MS
Mary Snyder — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calhoun-County, Illinois
Our Model Tree links this Mary Snyder across the 1930 and 1940 US Censuses in Calhoun-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, Illinois |
| Surname | Snyder |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Batchtown Village |
| 1935 Residence (County) | Calhoun |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Batchtown Village |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elnora Snyder | Daughter | — | 15 | ~1925 |
| Mary Snyder | Daughter | — | 10 | ~1930 |
| Anne Snyder | Daughter | — | 12 | ~1928 |
| Charles Snyder | Head | — | 53 | ~1887 |
| Elmer Snyder | Son | — | 7 | ~1933 |
| William Snyder | Son | — | 18 | ~1922 |
| Charles Snyder | Son | — | 4 | ~1936 |
| Mayme Snyder | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Calhoun, Illinois
Daughter, age
Calhoun, Illinois · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snyders |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Calhoun-County, Illinois
Daughter, age 10
Calhoun-County, Illinois · implied b. ~1930 — 8 household members
| Surname | Snyder |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Batchtown Village |
| 1935 Residence (County) | Calhoun |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Snyder across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Snyder
Daughter · 1940 · age 10 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Elnora Snyder
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Snyder
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Snyder
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Snyder
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Snyder
Sibling · 1940 · age 12
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 — Calhoun-County, Illinois
Open full size
1940 US Federal Census — Calhoun-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00763-00211)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Coyle Knaut | 43 | Head | Driller | Illinois |
| 42 | Tidie Knaut | 34 | Wife | — | Illinois |
| 43 | Helen Wilson | 5 | Niece | — | Illinois |
| 44 | David Burns | 31 | Head | Truck Driver | Illinois |
| 45 | Valerie Burns | 23 | Wife | — | Illinois |
| 46 | Carole Burns | 1 | Daughter | — | Illinois |
| 47 | Charles Maguire | 80 | Head | — | Illinois |
| 48 | Rose Maguire | 57 | Wife | — | Missouri |
| 49 | Tom Maguire | 24 | Son | Foreman | Illinois |
| 50 | Phillip Maguire | 15 | Son | — | Illinois |
| 51 | Dewey Carpenter | 37 | Head | School Superintendent | Illinois |
| 52 | Elda Carpenter | 27 | Wife | — | Illinois |
| 53 | Wayne Wallendorf | 9 | Step-son | — | Illinois |
| 54 | Rodney Wallendorf | 6 | Step-son | — | Illinois |
| 55 | John B. Flass | 50 | Head | Truck Driver | Illinois |
| 56 | Bernice Flass | 47 | Wife | Waitress | Illinois |
| 57 | Torella Flass | 18 | Daughter | Waitress | Illinois |
| 58 | Janice Flass | 16 | Daughter | — | Illinois |
| 59 | Dora Jane Flass | 9 | Daughter | — | Illinois |
| 60 | George Gant | 74 | Uncle | — | Illinois |
| 61 | Charles Snyder | 53 | Head | Laborer | Illinois |
| 62 | Mayme Snyder | 41 | Wife | — | Missouri |
| 63 | William Snyder | 18 | Son | Truck Driver | Illinois |
| 64 | Elnora Snyder | 15 | Daughter | — | Illinois |
| 65 | Anne Mae Snyder | 12 | Daughter | — | Illinois |
| 66 | Mary Snyder THIS PERSON | 10 | Daughter | — | Illinois |
| 67 | Elmer Snyder | 7 | Son | — | Illinois |
| 68 | Charles Snyder | 4 | Son | — | Illinois |
| 69 | Anna Bailey | 77 | Head | — | Illinois |
| 70 | Bruce Bailey | 14 | Grandson | — | Illinois |
| 71 | Thomas Lane | 73 | Head | — | Illinois |
| 72 | Mary Jane Lane | 66 | Wife | — | Illinois |
| 73 | Anna Mockenhoupt | 73 | Head | — | Germany |
| 74 | Loretta Mockenhoupt | 26 | Daughter | Floor Worker | Illinois |
| 75 | Glenn Nevius | 47 | Head | Commercial Teacher | Illinois |
| 76 | Frances Nevius | 49 | Wife | — | Illinois |
| 77 | Vail Nevius | 18 | Son | — | Illinois |
| 78 | Eva Nevius | 17 | Daughter | — | Illinois |
| 79 | Cecil Nevius | 11 | Son | — | Illinois |
| 80 | Vesta Nevius | 5 | Daughter | — | 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)