MT
Margaret Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Margaret Thomas across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Richard & Richard — first a spouse (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1912 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Charles Thomas | Head | — | 31 | ~1909 |
| Jack Thomas | Son | — | 10 | ~1930 |
| Bobby Thomas | Son | — | 6 | ~1934 |
| Margaret Thomas | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Polk, Iowa
Daughter, age 7
Polk, Iowa · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 18
Polk, Iowa · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 28
Polk-County, Iowa · implied b. ~1912 — 4 household members
| Surname | Thomas |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | Hs 4 |
| 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 Margaret Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Thomas (~0.92 confidence) and father Richard Thomas (~0.92 confidence) and mother Laura Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Thomas
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Richard Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Laura Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Thomas
Spouse · 1940 · age 28 · b. ~1912 · 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-t0627-01197-00570)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Ann Mclaughlin | 1 | Daughter | — | Iowa |
| 2 | Clyde Farnsworth | 31 | Head | Auto Mechanic | Missouri |
| 3 | Ethel Mae Farnsworth | 28 | Wife | Auto Mechanic | Missouri |
| 4 | Rodger Lee Farnsworth | 7 | Son | — | Iowa |
| 5 | Betty Jean Farnsworth | 5 | Daughter | — | Iowa |
| 6 | Charles Thomas | 31 | Head | Mill Operator | Iowa |
| 7 | Margaret Thomas THIS PERSON | 28 | Wife | — | Iowa |
| 8 | Jack Thomas | 10 | Son | — | Iowa |
| 9 | Bobby Thomas | 6 | Son | — | Iowa |
| 10 | Ransom Cogwell | 48 | Head | Fireman | Arkansas |
| 11 | Victoria Cogwell | 46 | Wife | — | Alabama |
| 12 | Anna Bell Lyles | 3 | Daughter | — | Missouri |
| 13 | C. Henry Taylor | 40 | Head | Laborer | Iowa |
| 14 | Eva Taylor | 33 | Wife | — | Iowa |
| 15 | Jack Taylor | 13 | Son | — | Iowa |
| 16 | Betty Jean Taylor | 11 | Daughter | — | Iowa |
| 17 | Clara Johnson | 25 | Sister in law | Waitress | N. Dakota |
| 18 | John Turner | 35 | Head | Wire House Foreman | Georgia |
| 19 | Florence Turner | 27 | Wife | — | Iowa |
| 20 | Beverly Jean Turner | 14 | Daughter | — | Iowa |
| 21 | Richard A. Turner | 10 | Son | — | Iowa |
| 22 | John R. Turner | 1 | Son | — | Iowa |
| 23 | Clyde Burrows | 59 | Head | Real Estate | Iowa |
| 24 | Arthur C. Hedberg | 40 | Head | Salesman | Iowa |
| 25 | Arthur C. Jr. Hedberg | 12 | Son | — | Illinois |
| 26 | Hazel Hedberg | 39 | Wife | Seamstress | Illinois |
| 27 | Bernice Winnell | 40 | Head | Housekeeper | Iowa |
| 28 | Archy Clark | 29 | Head | Knitter | Iowa |
| 29 | Veva Clark | 27 | Wife | — | Iowa |
| 30 | Larry Clark | 3 | Son | — | Iowa |
| 31 | Pete Anus | 46 | Head | Coal Miner | Lithuania |
| 32 | Margaret Anus | 35 | Wife | — | Pennsylvania |
| 33 | Albert Anus | 17 | Son | — | Iowa |
| 34 | Margaret Mar Anus | 14 | Daughter | — | Iowa |
| 35 | Jessie Abbott | 37 | Head | Coach Cleaner | Oklahoma |
| 36 | Leona Abbott | 29 | Wife | — | Arkansas |
| 37 | Ima Jean Abbott | 10 | Daughter | — | Oklahoma |
| 38 | Jessie Ray Jr. Abbott | 8 | Son | — | Oklahoma |
| 39 | Melvin J. Abbott | 3 | Son | — | Oklahoma |
| 40 | Jerry Abbott | 0 | Son | — | Iowa |
Related Census Records
Pedigree Summary
Margaret
Gen 1 · 3 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)