OJ
Oscar Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Oscar Jones across the 1910, 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 5-person household.
Age 67
b. ~1873
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Jones |
| Given Name | Oscar N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Stationary Engineer |
| Industry | Power plant |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 230 |
| Highest Grade | G 6 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stationary Engineer |
| Township / Ward | Denver |
| Est. Birth Year | ~1873 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Mable Jones | Spouse | — | 63 | ~1877 |
| Georgie Rollo | Other | — | 92 | ~1848 |
| Gloria Rollo | Daughter | — | 11 | ~1929 |
| Bertha Jones | Daughter | — | 36 | ~1904 |
| Oscar Jones | Head | — | 67 | ~1873 |
Census Appearances
1910
Denver, Colorado
Head, age 37
Denver, Colorado · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Oscar M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 8 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Miner |
| Industry | Gold Mine |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Denver, Colorado
Head, age 47
Denver, Colorado · implied b. ~1873 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Oscar W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Engineer |
| Industry | Scale Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Denver, Colorado
Head, age 57
Denver, Colorado · implied b. ~1873 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Oscar N |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 28 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Stationary Engineer |
| Industry | Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Denver-County, Colorado
Head, age 67
Denver-County, Colorado · implied b. ~1873 — 5 household members
| Surname | Jones |
| Given Name | Oscar N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Occupation | Stationary Engineer |
| Industry | Power plant |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 230 |
| Highest Grade | G 6 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Oscar Jones across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Oscar Jones
Head · 1940 · age 67 · b. ~1873 · 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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00484-00731)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William R. Harris | 11 | Son | — | Colorado |
| 42 | Jacqueline Harris | 7 | Daughter | — | Colorado |
| 43 | Paul L. Clippinger | 39 | Head | R.R. Clerk | Kansas |
| 44 | Emma R. Clippinger | 38 | Wife | — | Colorado |
| 45 | Leona M. Clippinger | 16 | Daughter | — | Colorado |
| 46 | Donald P. Clippinger | 14 | Son | — | Colorado |
| 47 | May F. Hawke | 71 | Head | — | Kansas |
| 48 | Mary M. Mason | 78 | Head | — | New York |
| 49 | Merle C. Lynch | 41 | Head | Mechanical Engineer | Texas |
| 50 | Freda C. Lynch | 42 | Wife | — | Colorado |
| 51 | Juanita W. Lynch | 20 | Daughter | Stenographer | Colorado |
| 52 | Merle C. Junior Lynch | 16 | Son | — | Colorado |
| 53 | Lorraine L. Lynch | 13 | Daughter | — | Colorado |
| 54 | Oscar N. Jones THIS PERSON | 67 | Head | Stationary Engineer | Illinois |
| 55 | Mable R. Jones | 63 | Wife | Teacher | Vermont |
| 56 | Bertha M. Jones | 36 | Daughter | Teacher | Colorado |
| 57 | Georgie C. Rollo | 92 | Mother-in-law | — | Vermont |
| 58 | Gloria M. Rollo | 11 | Daughter | — | Colorado |
| 59 | George J. Heckendorn | 41 | Head | Gas Engineer | Wisconsin |
| 60 | Mildred A. Heckendorn | 40 | Wife | — | Missouri |
| 61 | John W. Heckendorn | 13 | Son | — | Colorado |
| 62 | James P. Heckendorn | 14 | Son | — | Colorado |
| 63 | Marion A. Heckendorn | 8 | Daughter | — | Colorado |
| 64 | Joseph D. Heckendorn | 6 | Son | — | Colorado |
| 65 | William O. Angell | 64 | Head | Mail Carrier | Missouri |
| 66 | Rachel M. Angell | 62 | Wife | — | Missouri |
| 67 | H. M. Huckeby | 42 | Head | — | — |
| 68 | Harland J. Romberg | 30 | Head | Mail Clerk | Nebraska |
| 69 | Mary J. Romberg | 28 | Wife | Mail Clerk | Missouri |
| 70 | Thomas A. Romberg | 7 | Son | — | Colorado |
| 71 | Theodore E. Romberg | 7 | Son | — | Colorado |
| 72 | Harland H. Romberg | 5 | Son | — | Colorado |
| 73 | Guy O. Grimes | 33 | Head | Store Keeper | Kansas |
| 74 | Charlotte M. Grimes | 30 | Wife | — | Wisconsin |
| 75 | Gerald J. Grimes | 4 | Son | — | Colorado |
| 76 | John H. Walker | 56 | Head | Car Repairer | Nebraska |
| 77 | Marie M. Walker | 55 | Wife | — | Germany |
| 78 | Harvey J. Walker | 31 | Son | Taxi Driver | Colorado |
| 79 | Elaine M. Walker | 5 | Granddaughter | — | Michigan |
| 80 | Leona M. Walker | 7 | Granddaughter | — | Michigan |
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)