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Jacob Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Tompkins-County, New York
Our Model Tree links this Jacob Johnson across the 1920, 1930 and 1940 US Censuses in Tompkins-County, New York (XGBoost, ~Confirmed), with identified parents Charles & Chas — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Tompkins-County, New York |
| Surname | Johnson |
| Given Name | Jacob |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Ithaca City |
| 1935 Residence (County) | Tompkins |
| Additional Details | |
| Occupation | laborer |
| Industry | WPA |
| Class of Worker | GW |
| Hours Worked | 7 |
| Income (1939) | 210 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Laborer |
| Township / Ward | Ithaca City |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jacob | Age | Birth yr |
|---|---|---|---|---|
| Chas Johnson | Head | — | 75 | ~1865 |
| Albert Johnson | Son | — | 14 | ~1926 |
| Richard Johnson | Son | — | 17 | ~1923 |
| Raymond Johnson | Son | — | 18 | ~1922 |
| Jacob Johnson | Son | — | 21 | ~1919 |
Census Appearances
1920
Tompkins, New …
Son, age 1
Tompkins, New York · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jacob |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Tompkins, New …
Other, age 11
Tompkins, New York · implied b. ~1919 — 31 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jacob |
| Relationship to Head | Patient |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Tompkins-County, New …
Son, age 21
Tompkins-County, New York · implied b. ~1919 — 5 household members
| Surname | Johnson |
| Given Name | Jacob |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Ithaca City |
| 1935 Residence (County) | Tompkins |
| Occupation | laborer |
| Industry | WPA |
| Class of Worker | GW |
| Hours Worked | 7 |
| Income (1939) | 210 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Jacob Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Johnson (~0.92 confidence) and father Chas Johnson (~0.92 confidence) and mother Bertha Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Johnson
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Chas Johnson
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Bertha Johnson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jacob Johnson
Son · 1940 · age 21 · b. ~1919 · New York
★ You are viewing this record
Sibling
Richard Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Johnson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Johnson
Sibling · 1940 · age 18
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 — Tompkins-County, New York
Open full size
1940 US Federal Census — Tompkins-County, New York
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02792-00453)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Archie Moore | 61 | lodger | Cook | New York |
| 42 | Elizabeth Leonard | 64 | head | — | Eng. |
| 43 | Stanley Derr | 42 | head | Manager | Penn. |
| 44 | Mildred Derr | 40 | daughter | — | New York |
| 45 | Jeanne Derr | 13 | granddaughter | — | New York |
| 46 | James Derr | 5 | grandson | — | New York |
| 47 | Libby Leonard | 38 | daughter in law | Pantry Maid | Alabama |
| 48 | Barbara Leonard | 18 | granddaughter | — | Georgia |
| 49 | Helen Leonard | 15 | granddaughter | — | Georgia |
| 50 | Edward Whitlock | 36 | head | Truck Driver | New York |
| 51 | Julia Whitlock | 35 | wife | Laundress | New York |
| 52 | Edw. Jr. Whitlock | 11 | son | — | New York |
| 53 | Barbara Whitlock | 8 | daughter | — | New York |
| 55 | John C. Wye | 66 | head | — | Wash. D.C. |
| 56 | Lula Wye | 58 | wife | — | Michigan |
| 57 | Chas. Jr. Johnson | 24 | head | Laborer | New York |
| 58 | Irene Johnson | 19 | wife | — | New York |
| 59 | Edwin N. Johnson | 2 | son | — | New York |
| 60 | Chas. Jr. Johnson | 1 | son | — | New York |
| 62 | Chas. Sr. Johnson | 75 | head | — | New York |
| 63 | Jacob Johnson THIS PERSON | 21 | son | Laborer | New York |
| 64 | Raymond Johnson | 18 | son | — | New York |
| 65 | Richard Johnson | 17 | son | — | New York |
| 66 | Albert Johnson | 14 | son | — | New York |
| 67 | Elma Thomas | 24 | head | Sewing | New York |
| 68 | Chester Thomas | 8 | son | — | New York |
| 69 | Lois Thomas | 7 | daughter | — | New York |
| 70 | Beecher Briggs | 46 | head | Houseworker | New York |
| 71 | Walter Briggs | 19 | son | House Worker | New York |
| 72 | Warren L. Briggs | 15 | son | — | New York |
| 73 | Chas. Robbins | 31 | head | Janitor | New York |
| 74 | Ellen Robbins | 28 | wife | — | New York |
| 75 | Chas. Jr. Robbins | 6 | son | — | New York |
| 76 | Anna Robbins | 4 | daughter | — | New York |
| 77 | Ethel Richardson | 55 | head | — | B.W.I. |
| 78 | Leonard Richardson | 38 | son | Chef | B.W.I. |
| 79 | Maynard Richardson | 17 | son | — | New York |
| 80 | Elizabeth Richardson | 14 | granddaughter | — | New York |
Pedigree Summary
Jacob + 3 siblings
Gen 1 · 3 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)