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Fred Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Fred Brown across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents Everett & Pearl — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Brown |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salina |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Gold mine |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1500 |
| Highest Grade | H-4 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Truck Driver |
| Township / Ward | Precinct 37 |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Fred | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Brown | Daughter | — | 5 | ~1935 |
| Fred Brown | Head | — | 25 | ~1915 |
| Lucille Brown | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Boulder, Colorado
Son, age 5
Boulder, Colorado · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Fredrick E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Son, age 15
Boulder, Colorado · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Fred E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Head, age 25
Boulder-County, Colorado · implied b. ~1915 — 3 household members
| Surname | Brown |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salina |
| 1935 Residence (County) | Boulder |
| Occupation | Truck Driver |
| Industry | Gold mine |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1500 |
| Highest Grade | H-4 |
| 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 Fred Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Everett Brown (~0.92 confidence) and mother Pearl Brown (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Everett Brown
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Pearl Brown
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Fred Brown
Head · 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 — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00483)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fred Brown THIS PERSON | 25 | Head | Truck Driver | Colorado |
| 42 | Lucille Brown | 25 | Wife | Hostess | Colorado |
| 43 | Evelyn Brown | 5 | Daughter | — | Colorado |
| 44 | Everett Brown | 49 | Head | Foreman | Colorado |
| 45 | Pearl Brown | 45 | Wife | — | Colorado |
| 46 | Elizabeth Yates | 64 | Mother-in-law | — | Washington |
| 47 | Milton Daniels | 28 | Head | Road Construction | Colorado |
| 48 | Muriel Daniels | 28 | Wife | — | Colorado |
| 49 | Delilah Daniels | 5 | Daughter | — | Colorado |
| 50 | Marcella Daniels | 4 | Daughter | — | Colorado |
| 51 | Milton Daniels | 1 | Son | — | Colorado |
| 52 | Roy Ransom | 45 | Head | Prospector | Kansas |
| 53 | Junior Ransom | 14 | Son | — | Colorado |
| 54 | Marie M. Tyrer | 58 | Head | — | Wisconsin |
| 55 | Homer C. Tyrer | 25 | Son | Common Labor | Colorado |
| 56 | Marvin Crawford | 21 | Head | Common Labor | Missouri |
| 57 | Evelyn Crawford | 18 | Wife | — | Colorado |
| 58 | Donna Jean Crawford | 1 | Daughter | — | Colorado |
| 59 | Grover Cavalier | 53 | Head | Miner | New Jersey |
| 60 | Charles Guhse | 60 | Head | Miner | Kansas |
| 61 | Frances Miller | 44 | Partner | — | Colorado |
| 62 | W. A. Moore | 43 | Head | Metal Miner | Colorado |
| 63 | Mary Moore | 31 | Wife | — | Missouri |
| 64 | Connie Lou Moore | 2 | Daughter | — | Colorado |
| 65 | Veneel Thomas | 32 | Partner | Metal Miner | Missouri |
| 66 | Lloyd Cooper | 52 | Partner | Metal Miner | Illinois |
| 67 | Merton Gunn | 48 | Head | Common Laborer | Colorado |
| 68 | Grace Gunn | 37 | Wife | — | Colorado |
| 69 | Donald Wright | 12 | Step-son | — | Colorado |
| 70 | John Gunn | 4 | Son | — | Colorado |
| 71 | Robert Gunn | 3 | Son | — | Colorado |
| 72 | Thomas Gunn | 1 | Son | — | Colorado |
| 73 | Ralph Green | 50 | Head | Carpenter | Illinois |
| 74 | Nellie Green | 48 | Wife | — | Illinois |
| 75 | George Gandy | 30 | Head | Gold Miner | Colorado |
| 76 | Steve Pastore | 61 | Head | Farmer | Italy |
| 77 | Caroline Pastore | 43 | Wife | — | Colorado |
| 78 | Clyde Pastore | 19 | Son | Truck Driver | Colorado |
| 79 | Betty Ann Pastore | 11 | Daughter | — | Colorado |
| 80 | Dale Pastore | 8 | Son | — | Colorado |
Pedigree Summary
Fred
Gen 1 · 2 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)