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Joseph Ross — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Joseph Ross across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents James & Mary — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Ross |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Louisville |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | PW |
| Hours Worked | 13 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Miner |
| Township / Ward | Louisville |
| Est. Birth Year | ~1895 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Ross | Son | — | 15 | ~1925 |
| Robert Ross | Son | — | 6 | ~1934 |
| Joseph Ross | Head | — | 45 | ~1895 |
| Rose Ross | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Boulder, Colorado
Son, age 24
Boulder, Colorado · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Head, age 34
Boulder, Colorado · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 25 |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 900 |
| Radio Set | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Head, age 45
Boulder-County, Colorado · implied b. ~1895 — 4 household members
| Surname | Ross |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Louisville |
| 1935 Residence (County) | Boulder |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | PW |
| Hours Worked | 13 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Joseph Ross across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Ross (~0.92 confidence) and mother Mary Ross (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Ross
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Mary Ross
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Ross
Head · 1940 · age 45 · b. ~1895 · 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-t0627-00457-00292)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lydia Morgan | 42 | Sister | Teacher | Colorado |
| 42 | Mary E Morgan | 80 | Mother | — | W. Virginia |
| 43 | Boyd Korbis | 39 | Head | Miner | Missouri |
| 44 | Callie Korbis | 35 | Wife | — | Missouri |
| 45 | Garella Korbis | 12 | Daughter | — | Missouri |
| 46 | Derl Korbis | 9 | Son | — | Colorado |
| 47 | John G. Porta | 60 | Head | Miner | Italy |
| 48 | Henry Robinson | 51 | Head | Miner | Missouri |
| 49 | Anna Robinson | 45 | Wife | — | Colorado |
| 50 | Henrietta Robinson | 17 | Daughter | — | Colorado |
| 51 | Arthur Robinson | 15 | Son | — | Colorado |
| 52 | Louis Galingue | 32 | Head | Miner | Kansas |
| 53 | Eva Galingue | 27 | Wife | — | Kansas |
| 54 | Angeline Galingue | 7 | Daughter | — | Illinois |
| 55 | Robert Louis Galingue | 1 | Son | — | Colorado |
| 56 | Toney La Salle | 47 | Head | Merchant | Colorado |
| 57 | Catherine La Salle | 45 | Wife | — | Illinois |
| 58 | Paul Courtney | 38 | Head | Electrician | So. Carolina |
| 59 | Mabel Courtney | 35 | Wife | Seamstress | Washington |
| 60 | Robert Courtney | 13 | Son | — | Wyoming |
| 61 | Jacquline Courtney | 9 | Daughter | — | Wyoming |
| 62 | Paula Courtney | 6 | Daughter | — | Wyoming |
| 63 | John Pennington | 59 | Head | Miner | Texas |
| 64 | Pearl Pennington | 45 | Wife | — | Arkansas |
| 65 | Edith Pennington | 27 | Daughter | Seamstress | Oklahoma |
| 66 | Harry Lee Pennington | 12 | Son | — | Colorado |
| 67 | William Perr | 31 | Head | Electrician | Colorado |
| 68 | Grace Perr | 26 | Wife | — | Minnesota |
| 69 | Patty Lee Perr | 6 | Daughter | — | Colorado |
| 70 | Betty Lou Perr | 5 | Daughter | — | Colorado |
| 71 | Frank Sergent | 54 | Head | Foreman | France |
| 72 | Myrtle Sergent | 53 | Wife | — | Iowa |
| 73 | Joseph Ross THIS PERSON | 45 | Head | Miner | Colorado |
| 74 | Rose Ross | 36 | Wife | — | Colorado |
| 75 | Joseph Jr. Ross | 15 | Son | — | Colorado |
| 76 | Robert Michael Ross | 6 | Son | — | Colorado |
| 77 | Arthur Hanian | 48 | Head | Miner | Turkey |
| 78 | Anna Hanian | 41 | Wife | — | Colorado |
| 79 | Arthur Jr. Hanian | 16 | Son | — | Colorado |
| 80 | Arlene Hanian | 9 | Daughter | — | Colorado |
Pedigree Summary
Joseph
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)