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John Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Missouri
Our Model Tree links this John Mason across the 1920, 1930 and 1940 US Censuses in Jackson-County, Missouri (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 3-person household.
Age 39
b. ~1901
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Missouri |
| Surname | Mason |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | clerk |
| Industry | City Water Dept |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2150 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Clerk |
| Township / Ward | Kansas City |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Betty Mason | Daughter | — | 10 | ~1930 |
| John Mason | Head | — | 39 | ~1901 |
| Estadia Mason | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Jackson, Missouri
Other, age 20
Jackson, Missouri · implied b. ~1900 — 15 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John H. |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jackson, Missouri
Head, age 30
Jackson, Missouri · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 21 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Occupation | Accountant |
| Industry | Car Rental |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jackson-County, Missouri
Head, age 39
Jackson-County, Missouri · implied b. ~1901 — 3 household members
| Surname | Mason |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Occupation | clerk |
| Industry | City Water Dept |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2150 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mason
Head · 1940 · age 39 · b. ~1901 · Missouri
★ 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 — Jackson-County, Missouri
Open full size
1940 US Federal Census — Jackson-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02180-00672)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sophronia B Summers | 65 | Wife | — | Missouri |
| 42 | Ernest R Summers | 40 | Head | Bookkeeper | Missouri |
| 43 | Michael E Summers | 38 | Wife | — | Missouri |
| 44 | Eugene Summers | 5 | Son | — | Missouri |
| 45 | Stephen Andrews | 59 | Head | Civil Engineer | New York |
| 46 | Louise S Andrews | 53 | Wife | — | Kansas |
| 47 | Nelson Andrews | 21 | Son | Draftsman | Missouri |
| 48 | Cecil K Groves | 30 | Head | Accountant | Missouri |
| 49 | Lillian Groves | 28 | Wife | Secretary | Illinois |
| 50 | Effie S Martin | 51 | Head | Secretary | Missouri |
| 51 | Martha E Martin | 79 | Mother | — | Missouri |
| 52 | August Jr Geiss | 40 | Head | Salesman | Missouri |
| 53 | Elsie A Geiss | 38 | Wife | — | Missouri |
| 54 | Edward Geiss | 17 | Son | — | Missouri |
| 55 | August Sr. Geiss | 85 | Father | — | Germany |
| 56 | Scott D Shawger | 46 | Head | Solicitor | Missouri |
| 57 | Gladys P Shawger | 42 | Wife | — | Missouri |
| 58 | Scott D Jr Shawger | 16 | Son | — | Missouri |
| 59 | Nancy Shawger | 11 | Daughter | — | Missouri |
| 60 | Oliver Berry | 70 | Father-in-law | Salesman | Kansas |
| 61 | Gertrude Berry | 64 | Mother-in-law | — | Kansas |
| 62 | John T Okie | 58 | Head | Manager | Missouri |
| 63 | Bessie Okie | 55 | Wife | — | Missouri |
| 64 | Emma Wilson | 49 | Head | Invalid | Missouri |
| 65 | Mildred James | 52 | Nurse | Nursing | Kansas |
| 66 | Clarence Brewer | 64 | Head | Caretaker | Missouri |
| 67 | John H Mason THIS PERSON | 39 | Head | Clerk | Kentucky |
| 68 | Estadia C Mason | 33 | Wife | Comptometer | Kansas |
| 69 | Betty J Mason | 10 | Daughter | — | Missouri |
| 70 | Henry G Alvis | 40 | Head | Salesman Machinist | Indiana |
| 71 | Naomi Alvis | 40 | Wife | — | Texas |
| 72 | Martha Alvis | 16 | Daughter | — | Kansas |
| 73 | Joseph Alvis | 14 | Son | — | Missouri |
| 74 | Benjamin Alvis | 10 | Son | — | Missouri |
| 75 | Henry Jr Alvis | 8 | Son | — | Missouri |
| 76 | Neoma Marlett | 24 | Servant | Servant | Missouri |
| 77 | Elmer B Rident | 41 | Head | Bus Driver | Iowa |
| 78 | Julia Rident | 33 | Wife | Teletype Operator | Missouri |
| 79 | Harvey D Pollard | 51 | Head | Salesman | Illinois |
| 80 | Lillian M Pollard | 45 | Wife | — | Kansas |
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)