MD
Mary Downey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dallas-County, Iowa
Our Model Tree links this Mary Downey across the 1930 and 1940 US Censuses in Dallas-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dallas-County, Iowa |
| Surname | Downey |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Lincoln Twp. |
| 1935 Residence (County) | Dallas |
| Additional Details | |
| Occupation | Teacher |
| Industry | Com school |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 540 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Teacher |
| Township / Ward | Lincoln Twp |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Nancy Downey | Daughter | — | 11 | ~1929 |
| M Downey | Head | — | 58 | ~1882 |
| C Downey | Son | — | 19 | ~1921 |
| Mary Downey | Daughter | — | 20 | ~1920 |
| Nora Downey | Spouse | — | 49 | ~1891 |
| Elizabeth Downey | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Dallas, Iowa
Daughter, age 10
Dallas, Iowa · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Downey |
| Given Name | Mary F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Dallas-County, Iowa
Daughter, age 20
Dallas-County, Iowa · implied b. ~1920 — 6 household members
| Surname | Downey |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Lincoln Twp. |
| 1935 Residence (County) | Dallas |
| Occupation | Teacher |
| Industry | Com school |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 540 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Downey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Downey
Daughter · 1940 · age 20 · b. ~1920 · Iowa
★ You are viewing this record
Sibling
C Downey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Downey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Downey
Sibling · 1940 · age 22
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 — Dallas-County, Iowa
Open full size
1940 US Federal Census — Dallas-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01153-00305)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M A Downey | 58 | Head | Farmer | Wisconsin |
| 2 | Nora Downey | 49 | Wife | — | Wisconsin |
| 3 | Elizabeth Downey | 22 | Daughter | Teacher | Wisconsin |
| 4 | Mary J Downey THIS PERSON | 20 | Daughter | Teacher | Wisconsin |
| 5 | C A Downey | 19 | Son | Farmer | Wisconsin |
| 6 | Nancy Downey | 11 | Daughter | — | Wisconsin |
| 7 | Robert A Smith | 34 | Head | Farmer | Iowa |
| 8 | Helen E Smith | 35 | Wife | — | Iowa |
| 9 | Lois May Smith | 10 | Daughter | — | Iowa |
| 10 | Alta Martha Smith | 8 | Daughter | — | Iowa |
| 11 | Raymond M Smith | 6 | Son | — | Iowa |
| 12 | Clara L Smith | 68 | Head | — | Illinois |
| 13 | James Wilkinson | 57 | Head | Farmer | Illinois |
| 14 | Ada Wilkinson | 48 | Wife | — | Missouri |
| 15 | Willard Nickerson | 22 | Head | Farmer | Iowa |
| 16 | E J Shelby | 51 | Head | Farmer | Iowa |
| 17 | Laura May Shelby | 52 | Wife | — | Iowa |
| 18 | John Rote | 59 | Head | Farmer | Iowa |
| 19 | Ella Rote | 59 | Wife | — | Iowa |
| 20 | Anna Booth | 37 | Daughter | House Maid | Iowa |
| 21 | Jean Booth Rote | 20 | Son | Labour | Iowa |
| 22 | Dale Booth | 11 | Grandson | — | Iowa |
| 23 | Jean Booth | 3 | Grandson | — | Iowa |
| 24 | Aaron Mckay | 42 | Head | Farmer | Illinois |
| 25 | Faith Mckay | 41 | Wife | — | Iowa |
| 26 | H Annie Mckay | 16 | Daughter | — | Minnesota |
| 27 | Glenn Mckay | 10 | Son | — | Iowa |
| 28 | Gene Bidnour | 21 | Hired hand | Labour | Iowa |
| 29 | Kenneth Merchant | 29 | Head | Labour | Iowa |
| 30 | Dorothy Merchant | 27 | Wife | Labour | Iowa |
| 31 | Ramona Merchant | 9 | Daughter | — | Iowa |
| 32 | Phyllis Merchant | 4 | Daughter | — | Iowa |
| 33 | Charlene Merchant | 3 | Daughter | — | Iowa |
| 34 | Erric C Perrigo | 71 | Head | — | Ohio |
| 35 | Marion Perrigo | 49 | Son | Farmer | Iowa |
| 36 | Gail H Emmons | 25 | Head | Labour | Iowa |
| 37 | Irma Emmons | 20 | Wife | — | Iowa |
| 38 | Teddy Emmons | 2 | Daughter | — | Iowa |
| 39 | Rida Emmons | 1 | Daughter | — | Iowa |
| 40 | E R Reynolds | 46 | Head | Farmer | Iowa |
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)