RJ
Ronald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Ronald Johnson across the 1930 and 1940 US Censuses in Los-Angeles-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 | Los-Angeles-County, California |
| Surname | Johnson |
| Given Name | Ronald E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Compton Judicial Twp. |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Compton Judicial Twp |
| 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 Ronald | Age | Birth yr |
|---|---|---|---|---|
| Everett Johnson | Head | — | 29 | ~1911 |
| Clara Johnson | Spouse | — | 29 | ~1911 |
| Barbara Johnson | Daughter | — | 1 | ~1939 |
| Ronald Johnson | Son | — | 11 | ~1929 |
| Everett Johnson | Son | — | 9 | ~1931 |
Census Appearances
1930
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ronald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | New York |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 11
Los-Angeles-County, California · implied b. ~1929 — 5 household members
| Surname | Johnson |
| Given Name | Ronald E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Compton Judicial Twp. |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | No 3 |
| 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 Ronald Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ronald Johnson
Son · 1940 · age 11 · b. ~1929 · California
★ You are viewing this record
Sibling
Barbara Johnson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Everett Johnson
Sibling · 1940 · age 9
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00224-01020)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence E. Housken | 5 | Son | — | Colorado |
| 2 | Nola J. Housken | 2 | Daughter | — | Colorado |
| 3 | Arthur P. Hudson | 52 | Head | Clerk | Pennsylvania |
| 4 | Alice E. Hudson | 50 | Wife | — | Germany |
| 5 | Hugh W. Hixon | 63 | Head | Oil Worker | Indiana |
| 6 | Rae C. Hixon | 67 | Wife | — | Indiana |
| 7 | Maynard F. Campbell | 53 | Head | — | Pennsylvania |
| 8 | Nathan W. Currie | 46 | Head | Accountant | Canada-Eng |
| 9 | Muriel E. Currie | 42 | Wife | Secretary | Canada-Eng |
| 10 | Richard A. Contreras | 28 | Head | Laborer | California |
| 11 | Josephine Contreras | 28 | Wife | — | California |
| 12 | William Zwart | 27 | Head | Dairyman | Minnesota |
| 13 | Elizabeth A. Zwart | 23 | Wife | — | Minnesota |
| 14 | Robert J. Zwart | 1 | Son | — | California |
| 15 | Lloyd Heath | 37 | Head | Refiner | Texas |
| 16 | Evelyn M. Heath | 31 | Wife | Operator | Iowa |
| 17 | Geraldine L. Heath | 8 | Daughter | — | California |
| 18 | Everett A. Johnson | 29 | Head | Oil Worker | Arizona |
| 19 | Clara E. Johnson | 29 | Wife | — | Oklahoma |
| 20 | Ronald E. Johnson THIS PERSON | 11 | Son | — | California |
| 21 | Everett G. Johnson | 9 | Son | — | California |
| 22 | Barbara L. Johnson | 1 | Daughter | — | California |
| 23 | Clarence C. Phutt | 62 | Head | — | Missouri |
| 24 | Kate Phutt | 45 | Wife | Postal Clerk | New Mexico |
| 25 | Clarence C. Jr. Phutt | 18 | Son | Clerk | Colorado |
| 26 | Emma J. Bailey | 65 | Head | — | Pennsylvania |
| 27 | Thomas J. Drysdale | 18 | Grandson | — | Colorado |
| 28 | Emma J. Drysdale | 17 | Granddaughter | — | Colorado |
| 29 | William H. Holland | 26 | Head | Meat Cutter | Missouri |
| 30 | Clarebelle B. Holland | 27 | Wife | — | New Jersey |
| 31 | Elita M. Christian | 38 | Head | — | Kansas |
| 32 | Marjorie D. Boberg | 22 | Partner | — | Iowa |
| 33 | George W. Curtis | 70 | Head | Proprietor | Iowa |
| 34 | Ella B. Curtis | 69 | Wife | — | Michigan |
| 35 | Albert J. Rosson | 43 | Head | Sheet Metal | Texas |
| 36 | Ella S. Rosson | 45 | Wife | — | Texas |
| 37 | Thomas G. Nelson | 29 | Head | Core Maker | Idaho |
| 38 | Edith M. Nelson | 20 | Wife | — | Arizona |
| 39 | Diane Nelson | 3 | Daughter | — | California |
| 40 | Thomas Jr. Nelson | 0 | 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)