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Maria Martinez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Costilla-County, Colorado
Our Model Tree links this Maria Martinez across the 1930 and 1940 US Censuses in Costilla-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 12-person household.
Age 10
b. ~1930
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Costilla-County, Colorado |
| Surname | Martinez |
| Given Name | Maria |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Costilla |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Colo |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | San Francisco Pct 4 San Francisco |
| Est. Birth Year | ~1930 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Martinez | Daughter | — | 7 | ~1933 |
| Maria Martinez | Daughter | — | 10 | ~1930 |
| Teresita Martinez | Daughter | — | 6 | ~1934 |
| Edwivigen Martinez | Daughter | — | 16 | ~1924 |
| Angellita Martinez | Spouse | — | 39 | ~1901 |
| Susana Martinez | Daughter | — | 19 | ~1921 |
| Ricardo Martinez | Son | — | 21 | ~1919 |
| Max Martinez | Son | — | 8 | ~1932 |
| Abel Martinez | Son | — | 4 | ~1936 |
| Solomon Martinez | Son | — | 14 | ~1926 |
| Ignacia Martinez | Daughter | — | 15 | ~1925 |
| Luis Martinez | Head | — | 50 | ~1890 |
Census Appearances
1930
Costilla, Colorado
Daughter, age
Costilla, Colorado · implied b. ~1930 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Maria S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Costilla-County, Colorado
Daughter, age 10
Costilla-County, Colorado · implied b. ~1930 — 12 household members
| Surname | Martinez |
| Given Name | Maria |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Costilla |
| Highest Grade | Hs 3 |
| 1935 Residence | Colo |
| 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 Maria Martinez across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Maria Martinez
Daughter · 1940 · age 10 · b. ~1930 · Colorado
★ You are viewing this record
Sibling
Susana Martinez
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Abel Martinez
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ignacia Martinez
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresita Martinez
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Martinez
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Martinez
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ricardo Martinez
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Solomon Martinez
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwivigen Martinez
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00459-00110)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alfredo Vigil | 34 | Son | Farm Laborer | Colorado |
| 2 | Charley Vigil | 20 | Son | Laborer | Colorado |
| 3 | Edward Vigil | 31 | Head | Farmer | Colorado |
| 4 | Lefradita Vigil | 22 | Wife | — | Colorado |
| 5 | Felipe Vigil | 5 | Son | — | Colorado |
| 6 | J. Vicente Sanchez | 77 | Head | — | New Mexico |
| 7 | Walter H. Johnson | 23 | Head | Elementary Teacher | Colorado |
| 8 | Luis A. Martinez | 50 | Head | Laborer | Colorado |
| 9 | Angellita Martinez | 39 | Wife | — | Colorado |
| 10 | Ricardo Martinez | 21 | Son | Truck Driver | Colorado |
| 11 | Susana Martinez | 19 | Daughter | — | Colorado |
| 12 | Edwivigen Martinez | 16 | Daughter | — | Colorado |
| 13 | Ignacia Martinez | 15 | Daughter | — | Colorado |
| 14 | Solomon Martinez | 14 | Son | — | Colorado |
| 15 | Maria Martinez THIS PERSON | 10 | Daughter | — | Colorado |
| 16 | Max Martinez | 8 | Son | — | Colorado |
| 17 | Dorothy Martinez | 7 | Daughter | — | Colorado |
| 18 | Teresita Martinez | 6 | Daughter | — | Colorado |
| 19 | Abel Martinez | 4 | Son | — | Colorado |
| 20 | John E. Medina | 47 | Head | Farmer | Colorado |
| 21 | Beatrice Medina | 46 | Wife | — | Missouri |
| 22 | Carl Ab Medina | 22 | Son | Farm Laborer | Colorado |
| 23 | Irving Medina | 17 | Son | Farm Laborer | Colorado |
| 24 | Anita P. Medina | 39 | Head | — | New Mexico |
| 25 | Celestina Medina | 16 | Son | New Worker | Colorado |
| 26 | Clarinda Medina | 14 | Daughter | — | Colorado |
| 27 | Urban Medina | 11 | Son | — | Colorado |
| 28 | Delfino Medina | 9 | Son | — | Colorado |
| 29 | Margarita Medina | 6 | Daughter | — | Colorado |
| 30 | Montfortia Medina | 4 | Daughter | — | Colorado |
| 31 | Alberto Medina | 1 | Son | — | Colorado |
| 32 | Casaria Medina | 68 | Head | — | Colorado |
| 33 | Jesus Medina | 30 | Son | Farmer | Colorado |
| 34 | Juan Medina | 28 | Son | Farmer | Colorado |
| 35 | Cornelio Medina | 20 | Head | Farm Laborer | Colorado |
| 36 | Gracelda Medina | 18 | Wife | — | Colorado |
| 37 | Bernadita Medina | 0 | Daughter | — | Colorado |
| 38 | Frank Martinez | 41 | Head | Laborer | Colorado |
| 39 | Julianita Martinez | 35 | Wife | — | Colorado |
| 40 | Felix Martinez | 14 | Son | — | Colorado |
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)