MH
Mary Hendricks — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Clair, Illinois
Our Model Tree links this Mary Hendricks across the 1920 and 1930 US Censuses in St Clair, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 14-person household.
Age 18
b. ~1912
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Clair, Illinois |
| Surname | Hendricks |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1912 |
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.
14 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Hendricks | Son | — | 21 | ~1909 |
| Margaret Hendricks | Daughter | — | ~1930 | |
| James Hendricks | Son | — | 28 | ~1902 |
| Joseph Hendricks | Son | — | 15 | ~1915 |
| William Hendricks | Son | — | 22 | ~1908 |
| Catherine Hendricks | Daughter | — | 12 | ~1918 |
| Edward Hendricks | Son | — | 6 | ~1924 |
| Francis Hendricks | Son | — | 10 | ~1920 |
| Mary Hendricks | Daughter | — | 18 | ~1912 |
| Alice Hendricks | Daughter | — | 4 | ~1926 |
| James Hendricks | Head | — | 55 | ~1875 |
| Theresa Hendricks | Daughter | — | 2 | ~1928 |
| Mary Hendricks | Spouse | — | 53 | ~1877 |
| Robert Hendricks | Son | — | 8 | ~1922 |
Census Appearances
1920
St Clair, …
Daughter, age 8
St Clair, Illinois · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hendricks |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Daughter, age 18
St Clair, Illinois · implied b. ~1912 — 14 household members
| Surname | Hendricks |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| 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 |
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 Hendricks across 2 US Census years (1920 and 1930) in St Clair, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hendricks
Daughter · 1930 · age 18 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Margaret Hendricks
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Hendricks
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Hendricks
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hendricks
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hendricks
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Hendricks
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Hendricks
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hendricks
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Hendricks
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Hendricks
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Hendricks
Sibling · 1930 · age 8
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
1930 US Federal Census — St Clair, Illinois
Open full size
1930 US Federal Census — St Clair, Illinois
Page Contents
48 people indexed on this census page (ia:1930:illinoiscensus00reel566:0727)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 53 | James E Bude | 71 | Head | — | Illinois |
| 54 | Mary Bude | 73 | Wife | — | Ireland |
| 55 | James Bude | 45 | Son | — | Illinois |
| 56 | John Bude | 43 | Son | — | Illinois |
| 57 | Mary Bude | 38 | Daughter | — | Illinois |
| 58 | William Bude | 34 | Son | — | Illinois |
| 59 | James Hendricks | 53 | Head | — | Illinois |
| 60 | Annie Hendricks | 51 | Wife | — | Illinois |
| 61 | James Hendricks | 30 | Son | Civil Engineer | Illinois |
| 62 | Alice Hendricks | 27 | Daughter-in-law | — | Illinois |
| 63 | James Hendricks | 5 | Grandson | — | Illinois |
| 64 | Raymond Hendricks | 3 | Grandson | — | Illinois |
| 65 | Alice Hendricks | 1 | Granddaughter | — | Illinois |
| 66 | Robert Hendricks | 21 | Son | — | Illinois |
| 67 | William Hendricks | 18 | Son | — | Illinois |
| 68 | John Hendricks | 16 | Son | — | Illinois |
| 69 | Edward Hendricks | 14 | Son | — | Illinois |
| 70 | Richard Hendricks | 12 | Son | — | Illinois |
| 71 | Mary Hendricks | 10 | Daughter | — | Illinois |
| 72 | Catherine Hendricks | 8 | Daughter | — | Illinois |
| 73 | Joseph Hendricks | 6 | Son | — | Illinois |
| 74 | Francis Hendricks | 4 | Son | — | Illinois |
| 75 | Theresa Hendricks | 2 | Daughter | — | Illinois |
| 76 | Margaret Hendricks | 0 | Daughter | — | Illinois |
| 77 | James Hendricks | 55 | Head | — | Illinois |
| 78 | Mary Hendricks | 53 | Wife | — | Illinois |
| 79 | James Hendricks | 28 | Son | — | Illinois |
| 80 | William Hendricks | 22 | Son | — | Illinois |
| 81 | John Hendricks | 21 | Son | — | Illinois |
| 82 | Mary Hendricks THIS PERSON | 18 | Daughter | — | Illinois |
| 83 | Joseph Hendricks | 15 | Son | — | Illinois |
| 84 | Catherine Hendricks | 12 | Daughter | — | Illinois |
| 85 | Francis Hendricks | 10 | Son | — | Illinois |
| 86 | Robert Hendricks | 8 | Son | — | Illinois |
| 87 | Edward Hendricks | 6 | Son | — | Illinois |
| 88 | Alice Hendricks | 4 | Daughter | — | Illinois |
| 89 | Theresa Hendricks | 2 | Daughter | — | Illinois |
| 90 | Margaret Hendricks | 0 | Daughter | — | Illinois |
| 91 | James Hendricks | 37 | Head | — | Illinois |
| 92 | Mary Hendricks | 34 | Wife | — | Illinois |
| 93 | James Hendricks | 7 | Son | — | Illinois |
| 94 | William Hendricks | 5 | Son | — | Illinois |
| 95 | Mary Hendricks | 3 | Daughter | — | Illinois |
| 96 | John Hendricks | 1 | Son | — | Illinois |
| 97 | Alice Hendricks | 0 | Daughter | — | Illinois |
| 98 | Robert Hendricks | 0 | Son | — | Illinois |
| 99 | Edward Hendricks | 0 | Son | — | Illinois |
| 100 | Catherine Hendricks | 0 | Daughter | — | Illinois |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)