JL
John Larsen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this John Larsen across the 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed), with identified parents H & Ludvig — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Larsen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | Labor |
| Industry | Lumber mill |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 480 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Labor |
| Township / Ward | Tacoma City |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Larsen | Son | — | 24 | ~1916 |
| Betty Larsen | Spouse | — | 62 | ~1878 |
| Warren Larsen | Son | — | 16 | ~1924 |
| H Larsen | Head | — | 62 | ~1878 |
| Lloyd Larsen | Son | — | 19 | ~1921 |
Census Appearances
1920
Pierce, Washington
Other, age 3
Pierce, Washington · implied b. ~1917 — 24 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | John |
| Relationship to Head | Scholar |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
Son, age 14
Pierce, Washington · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Minnesota |
| Occupation | Cadie |
| Industry | Golf Links |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Pierce-County, Washington
Son, age 24
Pierce-County, Washington · implied b. ~1916 — 5 household members
| Surname | Larsen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Occupation | Labor |
| Industry | Lumber mill |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 480 |
| Highest Grade | Hs 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 John Larsen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father H Larsen (~0.92 confidence) and father Ludvig Larson (~0.92 confidence) and mother Betty Larsen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
H Larsen
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Ludvig Larson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Betty Larsen
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Larsen
Son · 1940 · age 24 · b. ~1916 · Washington
★ You are viewing this record
Sibling
Warren Larsen
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lloyd Larsen
Sibling · 1940 · age 19
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 — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04388-00014)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mitchell Costanti | 27 | Head | Laborer | Yugoslavia |
| 2 | Bertha Costanti | 26 | Wife | — | Washington |
| 3 | Tamara Costanti | 3 | Daughter | — | Washington |
| 4 | Jean Costanti | 0 | Daughter | — | Washington |
| 6 | William Hendrick | 65 | Head | Watchman | Illinois |
| 7 | Fanny Hendrick | 69 | Wife | — | Illinois |
| 8 | Ira Trigg | 61 | Head | Labor | Illinois |
| 9 | Sadie Trigg | 53 | Wife | — | Nebraska |
| 10 | Nick Silja | 70 | Head | Fisherman | Yugoslavia |
| 11 | Margaret Silja | 65 | Wife | — | Yugoslavia |
| 12 | Prudence Silja | 28 | Daughter | Labor | Washington |
| 13 | Geraldine Silja | 21 | Daughter | Labor | Washington |
| 14 | Vincent Plancich | 30 | Son-in-law | Fisherman | Washington |
| 15 | Ann Plancich | 29 | Daughter | Labor | Washington |
| 16 | Geraldine Ann Plancich | 3 | Granddaughter | — | Washington |
| 17 | Antone Mladineo | 54 | Head | Fisherman | Yugoslavia |
| 18 | Madeline Mladineo | 44 | Wife | — | Yugoslavia |
| 19 | Katherine Mladineo | 13 | Daughter | — | Washington |
| 20 | Antone Jr. Mladineo | 10 | Son | — | Washington |
| 21 | Hedwig Erickson | 75 | Head | — | Sweden |
| 22 | J. E. Johnson | 62 | Lodger | Longshoreman | Sweden |
| 23 | H. T. Larsen | 62 | Head | Engineer | Sweden |
| 24 | Betty Larsen | 62 | Wife | — | Sweden |
| 25 | John Larsen THIS PERSON | 24 | Son | Labor | Washington |
| 26 | Lloyd Larsen | 19 | Son | Fisherman | Washington |
| 27 | Warren Larsen | 16 | Son | — | Washington |
| 28 | James Summers | 38 | Head | Shingle Weaver | Oklahoma |
| 29 | Robert Christiansen | 37 | Head | Stone Cutter | Norway |
| 30 | Christiansen | 30 | Wife | — | Washington |
| 31 | Robert Christiansen | 7 | Son | — | Washington |
| 32 | Dorothy Christiansen | 5 | Daughter | — | Washington |
| 33 | Ellis Walker | 40 | Head | Laborer | Alabama |
| 34 | Adelaide Walker | 39 | Wife | — | Washington |
| 35 | Ellissa Walker | 6 | Daughter | — | Washington |
| 36 | Minnie Walker | 4 | Daughter | — | Washington |
| 37 | Ernest Beckman | 48 | Head | Longshoreman | Finland |
| 38 | Ida Beckman | 48 | Wife | — | Finland |
| 39 | Irene Beckman | 23 | Daughter | Stenographer | Nevada |
| 40 | Percy Parent | 38 | Head | Labor | Oregon |
Related Census Records
Pedigree Summary
John + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)