SC
Sarah Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Livingston-County, Michigan
Our Model Tree links this Sarah Cooper across the 1920, 1930 and 1940 US Censuses in Livingston-County, Michigan (XGBoost, ~Confirmed), with identified parents J & J — first a daughter (b.~1894), then head of a 2-person household.
Age 46
b. ~1894
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Livingston-County, Michigan |
| Surname | Cooper |
| Given Name | Sarah |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Howell City |
| 1935 Residence (County) | Livingston |
| Additional Details | |
| Occupation | Assistant Postmaster |
| Industry | Post office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2300 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Assistant Postmaster |
| Township / Ward | Howell City |
| Est. Birth Year | ~1894 |
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 |
|---|---|---|---|---|
| Mina Cooper | Head | — | 70 | ~1870 |
| Sarah Cooper | Daughter | — | 46 | ~1894 |
Census Appearances
1920
Livingston, Michigan
Daughter, age 26
Livingston, Michigan · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Sarah J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Livingston, Michigan
Daughter, age 36
Livingston, Michigan · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Sarah L. D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Asst. Postmaster |
| Industry | Post Office |
| Class of Worker | 9976 W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Livingston-County, Michigan
Daughter, age 46
Livingston-County, Michigan · implied b. ~1894 — 2 household members
| Surname | Cooper |
| Given Name | Sarah |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Howell City |
| 1935 Residence (County) | Livingston |
| Occupation | Assistant Postmaster |
| Industry | Post office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2300 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Cooper (~0.92 confidence) and father J Cooper (~0.92 confidence) and mother Mina Cooper (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Cooper
b. ~1859
Source father
● Household
· direct · ~0.92
Father
J Cooper
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mina Cooper
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Sarah Cooper
Daughter · 1940 · age 46 · b. ~1894 · Michigan
★ 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 — Livingston-County, Michigan
Open full size
1940 US Federal Census — Livingston-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01780-00380)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond Zizka | 20 | Son | Stenographer | Iowa |
| 42 | Lawrence Zizka | 16 | Son | Salesman | Iowa |
| 43 | Richard Zizka | 13 | Son | — | Michigan |
| 44 | George Dironka | 32 | Lodger | Meat Cutter | Michigan |
| 45 | Emil Gallup | 44 | Head | Farm Manager | Michigan |
| 46 | Emma Gallup | 41 | Wife | — | Michigan |
| 47 | Leonard Gallup | 17 | Son | New Worker | Michigan |
| 48 | Mina M. Cooper | 70 | Head | — | Michigan |
| 49 | Sarah Cooper THIS PERSON | 46 | Daughter | Assistant Postmaster | Michigan |
| 50 | Glen M. Russell | 62 | Head | Electrician | Michigan |
| 51 | Charlotte H. Russell | 61 | Wife | — | Michigan |
| 52 | Harman G. Russell | 26 | Son | Employment Interviewer | Michigan |
| 53 | Fred B. Bushwick | 36 | Head | City Mail Carrier | Michigan |
| 54 | Avis Bushwick | 30 | Wife | — | Michigan |
| 55 | John Hildebrandt | 60 | Head | Electrician | Michigan |
| 56 | Jennie Hildebrandt | 56 | Wife | — | Michigan |
| 57 | Jack Hildebrandt | 18 | Son | — | Michigan |
| 58 | Estella Bennett | 68 | Head | Assistant Librarian | Michigan |
| 59 | Charlotte Jandlyn | 76 | Sister | — | Michigan |
| 60 | Andrew Fast | 74 | Brother | — | Michigan |
| 61 | William H. Proctor | 48 | Head | Millwright | England |
| 62 | Gladys L. Proctor | 42 | Wife | — | Michigan |
| 63 | William H. Proctor | 17 | Son | — | Michigan |
| 64 | Richard L. Proctor | 12 | Son | — | Michigan |
| 65 | Thomas N. Proctor | 3 | Son | — | Michigan |
| 66 | May Parks | 65 | Head | — | Michigan |
| 67 | Rose Crane | 14 | Boarder | — | Michigan |
| 68 | William H. Williams | 37 | Head | Conservationist | Ohio |
| 69 | Madalyn B. Williams | 36 | Wife | — | Ohio |
| 70 | Edward R. Williams | 11 | Son | — | Ohio |
| 71 | Jack L. Williams | 8 | Son | — | Ohio |
| 72 | George E. Pherson | 32 | Head | Manager | Indiana |
| 73 | Florence B. Pherson | 32 | Wife | — | Michigan |
| 74 | Ron D. Fournier | 27 | Head | Sales | Michigan |
| 75 | Kathleen J. Fournier | 23 | Wife | — | Michigan |
| 76 | Duane E. Fournier | 2 | Son | — | Michigan |
| 77 | William H. Turner | 62 | Head | — | Canada-Eng |
| 78 | Gertrude Turner | 52 | Wife | — | Michigan |
| 79 | Raymond T. Salomon | 37 | Head | Salesman | Michigan |
| 80 | Helen L. Salomon | 38 | Wife | — | Illinois |
Pedigree Summary
Sarah
Gen 1 · 3 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)