MS
Mary Snider — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Decatur-County, Iowa
Our Model Tree links this Mary Snider across the 1930 and 1940 US Censuses in Decatur-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Decatur-County, Iowa |
| Surname | Snider |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Center Township |
| 1935 Residence (County) | Decatur County |
| Additional Details | |
| Highest Grade | S 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Center Township |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Snider | Daughter | — | 11 | ~1929 |
| Robert Snider | Son | — | 16 | ~1924 |
| Caroline Snider | Daughter | — | 8 | ~1932 |
| Keith Snider | Head | — | 37 | ~1903 |
| Fred Snider | Son | — | 18 | ~1922 |
| Elizabeth Snider | Spouse | — | 36 | ~1904 |
| Clete Snider | Son | — | 6 | ~1934 |
Census Appearances
1930
Decatur, Iowa
Daughter, age 1
Decatur, Iowa · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snider |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Decatur-County, Iowa
Daughter, age 11
Decatur-County, Iowa · implied b. ~1929 — 7 household members
| Surname | Snider |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Center Township |
| 1935 Residence (County) | Decatur County |
| Highest Grade | S 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Snider across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Snider
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Caroline Snider
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clete Snider
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Snider
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Snider
Sibling · 1940 · age 18
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 — Decatur-County, Iowa
Open full size
1940 US Federal Census — Decatur-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01154-00394)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fred Stephens | 23 | Head | Farmer | Iowa |
| 42 | Doris Stephens | 24 | Wife | — | Iowa |
| 43 | John S. Warrenstaff | 71 | Head | — | Iowa |
| 44 | Mary H. Warrenstaff | 61 | Wife | — | Iowa |
| 45 | Earl Collins | 37 | Head | Farmer | Nebraska |
| 46 | Jennie Collins | 30 | Wife | — | Iowa |
| 47 | Virginia Collins | 12 | Daughter | — | Iowa |
| 48 | Clifford Peters | 38 | Head | Farmer | Iowa |
| 49 | Grace Peters | 38 | Wife | — | Iowa |
| 50 | Joan Peters | 6 | Daughter | — | Iowa |
| 51 | Barbara Jean Peters | 4 | Daughter | — | Iowa |
| 52 | Richard Peters | 2 | Son | — | Iowa |
| 53 | Vera Mustain | 20 | Step-daughter | — | Iowa |
| 54 | Leland Mustain | 18 | Step-son | — | Colorado |
| 55 | Jerry Mustain | 15 | Step-son | — | Colorado |
| 56 | Keith Snider | 37 | Head | Stock Buyer | Iowa |
| 57 | Elizabeth Snider | 36 | Wife | — | Iowa |
| 58 | Fred Snider | 18 | Son | Delivery Boy | Iowa |
| 59 | Robert Snider | 16 | Son | — | Iowa |
| 60 | Mary Ellen Snider THIS PERSON | 11 | Daughter | — | Iowa |
| 61 | Caroline Snider | 8 | Daughter | — | Iowa |
| 62 | Clete Snider | 6 | Son | — | Iowa |
| 63 | Job Burns | 65 | Head | — | Iowa |
| 64 | Norah Burns | 56 | Wife | — | Iowa |
| 65 | John Burns | 22 | Son | Farmer | Iowa |
| 66 | Katherine Burns | 17 | Daughter | — | Missouri |
| 67 | Gerald Burns | 6 | Grandson | — | Missouri |
| 68 | James Huran | 81 | Head | Farmer | Iowa |
| 69 | Laura Huran | 66 | Wife | — | Iowa |
| 70 | Eldon Maynard | 26 | Head | Farmer | Missouri |
| 71 | Dale Maynard | 23 | Wife | — | Iowa |
| 72 | James Maynard | 2 | Son | — | Iowa |
| 73 | Dan E. Moore | 49 | Head | Farmer | Missouri |
| 74 | Clara Moore | 53 | Wife | — | Iowa |
| 75 | Marguerite Moore | 16 | Daughter | — | Iowa |
| 76 | Hephurn Anderson | 25 | Head | Farmer | Iowa |
| 77 | Mary Anderson | 25 | Wife | — | Iowa |
| 78 | Jean Audrey Anderson | 2 | Son | — | Iowa |
| 79 | Dane Thurman | 51 | Head | Farmer | Iowa |
| 80 | Minnie Thurman | 44 | Wife | — | Iowa |
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)