JM
John Miller — 1940 US Census Record
Model Tree available1940 United States Federal Census · Keokuk-County, Iowa
Our Model Tree links this John Miller across the 1910, 1920, 1930 and 1940 US Censuses in Keokuk-County, Iowa (XGBoost, ~Confirmed), with identified parents Milo & Milo — first a head (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Keokuk-County, Iowa |
| Surname | Miller |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Harper town |
| 1935 Residence (County) | Keokuk |
| Additional Details | |
| Occupation | Produce Buyer |
| Industry | Produce House |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Produce Buyer |
| Township / Ward | Harper Town |
| Est. Birth Year | ~1904 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Betty Miller | Daughter | — | 12 | ~1928 |
| Marine Miller | Daughter | — | 16 | ~1924 |
| John Miller | Head | — | 36 | ~1904 |
| John Miller | Son | — | 2 | ~1938 |
| Milo Miller | Son | — | 14 | ~1926 |
| Mildred Miller | Spouse | — | 34 | ~1906 |
Census Appearances
1910
Keokuk, Iowa
Son, age 6
Keokuk, Iowa · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Keokuk, Iowa
Son, age 15
Keokuk, Iowa · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | John W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Keokuk, Iowa
Head, age 25
Keokuk, Iowa · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Retail Merchant |
| Industry | Groceries |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | 10 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Keokuk-County, Iowa
Head, age 36
Keokuk-County, Iowa · implied b. ~1904 — 6 household members
| Surname | Miller |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Harper town |
| 1935 Residence (County) | Keokuk |
| Occupation | Produce Buyer |
| Industry | Produce House |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 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 Miller across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Milo Miller (~0.92 confidence) and father Milo Miller (~0.92 confidence) and mother Ruby Miller (~0.92 confidence) and mother Ruby Miller (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Milo Miller
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Milo Miller
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ruby Miller
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ruby Miller
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Miller
Head · 1940 · age 36 · b. ~1904 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Keokuk-County, Iowa
Open full size
1940 US Federal Census — Keokuk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01172-00771)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph J. Olinger | 75 | Lodger | — | Illinois |
| 42 | Herbert S. Bott | 40 | Head | Maintenance Man | Illinois |
| 43 | Alberta D. Bott | 28 | Wife | — | Iowa |
| 44 | Nancy Lou Bott | 5 | Daughter | — | Iowa |
| 45 | Glenys J. Bott | 3 | Son | — | Iowa |
| 46 | Edward Newhouse | 58 | Head | House Painter | Iowa |
| 47 | Florence G. Newhouse | 31 | Wife | — | Iowa |
| 48 | Charles E. Newhouse | 12 | Son | — | Iowa |
| 49 | Freda L. Williams | 13 | Daughter | — | Iowa |
| 50 | Henry R. Williams | 11 | Step son | — | Iowa |
| 51 | Alfred R. Khinnegan | 7 | Step son | — | Iowa |
| 52 | Nicholas J. Ott | 32 | Head | Bartender | Iowa |
| 53 | Virginia C. Ott | 32 | Wife | — | Iowa |
| 54 | Paul P. Peifer | 79 | Head | Proprietor | Iowa |
| 55 | Magdalene Peifer | 63 | Wife | — | Iowa |
| 56 | John H. Peifer | 78 | Head | Proprietor | Iowa |
| 57 | Anna Peifer | 74 | Wife | — | Iowa |
| 58 | Ervin N. Peifer | 33 | Son | Quarry Engineer | Iowa |
| 59 | John Hammen | 62 | Head | Laborer | Iowa |
| 60 | Charles C. Hammen | 57 | Brother | Laborer | Iowa |
| 61 | George J. Hammen | 56 | Brother | Laborer | Iowa |
| 62 | Charles D. Clett | 60 | Head | Laborer | Iowa |
| 63 | Anna Clett | 60 | Wife | — | Iowa |
| 64 | Elizabeth Clett | 23 | Daughter | — | Iowa |
| 65 | Kathryn A. Claghen | 57 | Head | Post Master | Iowa |
| 66 | Charles H. Millner | 53 | Head | Carpenter | Iowa |
| 67 | Nicholas Sondag | 68 | Head | — | Iowa |
| 68 | Lena Sondag | 63 | Wife | — | Iowa |
| 69 | Everett S. Sondag | 34 | Son | Proprietor | Iowa |
| 70 | John F. Crooks | 60 | Head | Laborer | Iowa |
| 71 | Helen J. Crooks | 53 | Wife | Telephone Operator | Iowa |
| 72 | John J. Crooks | 29 | Son | — | Iowa |
| 73 | Cloyce D. Crooks | 24 | Son | Clerk | Iowa |
| 74 | Loretta M. Claghen | 62 | Sister in law | — | Iowa |
| 75 | John W. Miller THIS PERSON | 36 | Head | Produce Buyer | Iowa |
| 76 | Mildred M. Miller | 34 | Wife | — | Iowa |
| 77 | Marine D. Miller | 16 | Daughter | — | Iowa |
| 78 | Milo D. Miller | 14 | Son | — | Iowa |
| 79 | Betty J. Miller | 12 | Daughter | — | Iowa |
| 80 | John Robert Miller | 2 | Son | — | Iowa |
Pedigree Summary
John
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)