JC
John Carlson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this John Carlson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 5-person household.
Age 48
b. ~1892
Male
Head
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Manager |
| Industry | Chain Grocery Store |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 1560 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Occupation | Manager |
| Township / Ward | Rockford |
| Est. Birth Year | ~1892 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Elsie Carlson | Daughter | — | 15 | ~1925 |
| John Carlson | Head | — | 48 | ~1892 |
| William Carlson | Son | — | 12 | ~1928 |
| Raymond Carlson | Son | — | 18 | ~1922 |
| Matilda Carlson | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Silver Bow, …
Other, age 26
Silver Bow, Montana · implied b. ~1894 — 19 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Finland |
| Year of Immigration | 1910 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Miner |
| Industry | Copper Mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Finnish |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1930
Winnebago, Illinois
Head, age 36
Winnebago, Illinois · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1909 |
| Age at First Marriage | 26 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Store Manager |
| Industry | Gro. Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Radio Set | R |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Winnebago-County, Illinois
Head, age 48
Winnebago-County, Illinois · implied b. ~1892 — 5 household members
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Occupation | Manager |
| Industry | Chain Grocery Store |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 1560 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
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 John Carlson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Carlson
Head · 1940 · age 48 · b. ~1892 · Illinois
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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-t0627-00915-00657)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Lundberg | 23 | Wife | Buffer | Illinois |
| 2 | Catherine Mausmayer | 71 | Head | — | Germany |
| 3 | Harry Mausmayer | 38 | Son | Machine Operator | Illinois |
| 4 | George Mausmayer | 30 | Son | Grinder | Illinois |
| 5 | Edwin Mcbroom | 49 | Head | Machinist | Iowa |
| 6 | Florence Mcbroom | 40 | Wife | — | Illinois |
| 7 | Dorothy Mcbroom | 19 | Daughter | Machine Operator | Illinois |
| 8 | Joe Kuzwiaki | 57 | Head | Laborer | Lithuania |
| 9 | Catherine Kuzwiaki | 63 | Wife | — | Lithuania |
| 10 | Ragnel Bernsten | 57 | Head | Laborer | Lithuania |
| 11 | Arvid Erickson | 54 | Head | Machine Operator | Sweden |
| 12 | Astrid Erickson | 40 | Wife | Assembler | Sweden |
| 13 | Annie Chappell | 69 | Head | Custodian | Kentucky |
| 14 | Ida Chappell | 44 | Wife | — | Wisconsin |
| 15 | Monroe Hellman | 46 | Son in law | Sprayer | Alabama |
| 16 | Zetta Hellman | 20 | Daughter | Maid | Arkansas |
| 17 | Richard Krug | 27 | Head | Set-Up-Man | Illinois |
| 18 | Edith Krug | 25 | Wife | — | Illinois |
| 19 | Harry Matheny | 54 | Head | Laborer | Illinois |
| 20 | Flora Matheny | 42 | Wife | Housework | Illinois |
| 21 | Otta Frances Matheny | 15 | Daughter | — | Illinois |
| 22 | Dorothy Matheny | 7 | Daughter | — | Illinois |
| 23 | Sven Runberg | 31 | Head | Machine Operator | Sweden |
| 24 | Violet Runberg | 28 | Wife | Machine Operator | Illinois |
| 25 | Thomas Runberg | 7 | Son | — | Illinois |
| 26 | John Carlson THIS PERSON | 48 | Head | Manager | Finland |
| 27 | Matilda Carlson | 42 | Wife | — | Minnesota |
| 28 | Raymond Carlson | 18 | Son | Clerk | Illinois |
| 29 | Elsie Carlson | 15 | Daughter | — | Illinois |
| 30 | William Carlson | 12 | Son | — | Illinois |
| 31 | Carl Edgren | 58 | Head | Tool Maker | Sweden |
| 32 | Bayford Saunders | 24 | Head | Machine Operator | Illinois |
| 33 | Alice Saunders | 24 | Wife | — | Illinois |
| 34 | Gerald Saunders | 1 | Son | — | Illinois |
| 35 | Arville Curtis | 36 | Head | Polisher | Wisconsin |
| 36 | Madeline Curtis | 31 | Wife | — | Pennsylvania |
| 37 | Howard Curtis | 11 | Son | — | Ohio |
| 38 | Bert Schultz | 10 | Lodger | — | Illinois |
| 39 | William Petersen | 37 | Head | Grinder | Germany |
| 40 | Bernice Petersen | 43 | Wife | — | Iowa |
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)