JJ
James Jensen — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this James Jensen across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Chris & J — first a head (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Jensen |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Grocery |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 278 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Salesman |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1912 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Lance Jensen | Son | — | ~1940 | |
| Helen Jensen | Spouse | — | 22 | ~1918 |
| James Jensen | Head | — | 28 | ~1912 |
Census Appearances
1920
King, Washington
Son, age 8
King, Washington · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 18
King, Washington · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Order Clerk |
| Industry | Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Head, age 28
King-County, Washington · implied b. ~1912 — 3 household members
| Surname | Jensen |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Salesman |
| Industry | Wholesale Grocery |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 278 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 James Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chris Jensen (~0.92 confidence) and father J Jensen (~0.92 confidence) and mother Pauline Jensen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chris Jensen
b. ~1871
Source father
● Household
· direct · ~0.92
Father
J Jensen
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Pauline Jensen
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Jensen
Head · 1940 · age 28 · b. ~1912 · Washington
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04383-00442)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Beverley Peirone | 16 | Daughter | — | Washington |
| 42 | John B. Peirone | 50 | Head | Upholsterer | Italy |
| 43 | Marie B. Peirone | 52 | Wife | — | Italy |
| 44 | Thomas B. Spencer | 29 | Head | Electrical Engineer | North Dakota |
| 45 | Martha S. Spencer | 29 | Wife | — | Alaska |
| 46 | Beverley Spencer | 1 | Daughter | — | Washington |
| 47 | Leo O'Hara | 48 | Head | Laborer | Illinois |
| 48 | Margaret O'Hara | 35 | Wife | Saleslady | Washington |
| 49 | Neil O'Hara | 7 | Son | — | Washington |
| 50 | William S. Evenson | 67 | Head | — | Wisconsin |
| 51 | John S. Jaros | 52 | Head | — | Norway |
| 52 | Agnes Jaros | 42 | Wife | Waitress | Norway |
| 53 | Arthur D. Williams | 32 | Head | Stove Mounter | Washington |
| 54 | Mary Williams | 27 | Wife | Paint Operator | Minnesota |
| 55 | Walter E. Munges | 50 | Head | Mechanic | Minnesota |
| 56 | Isabella Munges | 48 | Wife | Bookkeeper | Canada |
| 57 | Gordon Munges | 18 | Son | — | Washington |
| 58 | Marion Munges | 14 | Daughter | — | Washington |
| 59 | Sarah J. Lanaway | 67 | Mother-in-law | — | England |
| 60 | Albert Knoblauch | 42 | Head | Builder | Missouri |
| 61 | Dorothy Knoblauch | 39 | Wife | Book-Keeper | Indiana |
| 62 | Leo Penegor | 37 | Head | Squad Leader | Michigan |
| 63 | Opal Penegor | 34 | Wife | — | Washington |
| 64 | Shirley Penegor | 12 | Daughter | — | Washington |
| 65 | Robert L. Le Blanc | 30 | Head | Structural Stat Engineer | Nebraska |
| 66 | Dorothy Le Blanc | 28 | Wife | — | Montana |
| 67 | Joan Le Blanc | 5 | Daughter | — | Washington |
| 68 | Carole Le Blanc | 4 | Daughter | — | Washington |
| 69 | James Jensen THIS PERSON | 28 | Head | Salesman | Washington |
| 70 | Helen Jensen | 22 | Wife | — | Washington |
| 71 | Lance Jensen | 0 | Son | — | Washington |
| 72 | Eugene Annibel | 31 | Head | Projectionist | Washington |
| 73 | Elizabeth Annibel | 30 | Wife | Switchboard Operator | Washington |
| 74 | Edna Anderson | 21 | Servant | Servant | Washington |
| 75 | Sally Annibel | 3 | Daughter | — | Washington |
| 76 | Alfred H. Kinnibal | 27 | Head | City Fireman | Washington |
| 77 | Ida Kinnibal | 26 | Wife | — | Washington |
| 78 | Sandra Kinnibal | 4 | Daughter | — | Washington |
| 79 | Karen Kinnibal | 1 | Daughter | — | Washington |
| 80 | Gilbert H. Kinnibal | 73 | Head | Title Insurance | England |
Pedigree Summary
James
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)