MG
Mary Garcia — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Garcia across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Garcia |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1927 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| David Garcia | Son | — | 6 | ~1934 |
| Esperanza Garcia | Daughter | — | 3 | ~1937 |
| Mary Garcia | Daughter | — | 13 | ~1927 |
| Alfred Garcia | Son | — | 15 | ~1925 |
| Salvador Garcia | Son | — | 11 | ~1929 |
| Jessie Garcia | Daughter | — | 9 | ~1931 |
| Felix Garcia | Spouse | — | 32 | ~1908 |
| Louis Garcia | Head | — | 43 | ~1897 |
Census Appearances
1930
Cook, Illinois
Daughter, age 3
Cook, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Guarcia |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 13
Cook-County, Illinois · implied b. ~1927 — 8 household members
| Surname | Garcia |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | 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 Mary Garcia across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Garcia
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Alfred Garcia
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Garcia
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Garcia
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esperanza Garcia
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Salvador Garcia
Sibling · 1940 · age 11
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00941-00688)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ann Schantz | 24 | Daughter | Cashier | Illinois |
| 42 | Florence Schantz | 22 | Daughter | Office | Illinois |
| 43 | Joe Schantz | 20 | Son | Laborer | Illinois |
| 44 | Rose Schantz | 16 | Daughter | — | Illinois |
| 45 | Jess Campbell | 49 | Head | Switchman | Illinois |
| 46 | Gertrude Campbell | 44 | Wife | — | Missouri |
| 47 | Jess Jr Campbell | 20 | Son | Truck Driver | Missouri |
| 48 | Antonio Mannella | 50 | Head | Street Cleaner | Italy |
| 49 | Mary Mannella | 20 | Daughter | — | Illinois |
| 50 | Angelo Mannella | 18 | Son | New Worker | Illinois |
| 51 | Tony Mannella | 16 | Son | — | Illinois |
| 52 | Fred Mannella | 14 | Son | — | Illinois |
| 53 | Metrio Hereda | 60 | Brother | Janitor | Italy |
| 54 | Sara Hereda | 30 | Head | — | Mexico |
| 55 | Claud Hereda | 6 | Son | — | Illinois |
| 56 | Uleto Hernandez | 28 | Niece | Laborer | Mexico |
| 57 | Mike Hernandez | 40 | Head | Laborer | Mexico |
| 58 | Clarice Hernandez | 39 | Wife | — | Mexico |
| 59 | Fidel Hernandez | 39 | Lodger | Laborer | Mexico |
| 60 | Otto Schmid | 31 | Head | Factory Work | Germany |
| 61 | Leona Schmid | 23 | Wife | Factory Girl | Illinois |
| 62 | Mary Ortiz | 31 | Head | — | Mexico |
| 63 | Blad Ortiz | 17 | Son | New Worker | Kansas |
| 64 | Jennie Ortiz | 15 | Daughter | — | Kansas |
| 65 | Isabel Ortiz | 7 | Daughter | — | Illinois |
| 66 | Louis Garcia | 43 | Head | Laborer | Mexico |
| 67 | Felix Garcia | 32 | Wife | — | Mexico |
| 68 | Alfred Garcia | 15 | Son | — | Illinois |
| 69 | Mary Garcia THIS PERSON | 13 | Daughter | — | Illinois |
| 70 | Salvador Garcia | 11 | Son | — | Illinois |
| 71 | Jessie Garcia | 9 | Daughter | — | Illinois |
| 72 | David Garcia | 6 | Son | — | Illinois |
| 73 | Esperanza Garcia | 3 | Daughter | — | Illinois |
| 74 | Joe Almanza | 40 | Head | Laborer | Mexico |
| 75 | Mary Almanza | 35 | Wife | — | Mexico |
| 76 | Jessie Almanza | 15 | Son | — | Mexico |
| 77 | Augustine Almanza | 13 | Son | — | Illinois |
| 78 | Beatrice Almanza | 9 | Daughter | — | Illinois |
| 79 | Peter Almanza | 6 | Son | — | Illinois |
| 80 | Michael Almanza | 5 | Son | — | Illinois |
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)