JC
John Collier — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mills-County, Iowa
Our Model Tree links this John Collier across the 1930 and 1940 US Censuses in Mills-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 6-person household.
Age 16
b. ~1924
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mills-County, Iowa |
| Surname | Collier |
| Given Name | John W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mills |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Silver Creek Township |
| Est. Birth Year | ~1924 |
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 |
|---|---|---|---|---|
| John Collier | Son | — | 16 | ~1924 |
| Pearl Collier | Daughter | — | 12 | ~1928 |
| Frances Collier | Daughter | — | 14 | ~1926 |
| James Collier | Son | — | 10 | ~1930 |
| Palmer Collier | Head | — | 44 | ~1896 |
| Roxie Collier | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Mills, Iowa
Son, age 6
Mills, Iowa · implied b. ~1924 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collier |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Tennessee |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mills-County, Iowa
Son, age 16
Mills-County, Iowa · implied b. ~1924 — 6 household members
| Surname | Collier |
| Given Name | John W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Mills |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 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 John Collier across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Collier
Son · 1940 · age 16 · b. ~1924 · Iowa
★ You are viewing this record
Sibling
James Collier
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Collier
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Collier
Sibling · 1940 · age 14
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 — Mills-County, Iowa
Open full size
1940 US Federal Census — Mills-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01183-00435)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Lou Ranne | 7 | daughter | — | Iowa |
| 42 | Roy G. Donner | 40 | head | Farm Manager | Iowa |
| 43 | Irice Grace Donner | 48 | wife | Housewife | Iowa |
| 44 | Delpha F. Donner | 20 | daughter | Student | Iowa |
| 45 | Edward Harmon | 30 | head | Farm Manager | Colorado |
| 46 | Merna M. Harmon | 28 | wife | Comptometer | Iowa |
| 47 | Hannah L. Harmon | 60 | mother | Housewife | Sweden |
| 48 | Max S. Benton | 33 | head | Farm Manager | Iowa |
| 49 | Faye J. Benton | 28 | wife | Housewife | Nebraska |
| 50 | Bobburn A. Benton | 4 | son | — | Iowa |
| 51 | Roger M. Benton | 3 | son | — | Iowa |
| 52 | Eleanor L. Benton | 2 | daughter | — | Iowa |
| 53 | Palmer W. Collier | 44 | head | Farm Manager | Missouri |
| 54 | Roxie M. Collier | 48 | wife | Housewife | Tennessee |
| 55 | John W. Collier THIS PERSON | 16 | son | — | Iowa |
| 56 | Frances L. Collier | 14 | daughter | — | Iowa |
| 57 | Pearl A. Collier | 12 | daughter | — | Iowa |
| 58 | James E. Collier | 10 | son | — | Iowa |
| 59 | Curtiss Hanson | 22 | head | Farm Laborer | Missouri |
| 60 | Goldie E. Hanson | 20 | wife | Housewife | Iowa |
| 61 | J. A. Gilmore | 54 | head | Farm Manager | Iowa |
| 62 | Ivera M. Gilmore | 54 | wife | Housewife | Iowa |
| 63 | Leo J. Gilmore | 23 | son | — | Iowa |
| 64 | Mary M. Gilmore | 22 | daughter | — | Iowa |
| 65 | Arthur A. Gilmore | 26 | son | Farm Manager | Iowa |
| 66 | Leona M. Gilmore | 22 | daughter | Housewife | Iowa |
| 67 | John J. Grudle | 45 | head | Farm Manager | Iowa |
| 68 | Minnie L. Grudle | 42 | wife | Housewife | Iowa |
| 69 | Everett F. Grudle | 20 | son | Farm Laborer | Iowa |
| 70 | Elmo B. Grudle | 17 | son | — | Iowa |
| 71 | June M. Grudle | 14 | daughter | — | Iowa |
| 72 | Eunice C. Grudle | 12 | daughter | — | Iowa |
| 73 | Marcel F. Grudle | 10 | daughter | — | Iowa |
| 74 | Marion Grudle | 3 | daughter | — | Iowa |
| 75 | James M. Steele | 48 | head | Farm Manager | South Dakota |
| 76 | Gladys R. Steele | 40 | wife | Housewife | Iowa |
| 77 | Ida F. Steele | 18 | daughter | — | Iowa |
| 78 | Maxine C. Steele | 13 | daughter | — | Iowa |
| 79 | Johnnie R. Steele | 11 | son | — | Iowa |
| 80 | Willie C. Vanderpool | 43 | head | Farm Manager | Missouri |
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)