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William Bartlett — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this William Bartlett across the 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 5-person household.
Age 10
b. ~1930
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Bartlett |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Waterloo 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Harold Bartlett | Head | — | 35 | ~1905 |
| Curtis Bartlett | Son | — | 8 | ~1932 |
| William Bartlett | Son | — | 10 | ~1930 |
| Gerald Bartlett | Son | — | 12 | ~1928 |
| Dorothy Bartlett | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Black Hawk, …
Son, age
Black Hawk, Iowa · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bartlett |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Son, age 10
Black-Hawk-County, Iowa · implied b. ~1930 — 5 household members
| Surname | Bartlett |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| 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 William Bartlett across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Bartlett
Son · 1940 · age 10 · b. ~1930 · Iowa
★ You are viewing this record
Sibling
Curtis Bartlett
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Bartlett
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 — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01140-00835)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ethel S. Thill | 35 | Wife | House Wife | Iowa |
| 42 | Delores B. Thill | 5 | Dtr | — | Iowa |
| 43 | Dora Ann Thill | 3 | Dtr | — | Iowa |
| 44 | Frank L. Thill | 0 | Son | — | Iowa |
| 45 | Mary J. Thill | 2 | Dtr | — | Iowa |
| 46 | Karen J. Thill | 5 | Dtr | — | Iowa |
| 47 | Henry C. Alton | 56 | Head | Laborer | Iowa |
| 48 | Josephine E. Alton | 46 | Wife | Seamstress | Iowa |
| 49 | Margaret R. Alton | 16 | Dtr | Office Worker | Minnesota |
| 50 | Louise E. Alton | 13 | Dtr | — | Iowa |
| 51 | Harold E. Mixdorf | 27 | Head | Laborer | Iowa |
| 52 | Bertha E. Mixdorf | 21 | Wife | House Wife | Iowa |
| 53 | William C. Mixdorf | 5 | Son | — | Iowa |
| 54 | Kathryn Mixdorf | 3 | Dtr | — | Iowa |
| 55 | Robert L. Mixdorf | 1 | Son | — | Iowa |
| 56 | Louis C. Mettler | 33 | Head | Molder | Kentucky |
| 57 | Ellen M. Mettler | 29 | Wife | House Wife | Oklahoma |
| 58 | Betty L. Mettler | 11 | Dtr | — | Indiana |
| 59 | Jeannie L. Mettler | 10 | Dtr | — | Illinois |
| 60 | Hans O. Torgler | 73 | Head | Pipe Fitter | Switzerland |
| 61 | Anna Torgler | 71 | Wife | House Wife | Switzerland |
| 62 | Hans J. Torgler | 25 | Son | Assembler | Iowa |
| 63 | Oberton A. Moberly | 48 | Head | Plant Worker | Kansas |
| 64 | Minnie M. Moberly | 52 | Wife | House Wife | Iowa |
| 65 | Henry M. Moberly | 12 | Son | — | Iowa |
| 66 | Harold B. Bartlett | 35 | Head | Inspector | Iowa |
| 67 | Dorothy B. Bartlett | 33 | Wife | House Wife | Iowa |
| 68 | Gerald D. Bartlett | 12 | Son | — | Iowa |
| 69 | William H. Bartlett THIS PERSON | 10 | Son | — | Iowa |
| 70 | Curtis D. Bartlett | 8 | Son | — | Iowa |
| 71 | Myrtle H. Thompson | 47 | Head | House Wife | Minnesota |
| 72 | Esther B. Thompson | 23 | Dtr | Plant Worker | Iowa |
| 73 | Charles A. Thompson | 21 | Son | Shipping Clerk | Iowa |
| 74 | Hazel L. Thompson | 19 | Dtr | House Wife | Iowa |
| 75 | Arlene D. Thompson | 12 | Dtr | — | Iowa |
| 76 | Clarence E. Miner | 39 | Head | Laborer | Iowa |
| 77 | Alma C. Miner | 33 | Wife | House Wife | Iowa |
| 78 | John E. Miner | 7 | Son | — | Iowa |
| 79 | Jeremiah Ryan | 72 | Head | Machine Operator | Illinois |
| 80 | Ella A. Ryan | 75 | Wife | House Wife | 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)