RT
Richard Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Richard Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 7-person household.
Age 56
b. ~1884
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Thompson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Story |
| Additional Details | |
| Occupation | Farmer |
| Industry | Agri |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Lincoln Twp |
| Est. Birth Year | ~1884 |
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 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Theresa Thompson | Daughter | — | 26 | ~1914 |
| Rosa Thompson | Daughter | — | 25 | ~1915 |
| Ias Thompson | Daughter | — | 28 | ~1912 |
| Richard Thompson | Head | — | 56 | ~1884 |
| Milford Thompson | Son | — | 19 | ~1921 |
| Milford Thompson | Son | — | 23 | ~1917 |
| Marie Thompson | Spouse | — | 56 | ~1884 |
Census Appearances
1910
Polk, Iowa
Head, age 26
Polk, Iowa · implied b. ~1884 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 2 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Head, age 35
Polk, Iowa · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Head, age 45
Polk, Iowa · implied b. ~1885 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 56
Polk-County, Iowa · implied b. ~1884 — 7 household members
| Surname | Thompson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Story |
| Occupation | Farmer |
| Industry | Agri |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| 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 Richard Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Thompson
Head · 1940 · age 56 · b. ~1884 · 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 — 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-t0627-01192-00621)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Donaghy | 30 | daughter | Housework | Iowa |
| 42 | Thomas S. Donaghy | 50 | Son | Farmer | Iowa |
| 43 | Henry Donaghy | 43 | Son | Farmer | Iowa |
| 44 | Bert Donaghy | 33 | Son | Road Maintenance | Iowa |
| 45 | John E. Hildreth | 66 | Head | Farmer | Illinois |
| 46 | Minnie Hildreth | 66 | Wife | Housewife | Iowa |
| 47 | Sidney Hildreth | 29 | Head | Farmer | Iowa |
| 48 | Lois R. Hildreth | 27 | Wife | Housewife | Iowa |
| 49 | Carrol Hildreth | 8 | daughter | — | Iowa |
| 50 | Ruth Hildreth | 5 | Son | — | Iowa |
| 51 | Frank Chysterson | 24 | Head | Farm Laborer | Iowa |
| 52 | Ellen E. Chysterson | 25 | Wife | Housewife | N. Dakota |
| 53 | Fred E. Cave | 26 | Head | Manage Cafe | N. Dakota |
| 54 | Marcia Cave | 25 | Wife | Housewife | Iowa |
| 55 | H. B. Mcarthur | 28 | Head | Station Op. | Missouri |
| 56 | Alice Mcarthur | 29 | Wife | Nurse | Iowa |
| 57 | Marilyn Mcarthur | 3 | daughter | — | Iowa |
| 58 | Raymond C. Davenport | 35 | Head | Farmer | Iowa |
| 59 | Agnes Davenport | 37 | Wife | Housewife | Iowa |
| 60 | Garald Davenport | 13 | Son | — | Iowa |
| 61 | Harold Davenport | 12 | Son | — | Iowa |
| 62 | Willard Anderson | 30 | Head | — | Iowa |
| 63 | Gladys Anderson | 25 | Wife | Housewife | Iowa |
| 64 | Donald Anderson | 8 | Son | — | Iowa |
| 65 | Richard Anderson | 5 | Son | — | Iowa |
| 66 | E. H. Fox | 53 | Head | Mfg. | Missouri |
| 67 | Ethel Fox | 48 | Wife | Housewife | Iowa |
| 68 | Wayne F. Fox | 19 | Son | Salesman | Iowa |
| 69 | W. H. Kleeb | 46 | H. Man | — | Iowa |
| 70 | Glen Larkin | 38 | H. Man | Farm Manager | Iowa |
| 71 | Edward Izett | 50 | Head | Farmer | Iowa |
| 72 | Florence E. Izett | 45 | Wife | Housewife | New York |
| 73 | Miller Wilson Smith | 85 | Father-in-law | Engineer | New Jersey |
| 74 | Richard Thompson THIS PERSON | 56 | Head | Farmer | Iowa |
| 75 | Marie Thompson | 56 | Wife | Housewife | Norway |
| 76 | Ias Thompson | 28 | daughter | Housework | Iowa |
| 77 | Theresa Thompson | 26 | daughter | Housework | Iowa |
| 78 | Rosa Thompson | 25 | daughter | — | Iowa |
| 79 | Milford Thompson | 23 | Son | Farmer | Iowa |
| 80 | Milford Thompson | 19 | Son | Farmer | 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)