MN
Mildred Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mildred Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Elmer & Mabel — first a daughter (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | cashier |
| Industry | real estate |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 900 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Cashier |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Nelson | Daughter | — | 22 | ~1918 |
| Bernette Anderson | Daughter | — | 27 | ~1913 |
| Andrew Nelson | Head | — | 54 | ~1886 |
| Robert Anderson | Other | — | 34 | ~1906 |
| Donald Nelson | Son | — | 17 | ~1923 |
Census Appearances
1920
Cook, Illinois
Daughter, age
Cook, Illinois · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 11
Cook, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mildred |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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 22
Cook-County, Illinois · implied b. ~1918 — 5 household members
| Surname | Nelson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Occupation | cashier |
| Industry | real estate |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 900 |
| Highest Grade | H 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 Mildred Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Nelson (~0.92 confidence) and mother Mabel Nelson (~0.92 confidence) and father Andrew Nelson (~0.92 confidence) and father George Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Nelson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mabel Nelson
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Andrew Nelson
b. ~1886
Source father
● Household
· direct · ~0.92
Father
George Nelson
b. ~1894
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mildred Nelson
Daughter · 1940 · age 22 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
Donald Nelson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernette Anderson
Sibling · 1940 · age 27
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
39 people indexed on this census page (nara:1940:m-t0627-00939-00341)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Koffers | 10 | Son | — | Illinois |
| 2 | Catherine Heilman | 57 | Head | — | England |
| 3 | Frank Heilman | 24 | Son | Silversmith | Illinois |
| 4 | George Heilman | 23 | Son | Ink Mixer | Illinois |
| 5 | Raymond Heilman | 21 | Son | Shipping Clerk | Illinois |
| 6 | Sam Heilman | 18 | Son | None | Illinois |
| 7 | Jessie Heilman | 16 | Daughter | — | Illinois |
| 8 | Pearl Heilman | 15 | Daughter | — | Illinois |
| 9 | James Heilman | 11 | Son | — | Illinois |
| 10 | Jean Heilman | 11 | Daughter | — | Illinois |
| 11 | James Cason | 30 | Head | Manager | Illinois |
| 12 | Jane Cason | 31 | Wife | Office Clerk | Illinois |
| 13 | Henry Vandenborg | 37 | Head | Salesman | Illinois |
| 14 | Della Vandenborg | 38 | Wife | — | Illinois |
| 15 | Robert Vandenborg | 12 | Son | — | Illinois |
| 16 | Ramona Vandenborg | 11 | Daughter | — | Illinois |
| 17 | Earl Vandenborg | 10 | Son | — | Illinois |
| 18 | Joe Vandenborg | 7 | Son | — | Illinois |
| 19 | Raymond Simons | 36 | Head | Policeman | Illinois |
| 20 | Julia Simons | 29 | Wife | — | Illinois |
| 21 | Raymond Simons | 3 | Son | — | Illinois |
| 22 | William Linkus | 52 | Head | Varnish Maker | Lithuania |
| 23 | Frances Linkus | 57 | Wife | — | Lithuania |
| 24 | Peter Linkus | 25 | Son | Top Stayer | Illinois |
| 25 | Frank Linkus | 21 | Son | Painter Helper | Illinois |
| 26 | Andrew Nelson | 54 | Head | Upholsterer | Sweden |
| 27 | Mildred Nelson THIS PERSON | 22 | Daughter | Cashier | Illinois |
| 28 | Donald Nelson | 17 | Son | — | Illinois |
| 29 | Robert Anderson | 34 | Son-in-law | Tailor | Indiana |
| 30 | Bernette Anderson | 27 | Daughter | — | Illinois |
| 31 | Gust Peterson | 68 | Head | Carpenter | Sweden |
| 32 | Annie Peterson | 68 | Wife | — | Sweden |
| 33 | Sylvester Smith | 31 | Head | Minister | Colorado |
| 34 | Thelma Smith | 36 | Wife | — | Iowa |
| 35 | Paul Smith | 5 | Son | — | Ohio |
| 36 | Andrew Ciszar | 31 | Head | Scavenger | Hungary |
| 37 | Mary Ciszar | 31 | Wife | — | Illinois |
| 38 | Richard Ciszar | 11 | Son | — | Illinois |
| 39 | Andrea Ciszar | 7 | Daughter | — | Illinois |
Pedigree Summary
Mildred + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)