HJ
Hilda Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this Hilda Johnson across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 4-person household.
Age 49
b. ~1891
Female
Spouse
Born: South Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Johnson |
| Given Name | Hilda |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1891 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Hilda | Age | Birth yr |
|---|---|---|---|---|
| Audrey Johnson | Daughter | — | 8 | ~1932 |
| David Johnson | Head | — | 58 | ~1882 |
| Harland Johnson | Son | — | 10 | ~1930 |
| Hilda Johnson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Woodbury, Iowa
Spouse, age 29
Woodbury, Iowa · implied b. ~1891 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Hilda O. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Woodbury, Iowa
Spouse, age 39
Woodbury, Iowa · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Hilda O |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 28 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Woodbury-County, Iowa
Spouse, age 49
Woodbury-County, Iowa · implied b. ~1891 — 4 household members
| Surname | Johnson |
| Given Name | Hilda |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Hilda Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Hilda Johnson
Spouse · 1940 · age 49 · b. ~1891 · 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 — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01216-00510)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stella Van Rooyan | 22 | Wife | — | Iowa |
| 2 | Barbara Van Rooyan | 5 | Daughter | — | Iowa |
| 3 | David Johnson | 58 | Head | Salesman | Iowa |
| 4 | Hilda Johnson THIS PERSON | 49 | Wife | — | South Dakota |
| 5 | Harland Johnson | 10 | Son | — | Iowa |
| 6 | Audrey Johnson | 8 | Daughter | — | Iowa |
| 7 | Charles E. Brunk | 68 | Head | Proprietor | Sweden |
| 8 | Wilhelmina Brunk | 63 | Wife | — | Sweden |
| 9 | Bruce Brunk | 22 | Son | Drill Repairer | Iowa |
| 10 | Rudolf Hajny | 57 | Head | Beef Butcher | Czechoslovakia |
| 11 | Mary Hajny | 55 | Wife | — | Czechoslovakia |
| 12 | Josephine Runner | 35 | Daughter | Bookkeeper | Nebraska |
| 13 | Henry Runner | 42 | Son-in-law | Salesman | Iowa |
| 14 | Egbert Boe | 36 | Head | Pastor | North Dakota |
| 15 | Beatrice Boe | 30 | Wife | — | Minnesota |
| 16 | David Boe | 4 | Son | — | Minnesota |
| 17 | Edward Lawrence | 72 | Head | — | Illinois |
| 18 | Frank Roma | 26 | Head | Office Clerk | Iowa |
| 19 | Cecelia Roma | 25 | Wife | Waitress | South Dakota |
| 20 | Charles Hamill | 34 | Head | Office Clerk | Northern Ireland |
| 21 | Thelma Hamill | 31 | Wife | — | South Dakota |
| 22 | Robert Hamill | 7 | Son | — | Missouri |
| 23 | William Erba | 52 | Head | — | Iowa |
| 24 | Leola Erba | 51 | Wife | — | Iowa |
| 25 | Lavonne Erba | 23 | Daughter | Stenographer | Iowa |
| 26 | Arthur Brott | 31 | Head | Motorman | Iowa |
| 27 | Mildred Brott | 37 | Wife | — | Iowa |
| 28 | Joseph Van Rooyan | 54 | Head | Car Inspector | Iowa |
| 29 | Marie Van Rooyan | 49 | Wife | — | South Dakota |
| 30 | Lawrence Van Rooyan | 28 | Son | Checker | Iowa |
| 31 | Hans Van Weart | 27 | Head | Machinist | Iowa |
| 32 | Ruth Van Weart | 25 | Wife | — | Iowa |
| 33 | Virgil Washburn | 34 | Head | Yard Man | Iowa |
| 34 | Marie Washburn | 32 | Wife | — | Iowa |
| 35 | Joyce Washburn | 12 | Daughter | — | Iowa |
| 36 | Robert Washburn | 10 | Son | — | Iowa |
| 37 | Donald Washburn | 2 | Son | — | Iowa |
| 38 | George Rehal | 35 | Head | Laborer | Syria |
| 39 | Verna Rehal | 27 | Wife | — | Kansas |
| 40 | Mary Rehal | 9 | Daughter | — | 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)