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Margaret Hayes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Hayes across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 11-person household.
Age 17
b. ~1923
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1923 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| George Coates | Other | — | 20 | ~1920 |
| Katherine Hayes | Spouse | — | 51 | ~1889 |
| John Hayes | Son | — | 12 | ~1928 |
| William Hayes | Head | — | 55 | ~1885 |
| George Coates | Other | — | 46 | ~1894 |
| J Hayes | Daughter | — | 25 | ~1915 |
| Edward Hayes | Son | — | 10 | ~1930 |
| J Barry | Other | — | 13 | ~1927 |
| Margaret Hayes | Daughter | — | 17 | ~1923 |
| Robert Hayes | Son | — | 21 | ~1919 |
| Mary Hayes | Daughter | — | 31 | ~1909 |
Census Appearances
1930
Cook, Illinois
Daughter, age 7
Cook, Illinois · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| 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 17
Cook-County, Illinois · implied b. ~1923 — 11 household members
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| 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 Margaret Hayes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Hayes
Daughter · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
J Hayes
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hayes
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Hayes
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Hayes
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hayes
Sibling · 1940 · age 12
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-t0627-00929-00436)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert G Anderson | 69 | head | Janitor | Sweden |
| 42 | Edla Anderson | 60 | wife | — | Sweden |
| 43 | Miriam G Spannuth | 25 | dau | son | Chemist | Indiana |
| 44 | Elvira Spannuth | 28 | daughter | Stenographer | Illinois |
| 45 | Edwin Spannuth | 24 | son | Repairman | Illinois |
| 46 | John Anderson | 32 | lodger | Porter | Sweden |
| 47 | Josephine Gosselin | 75 | head | — | Michigan |
| 48 | Robert Gosselin | 46 | son | Buyer | Illinois |
| 49 | Ruth Anne Gosselin | 34 | daughter | General Office | Illinois |
| 50 | Augustus Lahuplatt | Lahuplett | 38 | head | Ironworker | Illinois |
| 51 | Mable Lahuplatt | Lahuplett | 39 | wife | Comptometer Operator | Illinois |
| 52 | Maude Lahuplatt | Lahuplett | 10 | daughter | — | Illinois |
| 53 | Grady W Roy | 38 | head | Painter Decorator | Texas |
| 54 | Jessie Roy | 37 | wife | — | England |
| 55 | Grady W Jr Roy | 9 | son | — | Illinois |
| 56 | Philip Roy | 6 | son | — | Illinois |
| 57 | Raymond Roy | 4 | son | — | Illinois |
| 58 | Dale Roy | 2 | son | — | Illinois |
| 59 | Herbert Roy | 19 | nephew | Painter | Illinois |
| 60 | William Hayes | 55 | head | Accountant | Illinois |
| 61 | Katherine Hayes | 51 | wife | — | Illinois |
| 62 | Mary C Hayes | 31 | daughter | Telephone Operator | Illinois |
| 63 | J. B. Hayes | 25 | daughter | Telephone Operator | Illinois |
| 64 | Robert Hayes | 21 | son | Bellboy | Illinois |
| 65 | Margaret Hayes THIS PERSON | 17 | daughter | — | Illinois |
| 66 | John Hayes | 12 | son | — | Illinois |
| 67 | Edward Hayes | 10 | son | — | Illinois |
| 68 | George Coates | 46 | lodger | Cabdriver | Illinois |
| 69 | George Jr Coates | 20 | lodger | Construction | Illinois |
| 70 | J. Francis Barry | 13 | grandson | — | New York |
| 71 | Lula M Gidley | 67 | head | — | Iowa |
| 72 | Eva Short | 17 | granddaughter | — | Illinois |
| 73 | Lois Short | 15 | granddaughter | — | Illinois |
| 74 | Joseph Short | 10 | grandson | — | Illinois |
| 75 | Howard Maloy | 34 | head | Contractor | Missouri |
| 76 | Frank O'Kane | 23 | head | Pickling Room | Nebraska |
| 77 | Alida O'Kane | 26 | wife | — | Oklahoma |
| 78 | Enoch Tyron | 46 | head | Lamplighter | Sweden |
| 79 | Irene Tyron | 44 | wife | — | Canada Eng |
| 80 | Enoch Jr Tyron | 14 | son | — | 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)