SC
Sarah Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Sarah Clark across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Jennie & James — first a daughter (b.~1895), then head of a 2-person household.
Age 45
b. ~1895
Female
Daughter
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Clark |
| Given Name | Sarah R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Clerk |
| Industry | Currency Exch |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1895 |
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 Sarah | Age | Birth yr |
|---|---|---|---|---|
| Sarah Clark | Daughter | — | 45 | ~1895 |
| James Clark | Head | — | 69 | ~1871 |
Census Appearances
1920
Cook, Illinois
Daughter, age 24
Cook, Illinois · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Sarah B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerk writer |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1907 |
| Birthplace (normalized) | scotland |
1930
Cook, Illinois
Daughter, age 36
Cook, Illinois · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Sarah B |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Bookkeeper |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Daughter, age 45
Cook-County, Illinois · implied b. ~1895 — 2 household members
| Surname | Clark |
| Given Name | Sarah R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Clerk |
| Industry | Currency Exch |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Sarah Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Jennie Clark (~0.92 confidence) and father James Clark (~0.92 confidence) and father James Clark (~0.92 confidence) and father James Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Jennie Clark
b. ~1866
Source mother
● Household
· direct · ~0.92
Father
James Clark
b. ~1871
Source father
● Household
· direct · ~0.92
Father
James Clark
b. ~1872
Source father
● Household
· direct · ~0.92
Father
James Clark
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
Sarah Clark
Daughter · 1940 · age 45 · b. ~1895 · 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-t0627-00929-00450)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William D Davis | 44 | Head | Clerk | Kentucky |
| 42 | Lillian Davis | 37 | Wife | — | Michigan |
| 43 | Arnold Davis | 15 | Son | New Worker | Illinois |
| 44 | Gloria Davis | 14 | Daughter | — | Illinois |
| 45 | De Forest L Hubbell | 53 | Head | Prof. Engineer | Minnesota |
| 46 | Margaret Hubbell | 46 | Wife | — | Wisconsin |
| 47 | Margaret Hubbell | 19 | Daughter | — | Illinois |
| 48 | Thelma Hubbell | 17 | Daughter | — | Illinois |
| 49 | Alfred Hubbell | 16 | Son | — | Illinois |
| 50 | Anna Hubbell | 14 | Daughter | — | Illinois |
| 51 | Joseph Hubbell | 11 | Son | — | Illinois |
| 52 | Catherine Hubbell | 6 | Daughter | — | Illinois |
| 53 | Axel Anderson | 68 | Head | Janitor | Sweden |
| 54 | Mrs. Karin Anderson | 60 | Wife | — | Sweden |
| 55 | Eric Anderson | 32 | Son | Baker | Sweden |
| 56 | Else Anderson | 27 | Daughter | Typist | Illinois |
| 57 | Martha Anderson | 23 | Daughter | Housemaid | Illinois |
| 58 | Harold Anderson | 21 | Son | New Worker | Illinois |
| 59 | Gemina Clark | 74 | Wife | — | Scotland |
| 60 | James Clark | 69 | Head | — | Illinois |
| 61 | Sarah R Clark THIS PERSON | 45 | Daughter | Clerk | Scotland |
| 62 | James Clarke | 36 | Head | School Janitor | Illinois |
| 63 | Betty Jane Clarke | 26 | Daughter | — | England |
| 64 | Edward Herbig | 45 | Head | Plumber | Illinois |
| 65 | Charles De Graw | 72 | Head | Proprietor | Canada Eng |
| 66 | A. R. Cuthbertson | 64 | Lodger | — | Connecticut |
| 67 | Mae Dennard | 7 | Lodger | — | Illinois |
| 68 | Albert Ackerman | 37 | Lodger | Salesman | Illinois |
| 69 | Dorothy Ackerman | 30 | Lodger | Dice Girl | Illinois |
| 70 | Michael Keenan | 39 | Head | — | Irish Free State |
| 71 | Thomas Keenan | 24 | Son | Oiler | Illinois |
| 72 | Gerard Keenan | 7 | Son | — | Illinois |
| 73 | Barbara Keenan | 6 | Daughter | — | Illinois |
| 74 | Alfred Hannemann | 21 | Head | Cereleaver | Illinois |
| 75 | Mary Hannemann | 18 | Wife | — | Illinois |
| 76 | Catherine Hannemann | 23 | Sister | — | Missouri |
| 77 | William Frederick Ward | 27 | Head | Soda Dispenser | Illinois |
| 78 | Elizabeth Ward | 25 | Wife | — | Missouri |
| 79 | Albert Ward | 4 | Son | — | Illinois |
| 80 | Gerald William Ward | 1 | Son | — | Illinois |
Pedigree Summary
Sarah
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)