MC
Mary Carey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Carey across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Carey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | River Forest |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | River Forest |
| Est. Birth Year | ~1915 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carey | Daughter | — | 25 | ~1915 |
| Helen Carey | Daughter | — | 31 | ~1909 |
| Angela Carey | Daughter | — | 14 | ~1926 |
| Richard Carey | Head | — | 57 | ~1883 |
| Harriet Barrett | Other | — | 83 | ~1857 |
| John Carey | Son | — | 11 | ~1929 |
| Richard Carey | Son | — | 20 | ~1920 |
| Helen Carey | Spouse | — | 57 | ~1883 |
Census Appearances
1930
Cook, Illinois
Daughter, age 14
Cook, Illinois · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cary |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 25
Cook-County, Illinois · implied b. ~1915 — 8 household members
| Surname | Carey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | River Forest |
| 1935 Residence (County) | Cook |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Mary Carey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carey
Daughter · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
John Carey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Carey
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angela Carey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Carey
Sibling · 1940 · age 20
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00788-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Barrett | 8 | son | — | Illinois |
| 42 | Margaret Barrett | 5 | daughter | — | Illinois |
| 43 | Anthony Barrett | 3 | son | — | Illinois |
| 44 | Max B. Cullen | 37 | head | Lecturer - Demonstrator | Illinois |
| 45 | Margaret Q. Cullen | 34 | wife | — | Illinois |
| 46 | Patricia Cullen | 7 | daughter | — | Illinois |
| 47 | Susan Cullen | 2 | daughter | — | Illinois |
| 48 | Richard E. Carey | 57 | head | — | Illinois |
| 49 | Helen A. Carey | 57 | wife | — | Illinois |
| 50 | Helen D. Carey | 31 | daughter | Teacher | Illinois |
| 51 | Mary Carey THIS PERSON | 25 | daughter | — | Illinois |
| 52 | Richard Carey | 20 | son | — | Illinois |
| 53 | Angela Carey | 14 | daughter | — | Illinois |
| 54 | John Carey | 11 | son | — | Illinois |
| 55 | Harriet Barrett | 83 | mother-in-law | — | Illinois |
| 56 | C. Jay Taylor | 41 | head | Accountant | Ohio |
| 57 | Ethel D. Taylor | 41 | wife | — | Illinois |
| 58 | Jay E. Taylor | 17 | son | — | Illinois |
| 59 | Thomas E. Mcbride | 65 | head | Attorney | Illinois |
| 60 | Minnie C. Mcbride | 64 | wife | Teacher-Art | Illinois |
| 61 | Marguerita E. Mcbride | 31 | daughter | — | Illinois |
| 62 | Richard G. Mcbride | 30 | son | Clerical | Illinois |
| 63 | Arthur J. Fitzgerald | 33 | son-in-law | Teacher | Illinois |
| 64 | Helen Fitzgerald | 33 | daughter | Teacher | Illinois |
| 65 | Sally J. Fitzgerald | 6 | granddaughter | — | Illinois |
| 66 | Clarence J. Sauer | 46 | head | Dentist | Illinois |
| 67 | Lillian Sauer | 37 | wife | — | Illinois |
| 68 | Clarence J. Jr. Sauer | 19 | son | — | Illinois |
| 69 | Leatrice Mae Sauer | 10 | daughter | — | Illinois |
| 70 | Sadie M. Porter | 38 | head | Saleslady | Illinois |
| 71 | Barbara Porter | 17 | daughter | — | Illinois |
| 72 | Ralph G. Porter | 13 | son | — | Illinois |
| 73 | Charles H. Porter | 78 | father-in-law | — | Illinois |
| 74 | Emily W. Porter | 74 | mother-in-law | — | Rhode Island |
| 75 | Curtis S. Mceachran | 37 | head | Credit Supervisor | Illinois |
| 76 | Dorothy Q. Mceachran | 33 | wife | — | Illinois |
| 77 | Daniel C. Mceachran | 8 | son | — | Illinois |
| 78 | Martha W. Mceachran | 3 | daughter | — | Illinois |
| 79 | Mary Taggert | 21 | servant | Maid | Alabama |
| 80 | Norman H. Mcclercy | 52 | head | Manager | 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)