JJ
Julius Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Julius Johnson across the 1900, 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 4-person household.
Age 57
b. ~1873
Male
Head
Born: Norway
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Johnson |
| Given Name | Julius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 25 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | Salesman |
| Industry | Real Estate |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Value / Rent | 18000 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Salesman |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1873 |
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 1930 census.
| Name | Relation to head | Relative to Julius | Age | Birth yr |
|---|---|---|---|---|
| Lillian Johnson | Daughter | — | 22 | ~1908 |
| Agnes Jacobson | Other | — | 25 | ~1905 |
| Emma Johnson | Other | — | 45 | ~1885 |
| Julius Johnson | Head | — | 57 | ~1873 |
Census Appearances
1900
Cook, Illinois
Head, age 26
Cook, Illinois · implied b. ~1874 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Julius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Norway |
| Birth Month | Jan |
| Birth Year | 1874 |
| Year of Immigration | 1893 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Janitor |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1910
Cook, Illinois
Head, age 35
Cook, Illinois · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Julius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Norway |
| Years Married | 7 |
| Year of Immigration | 1883 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Salesman |
| Industry | Coffee |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1920
Cook, Illinois
Head, age 46
Cook, Illinois · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Julius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1881 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Salesman |
| Industry | Clothing company |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth Country | Norway |
| Year of Naturalization | 1887 |
| Birthplace (normalized) | norway |
1930
Cook, Illinois
Head, age 57
Cook, Illinois · implied b. ~1873 — 4 household members
| Surname | Johnson |
| Given Name | Julius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 25 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Salesman |
| Industry | Real Estate |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Value / Rent | 18000 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Julius Johnson across 4 US Census years (1900, 1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage.
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This person
Anchor record
Julius Johnson
Head · 1930 · age 57 · b. ~1873 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel470:0633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Conrad Knudsen | 69 | Head | None | Norway |
| 2 | Hanna Knudsen | 64 | Wife-H | None | Illinois |
| 3 | Cora Knudsen | 35 | Daughter | None | Illinois |
| 4 | Harold Knudsen | 30 | Son | Book Keeper | Illinois |
| 5 | Albert S. Johnson | 37 | Head | Architect | Illinois |
| 6 | Florence Johnson | 32 | Wife-H | Conductor | Illinois |
| 7 | Harvey Johnson | 9 | Son | None | Illinois |
| 8 | Robert Johnson | 30 | Head | President | Alabama |
| 9 | Margaret Johnson | 30 | Wife-H | None | Sweden |
| 10 | Robert Jr. Johnson | 4 | Son | None | Illinois |
| 11 | Harold Johnson | 2 | Son | None | Illinois |
| 12 | Hilma Ericson | 63 | Mother-law | None | Sweden |
| 13 | Charles Lamon | 51 | Head | Proprietor | Ohio |
| 14 | Mary A. Lamon | 51 | Wife-H | None | Wales |
| 15 | Louise Lamon | 21 | Son | Clerk | Illinois |
| 16 | Irving Lamon | 22 | Nephew | Clerk | Ohio |
| 17 | James Jasurek | 31 | Head | Salesman | Illinois |
| 18 | Lillian Jasurek | 30 | Wife-H | None | Illinois |
| 19 | Joseph Jasurek | 55 | Head | Proprietor | Czech-Slovakia |
| 20 | Rose Jasurek | 51 | Wife-H | None | Czech-Slovakia |
| 21 | Mildred Jasurek | 19 | Daughter | Comptometer | Illinois |
| 22 | Andrew Benson | 55 | Head | Patternmaker | Denmark |
| 23 | Irena Benson | 54 | Wife-H | None | Illinois |
| 24 | Jane Spalum | 18 | Niece | None | Illinois |
| 25 | Charles Frey | 60 | Head | Proprietor | Germany |
| 26 | Emma Frey | 54 | Wife-H | None | Illinois |
| 27 | Earl Frey | 25 | Son | Conductor | Illinois |
| 28 | Louise Frey | 21 | Daughter | Secretary | Illinois |
| 29 | Roland Frey | 18 | Son | Clerk | Illinois |
| 30 | Margaret Frey | 17 | Daughter | None | Illinois |
| 31 | Julius Johnson THIS PERSON | 57 | Head | Salesman | Norway |
| 32 | Emma T. Johnson | 45 | Wife-H | None | Sweden |
| 33 | Lillian Johnson | 22 | Daughter | Stenographer | Illinois |
| 34 | Agnes Jacobson | 25 | Niece | Teller | Illinois |
| 35 | Edgar Dodd | 39 | Head | Salesman | Illinois |
| 36 | Bertha Dodd | 38 | Wife-H | Clerk | Illinois |
| 37 | Alice Dodd | 18 | Daughter | None | Illinois |
| 38 | Muriel Dodd | 17 | Daughter | None | Illinois |
| 39 | Wilfred Coty | 60 | Head | Clerk | Canada-French |
| 40 | Emma Coty | 60 | Wife-H | None | Massachusetts |
| 41 | Grace Coty | 36 | Daughter | Typist | Illinois |
| 42 | John Coty | 29 | Son | None | Illinois |
| 43 | Frank Coty | 23 | Son | Helper | Illinois |
| 44 | Louis Grollmick | 40 | Head | Architect | Germany |
| 45 | Amelia Grollmick | 35 | Wife | None | Illinois |
| 46 | Evaline Grollmick | 17 | Daughter | None | Illinois |
| 47 | Dorothy Grollmick | 16 | Daughter | None | Illinois |
| 48 | Robert Grollmick | 11 | Son | None | Illinois |
| 49 | Maurice La Marche | 39 | Head | Proprietor | Illinois |
| 50 | Beatrice La Marche | 34 | Wife-H | None | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)