TP
Thomas Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Thomas Peterson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Peterson |
| Given Name | Thomas G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| Additional Details | |
| Occupation | Artist |
| Industry | Commercial |
| Class of Worker | OA |
| Hours Worked | 42 |
| Income (1939) | 600 |
| Highest Grade | No H 4 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Artist |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1919 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| John Peterson | Spouse | — | 57 | ~1883 |
| Thomas Peterson | Son | — | 21 | ~1919 |
| Gunda Peterson | Head | — | 50 | ~1890 |
Census Appearances
1920
Polk, Iowa
Son, age 1
Polk, Iowa · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Mother Tongue | Norwegian |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 11
Polk, Iowa · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Thomas S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 21
Polk-County, Iowa · implied b. ~1919 — 3 household members
| Surname | Peterson |
| Given Name | Thomas G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| Occupation | Artist |
| Industry | Commercial |
| Class of Worker | OA |
| Hours Worked | 42 |
| Income (1939) | 600 |
| Highest Grade | No H 4 |
| 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 Thomas Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and mother Gunda Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Peterson
b. ~1884
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Gunda Peterson
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Peterson
Son · 1940 · age 21 · b. ~1919 · 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 — 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-t0627-01196-00298)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard A. Wilding | 6 | Son | — | Iowa |
| 2 | Mary E. Wilding | 3 | Daughter | — | Iowa |
| 3 | Walter Erickson | 38 | Head | Machinist | Minnesota |
| 4 | Marvyn Erickson | 32 | Wife | Housewife | Iowa |
| 5 | Jerry L. Erickson | 6 | Son | — | Iowa |
| 6 | Nancy Lou Erickson | 2 | Daughter | — | Iowa |
| 7 | Albert Anderson | 50 | Head | Clerk | Iowa |
| 8 | Nellie Anderson | 46 | Wife | Housewife | Iowa |
| 9 | Emma Green | 62 | Border | Tailors | Sweden |
| 10 | Patty Anderson | 14 | Daughter | Student | Iowa |
| 11 | Russell W. Bobzin | 29 | Head | Reporter | Iowa |
| 12 | Jerry H. Bobzin | 29 | Wife | Housewife | Iowa |
| 13 | Jeanine M. Bobzin | 10 | Daughter | Student | Iowa |
| 14 | Darrell G. Bobzin | 7 | Son | Student | Iowa |
| 15 | Oscar A. Brand | 47 | Head | State Direct. | Iowa |
| 16 | Louise Brand | 43 | Wife | Steno. | Iowa |
| 17 | Minnie Haskamp | 50 | Head | Cashier | Iowa |
| 18 | Gunda Peterson | 50 | Head | Housewife | Norway |
| 19 | John O. Peterson | 57 | Husband | Paddle Maker | Norway |
| 20 | Thomas G. Peterson THIS PERSON | 21 | Son | Artist | Iowa |
| 21 | Bertram Sharp | 26 | Head | Social Worker | Canada |
| 22 | Florence Sharp | 27 | Wife | Social Worker | Montana |
| 23 | Peter A. Sharp | 0 | Son | — | Toronto |
| 24 | Barbara Sharp | 57 | Mother | Housewife | England |
| 25 | Dorthy J. Sharp | 25 | Sister | Housewife | Saskatoon |
| 26 | Vivian B. Sharp | 18 | Sister | Student | Saskatoon |
| 27 | Chris A. Boock | 72 | Head | Owner | Iowa |
| 28 | Neta Boock | 73 | Wife | Housewife | Indiana |
| 29 | Peter Swanson | 62 | Head | Janitor | Sweden |
| 30 | Nellie Swanson | 62 | Wife | Housewife | Iowa |
| 31 | Helen C. Swanson | 30 | Daughter | Nurse | Iowa |
| 32 | Mayble H. Swanson | 20 | Daughter | Stenographic | Iowa |
| 33 | — | None | — | — | — |
| 34 | Fred Fenner | 49 | Head | Officer | Illinois |
| 35 | Nina L. Fenner | 51 | Wife | Housewife | Texas |
| 36 | Marion A. Fenner | 21 | Daughter | Housewife | Texas |
| 37 | — | None | — | — | — |
| 38 | Vacant | None | — | — | — |
| 39 | Dale W. Kever | 43 | Head | Fireman | Iowa |
| 40 | Hazel I. Kever | 42 | Wife | Housewife | Illinois |
Pedigree Summary
Thomas
Gen 1 · 4 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)