnson | 36 | Wife | — | Sweden |
| 13 | Einar Johnson | 15 | Son | — | Iowa |
| 14 | Mary Anne Johnson | 12 | Daughter | — | Iowa |
| 15 | Eleanor Johnson | 11 | Daughter | — | Iowa |
| 16 | Donald Johnson | 9 | Son | — | Iowa |
| 17 | Sandra Johnson | 3 | Daughter | — | Iowa |
| 18 | Eli G. Traugh | 44 | Head | — | Illinois |
| 19 | Minna Traugh | 45 | Wife | Laundry | Kentucky |
| 20 | Ernest Traugh | 13 | Son | — | Iowa |
| 21 | Ernest Martin | 55 | Head | Motorman | Iowa |
| 22 | Anna Martin | 52 | Wife | — | Iowa |
| 23 | Wayne Martin | 23 | Son | Receiving Clerk | Iowa |
| 24 | Otto Hansen | 51 | Head | Garage | Nebraska |
| 25 | Mary E. Hansen | 47 | Wife | — | Illinois |
| 26 | Arlie Hansen | 27 | Son | Farmer | Nebraska |
| 27 | Louise Hansen | 25 | Daughter | — | Nebraska |
| 28 | Joanne Hansen | 23 | Daughter | — | South Dakota |
| 29 | Henry A. Hansen | 21 | Son | — | South Dakota |
| 30 | Walter Hansen | 19 | Son | Elevator Man | South Dakota |
| 31 | Otto Jr. Hansen | 18 | Son | Loading | South Dakota |
| 32 | William Hansen THIS PERSON | 16 | Son | — | South Dakota |
| 33 | Glenn Allison | 44 | Head | Laborer | Illinois |
| 34 | Garnet Allison | 31 | Wife | — | Nebraska |
| 35 | Everett Allison | 10 | Son | — | Iowa |
| 36 | Charlotte Allison | 8 | Daughter | — | Iowa |
| 37 | Edith Allison | 7 | Daughter | — | Iowa |
| 38 | Dale Allison | 5 | Daughter | — | Iowa |
| 39 | Ruth Allison | 4 | Daughter | — | Iowa |
| 40 | Lois Allison | 1 | Daughter | — | Iowa |
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)