HS
Helen Snyder — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Illinois
Our Model Tree links this Helen Snyder across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Illinois (XGBoost, ~Confirmed), with identified parents Alden & Alden — first a daughter (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Illinois |
| Surname | Snyder |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Hillsboro |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Hillsboro |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Florence Snyder | Spouse | — | 50 | ~1890 |
| Robert Snyder | Son | — | 17 | ~1923 |
| Alden Snyder | Head | — | 57 | ~1883 |
| Helen Snyder | Daughter | — | 21 | ~1919 |
Census Appearances
1920
Montgomery, Illinois
Daughter, age 2
Montgomery, Illinois · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snyder |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Montgomery, Illinois
Daughter, age 11
Montgomery, Illinois · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snyder |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Montgomery-County, Illinois
Daughter, age 21
Montgomery-County, Illinois · implied b. ~1919 — 4 household members
| Surname | Snyder |
| Given Name | Helen E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Hillsboro |
| 1935 Residence (County) | Montgomery |
| Highest Grade | Hs 4 |
| 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 Helen Snyder across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alden Snyder (~0.92 confidence) and father Alden Snyder (~0.92 confidence) and mother Florence Snyder (~0.92 confidence) and mother Florence Snyder (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alden Snyder
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Alden Snyder
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Florence Snyder
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Florence Snyder
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Snyder
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Robert Snyder
Sibling · 1940 · age 17
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 — Montgomery-County, Illinois
Open full size
1940 US Federal Census — Montgomery-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00860-00353)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary E. Manning | 36 | Daughter | Teacher | Illinois |
| 42 | Alfred R. Henderson | 34 | Head | Driller | Oklahoma |
| 43 | Pearl A. Henderson | 27 | Wife | — | Texas |
| 44 | William Leisoff | 63 | Head | — | Czechoslovakia |
| 45 | Josephine Leisoff | 64 | Wife | — | Austria |
| 46 | G. Addison Johnson | 63 | Head | Carpenter | Illinois |
| 47 | Gertrude S. Johnson | 63 | Wife | — | Illinois |
| 48 | Mary J. Reeves | 70 | Head | — | Illinois |
| 49 | Carmi G. Striegel | 63 | Sister | — | Illinois |
| 50 | Charles A. Close | 59 | Head | Watchman | Illinois |
| 51 | Margaret Close | 52 | Wife | — | New Jersey |
| 52 | Marjorie J. Close | 23 | Daughter | Saleslady | Illinois |
| 53 | Norma E. Close | 22 | Daughter | Stenographer | Illinois |
| 54 | Clarence H. Chaudoin | 34 | Head | Assistant Engineer | Kentucky |
| 55 | Olive C. Chaudoin | 31 | Wife | — | Pennsylvania |
| 56 | George S. Chaudoin | 9 | Son | — | Illinois |
| 57 | Dale Clifford | 33 | Head | Project Engineer | Illinois |
| 58 | Maxine L. Clifford | 29 | Wife | — | Illinois |
| 59 | Howard P. Clifford | 1 | Son | — | Illinois |
| 60 | Byron H. Thomas | 36 | Head | Driller | Texas |
| 61 | Ruby R. Thomas | 24 | Wife | Waitress | Kansas |
| 62 | Billy J. Thomas | 8 | Daughter | — | Texas |
| 63 | Alva R. Denton | 68 | Head | — | Illinois |
| 64 | Victoria A. Denton | 66 | Wife | — | Illinois |
| 65 | George S. Chase | 58 | Head | — | Missouri |
| 66 | Augusta Renner | 73 | Housekeeper | — | Germany |
| 67 | Kenneth D. Burris | 41 | Head | Truck Driver | Illinois |
| 68 | Mary E. Burris | 41 | Wife | — | Illinois |
| 69 | Eunice M. Burris | 18 | Daughter | — | Illinois |
| 70 | Olyne J. Burris | 13 | Daughter | — | Illinois |
| 71 | Alden E. Snyder | 57 | Head | Advisor | Illinois |
| 72 | Florence L. Snyder | 50 | Wife | — | Illinois |
| 73 | Helen E. Snyder THIS PERSON | 21 | Daughter | — | Illinois |
| 74 | Robert E. J. Snyder | 17 | Son | Salesman | Illinois |
| 75 | Rosa Riley | 76 | Head | — | Illinois |
| 76 | Grace R. Riley | 41 | Daughter | Teacher | Illinois |
| 77 | Harriet Green | 39 | Daughter | Saleslady | Illinois |
| 78 | Rosalie Green | 16 | Granddaughter | — | Illinois |
| 79 | Herman Dick | 43 | Head | Lineman | Mississippi |
| 80 | Gladys Dick | 36 | Wife | — | Alabama |
Pedigree Summary
Helen + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)