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John Keller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Keller across the 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Keller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1930 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Jeannette Keller | Daughter | — | 9 | ~1931 |
| Rosemary Keller | Daughter | — | 7 | ~1933 |
| Leo Keller | Head | — | 40 | ~1900 |
| Mark Keller | Son | — | 4 | ~1936 |
| Joseph Keller | Son | — | 14 | ~1926 |
| John Keller | Son | — | 10 | ~1930 |
| Richard Keller | Son | — | 12 | ~1928 |
| Margaret Keller | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Woodbury, Iowa
Son, age
Woodbury, Iowa · implied b. ~1930 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Nebraska |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Son, age 10
Woodbury-County, Iowa · implied b. ~1930 — 8 household members
| Surname | Keller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Highest Grade | No 4 |
| 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 John Keller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Keller
Son · 1940 · age 10 · b. ~1930 · Iowa
★ You are viewing this record
Sibling
Jeannette Keller
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosemary Keller
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Keller
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mark Keller
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Keller
Sibling · 1940 · age 12
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 — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01215-00487)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James B. Bauer | 57 | Head | Partner Manager | South Dakota |
| 42 | Permelia Bauer | 52 | Wife | — | Iowa |
| 43 | Eileen Bauer | 27 | Daughter | Stenographer | Iowa |
| 44 | Raymond Bauer | 22 | Son | Butcher | Iowa |
| 45 | Kenneth Bauer | 19 | Son | Salesman | Iowa |
| 46 | Odileanna Bauer | 17 | Daughter | Saleslady | Iowa |
| 47 | Charles Bauer | 15 | Son | Salesman | Iowa |
| 48 | Francis Bauer | 10 | Son | — | Iowa |
| 49 | Alfred D. Adams | 66 | Brother-in-law | — | Massachusetts |
| 50 | James Pridie | 45 | Head | Shipper | Iowa |
| 51 | Mary D. Pridie | 36 | Wife | — | Nebraska |
| 52 | James Pridie | 12 | Son | — | Iowa |
| 53 | Lawrence Pridie | 10 | Son | — | Iowa |
| 54 | Raymond Pridie | 7 | Son | — | Iowa |
| 55 | Patrick Pridie | 2 | Son | — | Iowa |
| 56 | Mary D. Guggen | 55 | Housekeeper | Housekeeper | Minnesota |
| 57 | Elmer L. Betts | 45 | Head | Trucker | Iowa |
| 58 | Tiffany D. Betts | 40 | Wife | — | Iowa |
| 59 | Ray Betts | 22 | Son | — | Iowa |
| 60 | Lucille Betts | 13 | Daughter | — | Missouri |
| 61 | Arthur J. Betts | 10 | Son | — | Missouri |
| 63 | Leo Keller | 40 | Head | Manager | Indiana |
| 64 | Margaret D. Keller | 42 | Wife | — | Nebraska |
| 65 | Joseph Keller | 14 | Son | Caddy | Iowa |
| 66 | Richard Keller | 12 | Son | — | Iowa |
| 67 | John Keller THIS PERSON | 10 | Son | — | Iowa |
| 68 | Jeannette Keller | 9 | Daughter | — | Iowa |
| 69 | Rosemary Keller | 7 | Daughter | — | Iowa |
| 70 | Mark Keller | 4 | Son | — | Iowa |
| 71 | Mike Gabel | 81 | Head | — | Wisconsin |
| 72 | Amelia Gabel | 74 | Wife | — | Iowa |
| 73 | Lucille Ferrin | 37 | Daughter | — | Iowa |
| 74 | Bert Thomas | 42 | Son-in-law | Mechanic | Nebraska |
| 75 | Thomas Jr. Thomas | 18 | Grandson | News Hawker | Iowa |
| 76 | Robert V. Thomas | 17 | Grandson | Salesman | Iowa |
| 77 | Douglas Thomas | 15 | Grandson | Caddy | Iowa |
| 78 | Phyllis Thomas | 7 | Granddaughter | — | Iowa |
| 79 | Marilynn Thomas | 9 | Granddaughter | — | Iowa |
| 80 | Audrey Thomas | 7 | Granddaughter | — | 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)