BJ
Billy Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sacramento-County, California
Our Model Tree links this Billy Jones across the 1930 and 1940 US Censuses in Sacramento-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sacramento-County, California |
| Surname | Jones |
| Given Name | Billy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | American |
| 1935 Residence (County) | Sacramento |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | American |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to Billy | Age | Birth yr |
|---|---|---|---|---|
| Job Jones | Son | — | 18 | ~1922 |
| Vina Jones | Spouse | — | 40 | ~1900 |
| Billy Jones | Son | — | 11 | ~1929 |
| Joseph Jones | Head | — | 44 | ~1896 |
| Clifton Jones | Son | — | 20 | ~1920 |
Census Appearances
1930
Sacramento, California
Son, age 1
Sacramento, California · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Billy S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | New Mexico |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Sacramento-County, California
Son, age 11
Sacramento-County, California · implied b. ~1929 — 5 household members
| Surname | Jones |
| Given Name | Billy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | American |
| 1935 Residence (County) | Sacramento |
| Industry | 0 |
| Highest Grade | 5 |
| 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 Billy Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Billy Jones
Son · 1940 · age 11 · b. ~1929 · California
★ You are viewing this record
Sibling
Clifton Jones
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Job Jones
Sibling · 1940 · 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
1940 US Federal Census — Sacramento-County, California
Open full size
1940 US Federal Census — Sacramento-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00280-00393)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E. Costello | 43 | Head | Teacher | Colorado |
| 2 | Ruth M. Costello | 39 | Wife | Teacher | California |
| 3 | Jewell Costello | 13 | Daughter | — | California |
| 4 | Barbara Costello | 10 | Daughter | — | California |
| 5 | George Costello | 7 | Son | — | California |
| 6 | Earl E. Hodgkinson | 39 | Head | Radio Operator | California |
| 7 | Ona Hodgkinson | 38 | Wife | Fancy Presser | Washington |
| 8 | Howard Runnings | 41 | Head | Laborer | Oklahoma |
| 9 | Fay Runnings | 34 | Wife | Conner | New York |
| 10 | Floyd Runnings | 17 | Son | — | Texas |
| 11 | Howard Runnings | 10 | Son | — | Oklahoma |
| 12 | Manuel Davis | 45 | Head | Carpenter | Portugal |
| 13 | Mary Davis | 38 | Wife | — | Portugal |
| 14 | Bernice Davis | 18 | Daughter | — | California |
| 15 | Gordon Davis | 14 | Son | — | California |
| 16 | Robert Davis | 8 | Son | — | California |
| 17 | Blanche Schmidt | 64 | Head | — | California |
| 18 | Edward C. Woodward | 70 | Brother | — | California |
| 19 | Fitzgerald Dal Piaz | 25 | Lodger | Instrument Maker | California |
| 20 | Otis Brownback | 28 | Lodger | Carpenter | Kansas |
| 21 | Walter Lehman | 48 | Head | Office Clerk | California |
| 22 | May E. Lehman | 50 | Wife | Junior Clerk | California |
| 23 | Walter R. Lehman | 23 | Son | Helper | California |
| 24 | William N. Lehman | 23 | Son | Teacher | California |
| 25 | Margaret Lehman | 21 | Niece | Junior Clerk | California |
| 26 | Andrew Sterner | 59 | Head | Pattern Maker | Sweden |
| 27 | Sara Sterner | 53 | Wife | — | Oregon |
| 28 | Arthur Balser | 48 | Head | Maintenance Man | Michigan |
| 29 | Grace Balser | 48 | Wife | Supervisor | California |
| 30 | Leroy Ritchie | 23 | Son | Case Maker | California |
| 31 | Ella Hawkins | 76 | Mother | — | Michigan |
| 32 | Otis L. Shelley | 63 | Lodger | Carpenter | Iowa |
| 33 | Henry O'Connor | 38 | Head | Carpenter | Kansas |
| 34 | Daisy O'Connor | 34 | Wife | — | Missouri |
| 35 | Betty L. O'Connor | 11 | Daughter | — | Kansas |
| 36 | Joseph A. Jones | 44 | Head | Sheriff | Texas |
| 37 | Vina Jones | 40 | Wife | — | New Mexico |
| 38 | Clifton Jones | 20 | Son | Repair Man | New Mexico |
| 39 | Job Jr. Jones | 18 | Son | Carrier | New Mexico |
| 40 | Billy Jones THIS PERSON | 11 | Son | — | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)