MC
Margaret Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Margaret Cooper across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Louise — first a spouse (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Cooper |
| Given Name | Margaret |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Long Creek |
| Est. Birth Year | ~1914 |
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 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Wallace Cooper | Head | — | 29 | ~1911 |
| Nancy Cooper | Daughter | — | 2 | ~1938 |
| Margaret Cooper | Spouse | — | 26 | ~1914 |
| Donald Cooper | Son | — | 4 | ~1936 |
Census Appearances
1920
Macon, Illinois
Daughter, age 5
Macon, Illinois · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Macon, Illinois
Daughter, age 16
Macon, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Spouse, age 26
Macon-County, Illinois · implied b. ~1914 — 4 household members
| Surname | Cooper |
| Given Name | Margaret |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Highest Grade | H-1 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Margaret Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Cooper (~0.92 confidence) and mother Louise Cooper (~0.92 confidence) and mother Linnie Cooper (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cooper
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Louise Cooper
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Linnie Cooper
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Cooper
Spouse · 1940 · age 26 · b. ~1914 · 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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00845-00438)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joyce Fulk | 6 | daughter | — | Illinois |
| 42 | Gloria Jean Fulk | 3 | daughter | — | Illinois |
| 43 | Wayne A. Fink | 33 | Head | Foundry | Illinois |
| 44 | Esther Fink | 32 | wife | Housekeeping | Illinois |
| 45 | Jimmy Fink | 2 | son | — | Illinois |
| 46 | Raymond Neibuhr | 32 | Head | Farmer | Illinois |
| 47 | Helen Neibuhr | 28 | wife | Housewife | Illinois |
| 48 | Doris Neibuhr | 11 | daughter | — | Illinois |
| 49 | Wilma Neibuhr | 10 | daughter | — | Illinois |
| 50 | Guy Neibuhr | 9 | son | — | Illinois |
| 51 | Robert Merris | 25 | Head | Labour | Illinois |
| 52 | Rebecca Merris | 21 | wife | Housewife | Illinois |
| 53 | Charles Merris | 1 | son | — | Illinois |
| 54 | J. M. Hunn | 80 | Head | Retired Farmer | Indiana |
| 55 | Nina E. Hunn | 78 | wife | — | Illinois |
| 56 | Ray Butt | 54 | Head | — | Illinois |
| 57 | Myrtle Butt | 51 | wife | House Work | Illinois |
| 58 | Robert Hopkins | 19 | Step-son | Labour | Wisconsin |
| 59 | Phyllis Hopkins | 12 | daughter | — | Illinois |
| 60 | L. E. Wheeler | 80 | Head | Retired Farmer | Illinois |
| 61 | Etta Wheeler | 75 | wife | — | Illinois |
| 62 | Lester Creek | 31 | Head | Farmer | Illinois |
| 63 | Helen Creek | 23 | wife | Housewife | Illinois |
| 64 | Doris Ann Creek | 4 | daughter | — | Illinois |
| 65 | Leon Creek | 1 | son | — | Illinois |
| 66 | Clarence Durbin | 27 | Head | Labour | Illinois |
| 67 | Dorothy Durbin | 26 | wife | Housewife | Illinois |
| 68 | Lois Durbin | 6 | daughter | — | Illinois |
| 69 | Wanda Durbin | 3 | daughter | — | Illinois |
| 70 | W. O. Mchardy | 68 | Head | — | Illinois |
| 71 | Mchardy | 66 | wife | House Wife | Missouri |
| 72 | Clarence Seitz | 32 | Head | Labour | Illinois |
| 73 | Ethel Seitz | 29 | wife | House Work | Illinois |
| 74 | Albert Lee Seitz | 8 | son | — | Illinois |
| 75 | Wallace Cooper | 29 | Head | Stock Room | Indiana |
| 76 | Margaret Cooper THIS PERSON | 26 | wife | — | Illinois |
| 77 | Donald Eugene Cooper | 4 | son | — | Illinois |
| 78 | Nancy Ellen Cooper | 2 | daughter | — | Illinois |
| 79 | Russell Merritt | 40 | Head | Farming | Illinois |
| 80 | Merritt | 35 | wife | Housewife | Illinois |
Pedigree Summary
Margaret
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)