CJ
Clara Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Clara Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 2-person household.
Age 69
b. ~1871
Female
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Clara S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1871 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clara | Age | Birth yr |
|---|---|---|---|---|
| Norma Johnson | Daughter | — | 41 | ~1899 |
| Clara Johnson | Head | — | 69 | ~1871 |
Census Appearances
1920
Cook, Illinois
Other, age 48
Cook, Illinois · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clara |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1886 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Dressmaker |
| Industry | At Home |
| Class of Worker | Oa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Other, age 58
Cook, Illinois · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Clara |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1893 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 69
Cook-County, Illinois · implied b. ~1871 — 2 household members
| Surname | Johnson |
| Given Name | Clara S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Clara Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clara Johnson
Head · 1940 · age 69 · b. ~1871 · Illinois
★ You are viewing this record
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-t0627-01004-00832)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frederick Huenz | 57 | Head | Carpenter | Germany |
| 2 | Theresa Huenz | 55 | Wife | — | Germany |
| 3 | Peter Nagel | 61 | Head | Ornamental Iron Worker | Latvia |
| 4 | Anna Nagel | 59 | Wife | — | Latvia |
| 5 | Joan Noel | 10 | Grand-daughter | — | Illinois |
| 6 | Bernard Holtz | 12 | Grand-son | — | Illinois |
| 7 | Carl Mayhak | 50 | Head | Machinist | Germany |
| 8 | Alma Mayhak | 46 | Wife | — | Germany |
| 9 | Frida Mayhak | 25 | Daughter | House Work | Germany |
| 10 | Heinz Mayhak | 21 | Son | Welding | Germany |
| 11 | Ruddie Mayhak | 17 | Son | — | Germany |
| 12 | Frank Richter | 37 | Head | Carpenter | Austria |
| 13 | Mary Richter | 34 | Wife | — | Austria |
| 14 | Marion Richter | 10 | Daughter | — | Illinois |
| 15 | Frank Richter | 7 | Son | — | Illinois |
| 16 | William Berndt | 40 | Head | Salesman | Illinois |
| 17 | Sharon Berndt | 36 | Wife | — | Illinois |
| 18 | Lilliam Berndt | 9 | Daughter | — | Illinois |
| 19 | Carole Berndt | 6 | Daughter | — | Illinois |
| 20 | William H. Raith | 46 | Head | Bookkeeper | Illinois |
| 21 | Clara Raith | 45 | Wife | — | Illinois |
| 22 | William R. Harrington | 29 | Head | Laundry Driver | Illinois |
| 23 | Kathryn Harrington | 27 | Wife | — | Illinois |
| 24 | Marilyn Harrington | 1 | Daughter | — | Illinois |
| 25 | Frank Gaede | 52 | Head | Stockkeeper | Illinois |
| 26 | Evelyn Gaede | 54 | Wife | — | Illinois |
| 27 | Oluf Jacobsen | 40 | Head | Bookkeeper | Denmark |
| 28 | Elfrida Jacobsen | 39 | Wife | — | Denmark |
| 29 | Lillian Jacobsen | 14 | Daughter | — | Illinois |
| 30 | Eric Jacobsen | 12 | Son | — | Illinois |
| 31 | Henry Jensen | 36 | Brother-in-law | Machinist | Denmark |
| 32 | Elizabeth Jensen | 46 | Sister-in-law | — | Denmark |
| 33 | Hilding Johnson | 37 | Head | Sales Manager | Illinois |
| 34 | Alva Johnson | 36 | Wife | — | Illinois |
| 35 | Justine Johnson | 76 | Head | — | Sweden |
| 36 | Hilder Johnson | 39 | Daughter | Stenographer | Illinois |
| 37 | Clara S. Johnson THIS PERSON | 69 | Head | — | Sweden |
| 38 | Norma Johnson | 41 | Daughter | Comptometer Oper. | Illinois |
| 39 | Nicholas Letang | 53 | Head | Barber Shop | Yugoslavia |
| 40 | Mathilda Letang | 52 | Wife | — | Austria |
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)