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Mary Mills — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Mary Mills across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 2-person household.
Age 70
b. ~1870
Female
Head
Born: Pennsylvania
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Mills |
| Given Name | Mary R. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Decatur |
| 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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ada Walton | Daughter | — | 63 | ~1877 |
| Mary Mills | Head | — | 70 | ~1870 |
Census Appearances
1920
Macon, Illinois
Head, age 50
Macon, Illinois · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mills |
| Given Name | Mary R. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Occupation | Bookkeeper |
| Industry | RR YMCA Dist Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Macon, Illinois
Head, age 60
Macon, Illinois · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mills |
| Given Name | Mary R. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Book-keeper |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Macon-County, Illinois
Head, age 70
Macon-County, Illinois · implied b. ~1870 — 2 household members
| Surname | Mills |
| Given Name | Mary R. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Income (1939) | 0 |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Mary Mills across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mills
Head · 1940 · age 70 · b. ~1870 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00845-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Childs | 54 | Head | Electrician | Ohio |
| 42 | Martha Childs | 47 | Wife | Stenographer | Ohio |
| 43 | Mary R. Mills THIS PERSON | 70 | Head | — | Pennsylvania |
| 44 | Ada Walton | 63 | Daughter | — | Iowa |
| 45 | Katherine Russel | 69 | Head | — | Illinois |
| 46 | Anne Mcgowan | 33 | Daughter | Saleslady | Illinois |
| 47 | John D. Russel | 28 | Son | Welder | Illinois |
| 48 | Katherine Russel | 25 | Daughter | Bookkeeper | Illinois |
| 49 | Patrick Mcevoy | 73 | Uncle | — | Illinois |
| 51 | George C. Fader | 49 | Head | Tailor | Illinois |
| 52 | Carrie Fader | 45 | Wife | — | Illinois |
| 53 | Eloise Fader | 26 | Daughter | Receptionist | Illinois |
| 54 | William C. Fader | 22 | Son | Clerk | Illinois |
| 55 | Adolf Schmieding | 30 | Head | Laborer | Illinois |
| 56 | Louise Schmieding | 23 | Wife | — | Indiana |
| 57 | Jeanine Schmieding | 2 | Daughter | — | Illinois |
| 58 | Virgil Schmieding | 27 | Head | Laborer | Illinois |
| 59 | Florence Schmieding | 22 | Wife | — | Illinois |
| 60 | Anne R. Schmieding | 1 | Daughter | — | Illinois |
| 61 | William H. Schmieding | 23 | Head | — | Illinois |
| 62 | Minnie Schmieding | 16 | Wife | — | Illinois |
| 63 | William A. Reucking | 64 | Head | Laborer | Illinois |
| 64 | Sally Reucking | 65 | Wife | — | Illinois |
| 65 | Mary E. Klein | 69 | Head | — | Illinois |
| 66 | Henry Klein | 44 | Son | Laborer | Illinois |
| 67 | Katherine S. Powell | 77 | Head | — | Illinois |
| 68 | Robert V. Foster | 62 | Head | Clerk | Illinois |
| 69 | Nettie Foster | 52 | Wife | — | Illinois |
| 70 | Leah Foster | 33 | Daughter | Stenographer | Illinois |
| 71 | Florence Foster | 22 | Daughter | Teacher | Illinois |
| 72 | William Foster | 28 | Son | Manager | Illinois |
| 73 | Clara E. Mckinley | 83 | Head | — | Illinois |
| 74 | Cora E. Mckinley | 45 | Daughter | — | Illinois |
| 75 | John H. Mcfee | 42 | Head | Constable | Illinois |
| 76 | Wanda Mcfee | 39 | Wife | — | Illinois |
| 77 | John Jr. Mcfee | 17 | Son | — | Illinois |
| 78 | Alfred B. Ambrule | 61 | Head | Salesman | Illinois |
| 79 | Bertha Ambrule | 55 | Wife | Cook | Illinois |
| 80 | Maryane Overman | 21 | Daughter | Seamstress | 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)