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Hazel Allen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monona-County, Iowa
Our Model Tree links this Hazel Allen across the 1930 and 1940 US Censuses in Monona-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Monona-County, Iowa |
| Surname | Allen |
| Given Name | Hazel M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Monona |
| Additional Details | |
| Occupation | Housework |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 49 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Housework |
| Township / Ward | Onawa |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Hazel | Age | Birth yr |
|---|---|---|---|---|
| George Allen | Son | — | 10 | ~1930 |
| Amy Allen | Daughter | — | 12 | ~1928 |
| William Allen | Head | — | 65 | ~1875 |
| Bertha Allen | Spouse | — | 64 | ~1876 |
| Hazel Allen | Daughter | — | 15 | ~1925 |
| James Allen | Son | — | 18 | ~1922 |
| Thaddeus Allen | Son | — | 13 | ~1927 |
| Gerald Allen | Son | — | 16 | ~1924 |
Census Appearances
1930
Monona, Iowa
Daughter, age 5
Monona, Iowa · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Hazel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Monona-County, Iowa
Daughter, age 15
Monona-County, Iowa · implied b. ~1925 — 8 household members
| Surname | Allen |
| Given Name | Hazel M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Monona |
| Occupation | Housework |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 5 |
| Income (1939) | 49 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| 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 Hazel Allen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Hazel Allen
Daughter · 1940 · age 15 · b. ~1925 · Iowa
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Sibling
George Allen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Allen
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Allen
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Amy Allen
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thaddeus Allen
Sibling · 1940 · age 13
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 — Monona-County, Iowa
Open full size
1940 US Federal Census — Monona-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01184-00389)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Luke B. Gray | 78 | Lodger | — | Iowa |
| 42 | Guy J. Hall | 36 | Head | Meat Weaver | Iowa |
| 43 | Madge R. Hall | 33 | Wife | Waitress | Iowa |
| 44 | Blanche R. Hall | 15 | Daughter | — | Iowa |
| 45 | Frank Cox | 56 | Head | Painter | Iowa |
| 46 | Alice C. Cox | 54 | Wife | — | Iowa |
| 47 | Harvey E. Pitta | 33 | Son-in-law | Automobile Mechanic | Iowa |
| 48 | Beulah M. Pitta | 32 | Daughter | — | Nebraska |
| 49 | Marie L. Rock | 30 | Head | — | Iowa |
| 50 | Danny Lee Rock | 6 | Son | — | Iowa |
| 51 | Delaine B. Rock | 5 | Son | — | Iowa |
| 52 | Allan R. Rock | 3 | Son | — | Iowa |
| 53 | Clarence R. Doty | 29 | Head | Station Operator | Iowa |
| 54 | Neale Ed. Jones | 47 | Head | Signal Maintainer | Illinois |
| 55 | Mabel Jones | 43 | Wife | — | Iowa |
| 56 | Paul A. Jones | 19 | Son | Signal Helper | Iowa |
| 57 | Robert M. Jones | 18 | Son | — | Iowa |
| 58 | Ruby G. Farrell | 26 | Daughter | Nurse | Iowa |
| 59 | Jacquline A. Farrell | 2 | G. Daughter | — | California |
| 60 | Barbara Jean Farrell | 0 | G. Daughter | — | Iowa |
| 61 | Hershey Wood | 47 | Head | Laborer | Iowa |
| 62 | Belle B. Wood | 32 | Wife | — | Iowa |
| 63 | David Barber Wood | 6 | Son | — | Iowa |
| 64 | Deanna Lee Wood | 5 | Daughter | — | Iowa |
| 65 | Carl Clark | 51 | Head | Clerk | Iowa |
| 66 | Anna Clark | 49 | Wife | — | Iowa |
| 67 | J. L. Pearce | 58 | Head | Laborer | Iowa |
| 68 | William Allen | 65 | Head | — | Iowa |
| 69 | Bertha M. Allen | 64 | Wife | Janitress | Iowa |
| 70 | James C. Allen | 18 | Son | Laborer | Iowa |
| 71 | Gerald D. Allen | 16 | Son | Laborer | Nebraska |
| 72 | Hazel M. Allen THIS PERSON | 15 | Daughter | Housework | Iowa |
| 73 | Thaddeus Allen | 13 | Son | — | Iowa |
| 74 | Amy A. Allen | 12 | Daughter | — | Iowa |
| 75 | George W. Allen | 10 | Son | — | Iowa |
| 76 | Richard W. Tiermann | 38 | Head | Laborer | Germany |
| 77 | Zella M. Tiermann | 33 | Wife | — | Iowa |
| 78 | Delores M. Tiermann | 13 | Daughter | — | Iowa |
| 79 | Robert J. Tiermann | 10 | Son | — | Iowa |
| 80 | Ollie Earl Tiermann | 4 | Son | — | 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)