JB
James Black — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Juan-County, Utah
Our Model Tree links this James Black across the 1920, 1930 and 1940 US Censuses in San-Juan-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 7-person household.
Age 56
b. ~1884
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Juan-County, Utah |
| Surname | Black |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Blanding City |
| 1935 Residence (County) | San Juan |
| Additional Details | |
| Class of Worker | U |
| Hours Worked | 7 |
| Highest Grade | S 5 |
| 1935 Residence | Same House |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Blanding City |
| Est. Birth Year | ~1884 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| George Black | Daughter | — | 14 | ~1926 |
| Jo Black | Daughter | — | 8 | ~1932 |
| Devenita Black | Daughter | — | 15 | ~1925 |
| James Black | Head | — | 56 | ~1884 |
| Jerold Black | Son | — | 14 | ~1926 |
| James Black | Son | — | 12 | ~1928 |
| Kora Black | Spouse | — | 53 | ~1887 |
Census Appearances
1920
San Juan, …
Head, age 36
San Juan, Utah · implied b. ~1884 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | James A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Occupation | Laborer |
| Industry | Working out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
San Juan, …
Head, age 46
San Juan, Utah · implied b. ~1884 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | James Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 21 |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | VV |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Veteran | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
San-Juan-County, Utah
Head, age 56
San-Juan-County, Utah · implied b. ~1884 — 7 household members
| Surname | Black |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Blanding City |
| 1935 Residence (County) | San Juan |
| Class of Worker | U |
| Hours Worked | 7 |
| Highest Grade | S 5 |
| 1935 Residence | Same House |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Black across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Black
Head · 1940 · age 56 · b. ~1884 · Utah
★ 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 — San-Juan-County, Utah
Open full size
1940 US Federal Census — San-Juan-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04217-00046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Morgan G. Nielson | 44 | Head | Farming | Old Mexico |
| 42 | Helen D. Nielson | 37 | Wife | — | Massachusetts |
| 43 | Elberta Nielson | 16 | Daughter | — | California |
| 44 | Grace Nielson | 14 | Daughter | House Work | New Mexico |
| 45 | Helen Nielson | 11 | Daughter | — | Massachusetts |
| 46 | Nancy Nielson | 5 | Daughter | — | Utah |
| 47 | John D. Nielson | 3 | Son | 0 | Utah |
| 48 | Natalie Nielson | 1 | Daughter | 0 | Utah |
| 49 | Llewlyn S. Porter | 58 | Lodger | — | Maine |
| 50 | John L. S. Rowley | 73 | Head | — | Utah |
| 51 | Lilla Rowley | 39 | Daughter | — | Old Mexico |
| 52 | Mable Rowley | 6 | Daughter | — | Utah |
| 53 | Vernon C. Rowley | 32 | Head | Manager | Old Mexico |
| 54 | Charity L. Rowley | 40 | Wife | — | Nevada |
| 55 | Janice Rowley | 9 | Daughter | — | Utah |
| 56 | Vernon Conrad Jr. Rowley | 8 | Son | — | Nevada |
| 57 | Dudley John Rowley | 5 | Son | — | Utah |
| 58 | Marilyn Rowley | 3 | Daughter | 0 | Utah |
| 59 | James A. Black THIS PERSON | 56 | Head | — | Utah |
| 60 | Kora Black | 53 | Wife | — | Arizona |
| 61 | Devenita Black | 15 | Daughter | — | Arizona |
| 62 | George Lee Black | 14 | Daughter | — | California |
| 63 | Jerold Black | 14 | Son | — | Utah |
| 64 | Jo Dean Black | 8 | Daughter | — | Utah |
| 65 | James W. Black | 12 | Son | — | Utah |
| 66 | Alma J. Redd | 27 | Head | Manager | Utah |
| 67 | Vivian W. Redd | 24 | Wife | — | Utah |
| 68 | Patricia Ann Redd | 1 | Daughter | 0 | Colorado |
| 69 | James L. Ravens | 39 | Head | Master Mechanic | Utah |
| 70 | Alice Ravens | 34 | Wife | — | Utah |
| 71 | James Ray Ravens | 9 | Son | — | Utah |
| 72 | Blaine Lloyd Ravens | 3 | Son | 0 | Utah |
| 73 | William Ervin Palmer | 34 | Head | Manager Of | Old Mexico |
| 74 | Klea W. Palmer | 31 | Wife | — | New Mexico |
| 75 | Radine Palmer | 4 | Daughter | — | Utah |
| 76 | William Ellis Palmer | 6 | Son | — | Utah |
| 77 | Nedra Palmer | 3 | Daughter | 0 | Utah |
| 78 | Philip Lawrence Palmer | 1 | Son | 0 | Utah |
| 79 | Jennie H. Palmer | 46 | Head | Cook | Old Mexico |
| 80 | Brown Arvil G. Palmer | 23 | Son in Law | Cook Farming Work | Utah |
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)