HS
Harold Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Harold Smith across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents John & Maggie — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Stone mason |
| Industry | WPA Construction |
| Class of Worker | GW |
| Hours Worked | 78 |
| Income (1939) | 206 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Stonemason |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Marian Smith | Daughter | — | 3 | ~1937 |
| Harold Smith | Head | — | 32 | ~1908 |
| James Smith | Son | — | 5 | ~1935 |
| Telma Smith | Spouse | — | 26 | ~1914 |
Census Appearances
1920
King, Washington
Son, age 12
King, Washington · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Harold A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Missouri |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 21
King, Washington · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Missouri |
| Mother's Birthplace | New York |
| Occupation | Fireman |
| Industry | U.S. Mail |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Head, age 32
King-County, Washington · implied b. ~1908 — 4 household members
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Stone mason |
| Industry | WPA Construction |
| Class of Worker | GW |
| Hours Worked | 78 |
| Income (1939) | 206 |
| Highest Grade | No 8 |
| 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 Harold Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Smith (~0.92 confidence) and mother Maggie Smith (~0.92 confidence) and mother Maggie Smith (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Smith
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Maggie Smith
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Maggie Smith
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Smith
Head · 1940 · age 32 · b. ~1908 · 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-t0627-04375-00634)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helene Enid | 5 | Daughter | — | Washington |
| 2 | Flora P. Ryder | 57 | Head | — | Illinois |
| 3 | Ellen Lawson | 64 | Sister | — | Illinois |
| 4 | James Lawson | 22 | Nephew | Attendant | Washington |
| 5 | Alice B. Hower | 53 | Lodger | Painter | Indiana |
| 6 | Marvin Upin | 53 | Head | Salesman | Montana |
| 7 | Olive P. Upin | 56 | Wife | — | Michigan |
| 8 | Genevieve Upin | 19 | Daughter | Elevator Operator | Montana |
| 9 | Annabel Upin | 17 | Daughter | — | Montana |
| 10 | Helen Upin | 14 | Daughter | — | Montana |
| 11 | Kenneth Campbell | 43 | Head | Teacher | China |
| 12 | Birdie Campbell | 40 | Wife | — | Norway |
| 13 | Ruth Campbell | 15 | Daughter | — | Washington |
| 14 | Douglas Campbell | 13 | Son | — | Washington |
| 15 | Richard Campbell | 11 | Son | — | Washington |
| 16 | Mildred Campbell | 10 | Daughter | — | Washington |
| 17 | Oliver Ellefson | 60 | Head | Salesman | Norway |
| 18 | Marie O. Ellefson | 47 | Wife | — | Iowa |
| 19 | John Ellefson | 12 | Son | — | Washington |
| 20 | Byron Ellefson | 7 | Son | — | Washington |
| 21 | Olaf Hoffman | 36 | Head | Secretary | Pennsylvania |
| 22 | Zora Chance | 33 | Head | Typist | Illinois |
| 23 | Shirley Chance | 14 | Niece | — | Montana |
| 24 | Marie Chance | 12 | Niece | — | Montana |
| 25 | Darlene Chance | 8 | Niece | — | Montana |
| 26 | Julius Alstad | 56 | Head | Carpenter Helper | Norway |
| 27 | Clara Alstad | 51 | Wife | — | Norway |
| 28 | Hazel Alstad | 13 | Daughter | — | Washington |
| 29 | Ruth S. Christensen | 38 | Head | Marker | Washington |
| 30 | June Christensen | 14 | Daughter | — | Washington |
| 31 | Robert Christensen | 12 | Son | — | Washington |
| 32 | Harold Smith THIS PERSON | 32 | Head | Stone Mason | Washington |
| 33 | Telma Smith | 26 | Wife | — | Washington |
| 34 | James Smith | 5 | Son | — | Washington |
| 35 | Marian Smith | 3 | Daughter | — | Washington |
| 36 | Homer Jelliett | 79 | Head | Trader | Washington |
| 37 | Juline Jelliett | 75 | Wife | — | Washington |
| 38 | Julie Jelliett | 55 | Daughter | — | Washington |
| 39 | Java Jelliett | 45 | Daughter | — | Washington |
| 40 | Russell B. Barron | 28 | Head | Junior Executive | Kansas |
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)