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Margaret Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Story-County, Iowa
Our Model Tree links this Margaret Alexander across the 1930 and 1940 US Censuses in Story-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 6-person household.
Age 17
b. ~1923
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Story-County, Iowa |
| Surname | Alexander |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ames City |
| 1935 Residence (County) | Story |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Ames 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Joseph Alexander | Head | — | 40 | ~1900 |
| Margaret Alexander | Daughter | — | 17 | ~1923 |
| Lois Alexander | Daughter | — | 16 | ~1924 |
| Joseph Alexander | Son | — | 14 | ~1926 |
| Gregory Alexander | Son | — | 10 | ~1930 |
| Elizabeth Alexander | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Story, Iowa
Daughter, age 7
Story, Iowa · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Marguerite S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | New York |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Story-County, Iowa
Daughter, age 17
Story-County, Iowa · implied b. ~1923 — 6 household members
| Surname | Alexander |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ames City |
| 1935 Residence (County) | Story |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Margaret Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Alexander
Daughter · 1940 · age 17 · b. ~1923 · Iowa
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Sibling
Joseph Alexander
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gregory Alexander
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Alexander
Sibling · 1940 · age 16
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 — Story-County, Iowa
Open full size
1940 US Federal Census — Story-County, Iowa
Page Contents
14 people indexed on this census page (nara:1940:m-t0627-01206-00048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Alexander | 40 | Head | Chauffeur | New York |
| 2 | Elizabeth Alexander | 40 | Wife | — | Iowa |
| 3 | Margaret Alexander THIS PERSON | 17 | Daughter | — | Iowa |
| 4 | Lois Alexander | 16 | Daughter | — | Iowa |
| 5 | Joseph Jr. Alexander | 14 | Son | — | Iowa |
| 6 | Gregory Alexander | 10 | Son | — | Iowa |
| 7 | Oliver Morris | 31 | Head | Oil St. | Iowa |
| 8 | Oma Morris | 28 | Wife | Laundry | Iowa |
| 9 | Patricia Morris | 9 | Daughter | — | Iowa |
| 10 | Oley Olson | 54 | Head | Carpenter | Iowa |
| 11 | Ella Olson | 53 | Wife | Seamstress | Iowa |
| 12 | Hans Nelson | 67 | Lodger | — | Iowa |
| 13 | Ronald R. Toppenberg | 0 | Son | — | Iowa |
| 14 | Phyllis Bram | 0 | 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)