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John Simon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Arapahoe-County, Colorado
Our Model Tree links this John Simon across the 1920, 1930 and 1940 US Censuses in Arapahoe-County, Colorado (XGBoost, ~Confirmed), with identified parents Anna & Anna — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Arapahoe-County, Colorado |
| Surname | Simon |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City of Englewood |
| 1935 Residence (County) | Arapahoe |
| Additional Details | |
| Occupation | Gardener |
| Industry | Father's Property |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Gardener |
| Township / Ward | City Of Englewood |
| Est. Birth Year | ~1917 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anna Simon | Spouse | — | 66 | ~1874 |
| John Simon | Son | — | 23 | ~1917 |
| John Simon | Head | — | 64 | ~1876 |
Census Appearances
1920
Arapahoe, Colorado
Son, age 2
Arapahoe, Colorado · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simon |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | New York |
| Mother's Birthplace | North Carolina |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Arapahoe, Colorado
Son, age 13
Arapahoe, Colorado · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simon |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | New York |
| Mother's Birthplace | North Carolina |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Arapahoe-County, Colorado
Son, age 23
Arapahoe-County, Colorado · implied b. ~1917 — 3 household members
| Surname | Simon |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City of Englewood |
| 1935 Residence (County) | Arapahoe |
| Occupation | Gardener |
| Industry | Father's Property |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Simon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Anna Simon (~0.92 confidence) and mother Anna Simon (~0.92 confidence) and father John Simon (~0.92 confidence) and father John Simon (~0.92 confidence) and father John Simon (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Anna Simon
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Anna Simon
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
John Simon
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Simon
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Simon
b. ~1877
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Simon
Son · 1940 · age 23 · b. ~1917 · Colorado
★ 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 — Arapahoe-County, Colorado
Open full size
1940 US Federal Census — Arapahoe-County, Colorado
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00455-00190)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Audrey Joy Lee Andrews | 10 | Daughter | — | Colorado |
| 2 | Wayne Andrews | 5 | Son | — | Colorado |
| 4 | Charles A. Lawrence | 50 | Head | Janitor | Colorado |
| 5 | Irene Lawrence | 37 | Wife | — | Oklahoma |
| 6 | Martha Eubanks | 74 | Head | — | Missouri |
| 8 | Frank H. Kirkpatrick | 73 | Head | — | Indiana |
| 9 | Mary Kirkpatrick | 72 | Wife | — | New York |
| 10 | Daniel Trupp | 27 | Head | Shipping Clerk | Colorado |
| 11 | Elizabeth Trupp | 24 | Wife | — | Montana |
| 12 | Gerald Wayne Trupp | 3 | Son | — | Colorado |
| 13 | Edward J. Thrift | 68 | Head | — | Illinois |
| 14 | Josephine Thrift | 61 | Wife | — | Indiana |
| 15 | Charles E. Tallantine | 66 | Head | Laborer | Sweden |
| 16 | Le Roy Miller | 24 | Head | Laborer | Colorado |
| 17 | Jacqueline Miller | 22 | Wife | — | Nebraska |
| 18 | Rayburn Miller | 2 | Son | — | Colorado |
| 19 | Marie Briggs Mercer | 62 | Head | Doctor | Canada |
| 20 | Dicie J. Morrow | 73 | Head | — | Iowa |
| 21 | Charles E. Taylor | 67 | Head | — | England |
| 22 | Nellie Taylor | 52 | Wife | — | Kentucky |
| 23 | Frank H. Dunton | 63 | Head | — | Nebraska |
| 24 | Gertrude Dunton | 60 | Wife | Cook | Nebraska |
| 25 | Hannah M. Erickson | 77 | Head | — | Illinois |
| 26 | Marie E. Yates | 37 | Daughter | Saleslady | Nebraska |
| 27 | Donald A. Yates | 38 | Son-in-law | Salesman | Nebraska |
| 28 | John Linnie Pearce | 14 | Grand-son | Yard-Boy | Nebraska |
| 29 | Nannie M. Wood | 51 | Head | — | Kansas |
| 30 | Vesta R. Wood | 22 | Daughter | Teacher | Kansas |
| 31 | John Dr. Simon | 64 | Head | Doctor | New York |
| 32 | Anna H. Simon | 66 | Wife | — | North Carolina |
| 33 | John Jr. Simon THIS PERSON | 23 | Son | Gardener | Colorado |
| 34 | Howell M. Dehart | 40 | Head | Doctor | Illinois |
| 35 | Alice J. Dehart | 37 | Wife | — | Colorado |
| 36 | Julia M. Dehart | 10 | Daughter | — | Colorado |
| 37 | Fannie L. Jones | 66 | Mother-in-law | — | Colorado |
| 38 | Amelia Dercher | 90 | Grand-Mother | — | West Virginia |
| 39 | Ray Compton | 43 | Head | Buffer | Missouri |
| 40 | Jeanette Compton | 45 | Wife | — | California |
Pedigree Summary
John
Gen 1 · 5 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)