NJ
Nels Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Nels Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Nels O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago (city) |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Owner |
| Industry | Plasterer Contractor |
| Class of Worker | E |
| Hours Worked | 40 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Owner |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1869 |
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 Nels | Age | Birth yr |
|---|---|---|---|---|
| Alma Johnson | Spouse | — | 66 | ~1874 |
| Harry Johnson | Son | — | 46 | ~1894 |
| Nels Johnson | Head | — | 71 | ~1869 |
Census Appearances
1910
Cook, Illinois
Other, age 41
Cook, Illinois · implied b. ~1869 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Nels O |
| Relationship to Head | Partner |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Railroad |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1870 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Nels E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1892 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Stationary Engineer |
| Industry | Ice Cream Plant |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth Country | Sweden |
| Year of Naturalization | 1897 |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Other, age 58
Cook, Illinois · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Nels E. |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | First papers filed |
| Year of Immigration | 1893 |
| Age at First Marriage | 37 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Elevated Ry. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 71
Cook-County, Illinois · implied b. ~1869 — 3 household members
| Surname | Johnson |
| Given Name | Nels O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago (city) |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Owner |
| Industry | Plasterer Contractor |
| Class of Worker | E |
| Hours Worked | 40 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| 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 Nels Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Nels Johnson
Head · 1940 · age 71 · b. ~1869 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01015-00310)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William H Fischer | 29 | Head | Stationary Engineer | Illinois |
| 42 | Emma O Fischer | 49 | Wife | — | Wisconsin |
| 43 | Beatrice Fischer | 27 | Daughter | — | Illinois |
| 44 | Roberta Fischer | 11 | Daughter | — | Illinois |
| 45 | Walter Senarfe | 50 | Head | Installer Of Switchboards | Wisconsin |
| 46 | Mary O Senarfe | 44 | Wife | — | Illinois |
| 47 | John Senarfe | 22 | Son | Record Clerk | Wisconsin |
| 48 | Myrtle Barton | 70 | Mother-in-law | — | Pennsylvania |
| 49 | Louis Sorenson | 53 | Head | City Policeman | Denmark |
| 50 | Nora H Sorenson | 46 | Wife | — | Irish Free State |
| 51 | Mary Sorenson | 18 | Daughter | — | Illinois |
| 52 | Louis Jr Sorenson | 16 | Son | — | Illinois |
| 53 | Margaret Sorenson | 12 | Daughter | — | Illinois |
| 54 | James Sorenson | 11 | Son | — | Illinois |
| 55 | George L Stone | 31 | Head | Salesman | Kentucky |
| 56 | Lucretia O Stone | 32 | Wife | — | Indiana |
| 57 | Mary A Stone | 5 | Daughter | — | Kentucky |
| 58 | Samuel Stone | 14 | Nephew | — | Kentucky |
| 59 | Max B Barniville | 54 | Head | — | Illinois |
| 60 | Clara Eagan | 69 | Aunt | — | Kansas |
| 61 | Edward G Weihe | 64 | Roomer | — | Illinois |
| 62 | Clara Carlsen | 70 | Roomer | — | Sweden |
| 63 | Nels O Johnson THIS PERSON | 71 | Head | Owner | Sweden |
| 64 | Alma M Johnson | 66 | Wife | — | Sweden |
| 65 | Harry N Johnson | 46 | Son | Architect | Illinois |
| 66 | Raymond Johnson | 31 | Head | Plasterer | Illinois |
| 67 | Eleanor Johnson | 34 | Wife | — | Missouri |
| 68 | Thomas Lyons | 18 | Son | — | Missouri |
| 69 | Mary O Farquarson | 74 | Head | — | England |
| 70 | Sam H Smale | 62 | Brother | Bookkeeper | Illinois |
| 71 | John Klingenstein | 36 | Head | Postal Clerk | No. Dakota |
| 72 | Florence O Klingenstein | 35 | Wife | — | Illinois |
| 73 | James Klingenstein | 7 | Son | — | Illinois |
| 74 | Anna Rahn | 57 | Mother-in-law | — | Illinois |
| 75 | Isabelle Donovan | 48 | Head | Stenographer | Illinois |
| 76 | Christine Donovan | 74 | Mother | — | Wisconsin |
| 77 | Robert F Donovan | 41 | Brother | Pressman | Missouri |
| 78 | Bernice Donovan | 31 | Sister-in-law | Trained Nurse | New York |
| 79 | Amalia Dieden | 65 | Head | — | Illinois |
| 80 | Antoinette Dieden | 39 | Daughter | Telephone Operator | Illinois |
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)