TJ
Thelma Jackson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Thelma Jackson across the 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Jackson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Industry | No |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Fannie Jackson | Head | — | 41 | ~1899 |
| William Jackson | Son | — | 7 | ~1933 |
| Farris Jackson | Son | — | 17 | ~1923 |
| Barbara Jackson | Daughter | — | 5 | ~1935 |
| Mary Jackson | Spouse | — | 38 | ~1902 |
| Thelma Jackson | Daughter | — | 14 | ~1926 |
| Willie Jackson | Daughter | — | 19 | ~1921 |
| Deloris Jackson | Son | — | 12 | ~1928 |
| Almar Jackson | Daughter | — | 10 | ~1930 |
Census Appearances
1930
St Clair, …
Daughter, age 5
St Clair, Illinois · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Daughter, age 14
St.-Clair-County, Illinois · implied b. ~1926 — 9 household members
| Surname | Jackson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Industry | No |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Thelma Jackson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thelma Jackson
Daughter · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Farris Jackson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Jackson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Deloris Jackson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Almar Jackson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Jackson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Jackson
Sibling · 1940 · age 5
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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00880-00956)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roland Drake | 50 | Lodger | Laborer | Indiana |
| 42 | Nathaniel Thomas | 44 | Head | Rammer | Louisiana |
| 43 | Rosa Thomas | 42 | Wife | — | Louisiana |
| 44 | Elijah Tate | 28 | Son in law | Laborer | Louisiana |
| 45 | Ethelynn Tate | 22 | Daughter | — | Louisiana |
| 46 | John Gillespie | 8 | Stepchild | — | Illinois |
| 47 | Fannie S. Jackson | 41 | Head | Laborer | Tennessee |
| 48 | Mary Jackson | 38 | Wife | — | Tennessee |
| 49 | Willie Mae Jackson | 19 | Daughter | New Worker | Tennessee |
| 50 | Farris Jr. Jackson | 17 | Son | Porter | Tennessee |
| 51 | Thelma Jackson THIS PERSON | 14 | Daughter | — | Illinois |
| 52 | Deloris Jackson | 12 | Son | — | Illinois |
| 53 | Almar Jean Jackson | 10 | Daughter | — | Illinois |
| 54 | William Jackson | 7 | Son | — | Illinois |
| 55 | Barbara Jackson | 5 | Daughter | — | Illinois |
| 56 | Agurtha Jefferson | 34 | Head | Laundress | Mississippi |
| 57 | Bertha Walls | 28 | Sister | House Work | Mississippi |
| 58 | Daisy Clifford | 13 | Niece | — | Mississippi |
| 59 | Durdin Stafford | 11 | Cousin | — | Mississippi |
| 60 | Mattie Johnson | 40 | Head | Sewing | Arkansas |
| 61 | Hugh Johnson | 25 | Brother | — | Arkansas |
| 62 | David Allison | 30 | Lodger | Porter | Illinois |
| 63 | Clemence Brown | 52 | Head | — | Mississippi |
| 64 | Arthur Richards | 12 | Grandchild | — | Illinois |
| 65 | William Earl | 21 | Nephew | — | Illinois |
| 66 | Thomas Coats | 30 | Lodger | Jobber | Alabama |
| 67 | Floyd Hess | 30 | Head | Laborer | Illinois |
| 68 | Moses Mosly | 31 | Head | Laborer | Illinois |
| 69 | Mattie Mosly | 28 | Wife | — | Illinois |
| 70 | Edward Johnson | 63 | Head | Teamster | Missouri |
| 71 | Lillie D. Johnson | 51 | Wife | — | Illinois |
| 72 | Jesse Wilson | 58 | Head | Teamster | Tennessee |
| 73 | Edna Taylor | 25 | Head | Owner | Illinois |
| 74 | Sopher Merchant | 25 | Boarder | Cook | Illinois |
| 75 | Thelma O'Neil | 20 | Roomer | Waitress | Illinois |
| 76 | Emma Smith | 41 | Head | Sewing | Honolulu |
| 77 | Jesse Berryman | 48 | Head | Laborer | Illinois |
| 78 | James Borcher | 32 | Head | Laborer | Mississippi |
| 79 | Edna Borcher | 32 | Wife | — | Mississippi |
| 80 | Mae Phills | 13 | Daughter | — | Mississippi |
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)