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Robert Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Harmon across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Harmon |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago (City) |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Stock Boy |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 100 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stock Boy |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1921 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Marion Harmon | Head | — | 44 | ~1896 |
| Joseph Harmon | Son | — | 15 | ~1925 |
| Leo Harmon | Son | — | 7 | ~1933 |
| Marion Harmon | Daughter | — | 8 | ~1932 |
| Ronald Harmon | Son | — | 11 | ~1929 |
| Jas Harmon | Son | — | 21 | ~1919 |
| Robert Harmon | Son | — | 19 | ~1921 |
| Anna Lindner | Other | — | 22 | ~1918 |
Census Appearances
1930
Cook, Illinois
Son, age 8
Cook, Illinois · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 19
Cook-County, Illinois · implied b. ~1921 — 8 household members
| Surname | Harmon |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago (City) |
| 1935 Residence (County) | Cook |
| Occupation | Stock Boy |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 100 |
| Highest Grade | Hs 2 |
| 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 Robert Harmon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Harmon
Son · 1940 · age 19 · b. ~1921 · Illinois
★ You are viewing this record
Sibling
Ronald Harmon
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jas Harmon
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Harmon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Harmon
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Harmon
Sibling · 1940 · 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
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-t0627-00981-00481)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion E. Harmon | 44 | Head | Clerk | Illinois |
| 2 | Jas. W. Harmon | 21 | Son | Salesman | Illinois |
| 3 | Robert Harmon THIS PERSON | 19 | Son | Stock Boy | Illinois |
| 4 | Joseph E. Harmon | 15 | Son | Stock Boy | Illinois |
| 5 | Ronald F. Harmon | 11 | Son | Stock Boy | Illinois |
| 6 | Marion T. Harmon | 8 | Daughter | — | Illinois |
| 7 | Leo J. Harmon | 7 | Son | — | Illinois |
| 8 | Anna T. Lindner | 22 | Servant | Maid | Illinois |
| 9 | Sophia Carlberg | 51 | Head | — | Sweden |
| 10 | David A. Carlberg | 24 | Son | Truck Driver | Michigan |
| 11 | Herman S. Carlberg | 29 | Son | Truck Driver | Michigan |
| 12 | Edward Kaspar | 35 | Son-in-law | Salesman | Wisconsin |
| 13 | Bessie Kaspar | 40 | Daughter | Stenographer | Michigan |
| 14 | Edward J. Harrigan | 37 | Head | Switchman | Illinois |
| 15 | Adelia Harrigan | 31 | Daughter | Stenographer | Michigan |
| 16 | Esther M. Anderson | 29 | Head | Stenographer | Illinois |
| 17 | Ruth E. Anderson | 32 | Sister | Stenographer | Illinois |
| 18 | Sarah A. Anderson | 38 | Sister | — | Illinois |
| 19 | Chas. Wiley | 49 | Head | Stationary Engineer | Illinois |
| 20 | Mabel C. Wiley | 45 | Wife | — | Montana |
| 21 | Victor Lust | 59 | Head | Conductor | Germany |
| 22 | Katie M. Lust | 59 | Wife | — | Michigan |
| 23 | Jos. C. Hess | 53 | Head | Proprietor | Austria |
| 24 | Lillian Hess | 51 | Wife | — | Illinois |
| 25 | John C. Lepelding | 71 | Head | — | Iowa |
| 26 | Rose Lepelding | 68 | Wife | — | Indiana |
| 27 | Eric Pepper | 54 | Head | Coach Carpenter | Norway |
| 28 | Guro Pepper | 50 | Wife | — | Norway |
| 29 | Harold E. Pepper | 20 | Son | Mailing Clerk | Illinois |
| 30 | Carl T. Carlson | 40 | Head | Laborer | Sweden |
| 31 | Florence A. Carlson | 38 | Wife | — | Minnesota |
| 32 | Dolores F. Carlson | 9 | Daughter | — | Illinois |
| 33 | Stanley Link | 33 | Lodger | Laborer | Illinois |
| 34 | Carl J. Troberg | 50 | Head | Cabinet Maker | Finland |
| 35 | Adina Troberg | 49 | Wife | — | Finland |
| 36 | Edward T. Troberg | 14 | Son | Printer | Finland |
| 37 | Bernice V. Bramfield | 25 | Daughter | Maid | Finland |
| 38 | Torsten W. B. Torsten | 19 | Son | Clerk | Finland |
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)