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Helen Hamilton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Iroquois-County, Illinois
Our Model Tree links this Helen Hamilton across the 1930 and 1940 US Censuses in Iroquois-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Iroquois-County, Illinois |
| Surname | Hamilton |
| Given Name | Helen M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Watseka City |
| 1935 Residence (County) | Iroquois |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Watseka City |
| Est. Birth Year | ~1930 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Mary Hamilton | Daughter | — | 12 | ~1928 |
| Barbara Hamilton | Daughter | — | 3 | ~1937 |
| Helen Hamilton | Daughter | — | 10 | ~1930 |
| Donald Hamilton | Son | — | ~1940 | |
| Glen Hamilton | Head | — | 33 | ~1907 |
| Ires Hamilton | Spouse | — | 30 | ~1910 |
| Glen Hamilton | Son | — | 8 | ~1932 |
| Kenneth Hamilton | Son | — | 7 | ~1933 |
Census Appearances
1930
Iroquois, Illinois
Daughter, age
Iroquois, Illinois · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Helen M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Oregon |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Iroquois-County, Illinois
Daughter, age 10
Iroquois-County, Illinois · implied b. ~1930 — 8 household members
| Surname | Hamilton |
| Given Name | Helen M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Watseka City |
| 1935 Residence (County) | Iroquois |
| Highest Grade | No 4 |
| 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 Helen Hamilton across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Hamilton
Daughter · 1940 · age 10 · b. ~1930 · Illinois
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Sibling
Glen Hamilton
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Hamilton
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Hamilton
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hamilton
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Hamilton
Sibling · 1940 · age
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 — Iroquois-County, Illinois
Open full size
1940 US Federal Census — Iroquois-County, Illinois
Page Contents
25 people indexed on this census page (nara:1940:m-t0627-00813-00224)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alvin A Atwood | 32 | Head | Labor | Illinois |
| 42 | Thelma M Atwood | 27 | Wife | — | Illinois |
| 43 | Deloris R Atwood | 8 | Daughter | — | Illinois |
| 44 | Joyce C Atwood | 6 | Daughter | — | Illinois |
| 45 | Margaret L Atwood | 5 | Daughter | — | Illinois |
| 46 | Judith E Atwood | 2 | Daughter | — | Illinois |
| 47 | Ray Herron | 29 | Head | Salesman | Indiana |
| 48 | Virginia M Herron | 22 | Wife | — | Illinois |
| 49 | Donna J Herron | 1 | Daughter | — | Illinois |
| 50 | Earl R Potter | 44 | Head | Electrician | Indiana |
| 51 | Erma S Potter | 42 | Wife | — | South Dakota |
| 52 | Earl W Potter | 15 | Son | — | South Dakota |
| 53 | Eugene H Potter | 14 | Son | — | South Dakota |
| 54 | Dale R Potter | 10 | Son | — | South Dakota |
| 55 | Dorothy J Potter | 5 | Daughter | — | Illinois |
| 56 | Glen Hamilton | 33 | Head | Mechanic | Illinois |
| 57 | Ires A Hamilton | 30 | Wife | — | Oregon |
| 58 | Mary J Hamilton | 12 | Daughter | — | Illinois |
| 59 | Helen M Hamilton THIS PERSON | 10 | Daughter | — | Illinois |
| 60 | Glen C Hamilton | 8 | Son | — | Illinois |
| 61 | Kenneth A Hamilton | 7 | Son | — | Illinois |
| 62 | Barbara L Hamilton | 3 | Daughter | — | Illinois |
| 63 | Donald L Hamilton | 0 | Son | — | Illinois |
| 64 | Ione Richardson | 74 | Head | Practical Nurse | Illinois |
| 65 | Effie S Richardson | 54 | Daughter | Maid | 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)