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Isaac Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Mississippi
Our Model Tree links this Isaac Jackson across the 1920, 1930 and 1940 US Censuses in Madison-County, Mississippi (XGBoost, ~Confirmed), with identified parents Lee & Sylvester — first a son (b.~1919), then head of a 18-person household.
Age 21
b. ~1919
Male
Son
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Mississippi |
| Surname | Jackson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 3 |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | S 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Laborer |
| Township / Ward | Beat 3 |
| 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.
18 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Isaac Jackson | Son | — | 21 | ~1919 |
| Ruby Jackson | Son | — | 11 | ~1929 |
| Louis Jackson | Son | — | 3 | ~1937 |
| Dorothy Jackson | Daughter | — | 5 | ~1935 |
| Lizzie Jackson | Daughter | — | 8 | ~1932 |
| Jimmie Jackson | Son | — | 14 | ~1926 |
| Lottie Jackson | Daughter | — | 6 | ~1934 |
| Ellis Jackson | Son | — | 2 | ~1938 |
| Harry Jackson | Son | — | 19 | ~1921 |
| Levi Jackson | Son | — | 13 | ~1927 |
| Lee Jackson | Son | — | 7 | ~1933 |
| Sylvester Jackson | Head | — | 45 | ~1895 |
| Sylvester Jackson | Son | — | 10 | ~1930 |
| Tommie Jackson | Son | — | ~1940 | |
| Lucil Jackson | Daughter | — | 16 | ~1924 |
| Ara Jackson | Spouse | — | 42 | ~1898 |
| Edward Jackson | Son | — | 17 | ~1923 |
| Mary Jackson | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Madison, Mississippi
Son, age 3
Madison, Mississippi · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Madison, Mississippi
Son, age 11
Madison, Mississippi · implied b. ~1919 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Madison-County, Mississippi
Son, age 21
Madison-County, Mississippi · implied b. ~1919 — 18 household members
| Surname | Jackson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 3 |
| 1935 Residence (County) | Madison |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 250 |
| Highest Grade | S 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Isaac Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lee Jackson (~0.92 confidence) and father Sylvester Jackson (~0.92 confidence) and mother Ara Jackson (~0.92 confidence) and mother Lou Jackson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lee Jackson
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Sylvester Jackson
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Ara Jackson
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Lou Jackson
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Jackson
Son · 1940 · age 21 · b. ~1919 · Mississippi
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Sibling
Lottie Jackson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucil Jackson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Jackson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lizzie Jackson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jimmie Jackson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Jackson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellis Jackson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lee Jackson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Jackson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Jackson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvester Jackson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Levi Jackson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Jackson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jackson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tommie Jackson
Sibling · 1940 · age
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 — Madison-County, Mississippi
Open full size
1940 US Federal Census — Madison-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02047-00602)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clertha Young | 14 | Head | — | Mississippi |
| 42 | Lula Mae Young | 10 | Daughter | — | Mississippi |
| 43 | Minie Young | 7 | Daughter | — | Mississippi |
| 44 | Fannie Young | 9 | Daughter | — | Mississippi |
| 45 | Yolony Billbrew | 20 | Daughter | — | Mississippi |
| 46 | Sylvester Jackson | 45 | Head | Farmer | Mississippi |
| 47 | Ara Bertha Jackson | 42 | Wife | — | Mississippi |
| 48 | Isaac Jackson THIS PERSON | 21 | Son | Laborer | Mississippi |
| 49 | Harry Jackson | 19 | Son | Laborer | Mississippi |
| 50 | Edward Jackson | 17 | Son | Laborer | Mississippi |
| 51 | Lucil Jackson | 16 | Daughter | — | Mississippi |
| 52 | Jimmie Jackson | 14 | Son | — | Mississippi |
| 53 | Levi Jackson | 13 | Son | — | Mississippi |
| 54 | Ruby Jackson | 11 | Son | — | Mississippi |
| 55 | Sylvester Jackson | 10 | Son | — | Mississippi |
| 56 | Mary Lee Jackson | 9 | Daughter | — | Mississippi |
| 57 | Lizzie B. Jackson | 8 | Daughter | — | Mississippi |
| 58 | Lee Otis Jackson | 7 | Son | — | Mississippi |
| 59 | Lottie Jackson | 6 | Daughter | — | Mississippi |
| 60 | Dorothy Lee Jackson | 5 | Daughter | — | Mississippi |
| 61 | Louis C. Jackson | 3 | Son | — | Mississippi |
| 62 | Ellis Jackson | 2 | Son | — | Mississippi |
| 63 | Tommie Jackson | 0 | Son | — | Mississippi |
| 64 | Lawrence Fields | 52 | Head | Farmer | Mississippi |
| 65 | Jenna Fields | 38 | Wife | — | Mississippi |
| 66 | Nora Walker | 32 | Head | Farmer | Mississippi |
| 67 | Marion Cherry | 72 | Mother in law | — | Mississippi |
| 68 | Shuck Tucker | 44 | Head | Farmer | Mississippi |
| 69 | Ernestine Tucker | 33 | Wife | — | Mississippi |
| 70 | Willie Curtis Tucker | 12 | Son | — | Mississippi |
| 71 | Fuzz Tucker | 5 | Son | — | Mississippi |
| 72 | Frank Davis | 40 | Head | Farmer | Mississippi |
| 73 | Mamie Davis | 37 | Wife | — | Mississippi |
| 74 | Alice Davis | 6 | Daughter | — | Mississippi |
| 75 | Little Sister Davis | 5 | Daughter | — | Mississippi |
| 76 | Emma Davis | 60 | Mother | — | Mississippi |
| 77 | I. Cy Williams | 30 | Head | Farmer | Mississippi |
| 78 | Annie Williams | 28 | Wife | — | Mississippi |
| 79 | Jerry Williams | 8 | Son | — | Mississippi |
| 80 | Mary Lee Williams | 5 | Daughter | — | Mississippi |
Related Census Records
Pedigree Summary
Isaac + 15 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)