KJ
Katherine Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mecklenburg-County, North Carolina
Our Model Tree links this Katherine Johnson across the 1930 and 1940 US Censuses in Mecklenburg-County, North Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mecklenburg-County, North Carolina |
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charlotte City |
| 1935 Residence (County) | Mecklenburg |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Charlotte City |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Beatrice Johnson | Daughter | — | 6 | ~1934 |
| Carl Johnson | Son | — | 5 | ~1935 |
| Roland Johnson | Son | — | 2 | ~1938 |
| Clara Johnson | Spouse | — | 38 | ~1902 |
| Girleen Johnson | Daughter | — | 15 | ~1925 |
| Katherine Johnson | Daughter | — | 13 | ~1927 |
| Sam Johnson | Head | — | 38 | ~1902 |
Census Appearances
1930
Mecklenburg, North …
Daughter, age 3
Mecklenburg, North Carolina · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kathyrine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Mecklenburg-County, North …
Daughter, age 13
Mecklenburg-County, North Carolina · implied b. ~1927 — 7 household members
| Surname | Johnson |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charlotte City |
| 1935 Residence (County) | Mecklenburg |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 13 · b. ~1927 · North Carolina
★ You are viewing this record
Sibling
Carl Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Girleen Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Johnson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roland Johnson
Sibling · 1940 · age 2
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 — Mecklenburg-County, North Carolina
Open full size
1940 US Federal Census — Mecklenburg-County, North Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02942-00060)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elsie B. Benefield | 1 | Daughter | — | North Carolina |
| 42 | Robert L. Leopard | 25 | Head | Framer | North Carolina |
| 43 | Hazel E. Leopard | 20 | Wife | — | North Carolina |
| 44 | James E. Leopard | 2 | Son | — | North Carolina |
| 45 | Fred E. Thrower | 30 | Head | Weaver | North Carolina |
| 46 | Sallie D. Thrower | 28 | Wife | Pick Out | South Carolina |
| 47 | Earl E. Thrower | 7 | Son | — | North Carolina |
| 48 | Betty G. Thrower | 5 | Daughter | — | North Carolina |
| 49 | Emily L. Thrower | 1 | Daughter | — | North Carolina |
| 50 | Jack D. Cole | 29 | Head | Weaver | North Carolina |
| 51 | Elizabeth Cole | 33 | Wife | Smash Hand | North Carolina |
| 52 | William C. Cole | 45 | Son | — | North Carolina |
| 53 | Dolly Wilson | 18 | Housekeeper | Housekeeper | North Carolina |
| 54 | Berta W. Grump|Grumps | 40 | Head | Draw Hand | North Carolina |
| 55 | Cora M. Grump|Grumps | 38 | Wife | — | North Carolina |
| 56 | Claude Grump|Grumps | 17 | Son | Sweeper | North Carolina |
| 57 | Robert L. Grump|Grumps | 15 | Son | — | North Carolina |
| 58 | Ella J. Grump|Grumps | 13 | Daughter | — | North Carolina |
| 59 | Berta M. Grump|Grumps | 10 | Daughter | — | North Carolina |
| 60 | Roy E. Grump|Grumps | 6 | Son | — | North Carolina |
| 61 | Clarence C. Grump|Grumps | 3 | Son | — | North Carolina |
| 62 | Thomas D. Grump|Grumps | 0 | Son | — | North Carolina |
| 63 | John L. Epply | 56 | Head | Loom Fixer | South Carolina |
| 64 | Bertha M. Epply | 55 | Wife | — | South Carolina |
| 65 | Fred W. Epply | 35 | Son | Salesman | South Carolina |
| 66 | Fred J. Philman | 31 | Head | Weaver | North Carolina |
| 67 | Ruth Philman | 21 | Wife | — | South Carolina |
| 68 | Fred H. Philman | 4 | Son | — | North Carolina |
| 69 | William A. Philman | 4 | Son | — | North Carolina |
| 70 | Forest Philman | 1 | Son | — | North Carolina |
| 71 | Sam Johnson | 38 | Head | Doffer | South Carolina |
| 72 | Clara Johnson | 38 | Wife | Spinner | South Carolina |
| 73 | Girleen Johnson | 15 | Daughter | — | South Carolina |
| 74 | Katherine Johnson THIS PERSON | 13 | Daughter | — | South Carolina |
| 75 | Beatrice Johnson | 6 | Daughter | — | South Carolina |
| 76 | Carl Johnson | 5 | Son | — | North Carolina |
| 77 | Roland Johnson | 2 | Son | — | North Carolina |
| 78 | Johnson | 0 | Son | — | North Carolina |
| 79 | Albert Taylor | 28 | Head | Weaver | North Carolina |
| 80 | Annie Taylor | 26 | Wife | — | North Carolina |
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)