RC
Robert Carlson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Robert Carlson across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 11-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | none |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rockford City |
| Est. Birth Year | ~1926 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Carlson | Son | — | 14 | ~1926 |
| Anna Hall | Other | — | 75 | ~1865 |
| Harold Carlson | Son | — | 18 | ~1922 |
| Anna Carlson | Spouse | — | 51 | ~1889 |
| Joseph Carlson | Son | — | 19 | ~1921 |
| Gunnard Carlson | Head | — | 49 | ~1891 |
| Vivian Carlson | Daughter | — | 9 | ~1931 |
| Edna Carlson | Daughter | — | 16 | ~1924 |
| Carl Carlson | Son | — | 21 | ~1919 |
| Lilla Carlson | Daughter | — | 5 | ~1935 |
| Alice Carlson | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Winnebago, Illinois
Son, age 4
Winnebago, Illinois · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Son, age 14
Winnebago-County, Illinois · implied b. ~1926 — 11 household members
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Occupation | none |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Carlson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Carlson
Son · 1940 · age 14 · b. ~1926 · Illinois
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Sibling
Harold Carlson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Carlson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lilla Carlson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vivian Carlson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Carlson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Carlson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Carlson
Sibling · 1940 · age 16
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00912-00351)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Selma Sandvick | 19 | Maid | Child Attendant | Illinois |
| 2 | Huldah Peterson | 71 | Head | None | Sweden |
| 3 | Huldah Peterson | 51 | Dau | None | Sweden |
| 4 | Robert Larson | 51 | Head | None | Sweden |
| 5 | Irving Larson | 14 | Son | Shipping Clerk | Illinois |
| 6 | Herbert Larson | 11 | Son | None | Illinois |
| 7 | Gunnard Carlson | 49 | Head | Repair Man | Sweden |
| 8 | Anna Carlson | 51 | Wife | None | Sweden |
| 9 | Carl Carlson | 21 | Son | Shipping Clerk | Illinois |
| 10 | Joseph Carlson | 19 | Son | Idlers | Illinois |
| 11 | Harold Carlson | 18 | Son | None | Illinois |
| 12 | Alice Carlson | 17 | Daughter | None | Illinois |
| 13 | Edna Carlson | 16 | Daughter | None | Illinois |
| 14 | Robert Carlson THIS PERSON | 14 | Son | None | Illinois |
| 15 | Vivian Carlson | 9 | Daughter | None | Illinois |
| 16 | Lilla Carlson | 5 | Daughter | None | Illinois |
| 17 | Anna Hall | 75 | Lodger | None | Illinois |
| 18 | Hans Mickelson | 40 | Head | Clerk | S. Dakota |
| 19 | Aleen Mickelson | 37 | Wife | None | Illinois |
| 20 | P. Milton Mickelson | 17 | Son | None | Illinois |
| 21 | M. Robert Mickelson | 11 | Son | None | Illinois |
| 22 | Francis O'Keefe | 28 | Lodger | Electrical Engineer | Illinois |
| 23 | James Cotton | 63 | Head | None | Illinois |
| 24 | Jennie Cotton | 60 | Wife | None | Illinois |
| 25 | Otto Wolfram | 61 | Head | Doctor Of Dental Surgery | Wisconsin |
| 26 | Myrtle Wolfram | 45 | Wife | None | Illinois |
| 27 | Alex Fortier | 57 | Lodger | Department Manager | Ireland |
| 28 | Fred Kelly | 67 | Head | None | Delaware |
| 29 | Nettie Kelly | 70 | Wife | None | Pennsylvania |
| 30 | Albert Shalicross | 62 | Head | None | Indiana |
| 31 | Deva Shalicross | 59 | Wife | None | Indiana |
| 32 | William Jager | 21 | Lodger | Apprentice Baker | Wisconsin |
| 33 | George Poemer | None | Lodger | — | — |
| 34 | Harry Barnard | 68 | Head | Carpenter | Illinois |
| 35 | Mabel Barnard | 68 | Wife | None | Illinois |
| 36 | Viola Runkabage | 31 | Lodger | Beautician | Pennsylvania |
| 37 | Lillie Broderick | 69 | Lodger | None | Sweden |
| 38 | Arthur Breabohm | 26 | Lodger | Salesman | Illinois |
| 39 | Mary Breabohm | 20 | Lodger | Inspector | Illinois |
| 40 | Olive Bink | 52 | Head | Clerk | Illinois |
Related Census Records
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)