RJ
Ronald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Lucie-County, Florida
Our Model Tree links this Ronald Johnson across the 1930 and 1940 US Censuses in St.-Lucie-County, Florida (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Lucie-County, Florida |
| Surname | Johnson |
| Given Name | Ronald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft. Pierce |
| 1935 Residence (County) | St. Lucie |
| Additional Details | |
| Occupation | Box Maker |
| Industry | Citrus |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 390 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Box Maker |
| Township / Ward | Ft Pierce |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ronald | Age | Birth yr |
|---|---|---|---|---|
| Ronald Johnson | Son | — | 25 | ~1915 |
| Katherine Johnson | Spouse | — | 51 | ~1889 |
| Lauris Johnson | Head | — | 51 | ~1889 |
Census Appearances
1930
St Lucie, …
Son, age 15
St Lucie, Florida · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ronald C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
St.-Lucie-County, Florida
Son, age 25
St.-Lucie-County, Florida · implied b. ~1915 — 3 household members
| Surname | Johnson |
| Given Name | Ronald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft. Pierce |
| 1935 Residence (County) | St. Lucie |
| Occupation | Box Maker |
| Industry | Citrus |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 390 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 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 25 · b. ~1915 · Florida
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Lucie-County, Florida
Open full size
1940 US Federal Census — St.-Lucie-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00616-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William F. Welles | 6 | Son | — | Florida |
| 2 | Lauris Johnson | 51 | Head | Carpenter | Iowa |
| 3 | Katherine Johnson | 51 | Wife | — | Iowa |
| 4 | Ronald Johnson THIS PERSON | 25 | Son | Box Maker | Iowa |
| 5 | Carl Carraway | 28 | Head | Mechanic | Florida |
| 6 | Alma Carraway | 30 | Wife | Packer | Florida |
| 7 | Carlene Carraway | 3 | Daughter | — | Florida |
| 8 | Glenn Carraway | 2 | Son | — | Florida |
| 9 | Joseph Morgan | 44 | Head | Carpenter | Florida |
| 10 | Hannah Morgan | 46 | Wife | — | Florida |
| 11 | Tommie Smith | 73 | Mother | — | Georgia |
| 12 | Herbert Lush | 40 | Head | Manager | England |
| 13 | Ruth Lush | 32 | Wife | Stenographer | Iowa |
| 14 | Herbert Jr. Lush | 10 | Son | — | Florida |
| 15 | Beverly Lush | 5 | Daughter | — | Florida |
| 16 | Nelson Smiley | 30 | Head | Truck Driver | Georgia |
| 17 | Marie Smiley | 22 | Wife | — | Florida |
| 18 | Allan Smiley | 3 | Son | — | Florida |
| 19 | Linda Smiley | 4 | Daughter | — | Florida |
| 20 | Frank C. Smiley | 64 | Head | Time Keeper | Georgia |
| 21 | Catherine Smiley | 60 | Wife | — | Georgia |
| 22 | Frank Jr. Smiley | 23 | Daughter | Salesgirl | Georgia |
| 23 | Merrill Smiley | 18 | Son | Hunter | Georgia |
| 24 | Clifton B. Davis | 41 | Head | Mason | Iowa |
| 25 | Etta Davis | 40 | Wife | Teacher | Iowa |
| 26 | Virginia Davis | 15 | Daughter | — | Florida |
| 27 | Patricia Davis | 12 | Daughter | — | Florida |
| 28 | Grace Garland | 60 | Head | Practical Nurse | Iowa |
| 29 | Isabelle Nayland | 34 | Daughter | Teacher | Iowa |
| 30 | Sara E. Johnson | 66 | Head | — | Georgia |
| 31 | Sara Virginia Fosnot | 45 | Daughter | Seamstress | Florida |
| 32 | Noland King | 32 | Head | Clerk | Florida |
| 33 | Ruby King | 29 | Wife | Teacher | Florida |
| 34 | Noland Jr. King | 5 | Son | — | Florida |
| 35 | Joseph Wetherington | 54 | Head | Carpenter | Georgia |
| 36 | Dovie Wetherington | 56 | Wife | — | Georgia |
| 37 | Carrie Mae Lindsey | 25 | Daughter | — | Georgia |
| 38 | Jim J. Lindsey | 3 | Son | — | Florida |
| 39 | Alpha Finger | 45 | Head | Bill Cutter | West Virginia |
| 40 | Ethel G. Finger | 34 | Wife | Packer | West Virginia |
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)