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John Mack — 1940 US Census Record
Model Tree available1940 United States Federal Census · Orangeburg-County, South Carolina
Our Model Tree links this John Mack across the 1920, 1930 and 1940 US Censuses in Orangeburg-County, South Carolina (XGBoost, ~Confirmed), with identified parents John & Caroline — first a son (b.~1920), then head of a 12-person household.
Age 20
b. ~1920
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Orangeburg-County, South Carolina |
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Limestone Twp |
| 1935 Residence (County) | Orangeburg |
| Additional Details | |
| Occupation | labor |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 888 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Labor |
| Township / Ward | Limestone Twp |
| Est. Birth Year | ~1920 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Moses Mack | Son | — | 8 | ~1932 |
| Mary Mack | Daughter | — | 18 | ~1922 |
| Sarah Mack | Daughter | — | 12 | ~1928 |
| James Mack | Son | — | 4 | ~1936 |
| Jacob Mack | Son | — | 10 | ~1930 |
| Willie Mack | Son | — | 3 | ~1937 |
| Jacob Mack | Head | — | 48 | ~1892 |
| Texas Mack | Daughter | — | 17 | ~1923 |
| Alice Mack | Daughter | — | 13 | ~1927 |
| John Mack | Son | — | 20 | ~1920 |
| Hattie Mack | Spouse | — | 40 | ~1900 |
| David Mack | Son | — | 2 | ~1938 |
Census Appearances
1920
Orangeburg, South …
Son, age 2
Orangeburg, South Carolina · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| 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 |
1930
Orangeburg, South …
Son, age 10
Orangeburg, South Carolina · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| 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
Orangeburg-County, South …
Son, age 20
Orangeburg-County, South Carolina · implied b. ~1920 — 12 household members
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Limestone Twp |
| 1935 Residence (County) | Orangeburg |
| Occupation | labor |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 888 |
| Highest Grade | No 6 |
| 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 John Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mack (~0.92 confidence) and mother Caroline Mack (~0.92 confidence) and father Jacob Mack (~0.92 confidence) and mother Hattie Mack (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mack
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Caroline Mack
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Jacob Mack
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Hattie Mack
b. ~1900
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mack
Son · 1940 · age 20 · b. ~1920 · South Carolina
★ You are viewing this record
Sibling
Jacob Mack
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Mack
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mack
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Moses Mack
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mack
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Texas Mack
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Mack
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mack
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Mack
Sibling · 1940 · age 12
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 — Orangeburg-County, South Carolina
Open full size
1940 US Federal Census — Orangeburg-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03830-00184)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Colman Jr Jones | 8 | Son | — | South Carolina |
| 2 | Author Jones | 4 | Son | — | South Carolina |
| 3 | Hampton Cullen | 64 | Head | Farmer | South Carolina |
| 4 | Marie Cullen | 61 | Wife | None | South Carolina |
| 5 | Hodges Cullen | 22 | Son | Farmer | South Carolina |
| 6 | Clyde Cullen | 17 | Son | None | South Carolina |
| 7 | Carl Cullen | 17 | Son | None | South Carolina |
| 8 | Hampton Jr Cullen | 24 | Son | Farmer | South Carolina |
| 9 | Helen Cullen | 18 | Daughter-in-law | None | South Carolina |
| 10 | Hervey Felder | 46 | Head | Farmer | South Carolina |
| 11 | Rachell Felder | 42 | Wife | None | South Carolina |
| 12 | Marion Felder | 17 | Son | Farm Labour | South Carolina |
| 13 | Devant Johnson | 45 | Head | Farmer | South Carolina |
| 14 | Licia Johnson | 40 | Wife | None | South Carolina |
| 15 | Mary Johnson | 21 | Daughter | Cook | South Carolina |
| 16 | James Johnson | 19 | Son | Farm Labor | South Carolina |
| 17 | John Johnson | 16 | Son | Farm Labor | South Carolina |
| 18 | Nepolian Johnson | 13 | Son | — | South Carolina |
| 19 | Lehola Johnson | 11 | Daughter | — | South Carolina |
| 20 | Devant Jr Johnson | 7 | Son | — | South Carolina |
| 21 | Sam Johnson | 4 | Son | — | South Carolina |
| 22 | Jacob Mack | 48 | Head | Farmer | South Carolina |
| 23 | Hattie Mack | 40 | Wife | None | South Carolina |
| 24 | John Mack THIS PERSON | 20 | Son | Labor | South Carolina |
| 25 | Mary Mack | 18 | Daughter | None | South Carolina |
| 26 | Texas Mack | 17 | Daughter | Farm Labor | South Carolina |
| 27 | Alice Mack | 13 | Daughter | — | South Carolina |
| 28 | Sarah Mack | 12 | Daughter | — | South Carolina |
| 29 | Jacob Jr Mack | 10 | Son | — | South Carolina |
| 30 | Moses Mack | 8 | Son | — | South Carolina |
| 31 | James Mack | 4 | Son | — | South Carolina |
| 32 | Willie Mack | 3 | Son | — | South Carolina |
| 33 | David Mack | 2 | Son | — | South Carolina |
| 34 | Sam Williams | 57 | Head | Farmer | South Carolina |
| 35 | Lilla Williams | 34 | Wife | None | South Carolina |
| 36 | John Williams | 20 | Son | Farm Labor | South Carolina |
| 37 | Edgar Williams | 17 | Son | Farm Labor | South Carolina |
| 38 | Sam Williams | 12 | Son | — | South Carolina |
| 39 | Sarah Williams | 10 | Daughter | — | South Carolina |
| 40 | Tom Williams | 8 | Son | — | South Carolina |
Related Census Records
Pedigree Summary
John + 9 siblings
Gen 1 · 4 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)