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Lois Smith — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Humboldt, Iowa
Our Model Tree links this Lois Smith across the 1920 and 1930 US Censuses in Humboldt, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 11-person household.
Age 14
b. ~1916
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Humboldt, Iowa |
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| 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 | Humboldt Township |
| Est. Birth Year | ~1916 |
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 Lois | Age | Birth yr |
|---|---|---|---|---|
| Lois Smith | Daughter | — | 14 | ~1916 |
| Gladys Cameron | Daughter | — | 21 | ~1909 |
| Kathryn Smith | Daughter | — | 16 | ~1914 |
| Bernice Van Houten | Daughter | — | 22 | ~1908 |
| Isaac Smith | Head | — | 46 | ~1884 |
| Anna Smith | Other | — | 42 | ~1888 |
| Lester Smith | Son | — | 20 | ~1910 |
| Marlin Smith | Son | — | 12 | ~1918 |
| Victor Smith | Son | — | 17 | ~1913 |
| Donald Smith | Son | — | 11 | ~1919 |
| Harold Smith | Son | — | 18 | ~1912 |
Census Appearances
Daughter, age 4
Humboldt, Iowa · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Humboldt, Iowa
Daughter, age 14
Humboldt, Iowa · implied b. ~1916 — 11 household members
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| 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 Lois Smith across 2 US Census years (1920 and 1930) in Humboldt, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Smith
Daughter · 1930 · age 14 · b. ~1916 · Iowa
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Sibling
Gladys Cameron
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Victor Smith
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Smith
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Van Houten
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Smith
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Smith
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Smith
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlin Smith
Sibling · 1930 · age 12
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 — Humboldt, Iowa
Open full size
1930 US Federal Census — Humboldt, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel659:0426)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Raymond Dierbaumer | 15 | Son | — | Iowa |
| 52 | Josephine Dierbaumer | 14 | Daughter | — | Iowa |
| 53 | Isaac T Smith | 46 | Head | Farmer | Iowa |
| 54 | Anna M Smith | 42 | Wife-H | — | Iowa |
| 55 | Bernice Van Houten | 22 | Daughter | Servant | Iowa |
| 56 | Gladys Cameron | 21 | Daughter | Servant | Iowa |
| 57 | Lester Smith | 20 | Son | Laborer | Iowa |
| 58 | Harold Smith | 18 | Son | — | Iowa |
| 59 | Victor Smith | 17 | Son | — | Minnesota |
| 60 | Kathryn Smith | 16 | Daughter | — | Minnesota |
| 61 | Lois Smith THIS PERSON | 14 | Daughter | — | Iowa |
| 62 | Marlin Smith | 12 | Son | — | Iowa |
| 63 | Donald Smith | 11 | Son | — | Iowa |
| 64 | Ginger Jacobson | 37 | Head | Farmer | Iowa |
| 65 | Bernice Jacobson | 34 | Wife-H | — | Iowa |
| 66 | Earl Jacobson | 15 | Son | — | Iowa |
| 67 | Virgil Jacobson | 10 | Son | — | Iowa |
| 68 | Paul Pasche | 20 | Laborer | Laborer | Iowa |
| 69 | Charles Brooks | 34 | Head | Laborer | Iowa |
| 70 | Edith Brooks | 32 | Wife-H | — | Iowa |
| 71 | Marguerite Brooks | 9 | Daughter | — | Iowa |
| 72 | Raymond Brooks | 8 | Son | — | Iowa |
| 73 | Donald Brooks | 6 | Son | — | Iowa |
| 74 | Roland Brooks | 2 | Son | — | Iowa |
| 75 | Albert Brooks | 18 | Nephew | Laborer | Iowa |
| 76 | Earl Crossley | 34 | Head | Farmer | Iowa |
| 77 | Marcella Crossley | 20 | Wife-H | — | Iowa |
| 78 | Leon Schreiber | 22 | Laborer | Laborer | Iowa |
| 79 | Lawrence S. Hefley | 35 | Head | Farmer | Iowa |
| 80 | Grace Hefley | 35 | Wife-H | — | Iowa |
| 81 | John Hefley | 4 | Son | — | Iowa |
| 82 | Charles Claus | 34 | Head | Farmer | Wisconsin |
| 83 | Elizabeth Claus | 33 | Wife-H | — | Iowa |
| 84 | Edalyn Steinman | 11 | Step-daughter | — | Wisconsin |
| 85 | Dorothy Steinman | 9 | Step-daughter | — | Wisconsin |
| 86 | Charlotte Claus | 1 | Daughter | — | Iowa |
| 87 | Anna O'Brien | 68 | Head-H | — | Iowa |
| 88 | Margaret O'Brien | 42 | Daughter | — | Iowa |
| 89 | James O'Brien | 40 | Son | Farmer | Iowa |
| 90 | Michael Cronan | 66 | Head | Farmer | Iowa |
| 91 | Margaret Cronan | 64 | Wife-H | — | Iowa |
| 92 | Michael Cronan | 26 | Son | Laborer | Iowa |
| 93 | Margaret Cronan | 9 | Gr-daughter | — | Iowa |
| 94 | William Radil | 45 | Head | Farmer | Czechoslovakia |
| 95 | Jeannette Radil | 38 | Wife-H | — | Czechoslovakia |
| 96 | Mary Radil | 17 | Daughter | — | New York |
| 97 | Helen Radil | 14 | Daughter | — | New York |
| 98 | Alice Radil | 11 | Daughter | — | Iowa |
| 99 | Mildred Radil | 9 | Daughter | — | Iowa |
| 100 | Emily Radil | 7 | Daughter | — | 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)