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Louis Thompson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Louis Thompson across the 1930 and 1940 US Censuses in Polk, Iowa (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 7-person household.
Age 19
b. ~1911
Male
Son
Born: Minnesota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1911 |
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 Louis | Age | Birth yr |
|---|---|---|---|---|
| Louis Thompson | Son | — | 19 | ~1911 |
| Charles Thompson | Son | — | 7 | ~1923 |
| John Mcnulty | Other | — | 28 | ~1902 |
| Rose Thompson | Spouse | — | 47 | ~1883 |
| Selma Thompson | Daughter | — | 11 | ~1919 |
| James Thompson | Son | — | 9 | ~1921 |
| John Thompson | Head | — | 49 | ~1881 |
Census Appearances
1930
Polk, Iowa
Son, age 19
Polk, Iowa · implied b. ~1911 — 7 household members
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Polk-County, Iowa
Other, age 30
Polk-County, Iowa · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Louie |
| Relationship to Head | Hired man |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Polk |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Louis Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Louis Thompson
Son · 1930 · age 19 · b. ~1911 · Iowa
★ You are viewing this record
Sibling
Selma Thompson
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Thompson
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Thompson
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel677:0331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Archie Bell | 29 | Head | Laborer | Scotland |
| 2 | Frances Bell | 27 | Wife | — | Iowa |
| 3 | Archie Bell | 2 | Son | — | Iowa |
| 4 | Will Butler | 36 | Head | Painter | Illinois |
| 5 | Inez Butler | 27 | Wife | — | Iowa |
| 6 | Darlene Butler | 8 | Daughter | — | Illinois |
| 7 | Douglas Butler | 7 | Son | — | Indiana |
| 8 | Betty Butler | 5 | Daughter | — | Iowa |
| 9 | Esther Butler | 2 | Daughter | — | Iowa |
| 10 | Ruth Butler | 1 | Daughter | — | Illinois |
| 11 | Edward Pilkington | 26 | Head | Miner | Missouri |
| 12 | Agnes Pilkington | 21 | Wife | — | Iowa |
| 13 | Ruth Pilkington | 12 | Sister | — | Missouri |
| 14 | William J. Wolf | 30 | Head | Truck Driver | Iowa |
| 15 | Nellie Wolf | 29 | Wife | — | Iowa |
| 16 | Jack Wolf | 8 | Son | Miner | Iowa |
| 17 | John W. Wolf | 6 | Son | — | Iowa |
| 18 | Mrs. Hazel Thompson | 38 | Head | Laborer | Iowa |
| 19 | Clarence Pittman | 39 | Head | Laborer | Iowa |
| 20 | Mary Pittman | 36 | Wife | — | Illinois |
| 21 | William Warren | 76 | Head | Brickworker | Illinois |
| 22 | Jane Warren | 63 | Wife | — | Missouri |
| 23 | John W. Smith | 50 | Head | Miner | England |
| 24 | Bridget Smith | 54 | Wife | — | England |
| 25 | John L. Thompson | 49 | Head | Truck Driver | Indiana |
| 26 | Rose Thompson | 47 | Wife | — | Iowa |
| 27 | Louis Thompson THIS PERSON | 19 | Son | — | Minnesota |
| 28 | Selma Thompson | 11 | Daughter | — | Iowa |
| 29 | James Thompson | 9 | Son | — | Iowa |
| 30 | Charles Thompson | 7 | Son | — | Iowa |
| 31 | John Mcnulty | 28 | Step-son | Baker | Iowa |
| 32 | George Cahill | 28 | Head | Pressman | Iowa |
| 33 | Nellie Cahill | 24 | Wife | — | Iowa |
| 34 | George Jr. Cahill | 5 | Son | — | Iowa |
| 35 | Donald Cahill | 3 | Son | — | Iowa |
| 36 | Merrill Cahill | 2 | Son | — | Iowa |
| 37 | Roswell Hill | 29 | Head | Miner | Iowa |
| 38 | Naomi Hill | 27 | Wife | Clerk | Iowa |
| 39 | Francis Ingall | 24 | Head | Cutter | Iowa |
| 40 | Coila Ingall | 22 | Wife | — | Iowa |
| 41 | Carl Dister | 36 | Head | — | Iowa |
| 42 | Dorothy Dister | 28 | Wife | Oiler | Illinois |
| 43 | Carl Jr. Dister | 9 | Son | — | Iowa |
| 44 | Charles R. Dister | 1 | Son | — | Iowa |
| 45 | Gerald Beech | 22 | Head | Careman | Iowa |
| 46 | Marie Beech | 20 | Wife | — | Iowa |
| 47 | Robert Beech | 1 | Son | — | Iowa |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
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)