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John Snyder — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Snyder across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Crayton & Charles — first a son (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Snyder |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Pasadena City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Medical Doctor |
| Industry | Medical Research Foundation |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Medical Doctor |
| Township / Ward | Pasadena City |
| Est. Birth Year | ~1911 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Crayton Snyder | Head | — | 64 | ~1876 |
| Myrtle Haskell | Other | — | 60 | ~1880 |
| John Snyder | Son | — | 29 | ~1911 |
| Zella Snyder | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Los Angeles, …
Son, age 9
Los Angeles, California · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snyder |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Nevada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Los Angeles, …
Son, age 19
Los Angeles, California · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Snyder |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Nevada |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Los-Angeles-County, California
Son, age 29
Los-Angeles-County, California · implied b. ~1911 — 4 household members
| Surname | Snyder |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Pasadena City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Medical Doctor |
| Industry | Medical Research Foundation |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 John Snyder across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Crayton Snyder (~0.92 confidence) and father Charles Snyder (~0.92 confidence) and mother Flora Snyder (~0.92 confidence) and mother Zella Snyder (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Crayton Snyder
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Charles Snyder
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Flora Snyder
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Zella Snyder
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Snyder
Son · 1940 · age 29 · b. ~1911 · California
★ You are viewing this record
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-t0627-00242-00347)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alma Dupree | 32 | Servant | Housekeeper | Kansas |
| 42 | Crayton Snyder | 64 | Head | Surgeon | Utah |
| 43 | Zella M. Snyder | 60 | Wife | — | Nevada |
| 44 | John C. Snyder THIS PERSON | 29 | Son | Medical Doctor | Utah |
| 45 | Myrtle Haskell | 60 | Servant | Housekeeper | Ohio |
| 46 | Josephine Curtis | 88 | Head | — | New York |
| 47 | Lella Cairns | 55 | Daughter | — | Illinois |
| 48 | R. Bruce Cairns | 68 | Nephew | — | Illinois |
| 49 | Joseph Taft | 62 | Head | Salesman | Illinois |
| 50 | Annie Taft | 57 | Wife | — | Pennsylvania |
| 51 | Mary E. Mower | 92 | Head | — | Illinois |
| 52 | Mary B. Mower | 64 | Daughter | — | Illinois |
| 53 | John Wagner | 74 | Head | — | Pennsylvania |
| 54 | Laura E. Wagner | 73 | Wife | — | Pennsylvania |
| 55 | Jean Tannehill | 56 | Head | — | New York |
| 56 | John Tannehill | 53 | Husband | Filling Station Owner | Indiana |
| 57 | Bill Tannehill | 25 | Son | Filling Station Owner | Nebraska |
| 58 | Lucy Bradman | 51 | Lodger | Office Nurse | Illinois |
| 59 | Anne Bishop | 65 | Lodger | — | Scotland |
| 60 | Fred Palmer | 83 | Head | — | Michigan |
| 61 | Lucie Palmer | 80 | Wife | — | Michigan |
| 62 | Lou S. Perkins | 57 | Head | Private Secretary | Iowa |
| 63 | Kery E. Perkins | 23 | Son | Transportation Agent | Iowa |
| 64 | Charles Hayward | 58 | Head | Salesman | England |
| 65 | Lucile Hayward | 47 | Wife | — | Pennsylvania |
| 66 | Adelaide Deveraux | 64 | Head | — | South Dakota |
| 67 | Emil Bayer | 79 | Head | Housekeeper | Iowa |
| 68 | Marcella Harrington | 60 | Servant | Housekeeper | Wisconsin |
| 69 | Ezekiel Hopkins | 60 | Head | — | Pennsylvania |
| 70 | Helen Cuppock | 40 | Servant | General Housework | Iowa |
| 71 | Maria V. Shideler | 71 | Head | — | Nebraska |
| 72 | Henry F. Shideler | 47 | Son | — | California |
| 73 | Mabel S. Jordan | 52 | Head | — | Minnesota |
| 74 | Richard L. Jordan | 29 | Son | Patrolman | Minnesota |
| 75 | Eve Jordan Jordan | 24 | Daughter in law | — | Hawaii |
| 76 | Robert Jordan | 1 | Grandson | — | Hawaii |
| 77 | Lella Hendrick | 72 | Head | — | Missouri |
| 78 | Addie Winans | 53 | Head | — | New Jersey |
| 79 | Eleanor Winans | 17 | Ward | — | New Jersey |
| 80 | Elizabeth Hathaway | 32 | Head | School Teacher | Missouri |
Pedigree Summary
John
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)