JL
James Larkin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Valley-County, Idaho
Our Model Tree links this James Larkin across the 1930 and 1940 US Censuses in Valley-County, Idaho (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Valley-County, Idaho |
| Surname | Larkin |
| Given Name | James C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Roseberry Precinct |
| 1935 Residence (County) | Valley |
| Additional Details | |
| Occupation | Ratchet Setter |
| Industry | Saw Mill Lumber |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Ratchet Setter |
| Township / Ward | Roseberry Precinct |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Larkin | Head | — | 49 | ~1891 |
| John Larkin | Son | — | 20 | ~1920 |
| Cecilia Larkin | Spouse | — | 49 | ~1891 |
| Joseph Larkin | Son | — | 11 | ~1929 |
| James Larkin | Son | — | 19 | ~1921 |
| Ellen Larkin | Daughter | — | 16 | ~1924 |
| Albert Larkin | Son | — | 6 | ~1934 |
Census Appearances
1930
Valley, Idaho
Son, age 8
Valley, Idaho · implied b. ~1922 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larkin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Poland |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Valley-County, Idaho
Son, age 19
Valley-County, Idaho · implied b. ~1921 — 7 household members
| Surname | Larkin |
| Given Name | James C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Roseberry Precinct |
| 1935 Residence (County) | Valley |
| Occupation | Ratchet Setter |
| Industry | Saw Mill Lumber |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 James Larkin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Larkin
Son · 1940 · age 19 · b. ~1921 · Idaho
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Sibling
John Larkin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Larkin
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Larkin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Larkin
Sibling · 1940 · age 11
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 — Valley-County, Idaho
Open full size
1940 US Federal Census — Valley-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00755-00112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles M. G. Bumgarner | 52 | Head | Farmer | North Carolina |
| 2 | Ernest G. Fisher | 42 | Head | Wood Cutter | Colorado |
| 3 | Ruby A. Fisher | 40 | Wife | — | Colorado |
| 4 | Raymond W. Fisher | 18 | Son | Wood Cutter | Wyoming |
| 5 | Douglas G. Fisher | 12 | Son | Wood Cutter | Colorado |
| 6 | William A. Evans | 42 | Head | Log Cutter | Idaho |
| 7 | Ivah G. Evans | 45 | Wife | — | Iowa |
| 8 | Charles S. Clark | 78 | In-law | — | Ohio |
| 9 | Arthur C. Leeper | 45 | Head | Farmer | Iowa |
| 10 | Mildred E. Leeper | 32 | Wife | — | Iowa |
| 11 | Ivan J. Leeper | 13 | Son | — | Iowa |
| 12 | Edna M. Hill | 32 | Head | — | Oklahoma |
| 13 | Nora A. Hill | 13 | Daughter | — | Oklahoma |
| 14 | Hallie P. Hill | 11 | Daughter | — | Missouri |
| 15 | Martha M. Hill | 9 | Daughter | — | Oklahoma |
| 16 | Martin W. Hill | 7 | Son | — | Oklahoma |
| 17 | Betty V. Hill | 5 | Daughter | — | Oklahoma |
| 18 | Willa A. Hill | 3 | Daughter | — | Idaho |
| 19 | Finis C. Sherrill | 60 | Head | Farmer | Montana |
| 20 | Edna M. Sherrill | 45 | Wife | — | Missouri |
| 21 | Bennett Sherrill | 27 | Son | Farm Laborer | Idaho |
| 22 | Pearl Sherrill | 17 | Daughter | Student | Idaho |
| 23 | Clinton Sherrill | 16 | Son | Student | Idaho |
| 24 | James B. Larkin | 49 | Head | Farmer | Kentucky |
| 25 | Cecilia Larkin | 49 | Wife | — | Poland |
| 26 | John F. Larkin | 20 | Son | Offbearer | Colorado |
| 27 | James C. Larkin THIS PERSON | 19 | Son | Ratchet Setter | Colorado |
| 28 | Ellen M. Larkin | 16 | Daughter | Student | Colorado |
| 29 | Joseph L. Larkin | 11 | Son | — | Colorado |
| 30 | Albert R. Larkin | 6 | Son | — | Idaho |
| 31 | Fred D. Tucker | 47 | Head | Farmer | Texas |
| 32 | Esther Tucker | 28 | Wife | — | Idaho |
| 33 | George Strong | 68 | Hired Hand | Farmer | Iowa |
| 34 | William A. Hayes | 43 | Head | Farmer | Colorado |
| 35 | Willie B. Hayes | 42 | Wife | — | Mississippi |
| 36 | Bartley Jackie L. Hayes | 10 | Daughter | — | Mississippi |
| 37 | Earl C. Casey | 42 | Head | Janitor | South Dakota |
| 38 | Jenny P. Casey | 38 | Wife | — | Finland |
| 39 | Clarence V. Casey | 18 | Son | Farm Laborer | Idaho |
| 40 | Florence E. Casey | 16 | Daughter | Student | Idaho |
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)