CS
Calvin Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Idaho
Our Model Tree links this Calvin Smith across the 1930 and 1940 US Censuses in Madison-County, Idaho (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Idaho |
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Rexburg |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Laborer |
| Industry | Common Labor |
| Class of Worker | PW |
| Income (1939) | 6 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Occupation | Laborer |
| Township / Ward | Rexburg |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Calvin | Age | Birth yr |
|---|---|---|---|---|
| Calvin Smith | Son | — | 16 | ~1924 |
| Ida Smith | Daughter | — | 1 | ~1939 |
| Larone Smith | Daughter | — | 5 | ~1935 |
| Arlene Smith | Daughter | — | 6 | ~1934 |
| Robert Smith | Son | — | 13 | ~1927 |
| Adella Smith | Spouse | — | 42 | ~1898 |
| Glen Smith | Son | — | 18 | ~1922 |
| Don Smith | Head | — | 45 | ~1895 |
| Lola Smith | Daughter | — | 14 | ~1926 |
| Don Smith | Son | — | 20 | ~1920 |
| Reva Smith | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Madison, Idaho
Son, age 6
Madison, Idaho · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Idaho |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Madison-County, Idaho
Son, age 16
Madison-County, Idaho · implied b. ~1924 — 11 household members
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Rexburg |
| 1935 Residence (County) | Madison |
| Occupation | Laborer |
| Industry | Common Labor |
| Class of Worker | PW |
| Income (1939) | 6 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Calvin Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Calvin Smith
Son · 1940 · age 16 · b. ~1924 · Idaho
★ You are viewing this record
Sibling
Don Smith
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Larone Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reva Smith
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Smith
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arlene Smith
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Smith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lola Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ida Smith
Sibling · 1940 · age 1
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 — Madison-County, Idaho
Open full size
1940 US Federal Census — Madison-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00750-00689)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Seth John Realtie | 45 | Son-in-law | Farmer | Idaho |
| 2 | Ethel M Realtie | 42 | Daughter | — | Utah |
| 3 | Glen L Realtie | 22 | Grandson | Laborer | Idaho |
| 4 | Bert M Realtie | 19 | Grandson | — | Idaho |
| 5 | Allen Realtie | 14 | Grandson | — | Idaho |
| 6 | Frank Robinson | 61 | Head | — | Utah |
| 7 | Bertha D Robinson | 57 | Wife | — | Utah |
| 8 | Leon F Marshall | 27 | Head | Clerk | Canada |
| 9 | Violet D Marshall | 22 | Wife | — | Idaho |
| 10 | Divan R Marshall | 1 | Daughter | — | Idaho |
| 11 | Kay B V Marshall | 0 | Son | — | Idaho |
| 12 | Wilford D Wickham | 28 | Head | Service Station | Idaho |
| 13 | Geneva L Wickham | 22 | Wife | — | Idaho |
| 14 | Burton H Ricks | 42 | Head | Plumber | Idaho |
| 15 | Mary L D Ricks | 37 | Wife | — | Idaho |
| 16 | Berton R Ricks | 17 | Son | — | Idaho |
| 17 | Leeann Ricks | 6 | Daughter | — | Idaho |
| 18 | Louisa H B Bush | 65 | Head | — | Utah |
| 19 | George A Bush | 61 | Brother | Laborer | Utah |
| 20 | Addie Bush | 59 | Sister | — | Utah |
| 21 | William H Wheelwright | 51 | Head | Contractor | Utah |
| 22 | Mary R B Wheelwright | 44 | Wife | — | Utah |
| 23 | Earl J Wheelwright | 12 | Son | — | Idaho |
| 24 | Adna M Wheelwright | 9 | Daughter | — | Idaho |
| 25 | Arvila Wheelwright | 3 | Daughter | — | Idaho |
| 26 | Don S Smith | 45 | Head | Carpenter | Colo |
| 27 | Adella D Smith | 42 | Wife | — | Idaho |
| 28 | Don L Smith | 20 | Son | — | Idaho |
| 29 | Glen L Smith | 18 | Son | Laborer | Idaho |
| 30 | Calvin Smith THIS PERSON | 16 | Son | Laborer | Idaho |
| 31 | Lola Smith | 14 | Daughter | — | Idaho |
| 32 | Robert Smith | 13 | Son | — | Idaho |
| 33 | Reva Smith | 9 | Daughter | — | Idaho |
| 34 | Arlene Smith | 6 | Daughter | — | Idaho |
| 35 | Larone Smith | 5 | Daughter | — | Idaho |
| 36 | Ida June Smith | 1 | Daughter | — | Idaho |
| 37 | Russell Smith | 21 | Head | Laborer | Idaho |
| 38 | Venus Smith | 23 | Wife | — | Idaho |
| 39 | Joan Smith | 2 | Daughter | — | Idaho |
| 40 | Jesse Smith | 46 | Head | County Treas. | Oregon |
Related Census Records
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)