KS
Kenneth Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kootenai-County, Idaho
Our Model Tree links this Kenneth Smith across the 1920, 1930 and 1940 US Censuses in Kootenai-County, Idaho (XGBoost, ~Confirmed), with identified parents O & P — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kootenai-County, Idaho |
| Surname | Smith |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Rimrock Precinct |
| 1935 Residence (County) | Kootenai |
| Additional Details | |
| Occupation | Father's Partner |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same home |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Father'S Partner |
| Township / Ward | Rimrock Precinct |
| Est. Birth Year | ~1919 |
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 Kenneth | Age | Birth yr |
|---|---|---|---|---|
| O Smith | Head | — | 58 | ~1882 |
| Kenneth Smith | Son | — | 21 | ~1919 |
| Warren Smith | Son | — | 3 | ~1937 |
| Lulu Smith | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Whitman, Washington
Son, age 1
Whitman, Washington · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Kootenai, Idaho
Son, age 11
Kootenai, Idaho · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Kenneth O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Kootenai-County, Idaho
Son, age 21
Kootenai-County, Idaho · implied b. ~1919 — 4 household members
| Surname | Smith |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Rimrock Precinct |
| 1935 Residence (County) | Kootenai |
| Occupation | Father's Partner |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same home |
| 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 Kenneth Smith across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father O Smith (~0.92 confidence) and father P Smith (~0.92 confidence) and father C Smith (~0.92 confidence) and mother Agnes Smith (~0.92 confidence) and mother Lulu Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
O Smith
b. ~1882
Source father
● Household
· direct · ~0.92
Father
P Smith
b. ~1882
Source father
● Household
· direct · ~0.92
Father
C Smith
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Agnes Smith
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Lulu Smith
b. ~1900
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Kenneth Smith
Son · 1940 · age 21 · b. ~1919 · Idaho
★ You are viewing this record
Sibling
Warren Smith
Sibling · 1940 · age 3
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 — Kootenai-County, Idaho
Open full size
1940 US Federal Census — Kootenai-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00748-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Iona Harris | 5 | Daughter | — | Idaho |
| 2 | Alva Chambers | 50 | Head | Postmaster | North Dakota |
| 3 | John C. Chambers | 21 | Son | Attendant | Montana |
| 4 | Kenneth Chambers | 17 | Son | Attendant | Montana |
| 5 | George Slough | 80 | Head | Farmer | Illinois |
| 6 | Lillian Slough | 82 | Wife | — | Illinois |
| 7 | Jesse P. Abbott | 64 | Head | Farmer | Iowa |
| 8 | Mary Abbott | 65 | Wife | — | Iowa |
| 9 | Elton Abbott | 28 | Son | Assistant | North Dakota |
| 10 | Edwin Robinson | 53 | Head | Farmer | Missouri |
| 11 | Dora Robinson | 44 | Wife | Farmer | Alabama |
| 12 | Adolph Hansen | 56 | Head | Kitchen Helper | Minnesota |
| 13 | Mabel Hansen | 37 | Wife | — | Minnesota |
| 14 | Darlene Hansen | 14 | Daughter | — | Montana |
| 15 | Kenneth Hansen | 12 | Son | — | Montana |
| 16 | Ray Hansen | 10 | Son | — | Montana |
| 17 | Betty Hansen | 8 | Daughter | — | Montana |
| 18 | Clyda Hansen | 6 | Daughter | — | Montana |
| 19 | Lula Hansen | 4 | Daughter | — | Montana |
| 20 | John Pope | 60 | Head | Laborer | Yugoslavia |
| 21 | Anna Pope | 59 | Wife | — | Yugoslavia |
| 22 | Mary Pope | 30 | Daughter | Housework | Washington |
| 23 | Frank Pope | 24 | Head | Laborer | Idaho |
| 24 | Evelyn Pope | 23 | Wife | — | Idaho |
| 25 | Marilyn Pope | 2 | Daughter | — | Idaho |
| 26 | Dene Pope | 1 | Son | — | Idaho |
| 27 | Fred Stephenson | 31 | Head | Laborer | Oklahoma |
| 28 | Charlotte Stephenson | 26 | Wife | — | Alabama |
| 29 | Burt Stephenson | 2 | Son | — | Idaho |
| 30 | Erving Stephenson | 0 | Son | — | Idaho |
| 31 | O. F. Smith | 58 | Head | Farmer | Iowa |
| 32 | Lulu Smith | 40 | Wife | — | Minnesota |
| 33 | Kenneth Smith THIS PERSON | 21 | Son | Father'S Partner | Washington |
| 34 | Warren Smith | 3 | Son | — | Washington |
| 35 | Walter E. Regan | 53 | Head | Skidder | Wisconsin |
| 36 | Byrd Regan | 48 | Wife | — | Missouri |
| 37 | Leona Regan | 23 | Daughter | Housework | Idaho |
| 38 | Edwin Regan | 16 | Son | Play'S Helper | Washington |
| 39 | Carl Cornelisen | 40 | Head | Logger | Minnesota |
| 40 | Lyla Cornelisen | 27 | Wife | — | Minnesota |
Pedigree Summary
Kenneth + 1 sibling
Gen 1 · 5 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)