ST
Sarah Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mclean-County, Illinois
Our Model Tree links this Sarah Thomas across the 1920, 1930 and 1940 US Censuses in Mclean-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 3-person household.
Age 70
b. ~1870
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, Illinois |
| Surname | Thomas |
| Given Name | Sarah |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Ill |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Heyworth Village |
| Est. Birth Year | ~1870 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Sarah | Age | Birth yr |
|---|---|---|---|---|
| Mable Armstrong | Daughter | — | 29 | ~1911 |
| Sarah Thomas | Head | — | 70 | ~1870 |
| Litha Armstrong | Son | — | 28 | ~1912 |
Census Appearances
1920
Mclean, Illinois
Spouse, age 49
Mclean, Illinois · implied b. ~1871 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Sarah |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mclean, Illinois
Head, age 60
Mclean, Illinois · implied b. ~1870
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Thomas |
| Given Name | Sarah |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Age at First Marriage | 15 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mclean-County, Illinois
Head, age 70
Mclean-County, Illinois · implied b. ~1870 — 3 household members
| Surname | Thomas |
| Given Name | Sarah |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | McLean |
| Highest Grade | No 7 |
| 1935 Residence | Ill |
| 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 Sarah Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Sarah Thomas
Head · 1940 · age 70 · b. ~1870 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mclean-County, Illinois
Open full size
1940 US Federal Census — Mclean-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00842-00865)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kenneth Mathews | 27 | Head | Farmer | Illinois |
| 2 | Marjorie Mathews | 23 | Wife | — | Illinois |
| 3 | Dorothy Mathews | 1 | Daughter | — | Illinois |
| 4 | Pat Mcshane | 54 | Lodger | Beauty Operator | Illinois |
| 5 | Lura Beall | 70 | Head | House Work | Illinois |
| 6 | Wayne Beall | 27 | Son | Laborer | Illinois |
| 7 | Marilyn Beall | 26 | Daughter | Farmer | Illinois |
| 8 | Gladys Jensen | 46 | Daughter | — | Illinois |
| 9 | Elmer Jensen | 17 | Grandson | Teacher | California |
| 10 | Emma Helfety | 74 | Head | — | Illinois |
| 11 | Amos Helfety | 47 | Brother | Farmer | Illinois |
| 12 | Prentice Helfety | 44 | Daughter | — | Illinois |
| 13 | Abram Emery | 49 | Head | Farmer | Illinois |
| 14 | Pearl Emery | 51 | Wife | — | Illinois |
| 15 | Wendell Emery | 20 | Son | Laborer | Illinois |
| 16 | Maurine Emery | 19 | Daughter | — | Illinois |
| 17 | Sarah Thomas THIS PERSON | 70 | Head | — | Illinois |
| 18 | Mable Armstrong | 29 | Daughter | Laborer | Iowa |
| 19 | Litha Armstrong | 28 | Son | Farmer | Tennessee |
| 20 | Sam Van Horn | 49 | Head | Operator | Illinois |
| 21 | Carrie Van Horn | 32 | Wife | — | W. Virginia |
| 22 | Reece Delmar Van Horn | 16 | Son | — | Illinois |
| 23 | Loyd Wakefield | 36 | Head | Postmaster | Illinois |
| 24 | Alberta Wakefield | 36 | Wife | — | Illinois |
| 25 | Robert Maurice Wakefield | 5 | Son | — | Illinois |
| 26 | Patricia Ann Wakefield | 2 | Daughter | — | Illinois |
| 27 | Sharon Lynn Wakefield | 1 | Daughter | — | Illinois |
| 28 | Lester Erdman | 32 | Head | Machinist | Illinois |
| 29 | Louise D. Erdman | 32 | Wife | — | Illinois |
| 30 | Patricia Erdman | 1 | Daughter | — | Illinois |
| 31 | Charles Kearney | 30 | Lodger | Utility | Missouri |
| 32 | Edgar Thies | 38 | Head | Relief Engineer | Illinois |
| 33 | Velma Thies | 40 | Wife | — | Nebraska |
| 34 | Viola Thies | 16 | Daughter | — | Nebraska |
| 35 | Doris Thies | 10 | Daughter | — | Illinois |
| 36 | Linda Lou Thies | 3 | Daughter | — | Illinois |
| 37 | Helen Wendorff | 89 | Head | — | Ohio |
| 38 | Orrin Phillips | 41 | Head | Engineer | Illinois |
| 39 | Grace Phillips | 31 | Wife | — | Illinois |
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)