MM
Mary Mckinney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Florida
Our Model Tree links this Mary Mckinney across the 1920, 1930 and 1940 US Censuses in Polk-County, Florida (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 5-person household.
Age 46
b. ~1894
Female
Spouse
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Florida |
| Surname | McKinney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Rural |
| 1935 Residence (County) | Polk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Sectionizer |
| Industry | Citrus Cannery |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 496 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Occupation | Sectionizer |
| Township / Ward | Rural |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Mckinney | Head | — | 50 | ~1890 |
| Elizabeth Mckinney | Daughter | — | 15 | ~1925 |
| John Mckinney | Son | — | 16 | ~1924 |
| Mary Mckinney | Daughter | — | 26 | ~1914 |
| Mary Mckinney | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Polk, Florida
Spouse, age 27
Polk, Florida · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKinney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1904 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1930
Polk, Florida
Other, age 37
Polk, Florida · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKinney |
| Given Name | Mary M. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 19 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Polk-County, Florida
Spouse, age 46
Polk-County, Florida · implied b. ~1894 — 5 household members
| Surname | McKinney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Rural |
| 1935 Residence (County) | Polk |
| Naturalization Status | Naturalized |
| Occupation | Sectionizer |
| Industry | Citrus Cannery |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 496 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Mary Mckinney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckinney
Spouse · 1940 · age 46 · b. ~1894 · Florida
★ 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 — Polk-County, Florida
Open full size
1940 US Federal Census — Polk-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00613-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marvin Adams | 5 | Son | — | Alabama |
| 42 | Jesse Luttrell | 18 | Brother in law | Peeler | Alabama |
| 43 | Cochran | None | — | — | — |
| 44 | James Neeley | 23 | Head | Peeler | Alabama |
| 45 | Robert Neeley | 20 | Partner | Peeler | Arkansas |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | Charles W. Baker | 51 | Head | Salesman | Missouri |
| 49 | Eva Baker | 47 | Wife | Sectionizer | Illinois |
| 50 | Sherman Starkey | 30 | Head | Peeler | Illinois |
| 51 | J. E. Cochran | 33 | Head | Operator | Georgia |
| 52 | Frances Cochran | 35 | Wife | — | Tennessee |
| 53 | Clyde Mott | 16 | Nephew | — | Tennessee |
| 54 | Dan L. Jr. Mathis | 29 | Head | Route Man | Florida |
| 55 | Mamie Mathis | 31 | Wife | Packer | Alabama |
| 56 | Earl Mathis | 10 | Son | — | Florida |
| 57 | Hannah Howard | 87 | Head | — | Indiana |
| 58 | Frank Howard | 66 | Son | Laborer | Indiana |
| 59 | Earl Williams | 37 | Head | Cook | Georgia |
| 60 | Erdina Redd | 35 | Lodger | Citrus Cannery | Georgia |
| 61 | Lilly Redd | 22 | Lodger's wife | — | — |
| 62 | — | None | — | — | — |
| 63 | Red Williams | 40 | Head | Cook | Texas |
| 64 | Penny Williams | 35 | Wife | Packer | Georgia |
| 65 | S. D. Long | 40 | Head | Operator | S. Carolina |
| 66 | Ruth Long | 34 | Wife | Seamstress | Georgia |
| 67 | Betty Long | 13 | Daughter | — | Florida |
| 68 | Joe Long | 7 | Son | — | Florida |
| 69 | Nancy Long | 5 | Daughter | — | Florida |
| 70 | W. D. Coleman | 64 | Head | Proprietor | Florida |
| 71 | M. B. Coleman | 27 | Son | Peeler | Florida |
| 72 | Alida Coleman | 25 | Daughter in law | — | Georgia |
| 73 | John A. Mckinney | 50 | Head | Building Contr. | Alabama |
| 74 | Mary Mckinney THIS PERSON | 46 | Wife | Sectionizer | Germany |
| 75 | Mary Alice Mckinney | 26 | Daughter | Sectionizer | Florida |
| 76 | John A. Jr. Mckinney | 16 | Son | Clerk | Florida |
| 77 | Elizabeth Mckinney | 15 | Daughter | — | Florida |
| 78 | Rollin H. Rizer | 27 | Head | Laborer | Georgia |
| 79 | Frances A. Rizer | 24 | Wife | — | Florida |
| 80 | Rollin H. Jr. Rizer | 3 | Son | — | Florida |
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)