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John Jacobson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this John Jacobson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 4-person household.
Age 77
b. ~1863
Male
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Jacobson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Illinois |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Illinois |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Rockford |
| Est. Birth Year | ~1863 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Hugh Grant | Other | — | 26 | ~1914 |
| Norma Sharp | Daughter | — | 37 | ~1903 |
| John Jacobson | Head | — | 77 | ~1863 |
| Pauline Swanson | Daughter | — | 16 | ~1924 |
Census Appearances
1920
Winnebago, Illinois
Other, age 57
Winnebago, Illinois · implied b. ~1863 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobson |
| Given Name | John |
| Relationship to Head | Father |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1889 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Year of Naturalization | 1896 |
| Birthplace (normalized) | sweden |
1930
Winnebago, Illinois
Head, age 71
Winnebago, Illinois · implied b. ~1859 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobson |
| Given Name | John B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 32 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Gardner |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 8000 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Winnebago-County, Illinois
Head, age 77
Winnebago-County, Illinois · implied b. ~1863 — 4 household members
| Surname | Jacobson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Illinois |
| 1935 Residence (County) | Winnebago |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Illinois |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Jacobson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Jacobson
Head · 1940 · age 77 · b. ~1863 · 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
39 people indexed on this census page (nara:1940:m-t0627-00913-00734)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Carlson | 21 | Son | Shipping Clerk | Illinois |
| 42 | Juanita Sandell | 20 | Cousin | Office Work | Illinois |
| 44 | Carl Tinberg | 71 | Head | — | Sweden |
| 45 | Sigrid Tinberg | 71 | Wife | — | Sweden |
| 46 | Edith Tinberg | 39 | Daughter | — | Illinois |
| 47 | Ethel Tinberg | 34 | Daughter | Office | Illinois |
| 48 | August Lundgren | 61 | Head | Cabinet Maker | Sweden |
| 49 | Hilma Lundgren | 60 | Wife | — | Sweden |
| 50 | Arthur Lundgren | 34 | Son | Cabinet Maker | Illinois |
| 51 | Carl Stockstad | 35 | Roomer | Office | Illinois |
| 52 | Philip Hoad | 35 | Roomer | Bartender | Illinois |
| 53 | Maurice Jones | 31 | Head | Truck Driver | Illinois |
| 54 | Eleanor Jones | 29 | Wife | — | Illinois |
| 55 | Fay Jones | 3 | Daughter | — | Illinois |
| 56 | John Jacobson THIS PERSON | 77 | Head | — | Sweden |
| 57 | Norma Sharp | 37 | Daughter | — | Illinois |
| 58 | Pauline Swanson | 16 | Daughter | — | Illinois |
| 59 | Hugh Grant | 26 | Boarder | Mechanic | Illinois |
| 60 | Harry W. Johnson | 46 | Head | Machinist | Illinois |
| 61 | Lillie Johnson | 35 | Wife | — | Illinois |
| 62 | Barbara J. Johnson | 10 | Daughter | — | Illinois |
| 63 | Charlotte Johnson | 7 | Daughter | — | Illinois |
| 64 | Lester E. Newton | 24 | Head | Draftsman | Wisconsin |
| 65 | Kathryn Newton | 21 | Wife | — | Illinois |
| 66 | Roger Newton | 2 | Son | — | Illinois |
| 67 | Donald Ullrich | 30 | Head | Salesman | Illinois |
| 68 | Mildred Ullrich | 28 | Wife | Operator | Illinois |
| 69 | Evelyn Ullrich | 34 | Roomer | Operator | Illinois |
| 70 | Mary Ellen Ullrich | 5 | Daughter | — | Illinois |
| 71 | Sverre Pläikli | 28 | Head | Machinist | Norway |
| 72 | Emma Pläikli | 32 | Wife | Comptometer | Illinois |
| 73 | Henry Levine | 52 | Roomer | Mechanic | Sweden |
| 74 | Gustav Leovous | 25 | Head | Handler | Minnesota |
| 75 | Leta Mae Leovous | 29 | Wife | — | Iowa |
| 76 | Almon W. Tucker | 27 | Head | Sales Engineer | Illinois |
| 77 | Lucile Tucker | 22 | Wife | Telephone Oper | Illinois |
| 78 | Archie Heyburg | 28 | Head | Photographer | Illinois |
| 79 | Pauline Heyburg | 27 | Wife | — | Illinois |
| 80 | Harley C. Larson | 50 | Head | Machinist | 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)