JH
John Haas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this John Haas across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 5-person household.
Age 48
b. ~1892
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Haas |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Township |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | poultry man |
| Industry | agriculture |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Poultry Man |
| Township / Ward | Pleasant Valley Township |
| Est. Birth Year | ~1892 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Donald Brewin | Other | — | 6 | ~1934 |
| Mary Haas | Daughter | — | 10 | ~1930 |
| Lucille Haas | Spouse | — | 28 | ~1912 |
| Delores Brewin | Other | — | 5 | ~1935 |
| John Haas | Head | — | 48 | ~1892 |
Census Appearances
1920
Scott, Iowa
Head, age 27
Scott, Iowa · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hass |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Iowa |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Truck farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Scott, Iowa
Head, age 38
Scott, Iowa · implied b. ~1892
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Hass |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 400 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Scott-County, Iowa
Head, age 48
Scott-County, Iowa · implied b. ~1892 — 5 household members
| Surname | Haas |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Township |
| 1935 Residence (County) | Scott |
| Occupation | poultry man |
| Industry | agriculture |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Haas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Haas
Head · 1940 · age 48 · b. ~1892 · Iowa
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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 — Scott-County, Iowa
Open full size
1940 US Federal Census — Scott-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01203-01191)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eugene Hanne | 22 | Son | Hired Hand | Iowa |
| 2 | Clyde Nickelson | 41 | Head | Laborer | Illinois |
| 3 | Mae Nickelson | 41 | Wife | — | Iowa |
| 4 | Lawrence Nickelson | 21 | Son | Apprentice Rifleman | Iowa |
| 5 | Clyde Jr. Nickelson | 17 | Son | — | Iowa |
| 6 | La Maine Halberg | 14 | Nephew | — | Iowa |
| 7 | Robert Halberg | 12 | Nephew | — | Iowa |
| 8 | Sharon Halberg | 9 | Niece | — | Iowa |
| 9 | Theodore Halberg | 7 | Nephew | — | Iowa |
| 10 | George Boyd | 53 | Head | Manager | Iowa |
| 11 | Gilbert Bathne | 20 | Lodger | Laborer | Iowa |
| 12 | Henry Boerge | 67 | Head | Farmer | Germany |
| 13 | Minnie Boerge | 61 | Wife | — | Germany |
| 14 | Lyle H. Wingert | 34 | Head | Machinist | Illinois |
| 15 | Gladys Wingert | 32 | Wife | — | Iowa |
| 16 | Joseph H. White | 43 | Head | Assembler | Kansas |
| 17 | Ruth White | 39 | Wife | — | Illinois |
| 18 | Eugene White | 20 | Son | Wood Worker | Illinois |
| 19 | Joseph White | 8 | Son | — | Illinois |
| 20 | Clement Rubery | 38 | Head | Sales Manager | England |
| 21 | Emma Rubery | 40 | Wife | — | Rhode Island |
| 22 | John Haas THIS PERSON | 48 | Head | Poultry Man | Iowa |
| 23 | Lucille Haas | 28 | Wife | — | Kansas |
| 24 | Mary Ann Haas | 10 | Daughter | — | Iowa |
| 25 | Donald Brewin | 6 | Step-son | — | South Dakota |
| 26 | Delores Brewin | 5 | Step-daughter | — | South Dakota |
| 27 | Herbert Bluedorn | 36 | Head | Laborer | Iowa |
| 28 | Gertrude Bluedorn | 46 | Wife | — | Iowa |
| 29 | Elmer Elliott | 41 | Head | Farmer | Indiana |
| 30 | Echo Elliott | 28 | Wife | — | Iowa |
| 31 | Robert Elliott | 1 | Son | — | Iowa |
| 32 | Edna D. Elliott | 0 | Daughter | — | Iowa |
| 33 | Harold Luck | 46 | Head | Salesman | Iowa |
| 34 | Mary Luck | 33 | Wife | — | Mississippi |
| 35 | Nancy Luck | 12 | Daughter | — | Iowa |
| 36 | Mary Luck | 4 | Daughter | — | Iowa |
| 37 | Joe Luck | 3 | Son | — | Iowa |
| 38 | Myrtle Morgan | 63 | Mother-in-law | Piano Tuner | Mississippi |
| 39 | Walter Herlick | 58 | Head | Piano Tuner | Iowa |
| 40 | Amanda Herlick | 56 | 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)