CT
Carl Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Carl Thompson across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Thompson |
| Given Name | Carl |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1924 |
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 1940 census.
| Name | Relation to head | Relative to Carl | Age | Birth yr |
|---|---|---|---|---|
| Julia Thompson | Spouse | — | 39 | ~1901 |
| Lester Thompson | Son | — | 20 | ~1920 |
| Carl Thompson | Head | — | 40 | ~1900 |
| Max Thompson | Son | — | 14 | ~1926 |
| Glenn Thompson | Son | — | 1 | ~1939 |
| Richard Thompson | Son | — | 11 | ~1929 |
| Carl Thompson | Son | — | 16 | ~1924 |
| Maxine Thompson | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Polk, Iowa
Son, age 5
Polk, Iowa · implied b. ~1925 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Carol |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 16
Polk-County, Iowa · implied b. ~1924 — 8 household members
| Surname | Thompson |
| Given Name | Carl |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Highest Grade | H 2 |
| 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 Carl Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Carl Thompson
Son · 1940 · age 16 · b. ~1924 · Iowa
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Sibling
Glenn Thompson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Thompson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Thompson
Sibling · 1940 · age 20
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
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-t0627-01197-00341)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia R. Garrison | 10 | daughter | — | Iowa |
| 2 | Phillip A. Garrison | 8 | son | — | Iowa |
| 3 | Roger A. Garrison | 7 | son | — | Iowa |
| 4 | Sidney L. Garrison | 2 | son | — | Iowa |
| 5 | Carl Turner | 32 | head | Musician | Iowa |
| 6 | Carmle Turner | 29 | wife | — | Iowa |
| 7 | Wilma Turner | 10 | daughter | — | Iowa |
| 8 | Richard Turner | 9 | son | — | Iowa |
| 9 | Slayon Turner | 2 | daughter | — | Iowa |
| 10 | Louis J. Bierman | 41 | head | Mechanic | Iowa |
| 11 | Georgia Bierman | 39 | wife | — | Iowa |
| 12 | Paul Bierman | 14 | son | — | Iowa |
| 13 | Paul Williams | 48 | head | Laborer | Pennsylvania |
| 14 | Essie Williams | 43 | wife | — | Missouri |
| 15 | Mary Williams | 16 | daughter | — | Iowa |
| 16 | Russell W. Pettit | 19 | head | Sidewalks | Iowa |
| 17 | Clesta Pettit | 18 | wife | — | Iowa |
| 18 | Russell L. Pettit | 1 | son | — | Iowa |
| 19 | Harry W. Bennington | 48 | head | — | Iowa |
| 20 | Lara Bennington | 36 | wife | Seamstress | Kansas |
| 21 | Lester V. Sinclair | 26 | head | Order Clerk | Iowa |
| 22 | Maybelle Sinclair | 27 | wife | Ironer | Iowa |
| 23 | Guy W. Storm | 49 | head | Bus Driver | Iowa |
| 24 | Wade Harley Storm | 21 | lodger | Welder | Iowa |
| 25 | Ruth Storm | 18 | lodger-wife | — | Iowa |
| 26 | Patricia C. Storm | 0 | lodger-daughter | — | Iowa |
| 27 | Willie Brown | 49 | head | — | Wisconsin |
| 28 | Gladys Brown | 38 | wife | — | Iowa |
| 29 | Peggy Brown | 11 | daughter | — | Iowa |
| 30 | John W. Scott | 55 | head | Projectionist | Iowa |
| 31 | Ethel Scott | 36 | wife | — | Missouri |
| 32 | Carl Thompson | 40 | head | Foreman | Iowa |
| 33 | Julia Thompson | 39 | wife | — | Iowa |
| 34 | Lester Thompson | 20 | son | Truck Driver | Iowa |
| 35 | Carl Thompson THIS PERSON | 16 | son | — | Iowa |
| 36 | Maxine Thompson | 14 | daughter | — | Iowa |
| 37 | Max Thompson | 14 | son | — | Iowa |
| 38 | Richard Thompson | 11 | son | — | Iowa |
| 39 | Glenn Thompson | 1 | son | — | Iowa |
| 40 | Melvin De Bolt | 38 | head | — | Iowa |
Related Census Records
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)