LJ
Louis Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cowlitz-County, Washington
Our Model Tree links this Louis Johnson across the 1930 and 1940 US Censuses in Cowlitz-County, Washington (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cowlitz-County, Washington |
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Longview City |
| 1935 Residence (County) | Cowlitz |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Longview City |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Louis | Age | Birth yr |
|---|---|---|---|---|
| Carol Johnson | Daughter | — | 2 | ~1938 |
| Hazel Johnson | Daughter | — | 5 | ~1935 |
| Judy Johnson | Daughter | — | ~1940 | |
| Audra Johnson | Daughter | — | 18 | ~1922 |
| Harvey Johnson | Head | — | 47 | ~1893 |
| Forrest Johnson | Son | — | 12 | ~1928 |
| Jimmy Johnson | Son | — | 8 | ~1932 |
| Louis Johnson | Son | — | 10 | ~1930 |
| Lena Johnson | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Cowlitz, Washington
Son, age 1
Cowlitz, Washington · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Cowlitz-County, Washington
Son, age 10
Cowlitz-County, Washington · implied b. ~1930 — 9 household members
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Longview City |
| 1935 Residence (County) | Cowlitz |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Louis Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Louis Johnson
Son · 1940 · age 10 · b. ~1930 · Washington
★ You are viewing this record
Sibling
Hazel Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Forrest Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jimmy Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audra Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Judy Johnson
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carol Johnson
Sibling · 1940 · age 2
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 — Cowlitz-County, Washington
Open full size
1940 US Federal Census — Cowlitz-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04336-00735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Billy Fay Bates | 3 | Daughter | — | Texas |
| 2 | Emma Jean Bates | 1 | Daughter | — | Washington |
| 3 | Charles J. Bush | 49 | Head | Machine Operator | Arizona |
| 4 | Olga Olivia Bush | 49 | Wife | — | Idaho |
| 5 | Charles W. Bush | 15 | Son | — | Washington |
| 6 | Robert L. White | 53 | Head | Loader | Utah |
| 7 | Helen F. White | 47 | Wife | — | Washington |
| 8 | Howard Emerson | 37 | Head | Edgerman | Oklahoma |
| 9 | Clora Emerson | 33 | Wife | — | Oklahoma |
| 10 | Charles Emerson | 6 | Son | — | Oklahoma |
| 11 | Howard Jr. Emerson | 2 | Son | — | Oklahoma |
| 12 | Pattie Emerson | 0 | Daughter | — | Washington |
| 13 | Paul Smith | 26 | Head | Maintenance | Texas |
| 14 | Mae Smith | 24 | Wife | — | North Dakota |
| 15 | Vance Smith | 4 | Son | — | Washington |
| 16 | Fred West | 21 | Boarder | Maintenance | Minnesota |
| 17 | Cecil Tillman | 31 | Head | Trimmerman | Canada English |
| 18 | Mildred Tillman | 23 | Wife | — | Oregon |
| 19 | Cecil Jr. Tillman | 4 | Son | — | Washington |
| 20 | Jackie Tillman | 1 | Son | — | Washington |
| 21 | Arthur J. Garrigues | 34 | Head | Timekeeper | Connecticut |
| 22 | Clara Garrigues | 28 | Wife | — | Washington |
| 23 | Lois Garrigues | 4 | Daughter | — | Washington |
| 24 | Joyce Garrigues | 2 | Daughter | — | Oregon |
| 25 | Kent Emos Garrigues | 24 | Block | — | Oregon |
| 26 | Ansel Peterson | 52 | Head | Stacker | Sweden |
| 27 | Emma Christina Peterson | 46 | Wife | — | Sweden |
| 28 | R. Stanley | 28 | Son | Deck Hand | Idaho |
| 29 | Harvey G. Johnson | 47 | Head | Control Man | Pennsylvania |
| 30 | Lena Johnson | 34 | Wife | — | Kansas |
| 31 | Audra Johnson | 18 | Daughter | — | Kansas |
| 32 | Forrest Johnson | 12 | Son | — | Washington |
| 33 | Louis Johnson THIS PERSON | 10 | Son | — | Washington |
| 34 | Jimmy Johnson | 8 | Son | — | Washington |
| 35 | Hazel Johnson | 5 | Daughter | — | Washington |
| 36 | Carol Johnson | 2 | Daughter | — | Washington |
| 37 | Judy Johnson | 0 | Daughter | — | Washington |
| 38 | Walter Cline | 60 | Head | Spotter | North Carolina |
| 39 | Zenobia Cline | 46 | Wife | — | Arkansas |
| 40 | Joe Cline | 20 | Son | Pick Up | Arkansas |
Related Census Records
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)