BJ
Blanche Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Costilla-County, Colorado
Our Model Tree links this Blanche Johnson across the 1930 and 1940 US Censuses in Costilla-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 10-person household.
Age 41
b. ~1899
Female
Spouse
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Costilla-County, Colorado |
| Surname | Johnson |
| Given Name | Blanche |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Costilla |
| Additional Details | |
| Highest Grade | H 8 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Prec 1 Fort Garland |
| Est. Birth Year | ~1899 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Blanche | Age | Birth yr |
|---|---|---|---|---|
| Blanche Johnson | Spouse | — | 41 | ~1899 |
| Gwen Johnson | Son | — | 13 | ~1927 |
| Lois Johnson | Daughter | — | 12 | ~1928 |
| Walter Johnson | Head | — | 43 | ~1897 |
| James Johnson | Son | — | 5 | ~1935 |
| William Johnson | Son | — | 10 | ~1930 |
| Howard Johnson | Son | — | 15 | ~1925 |
| Helen Johnson | Daughter | — | 17 | ~1923 |
| Betty Johnson | Daughter | — | 7 | ~1933 |
| Reford Johnson | Other | — | 20 | ~1920 |
Census Appearances
1930
Costilla, Colorado
Other, age 30
Costilla, Colorado · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Blanche |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 17 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Costilla-County, Colorado
Spouse, age 41
Costilla-County, Colorado · implied b. ~1899 — 10 household members
| Surname | Johnson |
| Given Name | Blanche |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Costilla |
| Highest Grade | H 8 |
| 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 Blanche Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Blanche Johnson
Spouse · 1940 · age 41 · b. ~1899 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Costilla-County, Colorado
Open full size
1940 US Federal Census — Costilla-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00459-00163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Martinez | 25 | Head | Laborer | Colorado |
| 2 | Valentine Martinez | 16 | Wife | — | Colorado |
| 3 | Edna Martinez | 1 | Daughter | — | Colorado |
| 4 | Ruben Serna | 28 | Head | Farmer | Colorado |
| 5 | Margaret Serna | 21 | Wife | — | Colorado |
| 6 | Bernice Serna | 2 | Daughter | — | Colorado |
| 7 | Tom Takeda | 51 | Head | Farmer | Japan |
| 8 | Roy Takeda | 18 | Son | — | Utah |
| 9 | Ray Takeda | 17 | Son | — | Utah |
| 10 | Helen Takeda | 15 | Daughter | — | Utah |
| 11 | Eddie Takeda | 13 | Son | — | Colorado |
| 12 | James Takeda | 11 | Son | — | Colorado |
| 13 | Clara May Takeda | 9 | Daughter | — | Colorado |
| 14 | Yuka Sumida | 57 | Head | Farmer | Japan |
| 15 | George Sumida | 18 | Son | — | Colorado |
| 16 | Lillie Sumida | 15 | Daughter | — | Colorado |
| 17 | Thomas Sumida | 14 | Son | — | Colorado |
| 18 | Joe Sumida | 15 | Son | — | Colorado |
| 19 | William Sumida | 13 | Son | — | Colorado |
| 20 | Dorothy Sumida | 11 | Daughter | — | Colorado |
| 21 | John Serna | 42 | Head | Laborer | Colorado |
| 22 | Cofuma Serna | 43 | Wife | — | Colorado |
| 23 | Priscilla Serna | 9 | Daughter | — | Colorado |
| 24 | Walter Johnson | 43 | Head | Farmer | Nebraska |
| 25 | Blanche Johnson THIS PERSON | 41 | Wife | — | Colorado |
| 26 | Helen Johnson | 17 | Daughter | — | Colorado |
| 27 | Howard Johnson | 15 | Son | — | Colorado |
| 28 | Gwen Johnson | 13 | Son | — | Colorado |
| 29 | Lois Johnson | 12 | Daughter | — | Colorado |
| 30 | William Johnson | 10 | Son | — | Colorado |
| 31 | Betty Johnson | 7 | Daughter | — | Colorado |
| 32 | James Johnson | 5 | Son | — | — |
| 33 | Reford Johnson | 20 | Hired hand | Laborer | Oklahoma |
| 34 | Willard Bean | 47 | Head | Farmer | Ohio |
| 35 | Minnie Shafer | 45 | Niece | — | Illinois |
| 36 | Carl Isay | 23 | Head | Laborer | Colorado |
| 37 | Dorothy Isay | 24 | Wife | — | Colorado |
| 38 | Clara Mae Isay | 5 | Daughter | — | — |
| 39 | La-Vana Isay | 3 | Daughter | — | — |
| 40 | Phillip Isay | 1 | Son | — | — |
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)