MM
Mary Mckenzie — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sedgwick-County, Kansas
Our Model Tree links this Mary Mckenzie across the 1930 and 1940 US Censuses in Sedgwick-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sedgwick-County, Kansas |
| Surname | McKenzie |
| Given Name | Mary Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wichita City |
| 1935 Residence (County) | Sedgwick |
| Additional Details | |
| Occupation | Cashier |
| Industry | Wholesale Books |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 640 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Cashier |
| Township / Ward | Wichita City |
| Est. Birth Year | ~1919 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Mckenzie | Daughter | — | 16 | ~1924 |
| Billie Mckenzie | Son | — | 12 | ~1928 |
| Mary Mckenzie | Daughter | — | 21 | ~1919 |
| Lillian Mckenzie | Spouse | — | 49 | ~1891 |
| Ruth Mckenzie | Daughter | — | 7 | ~1933 |
| Margaret Mckenzie | Daughter | — | 19 | ~1921 |
| Donald Mckenzie | Son | — | 14 | ~1926 |
| John Mckenzie | Son | — | 11 | ~1929 |
| Rita Mckenzie | Daughter | — | 15 | ~1925 |
| Donald Mckenzie | Head | — | 50 | ~1890 |
Census Appearances
1930
Sedgwick, Kansas
Daughter, age 11
Sedgwick, Kansas · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sedgwick-County, Kansas
Daughter, age 21
Sedgwick-County, Kansas · implied b. ~1919 — 10 household members
| Surname | McKenzie |
| Given Name | Mary Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wichita City |
| 1935 Residence (County) | Sedgwick |
| Occupation | Cashier |
| Industry | Wholesale Books |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 640 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Mary Mckenzie across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckenzie
Daughter · 1940 · age 21 · b. ~1919 · Kansas
★ You are viewing this record
Sibling
John Mckenzie
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mckenzie
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mckenzie
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mckenzie
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billie Mckenzie
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mckenzie
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Mckenzie
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sedgwick-County, Kansas
Open full size
1940 US Federal Census — Sedgwick-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01274-00139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kathleen Smarsh | 16 | Daughter | — | Kansas |
| 2 | Medusa Jecke | 81 | Mother in law | — | Germany |
| 3 | — | None | — | — | — |
| 4 | Floyd F. Lyle | 55 | Head | Patrolman | Illinois |
| 5 | Flossie Lyle | 51 | Wife | — | Kansas |
| 6 | Joseph B. Kane | 26 | Head | Salesman | Kansas |
| 7 | Helen Kane | 27 | Wife | — | Kansas |
| 8 | Aldo Jones | 64 | Head | Laborer | Indiana |
| 9 | Sylvia Jones | 60 | Wife | — | Kansas |
| 10 | John E. Gorman | 59 | Head | — | Kansas |
| 11 | M. G. Cox | 54 | Head | Collector | North Carolina |
| 12 | Willard Roach | 23 | Head | Salesman | Kansas |
| 13 | Zeta Roach | 21 | Wife | Clerical | Kansas |
| 14 | Mable Dadsman | 58 | Head | Saleslady | Ohio |
| 15 | Mary Lee Parker | 63 | Lodger | — | Missouri |
| 16 | Donald F. Mckenzie | 50 | Head | Refurbisher | Kansas |
| 17 | Lillian M. Mckenzie | 49 | Wife | Assessor | Illinois |
| 18 | Mary Jean Mckenzie THIS PERSON | 21 | Daughter | Cashier | Illinois |
| 19 | Margaret Ann Mckenzie | 19 | Daughter | Student | Kansas |
| 20 | Betty Jane Mckenzie | 16 | Daughter | Student | Kansas |
| 21 | Rita Catherine Mckenzie | 15 | Daughter | — | Kansas |
| 22 | Donald Jr. Mckenzie | 14 | Son | Car Hop | Kansas |
| 23 | Billie Mckenzie | 12 | Son | — | Kansas |
| 24 | John Tom Mckenzie | 11 | Son | — | Kansas |
| 25 | Ruth P. Mckenzie | 7 | Daughter | — | Kansas |
| 26 | Arthur W. Lamb | 68 | Head | Carpenter | Indiana |
| 27 | Cora A. Lamb | 68 | Wife | Seamstress | Iowa |
| 28 | E. David Pruitt | 22 | Head | Laborer | Iowa |
| 29 | Pearl Pruitt | 21 | Wife | — | Kansas |
| 30 | D. Leon Pruitt | 0 | Son | — | Idaho |
| 31 | James A. Bales | 22 | Head | — | Iowa |
| 32 | Fred Mckenzie | 56 | Head | Brakeman | Texas |
| 33 | Della Mckenzie | 48 | Wife | — | Illinois |
| 34 | Hugh Mckenzie | 15 | Son | — | Oklahoma |
| 35 | — | None | — | — | — |
| 36 | Jack F. Snyder | 34 | Head | Salesman | Oklahoma |
| 37 | Anna M. Snyder | 34 | Wife | Bookkeeper | Kansas |
| 38 | Inez Baker | 61 | Head | Laundress | Kansas |
| 39 | John Harding | 29 | Head | Laborer | Kansas |
| 40 | Rosella Harding | 26 | Wife | Egg Packer | Kansas |
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)