KJ
Katherine Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Missouri
Our Model Tree links this Katherine Johnson across the 1930 and 1940 US Censuses in Jackson-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Missouri |
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Independence |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Independence |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Calvin Johnson | Son | — | 15 | ~1925 |
| Hattie Johnson | Spouse | — | 55 | ~1885 |
| Daniel Johnson | Son | — | 20 | ~1920 |
| Katherine Johnson | Daughter | — | 12 | ~1928 |
| Frederick Johnson | Son | — | 23 | ~1917 |
| Hattie Bell | Daughter | — | 29 | ~1911 |
| Barbara Johnson | Daughter | — | 10 | ~1930 |
| George Johnson | Son | — | 18 | ~1922 |
Census Appearances
1930
Jackson, Missouri
Daughter, age 2
Jackson, Missouri · implied b. ~1928 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Katherine M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Jackson-County, Missouri
Daughter, age 12
Jackson-County, Missouri · implied b. ~1928 — 8 household members
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Independence |
| 1935 Residence (County) | Jackson |
| Class of Worker | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Katherine Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katherine Johnson
Daughter · 1940 · age 12 · b. ~1928 · Missouri
★ You are viewing this record
Sibling
Hattie Bell
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Johnson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Calvin Johnson
Sibling · 1940 · age 15
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 — 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-t0627-02114-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hattie B Johnson | 55 | Wife | — | Missouri |
| 42 | Frederick Johnson | 23 | Son | Chauffeur | Missouri |
| 43 | Hattie May Bell | 29 | Daughter | Maid | Missouri |
| 44 | Daniel Johnson | 20 | Son | Chauffeur | Missouri |
| 45 | George Allen Johnson | 18 | Son | New Worker | Missouri |
| 46 | Calvin Johnson | 15 | Son | — | Missouri |
| 47 | Katherine Johnson THIS PERSON | 12 | Daughter | — | Missouri |
| 48 | Barbara Jean Johnson | 10 | Daughter | — | Missouri |
| 49 | Alice Audrey Beckham | 75 | Head | — | Missouri |
| 50 | Frank Marshall | 50 | Son in law | Laborer | Missouri |
| 51 | Ida Marshall | 54 | Daughter | — | Missouri |
| 52 | Ollie Robinson | 29 | Head | Laborer | Missouri |
| 53 | Thelma B Robinson | 33 | Wife | — | Missouri |
| 54 | Oliver Robinson | 13 | Son | — | Missouri |
| 55 | Juanita Robinson | 9 | Daughter | — | Missouri |
| 56 | Marvin Robinson | 7 | Son | — | Missouri |
| 57 | Laveta Robinson | 2 | Daughter | — | Missouri |
| 58 | Homer Isaac | 34 | Head | Laborer | Missouri |
| 59 | Hazel Isaac | 30 | Wife | — | Missouri |
| 60 | Marjorie Isaac | 8 | Daughter | Maid | Missouri |
| 61 | Ollie Isaac | 6 | Son | — | Missouri |
| 62 | Dementry Isaac | 5 | Son | — | Missouri |
| 63 | Wynetta Isaac | 5 | Daughter | — | Missouri |
| 64 | Harold Brinker | 33 | Head | Laborer | Missouri |
| 65 | Grace Brinker | 36 | Wife | — | Missouri |
| 66 | Yvonne Brinker | 11 | Daughter | — | Missouri |
| 67 | Virginia May Brinker | 9 | Daughter | — | Missouri |
| 68 | Harold Jr. Brinker | 6 | Son | — | Missouri |
| 69 | Albertine Brinker | 5 | Daughter | — | Missouri |
| 70 | Brinker | 2 | Son | — | Missouri |
| 71 | Letha Brockman | 45 | Head | Laundress | Missouri |
| 72 | Robert S Brockman | 19 | Son | New Worker | Missouri |
| 73 | George Whitmore | 58 | Head | Candy Maker | Illinois |
| 74 | Anna R Whitmore | 53 | Wife | — | Missouri |
| 75 | Adrian Fitzgerald | 35 | Son in law | Fireman | Missouri |
| 76 | Ida Langley | 70 | Mother in law | — | Missouri |
| 77 | Leslie Bell | 52 | Brother in law | — | Missouri |
| 78 | Doris Vaughan | 40 | Head | — | Iowa |
| 79 | Leonard Vaughan | 21 | Son | Bus Driver | Missouri |
| 80 | Richard Vaughan | 16 | Son | Attendant | Missouri |
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)