MH
Mary Haas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Weld-County, Colorado
Our Model Tree links this Mary Haas across the 1930 and 1940 US Censuses in Weld-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 5-person household.
Age 38
b. ~1902
Female
Spouse
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Weld-County, Colorado |
| Surname | Haas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Windsor town |
| 1935 Residence (County) | Weld |
| Naturalization Status | First papers filed |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Township / Ward | Windsor Town |
| Est. Birth Year | ~1902 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Phillip Haas | Head | — | 42 | ~1898 |
| Lillian Haas | Daughter | — | 5 | ~1935 |
| Mary Haas | Spouse | — | 38 | ~1902 |
| Wilma Haas | Daughter | — | 16 | ~1924 |
| Ruben Haas | Son | — | 17 | ~1923 |
Census Appearances
1930
Weld, Colorado
Other, age 27
Weld, Colorado · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hess |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1910 |
| Age at First Marriage | 19 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | beet worker |
| Industry | farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Weld-County, Colorado
Spouse, age 38
Weld-County, Colorado · implied b. ~1902 — 5 household members
| Surname | Haas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Windsor town |
| 1935 Residence (County) | Weld |
| Naturalization Status | First papers filed |
| Hours Worked | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Mary Haas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Haas
Spouse · 1940 · age 38 · b. ~1902 · Colorado
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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 — Weld-County, Colorado
Open full size
1940 US Federal Census — Weld-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00481-00198)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mona Ray | 5 | Son | — | Colorado |
| 2 | Joyce A. Ray | 2 | Daughter | — | Colorado |
| 3 | Albert G. Anthony | 31 | Head | Truck Driver | Kansas |
| 4 | Garnett Anthony | 30 | Wife | — | Kansas |
| 5 | Robert L. Anthony | 8 | Son | — | Kansas |
| 6 | Audry Anthony | 2 | Daughter | — | Colorado |
| 8 | Phillip B. Nofls | 48 | Head | Common Labor | Russia |
| 9 | Elizabeth Nofls | 50 | Wife | — | Russia |
| 10 | Harry Nofls | 22 | Son | Common Labor | Colorado |
| 11 | Reuben Nofls | 16 | Son | Common Labor | Colorado |
| 12 | Herald Nofls | 14 | Son | — | Colorado |
| 13 | Phillip Jr. Nofls | 26 | Head | Common Labor | Colorado |
| 14 | Alma Nofls | 21 | Wife | — | Canada |
| 15 | Dale E. Nofls | 2 | Son | — | Colorado |
| 16 | John Lind | 67 | Head | — | Russia |
| 17 | Pauline Lind | 32 | Daughter | — | Colorado |
| 18 | William E. Lind | 56 | Head | Beet Worker | Russia |
| 19 | Mary Lind | 50 | Wife | — | Russia |
| 20 | William Lind | 22 | Son | Truck Driver | Colorado |
| 21 | Helen Lind | 16 | Daughter | — | Colorado |
| 22 | Olinda Lind | 12 | Daughter | — | Colorado |
| 23 | Ruth Lind | 8 | Daughter | — | Colorado |
| 24 | Phillip Haas | 42 | Head | Beet Worker | Russia |
| 25 | Mary Haas THIS PERSON | 38 | Wife | — | Russia |
| 26 | Ruben Haas | 17 | Son | Beet Worker | Colorado |
| 27 | Wilma Haas | 16 | Daughter | — | Colorado |
| 28 | Lillian Haas | 5 | Daughter | — | Colorado |
| 29 | Fred Maier | 81 | Head | — | Russia |
| 30 | Marie Maier | 76 | Wife | — | Russia |
| 31 | Henry Becker | 43 | Head | Beet Worker | Russia |
| 32 | Annie Becker | 40 | Wife | — | Russia |
| 33 | Ester Becker | 19 | Daughter | Housemaid | Colorado |
| 34 | Eva Becker | 18 | Daughter | — | Colorado |
| 35 | Leona Becker | 15 | Daughter | — | Colorado |
| 36 | Rosie M. Becker | 12 | Daughter | — | Colorado |
| 37 | Betty Becker | 7 | Daughter | — | Colorado |
| 38 | Dale H. Becker | 6 | Son | — | Colorado |
| 39 | Pete Erves | 72 | Head | — | Russia |
| 40 | Raymond Stroh | 23 | Head | Common Labor | Colorado |
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)