JS
Jack Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Las-Animas-County, Colorado
Our Model Tree links this Jack Smith across the 1920, 1930 and 1940 US Censuses in Las-Animas-County, Colorado (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Las-Animas-County, Colorado |
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Trinidad city |
| 1935 Residence (County) | Las Animas |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building Const. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 480 |
| Highest Grade | C 1 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Carpenter |
| Township / Ward | Trinidad City |
| Est. Birth Year | ~1915 |
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 Jack | Age | Birth yr |
|---|---|---|---|---|
| John Smith | Head | — | 57 | ~1883 |
| Mary Smith | Other | — | 22 | ~1918 |
| Jack Smith | Son | — | 25 | ~1915 |
| Estella Smith | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Las Animas, …
Son, age 5
Las Animas, Colorado · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Las Animas, …
Son, age 15
Las Animas, Colorado · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Colorado |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Las-Animas-County, Colorado
Son, age 25
Las-Animas-County, Colorado · implied b. ~1915 — 4 household members
| Surname | Smith |
| Given Name | Jack |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Trinidad city |
| 1935 Residence (County) | Las Animas |
| Occupation | Carpenter |
| Industry | Building Const. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 480 |
| Highest Grade | C 1 |
| 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 Jack 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 father John Smith (~0.92 confidence) and mother Estella Smith (~0.92 confidence) and mother Estella Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Smith
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Smith
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Estella Smith
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Estella Smith
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jack Smith
Son · 1940 · age 25 · b. ~1915 · Colorado
★ 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 — Las-Animas-County, Colorado
Open full size
1940 US Federal Census — Las-Animas-County, Colorado
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00468-00598)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charlotte Cowleshow | 20 | daughter | — | Colorado |
| 3 | Kitty Himmelspach | 56 | head | Operator | Iowa |
| 4 | John Chambers | 86 | boarder | — | Missouri |
| 5 | Christina Dugan | 75 | boarder | — | Colorado |
| 6 | William Thomas | 65 | boarder | — | Kansas |
| 7 | Frank J. Beeson | 73 | boarder | — | Indiana |
| 8 | Raymond Thomas | 54 | boarder | — | Colorado |
| 9 | Frank Dazzo | 64 | head | — | Italy |
| 10 | Josephine Dazzo | 51 | wife | — | Italy |
| 11 | Nick Dazzo | 32 | son | Ass. Dist. Attorney | New Mexico |
| 12 | Nicholas Daily | 26 | head | Butcher | Canada E. |
| 13 | Elvira S. Daily | 23 | wife | — | Colorado |
| 14 | Barbara Joyce Daily | 1 | daughter | — | Colorado |
| 15 | Clarence Beard | 32 | head | Salesman | Kentucky |
| 16 | Edith Kay Beard | 24 | wife | — | Texas |
| 17 | Ronald E. Beard | 3 | son | — | Colorado |
| 18 | Patsy Jean Beard | 0 | daughter | — | Colorado |
| 19 | Leroy Williams | 63 | head | — | Iowa |
| 20 | Matilda S. Williams | 63 | wife | — | Iowa |
| 21 | Perry Williams | 32 | head | Sign Painter | Kansas |
| 22 | Fern S. Williams | 31 | wife | — | Illinois |
| 23 | Patrick L. Williams | 10 | son | — | Texas |
| 24 | Mary Lou Williams | 1 | daughter | — | Colorado |
| 25 | Theodore Hines | 32 | head | Auto Mechanic | Oklahoma |
| 26 | Hallie L. Hines | 29 | wife | — | Illinois |
| 27 | A. J. Hines | 10 | son | — | Texas |
| 28 | William Conners | 54 | head | Timekeeper | England |
| 29 | Mabel E. Conners | 45 | wife | — | England |
| 30 | Ben R. Davis | 37 | head | Concrete Finman | Colorado |
| 31 | Cora H. Davis | 36 | wife | — | Colorado |
| 32 | Betty L. Davis | 13 | daughter | — | Utah |
| 33 | Arthur R. Davis | 11 | son | — | Utah |
| 34 | John C. Smith | 57 | head | Engine Fireman | Penn. |
| 35 | Estella S. Smith | 46 | wife | — | Colorado |
| 36 | Jack Smith THIS PERSON | 25 | son | Carpenter | Colorado |
| 37 | Mary Jane Smith | 22 | daughter-in-law | — | Nebraska |
| 39 | Milo S. Kalabich | 55 | head | Pumper | Yugoslavia |
| 40 | Edith Kalabich | 46 | wife | Cook | Iowa |
Pedigree Summary
Jack
Gen 1 · 4 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)