JB
James Butler — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this James Butler across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents Hengie & George — first a son (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Butler |
| Given Name | James Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Longmont |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Operator |
| Industry | Filling Station |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 44 |
| Highest Grade | No H4 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Operator |
| Township / Ward | Longmont |
| Est. Birth Year | ~1913 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Hengie Butler | Head | — | 63 | ~1877 |
| John Castell | Other | — | 36 | ~1904 |
| James Butler | Son | — | 27 | ~1913 |
| Jennie Butler | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Boulder, Colorado
Son, age 7
Boulder, Colorado · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | Jas. Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Illinois |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Son, age 17
Boulder, Colorado · implied b. ~1913
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Butler |
| Given Name | James G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Son, age 27
Boulder-County, Colorado · implied b. ~1913 — 4 household members
| Surname | Butler |
| Given Name | James Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Longmont |
| 1935 Residence (County) | Boulder |
| Occupation | Operator |
| Industry | Filling Station |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 44 |
| Highest Grade | No H4 |
| 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 Butler across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Hengie Butler (~0.92 confidence) and father George Butler (~0.92 confidence) and mother Jennie Butler (~0.92 confidence) and mother Jessie Butler (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hengie Butler
b. ~1877
Source father
● Household
· direct · ~0.92
Father
George Butler
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Jennie Butler
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Jessie Butler
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Butler
Son · 1940 · age 27 · b. ~1913 · 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 — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00457-01106)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Marie Jury | 11 | Daughter | — | Colorado |
| 42 | Robert Jury | 2 | Son | — | Colorado |
| 44 | Emil Tossich | 45 | Head | Miner | Yugoslavia |
| 45 | Mary Tossich | 37 | Wife | — | Yugoslavia |
| 46 | Anne Tossich | 17 | Daughter | — | Montana |
| 47 | Vrone Tossich | 13 | Daughter | — | Michigan |
| 48 | John Tossich | 11 | Son | — | Wyoming |
| 49 | Albert Tossich | 4 | Son | — | Colorado |
| 50 | James F. Garner | 51 | Head | Cement Worker | Arkansas |
| 51 | Ora M. Garner | 47 | Wife | — | Missouri |
| 52 | James Lloyd Garner | 20 | Son | Laborer | Arkansas |
| 53 | Abner B. Gilmore | 51 | Head | Own Business | Iowa |
| 54 | Edda Gilmore | 49 | Wife | — | Iowa |
| 55 | Rex Gilmore | 25 | Son | Collector | Iowa |
| 56 | Jessie Reynolds | 81 | Head | — | Iowa |
| 57 | Pauline Reynolds | 46 | Daughter | Art Teacher | Iowa |
| 58 | Dwight S. Reynolds | 60 | Son | Laborer | Iowa |
| 60 | John Player | 53 | Head | — | Iowa |
| 61 | Katherine G. Player | 49 | Wife | — | Nebraska |
| 62 | John G. Player | 21 | Son | — | Illinois |
| 63 | Catherine Capri Player | 19 | Daughter | — | Illinois |
| 64 | Guy Dodd | 47 | Head | — | Colorado |
| 65 | Florence Dodd | 43 | Wife | — | Nebraska |
| 66 | James Dodd | 6 | Daughter | — | Colorado |
| 67 | Wiley Allen Swartz | 76 | Father | — | Illinois |
| 68 | Martha Swartz | 77 | Mother | — | Illinois |
| 69 | Hengie W. Butler | 63 | Head | — | Colorado |
| 70 | Jennie Butler | 56 | Wife | — | Illinois |
| 71 | James Alfred Butler THIS PERSON | 27 | Son | Operator | Colorado |
| 72 | John Castell | 36 | Lodger | Tipple Man | Wyoming |
| 73 | Angeline B. Addington | 63 | Head | Postmaster | Tennessee |
| 74 | Elizabeth Addington | 36 | Daughter | Collector | Tennessee |
| 76 | Theresa Westerberg | 57 | Head | Manager | Iowa |
| 77 | Grace Westerberg | 54 | Sister | Assistant Manager | Iowa |
| 78 | Hermanna Jantzen | 76 | Lodger | Practitioner | Germany |
| 79 | Ruth Biddle | 61 | Lodger | Teacher | Iowa |
| 80 | Wilma Hanson | 23 | Lodger | Bookkeeper | Colorado |
Pedigree Summary
James
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)