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John Stevens — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this John Stevens across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Jennie & Ralph — first a son (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Stevens |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Annapolis |
| Additional Details | |
| Occupation | officer (comd) |
| Industry | U. S. Navy |
| Class of Worker | GW |
| Income (1939) | 112 |
| Highest Grade | C-5 |
| 1935 Residence | Maryland |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Officer |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jeanne Stevens | Head | — | 49 | ~1891 |
| John Stevens | Son | — | 25 | ~1915 |
| Ralph Stevens | Son | — | 24 | ~1916 |
Census Appearances
1920
Polk, Iowa
Son, age 5
Polk, Iowa · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Stevens |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 15
Polk, Iowa · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Stevens |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 25
Polk-County, Iowa · implied b. ~1915 — 3 household members
| Surname | Stevens |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Annapolis |
| Occupation | officer (comd) |
| Industry | U. S. Navy |
| Class of Worker | GW |
| Income (1939) | 112 |
| Highest Grade | C-5 |
| 1935 Residence | Maryland |
| 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 John Stevens across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Jennie Stevens (~0.92 confidence) and father Ralph Stevens (~0.92 confidence) and mother Edyne Stevens (~0.92 confidence) and mother Jeanne Stevens (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Jennie Stevens
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
Ralph Stevens
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Edyne Stevens
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Jeanne Stevens
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Stevens
Son · 1940 · age 25 · b. ~1915 · Iowa
★ You are viewing this record
Sibling
Ralph Stevens
Sibling · 1940 · age 24
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-t0627-01195-00886)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | L. C. Fowler | 25 | Head | Salesman | Iowa |
| 2 | Mrs. L. C. Fowler | 25 | Wife | Cashier | Iowa |
| 3 | Jeanne F. Stevens | 49 | Head | Music Teacher | Missouri |
| 4 | John F. Stevens THIS PERSON | 25 | Son | Officer (Comd) | Iowa |
| 5 | Ralph P. Jr. Stevens | 24 | Son | Officer (Comd) | Iowa |
| 6 | Eugene R. Morgan | 39 | Head | Custodian | Iowa |
| 7 | Berta Morgan | 39 | Wife | — | Iowa |
| 8 | Phyllis J. Morgan | 11 | Daughter | — | Iowa |
| 9 | Charles Morgan | 4 | Son | — | Iowa |
| 10 | Marilyn Morgan | 3 | Daughter | — | Iowa |
| 11 | Ben Reed | 39 | Head | Truck Driver | Iowa |
| 12 | Olive Reed | 38 | Wife | Attendant | Iowa |
| 13 | Dean Reed | 17 | Son | Attendant | Iowa |
| 14 | Jean Reed | 13 | Daughter | — | Iowa |
| 15 | Donald Reed | 6 | Son | — | Iowa |
| 16 | Harry Waterus | 46 | Head | Proprietor | Holland |
| 17 | Hattie Waterus | 59 | Wife | — | Iowa |
| 18 | Wilford (Ab) Newbanks | 48 | Head | Freight Handler | Illinois |
| 19 | Ethel Newbanks | 50 | Wife | Presser Machine | Arkansas |
| 20 | Doris Newbanks | 18 | Daughter | Typist | Iowa |
| 21 | Fred Peterson | 49 | Head | Finisher | Iowa |
| 22 | Louise Peterson | 17 | Wife | — | Iowa |
| 23 | Alfred W. Schuessler | 22 | Head | Commercial Artist | Illinois |
| 24 | Laura A. W. Schuessler | 22 | Wife | Commercial Artist | Illinois |
| 25 | Suzanne Schuessler | 0 | Daughter | — | Iowa |
| 26 | William F. Bates | 30 | Head | Shipping Clerk | Iowa |
| 27 | Mary Bates | 32 | Wife | — | Yugoslavia |
| 28 | Beverly Ann Bates | 5 | Daughter | — | Iowa |
| 29 | Peter J. Mccormick | 51 | Head | Engineer (Loco) | Iowa |
| 30 | Genevieve Mccormick | 49 | Wife | — | Iowa |
| 31 | Ralph E. Devolt | 45 | Head | Proprietor | Missouri |
| 32 | Ara Devolt | 43 | Wife | Waitress | Missouri |
| 33 | John (Ab) Devolt | 24 | Son | Attendant | Missouri |
| 34 | Vera Devolt | 20 | Daughter | Filler | Missouri |
| 35 | Louise Devolt | 16 | Daughter | Page | Missouri |
| 36 | Gail Devolt | 14 | Son | — | Missouri |
| 37 | Charles J. Porter | 50 | Head | Auditor | Illinois |
| 38 | Martha E. Porter | 51 | Wife | — | Illinois |
| 39 | Alfonzo E. Reynolds | 42 | Head | Printer | Nebraska |
| 40 | Eleanor Reynolds | 42 | Wife | — | New York |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)