MJ
Mary Jenkins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Mary Jenkins across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Jenkins |
| Given Name | Mary I. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines |
| Est. Birth Year | ~1928 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jenkins | Daughter | — | 12 | ~1928 |
| Betty Jenkins | Daughter | — | 8 | ~1932 |
| Evelyn Jenkins | Daughter | — | 14 | ~1926 |
| Shirley Jenkins | Daughter | — | 1 | ~1939 |
| Anna Jenkins | Daughter | — | 18 | ~1922 |
| Doris Jenkins | Daughter | — | 5 | ~1935 |
| Ruby Jenkins | Daughter | — | 10 | ~1930 |
| James Jenkins | Head | — | 36 | ~1904 |
| James Jenkins | Son | — | 3 | ~1937 |
| Larry Jenkins | Son | — | 5 | ~1935 |
| Loretta Jenkins | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Polk, Iowa
Daughter, age 2
Polk, Iowa · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 12
Polk-County, Iowa · implied b. ~1928 — 11 household members
| Surname | Jenkins |
| Given Name | Mary I. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Jenkins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jenkins
Daughter · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Anna Jenkins
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Jenkins
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Jenkins
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Jenkins
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Jenkins
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Jenkins
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Jenkins
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Larry Jenkins
Sibling · 1940 · age 5
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01192-00198)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Taube | 32 | Head | Tinner | Iowa |
| 2 | Beula R. Taube | 22 | Wife | — | Iowa |
| 3 | Bobby D. Taube | 1 | Son | — | Iowa |
| 4 | Frank M. Boyd | 34 | Head | Tinner | Iowa |
| 5 | Dorothy A. Boyd | 31 | Wife | — | So. Dak. |
| 6 | Peggy L. Boyd | 12 | Daughter | — | Iowa |
| 7 | Jack M. Boyd | 5 | Son | — | Iowa |
| 8 | Jess E. Lasher | 56 | Head | Labor | Iowa |
| 9 | Ruth A. Lasher | 54 | Wife | — | Iowa |
| 10 | John E. Lasher | 19 | Son | New Worker | Iowa |
| 11 | Leo W. Lasher | 18 | Son | New Worker | Iowa |
| 12 | Maxine L. Lasher | 14 | Daughter | — | Iowa |
| 13 | Melvin C. Lasher | 13 | Son | — | Iowa |
| 14 | Ben E. Fisher | 35 | Head | Night Man | Iowa |
| 15 | Rebecca D. Fisher | 36 | Wife | — | Mo. |
| 16 | Nancy L. Fisher | 6 | Daughter | — | Iowa |
| 17 | Ennina V. Fisher | 5 | Daughter | — | Iowa |
| 18 | Harriett G. Fisher | 3 | Daughter | — | Iowa |
| 19 | Ben E. Jr. Fisher | 1 | Son | — | Iowa |
| 20 | Tim Burgess | 56 | Head | — | Iowa |
| 21 | Sarah Burgess | 48 | Wife | — | Iowa |
| 22 | Earl Schamerhorn | 22 | Head | Labor | Iowa |
| 23 | Hazel Schamerhorn | 30 | Wife | Seamstress | Iowa |
| 24 | Dorothy C. Schamerhorn | 2 | Daughter | — | Iowa |
| 25 | Jack M. Schamerhorn | 0 | Son | — | Iowa |
| 26 | Gertrude Schamerhorn | 63 | Mother | — | England |
| 27 | James H. Jenkins | 36 | Head | — | Alabama |
| 28 | Loretta Jenkins | 37 | Wife | — | Iowa |
| 29 | Anna Jenkins | 18 | Daughter | — | Iowa |
| 30 | Evelyn L. Jenkins | 14 | Daughter | — | Iowa |
| 31 | Mary I. Jenkins THIS PERSON | 12 | Daughter | — | Iowa |
| 32 | Ruby M. Jenkins | 10 | Daughter | — | Iowa |
| 33 | Betty J. Jenkins | 8 | Daughter | — | Iowa |
| 34 | Doris R. Jenkins | 5 | Daughter | — | Iowa |
| 35 | Larry L. Jenkins | 5 | Son | — | Iowa |
| 36 | James E. Jenkins | 3 | Son | — | Iowa |
| 37 | Shirley M. Jenkins | 1 | Daughter | — | Iowa |
| 38 | Walter Carney | 34 | Head | Labor | Iowa |
| 39 | Katie Carney | 37 | Wife | — | Iowa |
| 40 | Lenore Carney | 15 | Daughter | — | 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)