RS
Robert Simmons — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Robert Simmons across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 14-person household.
Age 17
b. ~1923
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Simmons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | New worker |
| Hours Worked | 12 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | New Worker |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1923 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Barbara Simmons | Daughter | — | 13 | ~1927 |
| Mamie Simmons | Daughter | — | 8 | ~1932 |
| Doris Simmons | Daughter | — | 4 | ~1936 |
| Ruth Simmons | Daughter | — | 10 | ~1930 |
| Marion Simmons | Daughter | — | 18 | ~1922 |
| Charlotte Simmons | Daughter | — | 9 | ~1931 |
| William Simmons | Head | — | 43 | ~1897 |
| Harold Simmons | Son | — | 12 | ~1928 |
| Elwood Simmons | Son | — | 15 | ~1925 |
| William Simmons | Son | — | 20 | ~1920 |
| Donald Simmons | Son | — | 5 | ~1935 |
| Garry Simmons | Son | — | 2 | ~1938 |
| Robert Simmons | Son | — | 17 | ~1923 |
| Louise Simmons | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Polk, Iowa
Son, age 7
Polk, Iowa · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simmons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 17
Polk-County, Iowa · implied b. ~1923 — 14 household members
| Surname | Simmons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | New worker |
| Hours Worked | 12 |
| Highest Grade | Hs 3 |
| 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 Robert Simmons across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Simmons
Son · 1940 · age 17 · b. ~1923 · Iowa
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Sibling
Barbara Simmons
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elwood Simmons
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Simmons
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Simmons
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Simmons
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Simmons
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Simmons
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Simmons
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Garry Simmons
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Simmons
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Simmons
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-t0627-01196-00727)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Wessel | 0 | Son | — | Iowa |
| 2 | Atis Bunch | 57 | Head | Carpenter | Missouri |
| 3 | Alberta M. Bunch | 38 | Wife | — | Iowa |
| 4 | Marion Malloy | 25 | Daughter | — | Iowa |
| 5 | Alice Malloy | 23 | Daughter | — | Iowa |
| 6 | Robert Malloy | 22 | Son | — | Iowa |
| 7 | Beulah Wellinger | 56 | Head | Maid | Kentucky |
| 8 | Richard Waters | 24 | Lodger | — | Missouri |
| 9 | Bertha Lightner | 39 | Head | Maid | No Carolina |
| 10 | William Lightner | 14 | Son | Laborer | Iowa |
| 11 | Leonard Tillman | 43 | Head | Welder | Missouri |
| 12 | Hettie Tillman | 36 | Wife | — | Missouri |
| 13 | Alice Hedge | 65 | Head | — | No Carolina |
| 14 | William Simmons | 43 | Head | Car Washer | Illinois |
| 15 | Louise Simmons | 42 | Wife | — | Alabama |
| 16 | William Jr. Simmons | 20 | Son | Car Washer | Iowa |
| 17 | Marion Simmons | 18 | Daughter | New Worker | Iowa |
| 18 | Robert Simmons THIS PERSON | 17 | Son | New Worker | Iowa |
| 19 | Elwood Simmons | 15 | Son | — | Iowa |
| 20 | Barbara Simmons | 13 | Daughter | — | Iowa |
| 21 | Harold Simmons | 12 | Son | — | Illinois |
| 22 | Ruth Simmons | 10 | Daughter | — | Iowa |
| 23 | Charlotte Simmons | 9 | Daughter | — | Iowa |
| 24 | Mamie Simmons | 8 | Daughter | — | Iowa |
| 25 | Donald Simmons | 5 | Son | — | Iowa |
| 26 | Doris Simmons | 4 | Daughter | — | Iowa |
| 27 | Garry Simmons | 2 | Son | — | Iowa |
| 28 | Perle Brewer | 51 | Head | Porter | Kansas |
| 29 | Essie Brewer | 51 | Wife | — | Kansas |
| 30 | Heywood Brewer | 25 | Son | Porter | Iowa |
| 31 | Harriett Brewer | 20 | Daughter | Maid | Iowa |
| 32 | Madeline Brewer | 19 | Daughter | Maid | Iowa |
| 33 | Kenneth Brewer | 16 | Son | New Worker | Iowa |
| 34 | Anna Brewer | 15 | Daughter | — | Iowa |
| 35 | John Brewer | 12 | Son | — | Iowa |
| 36 | Anna White | 63 | Head | — | Missouri |
| 37 | — | None | — | — | — |
| 38 | Joseph Schuler | 49 | Head | Clerk | Iowa |
| 39 | Eunice Schuler | 44 | Wife | — | Iowa |
| 40 | Jack Schuler | 11 | Son | — | Iowa |
Related Census Records
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)