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Maria Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Maria Lopez across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 8-person household.
Age 49
b. ~1891
Female
Spouse
Born: New Mexico
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Lopez |
| Given Name | Maria V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | Los Angeles City |
| Additional Details | |
| Occupation | Housekeeper |
| Industry | Residence |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 156 |
| Highest Grade | No 6 |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
| Occupation | Housekeeper |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1891 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Vicente Lopez | Head | — | 57 | ~1883 |
| Juana Lopez | Daughter | — | 17 | ~1923 |
| Virginia Lopez | Daughter | — | 11 | ~1929 |
| Vicente Lopez | Son | — | 15 | ~1925 |
| Erlinda Lopez | Daughter | — | 14 | ~1926 |
| Maria Lopez | Spouse | — | 49 | ~1891 |
| Margarita Lopez | Daughter | — | 18 | ~1922 |
| Reymundo Lopez | Son | — | 12 | ~1928 |
Census Appearances
1930
Los Angeles, …
Spouse, age 40
Los Angeles, California · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mexican |
| Age | 40 |
| Marital Status | Married |
| Birthplace | New Mexico |
| Age at First Marriage | 30 |
| Father's Birthplace | New Mexico |
| Mother's Birthplace | New Mexico |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
1940
Los-Angeles-County, California
Spouse, age 49
Los-Angeles-County, California · implied b. ~1891 — 8 household members
| Surname | Lopez |
| Given Name | Maria V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | Los Angeles City |
| Occupation | Housekeeper |
| Industry | Residence |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 156 |
| Highest Grade | No 6 |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
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 Lopez across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Maria Lopez
Spouse · 1940 · age 49 · b. ~1891 · California
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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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00385-00365)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lorenzo D. Orozco | 21 | son | Pressman | Texas |
| 2 | Vicente O. Lopez | 57 | Head | Concrete Laborer | New Mexico |
| 3 | Maria V. Lopez THIS PERSON | 49 | Wife | Housekeeper | New Mexico |
| 4 | Margarita Lopez | 18 | daughter | New Worker | California |
| 5 | Juana Lopez | 17 | daughter | New Worker | California |
| 6 | Vicente V. Lopez | 15 | son | — | California |
| 7 | Erlinda Lopez | 14 | daughter | — | California |
| 8 | Reymundo Lopez | 12 | son | — | California |
| 9 | Virginia Lopez | 11 | daughter | — | California |
| 10 | Rebecca O. Perez | 57 | Head | — | Mexico |
| 11 | Jose Perez | 24 | son | Mechanic | New Mexico |
| 12 | Margarita Jimenez | 64 | sister | — | Mexico |
| 13 | Joe Diaz | 38 | Head | Milk Tester | Mexico |
| 14 | Delores Diaz | 38 | Wife | — | Mexico |
| 15 | Andrew Diaz | 15 | son | — | California |
| 16 | Rudolph Diaz | 12 | son | — | California |
| 17 | Joe Jr. Diaz | 9 | son | — | California |
| 18 | Armida Diaz | 7 | daughter | — | California |
| 19 | Lawrence Diaz | 3 | son | — | California |
| 20 | Louise Diaz | 2 | daughter | — | California |
| 21 | Helen Diaz | 1 | daughter | — | California |
| 22 | Raymond G. Espinoza | 35 | Head | Sampler Tester | Arizona |
| 23 | Artemisa G. Espinoza | 26 | Wife | Hat Maker, Hand | Arizona |
| 24 | Isabel G. Espinoza | 15 | daughter | — | Arizona |
| 25 | Manuel G. Espinoza | 14 | son | — | California |
| 26 | Irene G. Espinoza | 13 | daughter | — | California |
| 27 | Raymond G. Espinoza | 12 | son | — | California |
| 28 | Dolores G. Espinoza | 11 | daughter | — | California |
| 29 | Jesus S. Diaz | 56 | Head | Hand Tortilla Maker | Mexico |
| 30 | Marcos Hernandez | 65 | Head | Laborer | Mexico |
| 31 | Jose Herrera | 45 | Lodger | B. Layer | Mexico |
| 32 | Francisca Herrera | 40 | Lodger's Wife | Hand Tortilla Maker | Mexico |
| 33 | Vilfido Herrera | 16 | Lodger's son | — | California |
| 34 | Ruplito M. Maiz | 48 | Head | Cement Spreader | Mexico |
| 35 | Carlota A. Maiz | 44 | Wife | — | Mexico |
| 36 | Guadalupe A. Maiz | 17 | daughter | Seamstress | California |
| 37 | Enrique A. Maiz | 15 | son | — | California |
| 38 | Rafael A. Maiz | 8 | son | — | California |
| 39 | Ruth D. O. Almas | 37 | Head | Housekeeper | Arizona |
| 40 | Annabelle Almas | 17 | daughter | — | Arizona |
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)