JP
John Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Peterson across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 50
b. ~1890
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Peterson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Contract worker |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 308 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Carpenter |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1890 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Peterson | Head | — | 50 | ~1890 |
| Edward Peterson | Son | — | 20 | ~1920 |
| Robert Peterson | Son | — | 14 | ~1926 |
| Norman Peterson | Son | — | 16 | ~1924 |
| Anna Peterson | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Woodbury, Iowa
Head, age 29
Woodbury, Iowa · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1906 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth Country | Norway |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | norway |
1930
Woodbury, Iowa
Head, age 40
Woodbury, Iowa · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1905 |
| Age at First Marriage | 21 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Carpenter |
| Industry | Building Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Woodbury-County, Iowa
Head, age 50
Woodbury-County, Iowa · implied b. ~1890 — 5 household members
| Surname | Peterson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Occupation | Carpenter |
| Industry | Contract worker |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 308 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Peterson 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 Peterson
Head · 1940 · age 50 · b. ~1890 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01216-00760)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harriet G. Bennett | 14 | Daughter | — | Iowa |
| 42 | John Johnson | 27 | Head | Bookkeeper | Iowa |
| 43 | Lila E. Johnson | 24 | Wife | — | South Dakota |
| 44 | Norman G. Johnson | 5 | Son | — | Iowa |
| 45 | Jo Ann Johnson | 2 | Daughter | — | Iowa |
| 46 | William S. Brown | 28 | Head | Cattle Salesman | Nebraska |
| 47 | Dorothy M. Brown | 28 | Wife | — | Iowa |
| 48 | Jean E. Brown | 1 | Daughter | — | Iowa |
| 49 | Arthur D. Coe | 45 | Head | Sheep Buyer | Ohio |
| 50 | Mabel P. Coe | 45 | Wife | — | Minnesota |
| 51 | Joseph J. Coe | 12 | Son | — | Iowa |
| 52 | Effie J. Coe | 75 | Mother | — | Illinois |
| 53 | Marie K. Erwin | 56 | Sister | — | Iowa |
| 54 | Lars A. Dale | 52 | Head | Bookkeeper | Iowa |
| 55 | Hilda Dale | 54 | Wife | — | Minnesota |
| 56 | Donna E. Dale | 26 | Daughter | General Stenographer | No. Dakota |
| 57 | Alan L. Dale | 24 | Son | Yard Man | Montana |
| 58 | Knut Anderson | 56 | Head | Janitor & Head | Norway |
| 59 | Amelia E. Anderson | 50 | Wife | — | Norway |
| 60 | Bernice G. Anderson | 20 | Daughter | Photographer | Iowa |
| 61 | Kenneth L. Anderson | 18 | Son | — | Iowa |
| 62 | Henry J. Theldall | 58 | Head | Traveling Salesman | Iowa |
| 63 | Mayme A. Theldall | 58 | Wife | — | Iowa |
| 64 | Gordon L. Theldall | 20 | Son | — | Iowa |
| 65 | Richard Morden | 47 | Head | Traveling Salesman | Iowa |
| 66 | Agnes E. Morden | 46 | Wife | Telephone Operator | Iowa |
| 67 | Naomi A. Morden | 21 | Daughter | — | Iowa |
| 68 | Donald F. Morden | 13 | Son | — | Iowa |
| 69 | Louis Morden | 12 | Daughter | — | Iowa |
| 70 | John Peterson THIS PERSON | 50 | Head | Carpenter | Norway |
| 71 | Anna Peterson | 50 | Wife | — | Norway |
| 72 | Edward E. Peterson | 20 | Son | Shipping Clerk | Iowa |
| 73 | Norman R. Peterson | 16 | Son | — | Iowa |
| 74 | Robert V. Peterson | 14 | Son | — | Iowa |
| 75 | Charles S. Morley | 40 | Head | Ticket Agent | Iowa |
| 76 | Florence D. Morley | 40 | Wife | — | Iowa |
| 77 | Charles B. Morley | 8 | Son | — | Iowa |
| 78 | Ossian L. Anderson | 41 | Head | Office Manager | Minnesota |
| 79 | Lillian K. Anderson | 41 | Wife | Sales Lady | 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)