HJ
Harold Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Harold Jackson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Harry & Henry — first a son (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Jackson |
| Given Name | Harold E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Transfer |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Truck Driver |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1918 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Harry Jackson | Head | — | 53 | ~1887 |
| Harold Jackson | Son | — | 22 | ~1918 |
| Cora Jackson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
King, Washington
Son, age 2
King, Washington · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Harold E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Italy |
| Mother's Birthplace | Minnesota |
| Mother Tongue | Italian |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 12
King, Washington · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Italy |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 22
King-County, Washington · implied b. ~1918 — 3 household members
| Surname | Jackson |
| Given Name | Harold E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Truck Driver |
| Industry | Transfer |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H-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 Harold Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Jackson (~0.92 confidence) and father Henry Jackson (~0.92 confidence) and mother Cora Jackson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Jackson
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Henry Jackson
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Cora Jackson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Jackson
Son · 1940 · age 22 · b. ~1918 · 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
36 people indexed on this census page (nara:1940:m-t0627-04383-00140)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clarence T. Bucus | 38 | Head | Carpenter | Colorado |
| 42 | Harriett J. Bucus | 37 | Wife | — | Wisconsin |
| 43 | Betty Bucus | 15 | Daughter | — | Washington |
| 44 | Thomas Bucus | 13 | Son | — | Washington |
| 45 | George H. Borgen | 57 | Head | Hotel Manager | Norway |
| 46 | Minnie H. Borgen | 50 | Wife | Assistant Manager | England |
| 47 | Thera H. Tuttle | 44 | Lodger | Cashier | Iowa |
| 48 | Georgia Chicchetti | 45 | Head | Alterator | Washington |
| 49 | Louis S. Chicchetti | 26 | Son | Carpenter | California |
| 50 | Harry Jackson | 53 | Head | Chauffeur | Italy |
| 51 | Cora L. Jackson | 45 | Wife | — | Minnesota |
| 52 | Harold E. Jackson THIS PERSON | 22 | Son | Truck Driver | Washington |
| 53 | Bumpei Yamamoto | 59 | Head | Farmer | Japan |
| 54 | Kane Yamamoto | 47 | Wife | Farm Helper | Japan |
| 55 | Yukihiko Yamamoto | 20 | Son | Farm Helper | Washington |
| 56 | Yoshiko Yamamoto | 3 | Daughter | — | Washington |
| 57 | James J. Donofrio | 42 | Head | Projectionist | Washington |
| 58 | Clarice M. Donofrio | 38 | Wife | — | Minnesota |
| 59 | Phyllis Donofrio | 15 | Daughter | — | Washington |
| 60 | Darlene Donofrio | 8 | Daughter | — | Washington |
| 61 | Marilyn Donofrio | 3 | Daughter | — | Washington |
| 62 | Hewitt A. Thomas | 46 | Head | Claim Adjuster | Iowa |
| 63 | Mildred A. Thomas | 39 | Wife | Saleswoman | Illinois |
| 64 | Charles P. Thomas | 19 | Son | — | Washington |
| 65 | Harold W. Thomas | 16 | Son | — | California |
| 66 | Lawrence H. Lesb | 51 | Head | Chief Mechanic | Iowa |
| 67 | Elsie J. Lesb | 46 | Wife | — | South Dakota |
| 68 | J. Bernhard Melvin | 36 | Head | Meteorologist | Minnesota |
| 69 | Geraldine A. Melvin | 27 | Wife | — | California |
| 70 | Joan A. Melvin | 5 | Daughter | — | Washington |
| 71 | Joel Melvin | 3 | Son | — | Washington |
| 72 | Serge J. Aleinikoff | 38 | Head | Office Clerk | Russia |
| 73 | Nina A. Aleinikoff | 36 | Wife | — | China |
| 74 | Valentina Aleinikoff | 9 | Daughter | — | Washington |
| 75 | Paul Aleinikoff | 2 | Son | — | Washington |
| 76 | Emil M. Williams | 34 | Head | Inspector | Oregon |
Pedigree Summary
Harold
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)