ST
Samuel Thompson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Samuel Thompson across the 1920, 1930 and 1940 US Censuses in Polk, Iowa (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 40
b. ~1890
Male
Head
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Thompson |
| Given Name | Samuel M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Janitor |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2800 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Janitor |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1890 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Samuel | Age | Birth yr |
|---|---|---|---|---|
| Agatha Thompson | Daughter | — | 17 | ~1913 |
| Samuel Thompson | Head | — | 40 | ~1890 |
| Laura Thompson | Other | — | 39 | ~1891 |
| James Thompson | Son | — | 3 | ~1927 |
| John Thompson | Son | — | 9 | ~1921 |
Census Appearances
1920
Polk, Iowa
Head, age 30
Polk, Iowa · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Samuel M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Broom Maker |
| Industry | Broom Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Head, age 40
Polk, Iowa · implied b. ~1890 — 5 household members
| Surname | Thompson |
| Given Name | Samuel M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Janitor |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2800 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 50
Polk-County, Iowa · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | S. M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Janitor |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1100 |
| Highest Grade | No 8 |
| 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 Samuel Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Samuel Thompson
Head · 1930 · age 40 · b. ~1890 · Iowa
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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
42 people indexed on this census page (ia:1930:iowacensus00reel677:0673)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mahlon R Grimm | 34 | Head | Switchman | Iowa |
| 2 | Dora E Grimm | 30 | Wife-H | — | Iowa |
| 3 | Ray Grimm | 2 | Son | — | Iowa |
| 4 | Harry E Mathis | 37 | Head | Janitor | Iowa |
| 5 | Marie Mathis | 28 | Wife-H | — | Indiana |
| 6 | James Mathis | 10 | Son | — | Iowa |
| 7 | Betty J Mathis | 9 | Daughter | — | Iowa |
| 8 | Vivian Mathis | 5 | Daughter | — | Iowa |
| 9 | Gladys Mathis | 3 | Daughter | — | Iowa |
| 10 | Charles Mathis | 1 | Son | — | Iowa |
| 11 | James W Mathis | 55 | Head | Laborer | Iowa |
| 12 | Jessie M Mathis | 52 | Wife-H | — | Iowa |
| 13 | Frank W Hamilton | 63 | Head | — | Indiana |
| 14 | Maud B Hamilton | 57 | Wife-H | Housekeeper | Missouri |
| 15 | John J Hingley | 61 | Head | Baggageman | Iowa |
| 16 | Frank Pack | 39 | Nephew | Tally Clerk | Iowa |
| 17 | Gladys B Pack | 32 | Niece-H | — | Iowa |
| 18 | Benjamin H Titus | 39 | Head | Janitor | Missouri |
| 19 | Rena Titus | 38 | Wife-H | — | Missouri |
| 20 | Merle Titus | 14 | Son | Helper | Missouri |
| 21 | Delbert Titus | 13 | Son | — | Missouri |
| 22 | Franklin Titus | 8 | Son | — | Iowa |
| 23 | Evelyn Titus | 6 | Daughter | — | Iowa |
| 24 | Geraldine Titus | 4 | Daughter | — | Iowa |
| 25 | Floyd J Plude | 33 | Head | Switchman | Iowa |
| 26 | Mabel Plude | 31 | Wife-H | — | Iowa |
| 27 | Paul K Brubaker | 13 | Stepson | — | Iowa |
| 28 | Samuel M Thompson THIS PERSON | 40 | Head | Janitor | Iowa |
| 29 | Laura Thompson | 39 | Wife-H | Candy Dipper | Iowa |
| 30 | Agatha Thompson | 17 | Daughter | — | Iowa |
| 31 | John S Thompson | 9 | Son | — | Iowa |
| 32 | James H Thompson | 3 | Son | — | Iowa |
| 33 | Samuel J Passon | 33 | Head | Proprietor | Russia |
| 34 | Sarah Passon | 32 | Wife-H | Clerk | Russia |
| 35 | Bertha Floria | 35 | Head-H | Day Work | Missouri |
| 36 | Grace M Floria | 12 | Daughter | — | Minnesota |
| 37 | Cecil Floria | 11 | Son | — | Iowa |
| 38 | Charles Cassady | 62 | Head | — | Iowa |
| 39 | Minnie Cassady | 51 | Wife-H | — | Iowa |
| 40 | Elsie C Martin | 50 | Head | Plasterer | Missouri |
| 41 | Joseph A Conway | 72 | Head | — | Iowa |
| 42 | Emma M Conway | 64 | Wife-H | — | Iowa |
Related Census Records
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)