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Alice Thompson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Contra Costa, California
Our Model Tree links this Alice Thompson across the 1930 and 1940 US Censuses in Contra Costa, California (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 15-person household.
Age 10
b. ~1920
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Contra Costa, California |
| Surname | Thompson |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Antioch Town Pt |
| Est. Birth Year | ~1920 |
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.
15 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Alice | Age | Birth yr |
|---|---|---|---|---|
| Lizzie Thompson | Daughter | — | 28 | ~1902 |
| Helen Thompson | Daughter | — | 3 | ~1927 |
| Alice Thompson | Daughter | — | 10 | ~1920 |
| Mary Thompson | Daughter | — | 13 | ~1917 |
| Margaret Thompson | Daughter | — | 8 | ~1922 |
| Thomas Thompson | Head | — | 62 | ~1868 |
| William Thompson | Son | — | 25 | ~1905 |
| John Thompson | Son | — | 7 | ~1923 |
| Thomas Thompson | Son | — | 23 | ~1907 |
| Baby Thompson | Son | — | 1 | ~1929 |
| James Thompson | Son | — | 20 | ~1910 |
| Robert Thompson | Son | — | 18 | ~1912 |
| George Thompson | Son | — | 15 | ~1915 |
| Edward Thompson | Son | — | 5 | ~1925 |
| Lizzie Thompson | Spouse | — | 61 | ~1869 |
Census Appearances
1930
Contra Costa, …
Daughter, age 10
Contra Costa, California · implied b. ~1920 — 15 household members
| Surname | Thompson |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Daughter, age 21
Contra-Costa-County, California · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Adalene |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Contra Costa |
| 1935 Residence (County) | Contra Costa |
| Occupation | Housekeeper |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 260 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Alice Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Alice Thompson
Daughter · 1930 · age 10 · b. ~1920 · California
★ You are viewing this record
Sibling
John Thompson
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Thompson
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Thompson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thompson
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Thompson
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thompson
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lizzie Thompson
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Thompson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Thompson
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Thompson
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Thompson
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Baby Thompson
Sibling · 1930 · age 1
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 — Contra Costa, California
Open full size
1930 US Federal Census — Contra Costa, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel114:0292)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Thompson | 62 | Head | — | Ohio |
| 2 | Lizzie Thompson | 61 | Wife | — | Pennsylvania |
| 3 | Thomas Thompson | 23 | Son | Draper | California |
| 4 | Lizzie Thompson | 28 | Daughter | — | California |
| 5 | William Thompson | 25 | Son | Contractor | California |
| 6 | James Thompson | 20 | Son | — | California |
| 7 | Robert Thompson | 18 | Son | — | California |
| 8 | George Thompson | 15 | Son | — | California |
| 9 | Mary Thompson | 13 | Daughter | — | California |
| 10 | Alice Thompson THIS PERSON | 10 | Daughter | — | California |
| 11 | Margaret Thompson | 8 | Daughter | — | California |
| 12 | John Thompson | 7 | Son | — | California |
| 13 | Edward Thompson | 5 | Son | — | California |
| 14 | Helen Thompson | 3 | Daughter | — | California |
| 15 | Baby Thompson | 1 | Son | — | California |
| 16 | Alfred Dunn | 24 | Head | — | California |
| 17 | Lillian Dunn | 21 | Wife | — | California |
| 18 | Alfred Dunn | 2 | Son | — | California |
| 19 | Robert Dunn | 1 | Son | — | California |
| 20 | Verna Dunn | 18 | Wife | — | California |
| 21 | Alfred Dunn | 1 | Son | — | California |
| 22 | James Dunn | 0 | Son | — | California |
| 23 | Clara Dunn | 30 | Head | — | California |
| 24 | Clara Dunn | 10 | Daughter | — | California |
| 25 | Grace Dunn | 11 | Daughter | — | California |
| 26 | Florence Dunn | 12 | Daughter | — | California |
| 27 | Paul Evans | 35 | Head | — | Wales |
| 28 | Clara Evans | 29 | Wife | — | Ohio |
| 29 | Clara Evans | 7 | Daughter | — | California |
| 30 | Margaret Evans | 3 | Daughter | — | California |
| 31 | Chu Chu | 22 | Head | Truck Driver | California |
| 32 | Edna Chu | 20 | Wife | — | Utah |
| 33 | Gladys Chu | 2 | Daughter | — | California |
| 34 | Richard Chu | 1 | Son | — | California |
| 35 | Fred Whitney | 42 | Head | — | California |
| 36 | Clara Whitney | 38 | Wife | — | California |
| 37 | Fred Whitney | 18 | Son | — | California |
| 38 | Clara Whitney | 16 | Daughter | — | California |
| 39 | Grace Whitney | 14 | Daughter | — | California |
| 40 | Alice Whitney | 12 | Daughter | — | California |
| 41 | George Whitney | 10 | Son | — | California |
| 42 | James Whitney | 8 | Son | — | California |
| 43 | Robert Whitney | 6 | Son | — | California |
| 44 | Alice Whitney | 4 | Daughter | — | California |
| 45 | Charles Murch | 35 | Head | Merchant | Ohio |
| 46 | Mary Murch | 31 | Wife | — | New York |
| 47 | Fred Rehfe | 28 | Head | Laborer | Illinois |
| 48 | Charlotte Rehfe | 27 | Wife | Teacher | California |
| 49 | John Hodgson | 47 | Head | Millwright | England |
| 50 | Mary Hodgson | 44 | Wife | — | England |
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)