MH
Mildred Harris — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mildred Harris across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Minnie & Earl — first a daughter (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Harris |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Clerk |
| Industry | Local Government |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Harris | Daughter | — | 31 | ~1909 |
| Minnie Harris | Spouse | — | 57 | ~1883 |
| Earl Harris | Head | — | 54 | ~1886 |
Census Appearances
1910
Cook, Illinois
Daughter, age
Cook, Illinois · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mildred E |
| 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 |
1920
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Age at First Marriage | S |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 31
Cook-County, Illinois · implied b. ~1909 — 3 household members
| Surname | Harris |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Clerk |
| Industry | Local Government |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | C 4 |
| 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 Mildred Harris across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Minnie Harris (~0.92 confidence) and father Earl Harris (~0.92 confidence) and father Earl Harris (~0.92 confidence) and father Earl Harris (~0.92 confidence) and father Emil Harris (~0.92 confidence) and mother Minnie Harris (~0.92 confidence) and mother Minnie Harris (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Minnie Harris
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Earl Harris
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Earl Harris
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Earl Harris
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Emil Harris
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Minnie Harris
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Minnie Harris
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Harris
Daughter · 1940 · age 31 · b. ~1909 · Illinois
★ You are viewing this record
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
38 people indexed on this census page (nara:1940:m-t0627-00957-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leon Biller | 5 | Son | — | Illinois |
| 42 | Diana Biller | 3 | Daughter | — | Illinois |
| 43 | Joseph Barry | 44 | Head | Laborer | Austria |
| 44 | Rose Barry | 42 | Wife | — | Austria |
| 45 | Joseph Barry | 18 | Son | — | Austria |
| 46 | Theresa Barry | 17 | Daughter | — | Illinois |
| 47 | Wilma Barry | 15 | Daughter | — | Illinois |
| 48 | Herman Barbrau | 43 | Head | Meat Cutter | Canada French |
| 49 | Louise Barbrau | 39 | Wife | — | Illinois |
| 50 | Lillian Barbrau | 18 | Daughter | Waitress | Illinois |
| 51 | Herman Barbrau | 16 | Son | — | Illinois |
| 52 | Earl D. Harris | 54 | Head | Clerk | Illinois |
| 53 | Minnie Harris | 57 | Wife | — | Illinois |
| 54 | Mildred Harris THIS PERSON | 31 | Daughter | Clerk | Illinois |
| 55 | Catherine Herth | 40 | Head | Housewife | Illinois |
| 56 | Eleanor Herth | 14 | Daughter | — | Illinois |
| 57 | Patrick Noone | 79 | Head | Hammersmith | Irish Free State |
| 58 | Bridget Noone | 70 | Wife | — | Irish Free State |
| 59 | Otto Kirkle | 36 | Head | Auto Mechanic | Minnesota |
| 60 | Madlyn Kirkle | 36 | Wife | — | Illinois |
| 61 | Donald Kirkle | 7 | Son | — | Illinois |
| 62 | William Zuidema | 44 | Head | Cement Worker | New Jersey |
| 63 | Hattie Zuidema | 45 | Daughter | — | Iowa |
| 64 | John Zuidema | 19 | Son | Cement Worker | Iowa |
| 65 | Florence Zuidema | 13 | Daughter | — | Iowa |
| 66 | Mary Ann Zuidema | 5 | Daughter | — | Iowa |
| 67 | John Cooper | 51 | Head | Relief Cashier | Illinois |
| 68 | Helen Cooper | 26 | Son | Adjuster | Illinois |
| 69 | Cornelius Cooper | 24 | Son | Complaint Correspondent | Illinois |
| 70 | John Cooper | 21 | Son | — | Illinois |
| 71 | Julius A. Betten | 51 | Head | Proprietor | Iowa |
| 72 | Elizabeth Betten | 49 | Wife | — | Illinois |
| 73 | Ernest Rudloff | 77 | Roomer | — | Germany |
| 74 | Joseph E. Housholder | 43 | Head | Attendant | Missouri |
| 75 | Dorothea N. Housholder | 37 | Wife | — | Illinois |
| 76 | Jacqueline Housholder | 13 | Daughter | — | Illinois |
| 77 | Buster Housholder | 11 | Son | — | Illinois |
| 78 | Mary Lou Housholder | 1 | Daughter | — | Illinois |
Pedigree Summary
Mildred
Gen 1 · 7 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)