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Harry Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Harry Thomas across the 1910, 1920 and 1930 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents Richard & Richard — first a son (b.~1910), then head of a 4-person household.
Age 20
b. ~1910
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | General Labor |
| Industry | Golf Links |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | General Labor |
| Township / Ward | Valley Junction City |
| Est. Birth Year | ~1910 |
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 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Margaret Thomas | Daughter | — | 18 | ~1912 |
| Richard Thomas | Head | — | 50 | ~1880 |
| Laura Thomas | Other | — | 44 | ~1886 |
| Harry Thomas | Son | — | 20 | ~1910 |
Census Appearances
1910
Polk, Iowa
Son, age
Polk, Iowa · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harry J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Son, age 9
Polk, Iowa · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| 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
Son, age 20
Polk, Iowa · implied b. ~1910 — 4 household members
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | General Labor |
| Industry | Golf Links |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Harry Thomas across 3 US Census years (1910, 1920 and 1930) in Polk, Iowa, 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) and mother Laura Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 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
Mother
Laura Thomas
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Thomas
Son · 1930 · age 20 · b. ~1910 · Iowa
★ You are viewing this record
Sibling
Margaret Thomas
Sibling · 1930 · age 18
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 — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel678:0391)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard A Thomas | 50 | Head | Engineer | Iowa |
| 2 | Laura Thomas | 44 | Wife-H | — | Ohio |
| 3 | Harry Thomas THIS PERSON | 20 | Son | General Labor | Iowa |
| 4 | Margaret Thomas | 18 | Daughter | — | Iowa |
| 5 | Fred Pollard | 55 | Head | Manager | Iowa |
| 6 | Genevieve Pollard | 50 | Wife-H | — | Utah |
| 7 | Elmer E Gray | 48 | Head | Locomotive Engineer | Texas |
| 8 | Cheatie Gray | 48 | Wife-H | — | Kentucky |
| 9 | Frank E Houston | 50 | Head | Dentist | Iowa |
| 10 | Eva Houston | 45 | Wife-H | — | Iowa |
| 11 | Eberly Houston | 17 | Son | — | Iowa |
| 12 | Anna Tussing | 79 | Mother-Law | — | Germany |
| 13 | William Carmody | 57 | Head | Manager | Iowa |
| 14 | Kathryn Carmody | 35 | Wife-H | — | Iowa |
| 15 | Doris Carmody | 13 | Daughter | — | Iowa |
| 16 | Rathleen Carmody | 9 | Daughter | — | Iowa |
| 17 | Billie Carmody | 4 | Son | — | Iowa |
| 18 | Elmer D Brumm | 54 | Head | Proprietor | Iowa |
| 19 | Mary A Brumm | 62 | Wife-H | — | New Jersey |
| 20 | Sarah E Den Eyck | 82 | Mother-Law | — | England |
| 21 | Andrew Straka | 53 | Head | Pipe Fitter | Czechoslovakia |
| 22 | Emma Straka | 52 | Wife-H | — | Czechoslovakia |
| 23 | Anna Straka | 26 | Daughter | Stenographer | Pennsylvania |
| 24 | Frank Straka | 23 | Son | Clerical | Nebraska |
| 25 | Albert Straka | 16 | Son | — | Nebraska |
| 26 | Harold Straka | 13 | Son | — | Nebraska |
| 27 | Barton J Sweatt | 60 | Head | Office Manager | Iowa |
| 28 | Jane Sweatt | 48 | Wife-H | — | New Jersey |
| 29 | Thomas O Sweatt | 19 | Son | — | Iowa |
| 30 | J S Compton | 50 | Head | Buyer | Ohio |
| 31 | Nelly Compton | 52 | Wife-H | — | Iowa |
| 32 | Thomas Milliken | 80 | Head | — | Pennsylvania |
| 33 | E Jane Milliken | 72 | Wife-H | — | Iowa |
| 34 | Thomas O'Conner | 52 | Lodger | Barber | Missouri |
| 35 | Walter Larsen | 40 | Head | Locomotive Engineer | Iowa |
| 36 | Lorene Larsen | 42 | Wife-H | — | Iowa |
| 37 | Dean E Larsen | 3 | Son | — | Iowa |
| 38 | Frank Bricknell | 70 | Head | — | Wisconsin |
| 39 | Phebe Bricknell | 69 | Wife-H | — | England |
| 40 | Stewart Bricknell | 45 | Son | Jeweler | Illinois |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
Pedigree Summary
Harry + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)