JL
John Larsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Audubon, Iowa
Our Model Tree links this John Larsen across the 1920, 1930 and 1940 US Censuses in Audubon, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 7-person household.
Age 43
b. ~1887
Male
Head
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Audubon, Iowa |
| Surname | Larsen |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Farmer |
| Industry | Cattle feeding |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Oakfield Township |
| Est. Birth Year | ~1887 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Erna Larsen | Daughter | — | 20 | ~1910 |
| Lily Larsen | Other | — | 40 | ~1890 |
| Ardys Larsen | Daughter | — | 11 | ~1919 |
| Edward Larsen | Son | — | 9 | ~1921 |
| Ina Larsen | Daughter | — | 15 | ~1915 |
| John Larsen | Head | — | 43 | ~1887 |
| Myrtis Larsen | Daughter | — | 13 | ~1917 |
Census Appearances
1920
Audubon, Iowa
Head, age 32
Audubon, Iowa · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Audubon, Iowa
Head, age 43
Audubon, Iowa · implied b. ~1887 — 7 household members
| Surname | Larsen |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | Cattle feeding |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Head, age 53
Audubon-County, Iowa · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Oakfield Township |
| 1935 Residence (County) | Audubon |
| Occupation | Farming |
| Industry | Stock farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 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 John Larsen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Larsen
Head · 1930 · age 43 · b. ~1887 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Audubon, Iowa
Open full size
1930 US Federal Census — Audubon, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel640:0514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John G. Thomsen | 65 | Head | Farmer | Denmark |
| 2 | Dagmar Thomsen | 52 | Wife-H | — | Denmark |
| 3 | Anglo R. Bush | 15 | Lodger | Labour | Iowa |
| 4 | Alfred C. Nelson | 35 | Head | Farmer | Iowa |
| 5 | Lila C. Nelson | 32 | Wife-H | — | Iowa |
| 6 | Laverna F. Nelson | 9 | Daughter | — | Iowa |
| 7 | Bernice L. Nelson | 5 | Daughter | — | Iowa |
| 8 | Curtis F. Nelson | 6 | Son | — | Iowa |
| 9 | Virginia M. Nelson | 4 | Daughter | — | Iowa |
| 10 | Walter Nelson | 43 | Head | Farmer | Iowa |
| 11 | Ottomine M. Nelson | 35 | Wife-H | — | Denmark |
| 12 | Wesley L. Nelson | 12 | Son | — | Iowa |
| 13 | Roger W. Nelson | 10 | Son | — | Iowa |
| 14 | Beatrice E. Nelson | 8 | Daughter | — | Iowa |
| 15 | Howard F. Nelson | 5 | Son | — | Iowa |
| 16 | Joyce E. Nelson | 2 | Daughter | — | Iowa |
| 17 | Harry Jubal | 30 | Lodger | Labour | Iowa |
| 18 | Lawrence P. Larsen | 46 | Head | Farmer | Iowa |
| 19 | Lena M. Larsen | 43 | Wife-H | — | Iowa |
| 20 | Vernon W. Larsen | 17 | Son | — | Iowa |
| 21 | Christian S. Larsen | 15 | Son | — | Iowa |
| 22 | Leroy O. Larsen | 10 | Son | — | Iowa |
| 23 | Marvel R. Larsen | 5 | Son | — | Iowa |
| 24 | John F. Larsen THIS PERSON | 43 | Head | Farmer | Iowa |
| 25 | Lily C. Larsen | 40 | Wife-H | — | Iowa |
| 26 | Erna A. Larsen | 20 | Daughter | — | Iowa |
| 27 | Ina S. Larsen | 15 | Daughter | — | Iowa |
| 28 | Myrtis M. Larsen | 13 | Daughter | — | Iowa |
| 29 | Ardys J. Larsen | 11 | Daughter | — | Iowa |
| 30 | Edward F. Larsen | 9 | Son | — | Iowa |
| 31 | Andrew F. Johnson | 54 | Head | Farmer | Iowa |
| 32 | Roseta M. Johnson | 41 | Wife-H | — | Iowa |
| 33 | Hurst J. Johnson | 25 | Son | Labour | Iowa |
| 34 | Arlene Johnson | 7 | Daughter | — | Iowa |
| 35 | Martin Nelson | 47 | Head | Farmer | Iowa |
| 36 | Laura L. Nelson | 47 | Wife-H | — | Iowa |
| 37 | Riley E. Nelson | 19 | Son | Labour | Iowa |
| 38 | Irene R. Nelson | 17 | Daughter | — | Iowa |
| 39 | Russell E. Nelson | 14 | Son | Labour | Iowa |
| 40 | Raynold D. Nelson | 13 | Son | — | Iowa |
| 41 | Marvin D. Nelson | 8 | Son | — | Iowa |
| 42 | Harvey E. Nelson | 7 | Son | — | Iowa |
| 43 | Dorothy M. Nelson | 91 | Mother | — | Denmark |
| 44 | Lawrence S. Anderson | 37 | Head | Farmer | Denmark |
| 45 | Samuel L. Anderson | 15 | Son | — | Iowa |
| 46 | Lona E. Anderson | 13 | Daughter | — | Iowa |
| 47 | Harold H. Anderson | 8 | Son | — | Iowa |
| 48 | Carl M. Peterson | 44 | Head | Farmer | Iowa |
| 49 | Christina Peterson | 38 | Wife-H | — | Iowa |
| 50 | Arthur L. Peterson | 14 | Son | — | Iowa |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)