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Jack Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kittitas-County, Washington
Our Model Tree links this Jack Smith across the 1920, 1930 and 1940 US Censuses in Kittitas-County, Washington (XGBoost, ~Confirmed), with identified parents Charles & Martha — first a head (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kittitas-County, Washington |
| Surname | Smith |
| Given Name | Jack A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Roslyn City |
| 1935 Residence (County) | Kittitas |
| Additional Details | |
| Occupation | Foreman |
| Industry | Coal Mines |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 2060 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Foreman |
| Township / Ward | Roslyn City |
| Est. Birth Year | ~1911 |
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 Jack | Age | Birth yr |
|---|---|---|---|---|
| Jack Smith | Head | — | 29 | ~1911 |
| Jack Smith | Son | — | 7 | ~1933 |
| Marie Smith | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Kittitas, Washington
Son, age 8
Kittitas, Washington · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Kittitas, Washington
Son, age 18
Kittitas, Washington · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | Illinois |
| Occupation | Digger |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Kittitas-County, Washington
Head, age 29
Kittitas-County, Washington · implied b. ~1911 — 3 household members
| Surname | Smith |
| Given Name | Jack A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Roslyn City |
| 1935 Residence (County) | Kittitas |
| Occupation | Foreman |
| Industry | Coal Mines |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 2060 |
| 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 Jack Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Smith (~0.92 confidence) and mother Martha Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Smith
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Martha Smith
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jack Smith
Head · 1940 · age 29 · b. ~1911 · 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 — Kittitas-County, Washington
Open full size
1940 US Federal Census — Kittitas-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04349-00503)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elenore Owens | 24 | Daughter | Housework | Washington |
| 42 | Mike Revello | 65 | Head | — | Italy |
| 43 | Angeline Revello | 57 | Wife | — | Italy |
| 44 | Harry Boardman | 54 | Head | Fireboss | England |
| 45 | Elizabeth Boardman | 58 | Wife | — | England |
| 46 | Robert Frame | 69 | Head | — | Illinois |
| 47 | Sarah J. Frame | 57 | Wife | — | Illinois |
| 48 | Andrew Kuzmak | 54 | Head | Miner | Czechoslovakia |
| 49 | Susan Kuzmak | 46 | Wife | — | Czechoslovakia |
| 50 | George Kuzmak | 19 | Son | Machine Operator | Washington |
| 51 | Angela Kuzmak | 17 | Daughter | — | Washington |
| 52 | Archie H. Tunnell | 32 | Head | Conveyor Man | Washington |
| 53 | Rose Tunnell | 34 | Wife | — | Wyoming |
| 54 | Joseph Perkins | 39 | Head | Machine Loader | Washington |
| 55 | Jeannette Perkins | 29 | Wife | — | Montana |
| 56 | Robert Perkins | 4 | Son | — | Washington |
| 57 | Valarie J. Perkins | 2 | Daughter | — | Washington |
| 58 | Patrick Glenn | 32 | Head | Truck Driver | Washington |
| 59 | Richard Hardman | 53 | Head | Machine Loader | England |
| 60 | Edwin Hardman | 18 | Son | — | Washington |
| 61 | Helen Prescott | 75 | Head | — | England |
| 62 | Matt Kuchin | 64 | Head | Timberman | Jugo Slavia |
| 63 | Mary Kuchin | 64 | Wife | — | Jugo Slavia |
| 64 | Wilfred Larson | 36 | Head | Fire Boss | Washington |
| 65 | Emma Larson | 34 | Wife | — | Washington |
| 66 | Wilfred C. Jr. Larson | 14 | Son | — | Washington |
| 67 | Virginia Larson | 9 | Daughter | — | Washington |
| 68 | Ferdinand Larson | 50 | Lodger | Miner | Washington |
| 69 | Harold Saxby | 37 | Head | Buckweigher | Washington |
| 70 | Ethel Saxby | 34 | Wife | — | Montana |
| 71 | Elaine Saxby | 6 | Daughter | — | Washington |
| 72 | James P. Mooney | 60 | Head | M.D. | Virginia |
| 73 | Martha Mooney | 55 | Wife | — | Wisconsin |
| 74 | Jane C. Mooney | 20 | Daughter | — | Washington |
| 75 | James P. Jr. Mooney | 19 | Son | — | Washington |
| 76 | Ella M. Holland | 74 | Head | — | West Virginia |
| 77 | Selma Holland | 44 | Daughter | Teacher | Washington |
| 78 | Jack A. Smith THIS PERSON | 29 | Head | Foreman | Washington |
| 79 | Marie Smith | 28 | Wife | — | Washington |
| 80 | Jack W. Smith | 7 | Son | — | Washington |
Pedigree Summary
Jack
Gen 1 · 2 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)