HH
Harold Hansen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Audubon-County, Iowa
Our Model Tree links this Harold Hansen across the 1920, 1930 and 1940 US Censuses in Audubon-County, Iowa (XGBoost, ~Confirmed), with identified parents Peter & Peter — first a son (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Audubon-County, Iowa |
| Surname | Hansen |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sharon Township |
| 1935 Residence (County) | Audubon |
| Additional Details | |
| Class of Worker | NP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sharon Township |
| Est. Birth Year | ~1914 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Hansen | Son | — | 26 | ~1914 |
| Mrs Petersen | Other | — | 89 | ~1851 |
| Christina Hansen | Spouse | — | 61 | ~1879 |
| Peter Hansen | Head | — | 67 | ~1873 |
Census Appearances
1920
Audubon, Iowa
Son, age 6
Audubon, Iowa · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hansen |
| Given Name | Harold O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Audubon, Iowa
Son, age 16
Audubon, Iowa · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hansen |
| Given Name | Harold O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Audubon-County, Iowa
Son, age 26
Audubon-County, Iowa · implied b. ~1914 — 4 household members
| Surname | Hansen |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sharon Township |
| 1935 Residence (County) | Audubon |
| Class of Worker | NP |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| 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 Harold Hansen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Hansen (~0.92 confidence) and father Peter Hansen (~0.92 confidence) and father Peter Hansen (~0.92 confidence) and mother Christina Hansen (~0.92 confidence) and mother Christine Hansen (~0.92 confidence) and mother Sine Hansen (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Hansen
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Peter Hansen
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Peter Hansen
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Christina Hansen
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Christine Hansen
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Sine Hansen
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Hansen
Son · 1940 · age 26 · b. ~1914 · Iowa
★ 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 — Audubon-County, Iowa
Open full size
1940 US Federal Census — Audubon-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01137-01051)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bonnie Lou Nelsen | 10 | Daughter | — | Iowa |
| 42 | Mardell Nelsen | 6 | Daughter | — | Iowa |
| 43 | Hans M Bonnesen | 68 | Head | — | Denmark |
| 44 | Anna Bonnesen | 62 | Wife | — | Denmark |
| 45 | Alfred J Larsen | 37 | Head | Mechanic | Iowa |
| 46 | Ethel Larsen | 33 | Wife | — | Iowa |
| 47 | Darrell Larsen | 1 | Son | — | Iowa |
| 48 | Mrs. Emma Jennings | 44 | Head | Farmer | Iowa |
| 49 | Don Jennings | 13 | Son | — | Illinois |
| 50 | Louie Larsen | 79 | Mother | — | Denmark |
| 51 | Eddie K Andersen | 39 | Head | Farmer | Denmark |
| 52 | Dorothy Andersen | 27 | Wife | — | Iowa |
| 53 | Esther Andersen | 2 | Daughter | — | Iowa |
| 54 | Charles C Hansen | 57 | Head | Farmer | Illinois |
| 55 | Marie Hansen | 39 | Wife | — | Denmark |
| 56 | Raymond Hansen | 22 | Son | Farmer | Iowa |
| 57 | Peter J Hansen | 67 | Head | Farmer | Denmark |
| 58 | Christina Hansen | 61 | Wife | — | Denmark |
| 59 | Harold Hansen THIS PERSON | 26 | Son | — | Iowa |
| 60 | Mrs. Christina Petersen | 89 | Mother-in-law | — | Denmark |
| 61 | Fred Lauritsen | 29 | Head | Farmer | Iowa |
| 62 | Anna Lauritsen | 28 | Wife | — | Iowa |
| 63 | Bernard Lauritsen | 8 | Son | — | Iowa |
| 64 | Irene Lauritsen | 6 | Daughter | — | Iowa |
| 65 | C. C. Nelson | 73 | Head | Farmer | Denmark |
| 66 | Melerine Nelson | 62 | Wife | — | Denmark |
| 67 | H. A. Lensch | 41 | Head | Farmer | Iowa |
| 68 | Gladys Lensch | 37 | Wife | — | Iowa |
| 69 | Herbert Lensch | 18 | Son | — | Iowa |
| 70 | Buel Lensch | 18 | Son | — | Iowa |
| 71 | Bill Lensch | 16 | Son | — | Iowa |
| 72 | Joyce Lensch | 13 | Daughter | — | Iowa |
| 73 | Wendell Lensch | 11 | Son | — | Iowa |
| 74 | Nels C Nelson | 41 | Head | Farmer | Iowa |
| 75 | Anna Nelson | 36 | Wife | Farmer | Iowa |
| 76 | Nioma Nelson | 16 | Daughter | — | Iowa |
| 77 | Loraine Nelson | 7 | Daughter | — | Iowa |
| 78 | J. F. Bonnesen | 61 | Head | Farmer | Denmark |
| 79 | Johanna P. Bonnesen | 58 | Wife | — | Iowa |
| 80 | J. Son Holm | 24 | Son | Laborer | Iowa |
Pedigree Summary
Harold
Gen 1 · 6 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)