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Hazel Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Hazel Nelson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 9-person household.
Age 26
b. ~1914
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Hazel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Hazel | Age | Birth yr |
|---|---|---|---|---|
| William Nelson | Son | — | 13 | ~1927 |
| Albert Nelson | Head | — | 59 | ~1881 |
| Margie Nelson | Daughter | — | 20 | ~1920 |
| John Nelson | Son | — | 24 | ~1916 |
| Hazel Nelson | Daughter | — | 26 | ~1914 |
| Mary Nelson | Spouse | — | 57 | ~1883 |
| George Nelson | Son | — | 16 | ~1924 |
| Archie Nelson | Son | — | 22 | ~1918 |
| Mary Nelson | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Cook, Illinois
Daughter, age 14
Cook, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Hazel |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 26
Cook-County, Illinois · implied b. ~1914 — 9 household members
| Surname | Nelson |
| Given Name | Hazel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Hazel Nelson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Hazel Nelson
Daughter · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
George Nelson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Archie Nelson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margie Nelson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nelson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Nelson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Nelson
Sibling · 1940 · age 13
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
31 people indexed on this census page (nara:1940:m-t0627-00957-00082)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Blaney | 49 | Lodger | — | Eire |
| 42 | John Koehler | 58 | Lodger | — | Illinois |
| 43 | Joseph Chesley | 45 | Lodger | — | Illinois |
| 44 | Ray Dickson | 58 | Head | Porter | Illinois |
| 45 | Lucile Dickson | 54 | Wife | — | England |
| 46 | Maurice Dickson | 20 | Son | Laborer | California |
| 47 | Mary Dickson | 79 | Mother | — | Illinois |
| 48 | George Gorman | 20 | Lodger | Handler | North Carolina |
| 49 | Catherine Johnston | 48 | Head | — | Illinois |
| 50 | Leo Johnston | 46 | Brother | Electrician | Illinois |
| 51 | John Johnston | 44 | Brother | Clerk | Illinois |
| 52 | Edward Johnston | 14 | Nephew | — | North Carolina |
| 53 | Charles Johnston | 12 | Nephew | — | North Carolina |
| 54 | Betty De Moss | 23 | Niece | File Clerk | Illinois |
| 55 | Albert E. Nelson | 59 | Head | Locomotive Engineer | Illinois |
| 56 | Mary Nelson | 57 | Wife | — | Illinois |
| 57 | Hazel Nelson THIS PERSON | 26 | Daughter | — | Illinois |
| 58 | John Nelson | 24 | Son | Truck Driver | Illinois |
| 59 | Archie Nelson | 22 | Son | New Worker | Illinois |
| 60 | Margie Nelson | 20 | Daughter | — | Illinois |
| 61 | Mary Jane Nelson | 19 | Daughter | — | Illinois |
| 62 | George Nelson | 16 | Son | — | Illinois |
| 63 | William Nelson | 13 | Son | — | Illinois |
| 64 | John Fairlamb | 65 | Head | Bill Poster | Virginia |
| 65 | Mae Fairlamb | 58 | Wife | — | Illinois |
| 66 | Francis Fairlamb | 22 | Son | Laborer | Illinois |
| 67 | William Johnston | 64 | Head | Shoe Cutter | New York |
| 68 | Ida Johnston | 63 | Wife | — | Kentucky |
| 69 | Charles Kuhnemund | 73 | Head | Tailoring | Germany |
| 70 | Mathilda Kuhnemund | 70 | Wife | — | Germany |
| 71 | Esther Kuhnemund | 40 | Daughter | Secretary | 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)