EJ
Emily Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Contra-Costa-County, California
Our Model Tree links this Emily Johnson across the 1930 and 1940 US Censuses in Contra-Costa-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Contra-Costa-County, California |
| Surname | Johnson |
| Given Name | Emily S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Contra Costa |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Pablo |
| Est. Birth Year | ~1928 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Emily | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Johnson | Daughter | — | 15 | ~1925 |
| Carroll Johnson | Head | — | 39 | ~1901 |
| Clara Johnson | Spouse | — | 35 | ~1905 |
| Emily Johnson | Daughter | — | 12 | ~1928 |
| Alan Johnson | Son | — | 14 | ~1926 |
| Carolyn Johnson | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Contra Costa, …
Daughter, age 2
Contra Costa, California · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Emily |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Daughter, age 12
Contra-Costa-County, California · implied b. ~1928 — 6 household members
| Surname | Johnson |
| Given Name | Emily S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Contra Costa |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | California |
| 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 Emily Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Emily Johnson
Daughter · 1940 · age 12 · b. ~1928 · California
★ You are viewing this record
Sibling
Eleanor Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alan Johnson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carolyn Johnson
Sibling · 1940 · age 11
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 — Contra-Costa-County, California
Open full size
1940 US Federal Census — Contra-Costa-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00197-00359)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elsie Annie Foster | 48 | Ex Wife | — | California |
| 2 | Billy B Foster | 12 | Son | — | California |
| 3 | Donald A Mccoy | 32 | Head | Proprietor | California |
| 4 | Florabelle Mccoy | 24 | Wife | — | California |
| 5 | Enoch A Mccoy | 60 | Father | — | Missouri |
| 6 | Martha E Mccoy | 55 | Mother | — | Arkansas |
| 7 | Billy M Melton | 34 | Head | Proprietor | Oklahoma |
| 8 | Christina Melton | 31 | Wife | — | Oklahoma |
| 9 | Nuel A Melton | 12 | Son | — | Oklahoma |
| 10 | Theda B Melton | 10 | Daughter | — | Oklahoma |
| 11 | Exta Melton | 23 | Sister | Upholsterer | Oklahoma |
| 12 | Cecil A Walls | 23 | Head | Upholsterer | Oklahoma |
| 13 | Martha L Walls | 21 | Wife | — | Oklahoma |
| 14 | Rodney A Walls | 2 | Son | — | California |
| 15 | Bonnie E Alexander | 10 | Niece | — | Arkansas |
| 16 | Reuben Muse | 60 | Uncle | Carpenter | Arkansas |
| 17 | Frank Regallo | 61 | Head | Janitor | Portugal |
| 18 | Flora Regallo | 53 | Wife | — | Portugal |
| 19 | Lawrence Regallo | 31 | Son | Pharmacist | California |
| 20 | Theophilo Regallo | 20 | Son | — | California |
| 21 | Ernest S Poe | 38 | Head | Foreman | Oklahoma |
| 22 | Eula Poe | 34 | Wife | — | Oklahoma |
| 23 | Curtis C Poe | 19 | Son | — | Oklahoma |
| 24 | Theo Poe | 15 | Daughter | — | Oklahoma |
| 25 | Deray L Poe | 10 | Son | — | California |
| 26 | Maurna L Poe | 5 | Daughter | — | California |
| 27 | Filipo Ragusci | 49 | Head | Cement Worker | Italy |
| 28 | Rachel Ragusci | 54 | Wife | — | Italy |
| 29 | Mary Ragusci | 24 | Daughter | Cosmetician | California |
| 30 | Nick Ragusci | 22 | Son | Canning Hand | California |
| 31 | Jack Ragusci | 20 | Son | Newswalker | California |
| 32 | Virgil D Warren | 72 | Head | — | Mississippi |
| 33 | Frank L Rison | 56 | Head | Research Worker | Ohio |
| 34 | Amy R Rison | 43 | Wife | — | Ohio |
| 35 | Carroll B Johnson | 39 | Head | Teamster | California |
| 36 | Clara C Johnson | 35 | Wife | — | California |
| 37 | Eleanor P Johnson | 15 | Daughter | — | California |
| 38 | Alan K Johnson | 14 | Son | — | California |
| 39 | Emily S Johnson THIS PERSON | 12 | Daughter | — | California |
| 40 | Carolyn H Johnson | 11 | Daughter | — | 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)