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John Olsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Pottawattamie, Iowa
Our Model Tree links this John Olsen across the 1920, 1930 and 1940 US Censuses in Pottawattamie, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 8-person household.
Age 43
b. ~1887
Male
Head
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Pottawattamie, Iowa |
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Boomer 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dean Olsen | Son | — | 4 | ~1926 |
| John Olsen | Head | — | 43 | ~1887 |
| Eugene Olsen | Son | — | 2 | ~1928 |
| Agna Olsen | Spouse | — | 33 | ~1897 |
| Esther Olsen | Daughter | — | 8 | ~1922 |
| Glen Olsen | Son | — | 10 | ~1920 |
| Loretta Olsen | Daughter | — | 13 | ~1917 |
| Bernice Olsen | Daughter | — | 6 | ~1924 |
Census Appearances
1920
Pottawattamie, Iowa
Head, age 32
Pottawattamie, Iowa · implied b. ~1888
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Olson |
| Given Name | John |
| 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 | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Year of Naturalization | M |
| Birthplace (normalized) | iowa |
1930
Pottawattamie, Iowa
Head, age 43
Pottawattamie, Iowa · implied b. ~1887 — 8 household members
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Head, age 53
Pottawattamie-County, Iowa · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Boomer Twp |
| 1935 Residence (County) | Pottawattamie |
| Occupation | Farmer |
| Industry | on Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Highest Grade | No 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 John Olsen 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 Olsen
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 — Pottawattamie, Iowa
Open full size
1930 US Federal Census — Pottawattamie, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel678:0557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura Christiansen | 9 | Daughter | None | Iowa |
| 52 | George S Larson | 20 | Head | Farm Laborer | Iowa |
| 53 | Bernice J Larson | 20 | Wife | None | Iowa |
| 54 | Frances M Clark | 32 | Head | Farmer | Iowa |
| 55 | Josephine C Clark | 28 | Wife | None | Iowa |
| 56 | Evelyn M Clark | 8 | Daughter | None | Iowa |
| 57 | Frances U Clark | 6 | Son | None | Iowa |
| 58 | John Olsen THIS PERSON | 43 | Head | Farmer | Iowa |
| 59 | Agna Olsen | 33 | Wife | None | Iowa |
| 60 | Loretta E Olsen | 13 | Daughter | None | Iowa |
| 61 | Glen A Olsen | 10 | Son | None | Iowa |
| 62 | Esther Olsen | 8 | Daughter | None | Iowa |
| 63 | Bernice Olsen | 6 | Daughter | None | Iowa |
| 64 | Dean H Olsen | 4 | Son | None | Iowa |
| 65 | Eugene Olsen | 2 | Son | None | Iowa |
| 66 | Peter Olsen | 40 | Head | Farmer | Iowa |
| 67 | John H Christiansen | 55 | Head | Farmer | Iowa |
| 68 | Jennie G Christiansen | 50 | Wife | None | Iowa |
| 69 | Harold J Christiansen | 20 | Son | Farm Laborer | Iowa |
| 70 | Ernest P Christiansen | 16 | Son | Farm Laborer | Iowa |
| 71 | Earl L Christiansen | 16 | Son | Farm Laborer | Iowa |
| 72 | Wilbert H Christiansen | 14 | Son | Farm Laborer | Iowa |
| 73 | Genevieve L Christiansen | 12 | Daughter | None | Iowa |
| 74 | Irene N Lynch | 28 | Daughter | None | Iowa |
| 75 | Jack E Lynch | 4 | Grandson | None | Iowa |
| 76 | Betty J Lynch | 2 | Granddaughter | None | Iowa |
| 77 | Nels C A Johnson | 62 | Head | Farmer | Denmark |
| 78 | Anna B Johnson | 57 | Wife | None | Iowa |
| 79 | Marvin C Johnson | 24 | Son | Farm Laborer | Iowa |
| 80 | Russell Wright | 16 | Laborer | Farm Laborer | Iowa |
| 81 | Anna M Schiff | 8 | Staying there | None | Nebraska |
| 82 | Charles A Gravert | 41 | Head | Farmer | Iowa |
| 83 | Marie C Gravert | 35 | Wife | None | Iowa |
| 84 | Charles L Gravert | 5 | Son | None | Iowa |
| 85 | Jens C Steffensen | 46 | Head | Farmer | Denmark |
| 86 | Helena Steffensen | 44 | Wife | None | Denmark |
| 87 | Wm Wohlers | 60 | Head | Farmer | Germany |
| 88 | Matilda Wohlers | 54 | Wife | None | Iowa |
| 89 | Edgar F C Wohlers | 25 | Son | Farm Laborer | Iowa |
| 90 | John C Wohlers | 20 | Son | Farm Laborer | Iowa |
| 91 | Ethel Wohlers | 11 | Daughter | None | Iowa |
| 92 | Albert S Fischel | 28 | Head | Farmer | Iowa |
| 93 | Myrta B Fischel | 28 | Wife | None | Iowa |
| 94 | Ruford P Fischel | 16 | Son | Farm Laborer | Iowa |
| 95 | Helen M Fischel | 12 | Daughter | None | Iowa |
| 96 | Irene F Fischel | 8 | Daughter | None | Iowa |
| 97 | Donald L Fischel | 4 | Son | None | Iowa |
| 98 | Dean E Fischel | 4 | Son | None | Iowa |
| 99 | Earl E Fischel | 3 | Son | None | Iowa |
| 100 | Leard Hansen | 31 | Head | Farmer | Germany |
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)