RT
Ruth Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Ruth Thompson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Frederick & Anna — first a spouse (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Thompson |
| Given Name | Ruth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Norma Thompson | Daughter | — | 6 | ~1934 |
| Francis Thompson | Head | — | 27 | ~1913 |
| William Thompson | Son | — | 2 | ~1938 |
| Ruth Thompson | Spouse | — | 23 | ~1917 |
Census Appearances
1920
Polk, Iowa
Daughter, age 4
Polk, Iowa · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ruth Hill |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 14
Polk, Iowa · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ruth H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 23
Polk-County, Iowa · implied b. ~1917 — 4 household members
| Surname | Thompson |
| Given Name | Ruth |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines city |
| 1935 Residence (County) | Polk |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 Ruth Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frederick Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Thompson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Thompson
Spouse · 1940 · age 23 · b. ~1917 · 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-t0627-01197-00333)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Shirley Patrick | 5 | Daughter | — | Iowa |
| 2 | Norman Patrick | 3 | Son | — | Nebraska |
| 3 | George Marks | 27 | Head | Laborer | Iowa |
| 4 | Catherine Marks | 23 | Wife | — | Iowa |
| 5 | Ronald W. Eckles | 5 | Step-son | — | Iowa |
| 6 | Larry Lee Eckles | 4 | Son | — | Iowa |
| 7 | Arlie Stone | 31 | Head | Truck Driver | Iowa |
| 8 | Edna Stone | 28 | Wife | — | Iowa |
| 9 | Jerry Stone | 6 | Son | — | Iowa |
| 10 | Jimmy Stone | 4 | Son | — | Iowa |
| 11 | Glaston Bosteder | 34 | Head | Plasterer | Nebraska |
| 12 | Ella V. Bosteder | 26 | Wife | — | Nebraska |
| 13 | A. J. Wagner | 60 | Head | Broom Maker | Iowa |
| 14 | Francis Thompson | 27 | Head | Laborer | Illinois |
| 15 | Ruth Thompson THIS PERSON | 23 | Wife | — | Iowa |
| 16 | Norma Thompson | 6 | Daughter | — | Iowa |
| 17 | William Thompson | 2 | Son | — | Iowa |
| 18 | Clyde D. Mccall | 56 | Head | Truck Driver | Iowa |
| 19 | Catherine Mccall | 50 | Wife | — | Iowa |
| 20 | Glen Mccall | 3 | Son | — | Iowa |
| 21 | Eleanor Louise Mccall | 1 | Daughter | — | Iowa |
| 22 | Syd Wilson | 39 | Head | Carpenter | Michigan |
| 23 | Lela Wilson | 37 | Wife | — | Minnesota |
| 24 | Ilon Wilson | 16 | Son | — | Iowa |
| 25 | Dale Ramon Wilson | 13 | Son | — | Iowa |
| 26 | Juanita Wilson | 10 | Daughter | — | Iowa |
| 27 | Gerald Wilson | 6 | Son | — | Iowa |
| 28 | Wilber Wilson | 4 | Son | — | Iowa |
| 29 | Duane Wilson | 1 | Son | — | Iowa |
| 30 | Steven Waters | 28 | Head | Laborer | Nebraska |
| 31 | Alice Waters | 25 | Wife | — | Illinois |
| 32 | Mary Lou Waters | 5 | Daughter | — | Iowa |
| 33 | Samuel Waters | 2 | Son | — | Iowa |
| 34 | George Sage | 55 | Head | Dishwasher | Iowa |
| 35 | Violet Grogan | 37 | Head | — | Iowa |
| 36 | Thomas F. Grogan | 9 | Son | — | Iowa |
| 37 | Gerald Terry Grogan | 6 | Son | — | Iowa |
| 38 | William Grogan | 3 | Son | — | Iowa |
| 39 | Sharon Kay Grogan | 1 | Daughter | — | Iowa |
| 40 | Sidney Wilcox | 56 | Head | Watchman | Iowa |
Related Census Records
Pedigree Summary
Ruth
Gen 1 · 2 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)