DT
Dorothy Thomas — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Iowa, Iowa
Our Model Tree links this Dorothy Thomas across the 1920 and 1930 US Censuses in Iowa, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 11-person household.
Age 13
b. ~1917
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Iowa, Iowa |
| Surname | Thomas |
| Given Name | Dorothy I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Pilot Township |
| 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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Treva Thomas | Daughter | — | 4 | ~1926 |
| Dorothy Thomas | Daughter | — | 13 | ~1917 |
| Mildred Thomas | Daughter | — | 9 | ~1921 |
| Velma Thomas | Daughter | — | 2 | ~1928 |
| Hugh Thomas | Head | — | 43 | ~1887 |
| Warren Thomas | Son | — | 7 | ~1923 |
| Kenneth Thomas | Son | — | 14 | ~1916 |
| Orville Thomas | Son | — | 11 | ~1919 |
| Byron Thomas | Son | — | ~1930 | |
| Russell Thomas | Son | — | 5 | ~1925 |
| Iva Thomas | Spouse | — | 36 | ~1894 |
Census Appearances
1920
Iowa, Iowa
Daughter, age 2
Iowa, Iowa · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Dorothy J |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Iowa, Iowa
Daughter, age 13
Iowa, Iowa · implied b. ~1917 — 11 household members
| Surname | Thomas |
| Given Name | Dorothy I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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 |
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 Dorothy Thomas across 2 US Census years (1920 and 1930) in Iowa, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Thomas
Daughter · 1930 · age 13 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Velma Thomas
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Thomas
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Treva Thomas
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Thomas
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Orville Thomas
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Byron Thomas
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Thomas
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Thomas
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 — Iowa, Iowa
Open full size
1930 US Federal Census — Iowa, Iowa
Page Contents
47 people indexed on this census page (ia:1930:iowacensus00reel659:1136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Zapotelecky | 81 | Mother-in-law | — | Bohemia |
| 2 | Fred W Dahms | 70 | Head | Farmer | Germany |
| 3 | Mary E Dahms | 68 | Wife | — | Germany |
| 4 | Olga M Dahms | 24 | Daughter | — | Iowa |
| 5 | Helm F Hartzell | 35 | Head | Farmer | Indiana |
| 6 | Marjorie C Hartzell | 28 | Wife | — | South Dakota |
| 7 | Ruby C Hartzell | 2 | Daughter | — | Iowa |
| 8 | Bertha M Barnes | 52 | Mother-in-law | — | Illinois |
| 9 | E Elizabeth Tindall | 63 | Head | — | Iowa |
| 10 | Thomas A Tindall | 63 | Husband | Farmer | Iowa |
| 11 | Minnie E Tindall | 22 | Daughter | — | Iowa |
| 12 | George A Vorbrich | 39 | Head | Farmer | Germany |
| 13 | Ellen A Vorbrich | 32 | Wife | — | Iowa |
| 14 | Viola M Vorbrich | 10 | Daughter | — | Iowa |
| 15 | George E Vorbrich | 7 | Son | — | Iowa |
| 16 | Nancy Bruhn | 24 | Boarder | Teacher | Iowa |
| 17 | Roy Klein | 39 | Head | Farmer | Iowa |
| 18 | Bertha J Klein | 37 | Wife | — | Iowa |
| 19 | Dorothy M Klein | 15 | Daughter | — | Iowa |
| 20 | Wayne T Klein | 12 | Son | — | Iowa |
| 21 | Colleen M Klein | 8 | Daughter | — | Iowa |
| 22 | Emery G Klein | 4 | Son | — | Iowa |
| 23 | Donaldine L Klein | 1 | Daughter | — | Iowa |
| 24 | Thomas Scandridge | 53 | Head | Farmer | Iowa |
| 25 | Viola Scandridge | 44 | Wife | — | Iowa |
| 26 | Roy S Scandridge | 16 | Son | — | Iowa |
| 27 | Thomas R Evans | 29 | Head | Laborer | Missouri |
| 28 | Viola O Evans | 25 | Wife | — | South Dakota |
| 29 | Thomas W Evans | 4 | Son | — | Iowa |
| 30 | Frank Herdlicka | 66 | Head | Farmer | Iowa |
| 31 | Essie J Herdlicka | 64 | Wife | — | Iowa |
| 32 | Frank Jr Herdlicka | 29 | Son | Farmer | Iowa |
| 33 | Everett L Lortz | 35 | Head | Farmer | Iowa |
| 34 | Rilla M Lortz | 32 | Wife | — | Iowa |
| 35 | Burdette Lortz | 10 | Son | — | Iowa |
| 36 | Donna M Lortz | 7 | Daughter | — | Iowa |
| 37 | Hugh B Thomas | 43 | Head | Farmer | Iowa |
| 38 | Iva L Thomas | 36 | Wife | — | Iowa |
| 39 | Kenneth A Thomas | 14 | Son | — | Iowa |
| 40 | Dorothy I Thomas THIS PERSON | 13 | Daughter | — | Iowa |
| 41 | Orville H Thomas | 11 | Son | — | Iowa |
| 42 | Mildred M Thomas | 9 | Daughter | — | Iowa |
| 43 | Warren F Thomas | 7 | Son | — | Iowa |
| 44 | Russell L Thomas | 5 | Son | — | Iowa |
| 45 | Treva A Thomas | 4 | Daughter | — | Iowa |
| 46 | Velma J Thomas | 2 | Daughter | — | Iowa |
| 47 | Byron H Thomas | 0 | Son | — | Iowa |
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)