WC
Walter Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this Walter Campbell across the 1920, 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 6-person household.
Age 61
b. ~1879
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Campbell |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Whiting City |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | helper |
| Industry | city street department |
| Class of Worker | PW |
| Hours Worked | 21 |
| Income (1939) | 320 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Helper |
| Township / Ward | Whiting City |
| Est. Birth Year | ~1879 |
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 Walter | Age | Birth yr |
|---|---|---|---|---|
| Mary Halter | Other | — | 79 | ~1861 |
| Mary Campbell | Daughter | — | 15 | ~1925 |
| Joe Halter | Son | — | 33 | ~1907 |
| Richard Halter | Other | — | 5 | ~1935 |
| Alice Campbell | Spouse | — | 55 | ~1885 |
| Walter Campbell | Head | — | 61 | ~1879 |
Census Appearances
1920
Lake, Indiana
Head, age 40
Lake, Indiana · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Walter E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Illinois |
| Occupation | Boilermaker |
| Industry | S. O. Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Lake, Indiana
Head, age 50
Lake, Indiana · implied b. ~1880 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 27 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Carpenter |
| Industry | Oil Refinery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Lake-County, Indiana
Head, age 61
Lake-County, Indiana · implied b. ~1879 — 6 household members
| Surname | Campbell |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Whiting City |
| 1935 Residence (County) | Lake |
| Occupation | helper |
| Industry | city street department |
| Class of Worker | PW |
| Hours Worked | 21 |
| Income (1939) | 320 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Walter Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Walter Campbell
Head · 1940 · age 61 · b. ~1879 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01068-00517)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Grace Thompson | 25 | — | Librarian | Pennsylvania |
| 42 | William Doran | 67 | Head | — | England |
| 43 | Nora Doran | 65 | Wife | — | Illinois |
| 44 | Mary Buck | 43 | Daughter | — | Illinois |
| 45 | Burton Roenstern | 33 | Head | Proprietor | Lithuania |
| 46 | Elsie Roenstern | 29 | Wife | — | Canada |
| 47 | William Roenstern | 1 | Son | — | Illinois |
| 48 | William Clemons | 65 | Head | Mechanic | Scotland |
| 49 | Katherine Clemons | 53 | Wife | Alteration Lady | Iowa |
| 50 | Andrew Harmon | 68 | Head | — | Irish Free State |
| 51 | Mary Harmon | 65 | Wife | — | Pennsylvania |
| 52 | Herbert Harmon | 34 | Son | Truck Driver | Indiana |
| 53 | Gertrude Harmon | 30 | Daughter | — | Indiana |
| 54 | Raymond Harmon | 28 | Son | Truck Driver | Indiana |
| 55 | Charles Cail | 52 | Head | Pumper Helper | Indiana |
| 56 | Hazel Cail | 41 | Wife | — | Kansas |
| 57 | Virginia Cail | 9 | Daughter | — | Indiana |
| 58 | Homer Cail | 4 | Son | — | Indiana |
| 59 | Shirley Cail | 3 | Daughter | — | Indiana |
| 60 | Charles Cail | 2 | Son | — | Indiana |
| 61 | Leo Mccampbell | 38 | Head | Shift Foreman | Indiana |
| 62 | Ruth Mccampbell | 38 | Wife | — | Indiana |
| 63 | Leo Mccampbell | 16 | Son | — | Illinois |
| 64 | Patricia Mccampbell | 11 | Daughter | — | Indiana |
| 65 | Walter Campbell THIS PERSON | 61 | Head | Helper | Kansas |
| 66 | Alice Campbell | 55 | Wife | — | Missouri |
| 67 | Mary Janice Campbell | 15 | Daughter | — | Indiana |
| 68 | Joe Halter | 33 | Son | Helper | Colorado |
| 69 | Richard Halter | 5 | Grandson | — | Indiana |
| 70 | Mary Ella Halter | 79 | Mother | — | Kansas |
| 71 | Evelyn Groff | 39 | Head | Floor Manager | Indiana |
| 72 | Evelyn Groff | 19 | Daughter | — | Indiana |
| 73 | William Groff | 17 | Son | — | Indiana |
| 74 | Richard Groff | 14 | Son | — | Indiana |
| 76 | Michael De Gowan | 49 | Head | Fireman | Illinois |
| 77 | Amanda De Gowan | 45 | Wife | Proprietor | Michigan |
| 78 | Florence De Gowan | 23 | Daughter | — | Indiana |
| 79 | William Marthens | 55 | Head | Watchman | Indiana |
| 80 | Bertha Marthens | 53 | Wife | — | Indiana |
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)