JT
James Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Weld-County, Colorado
Our Model Tree links this James Tracy across the 1930 and 1940 US Censuses in Weld-County, Colorado (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Weld-County, Colorado |
| Surname | Tracy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Weld |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Precinct 18 Gill |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Tracy | Son | — | 16 | ~1924 |
| Vera Tracy | Daughter | — | 12 | ~1928 |
| Evelyn Tracy | Daughter | — | 10 | ~1930 |
| Richard Tracy | Son | — | 14 | ~1926 |
| Opha Tracy | Daughter | — | 8 | ~1932 |
| Ray Tracy | Son | — | 6 | ~1934 |
| Timothy Tracy | Son | — | 1 | ~1939 |
| Daniel Tracy | Son | — | 2 | ~1938 |
| Opha Tracy | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Weld, Colorado
Son, age 6
Weld, Colorado · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracy |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Indiana |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Weld-County, Colorado
Son, age 16
Weld-County, Colorado · implied b. ~1924 — 9 household members
| Surname | Tracy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Weld |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 1935 Residence | Colorado |
| 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 Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Tracy
Son · 1940 · age 16 · b. ~1924 · Colorado
★ You are viewing this record
Sibling
Vera Tracy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Tracy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Tracy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Timothy Tracy
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Tracy
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Opha Tracy
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Tracy
Sibling · 1940 · age 6
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 — Weld-County, Colorado
Open full size
1940 US Federal Census — Weld-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00481-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Opha Tracy | 35 | Wife | — | Indiana |
| 42 | James Tracy THIS PERSON | 16 | Son | — | Colorado |
| 43 | Richard Tracy | 14 | Son | — | Colorado |
| 44 | Vera Tracy | 12 | Daughter | — | Colorado |
| 45 | Evelyn Tracy | 10 | Daughter | — | Colorado |
| 46 | Opha Jr Tracy | 8 | Daughter | — | Colorado |
| 47 | Ray Tracy | 6 | Son | — | Colorado |
| 48 | Daniel Tracy | 2 | Son | — | Colorado |
| 49 | Timothy Tracy | 1 | Son | — | Colorado |
| 50 | Carl Peterson | 72 | Head | Operator | Sweden |
| 51 | Harold Peterson | 34 | Son | Laborer | Colorado |
| 52 | Edna Peterson | 24 | Daughter | — | Colorado |
| 53 | Raymond Peterson | 20 | Son | — | Colorado |
| 54 | David Johnson | 64 | Head | Operator | Sweden |
| 55 | Mina Johnson | 42 | Wife | — | Indiana |
| 56 | Mil Johnson | 16 | Son | — | Colorado |
| 57 | Robert Rangel | 26 | Head | Operator | Mexico |
| 58 | Mary Rangel | 20 | Wife | — | Colorado |
| 59 | Robert Jr Rangel | 2 | Son | — | Colorado |
| 60 | August Bramer | 59 | Head | Operator | Germany |
| 61 | Myrtle Bramer | 44 | Wife | — | Colorado |
| 62 | Harold Bramer | 21 | Son | — | Colorado |
| 63 | Frances Bramer | 19 | Daughter | Stenographer | Colorado |
| 64 | William Bramer | 16 | Son | — | Colorado |
| 65 | J Fred Steck | 63 | Head | Operator | Illinois |
| 66 | Dora Steck | 57 | Wife | — | Iowa |
| 67 | Phyllis Steck | 16 | Daughter | — | Wyoming |
| 68 | Clarence Boyd | 64 | Head | Operator | Illinois |
| 69 | Clara Boyd | 53 | Wife | — | Colorado |
| 70 | Rudy Strausheim | 40 | Head | Operator | Nebraska |
| 71 | Kate Strausheim | 37 | Wife | — | Russia |
| 72 | Gloria Strausheim | 14 | Daughter | — | Colorado |
| 73 | Oscar Peterson | 32 | Head | Operator | Colorado |
| 74 | Billie Mae Peterson | 33 | Wife | — | Ohio |
| 75 | Gotfred Hoffner | 52 | Head | Operator | Russia |
| 76 | Katherine Hoffner | 52 | Wife | — | Russia |
| 77 | Leah Hoffner | 15 | Daughter | — | Colorado |
| 78 | Jacob Hoffner | 16 | Son | — | Colorado |
| 79 | Mollie Hoffner | 27 | Daughter | Hair Dresser | Oklahoma |
| 80 | Jacob Herdt | 45 | Head | Operator | Russia |
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)