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Kathryn Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Kathryn Smith across the 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Smith |
| Given Name | Kathryn |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Falls City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Cedar Falls City |
| Est. Birth Year | ~1925 |
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 Kathryn | Age | Birth yr |
|---|---|---|---|---|
| Harry Smith | Head | — | 47 | ~1893 |
| Rita Smith | Daughter | — | 11 | ~1929 |
| Harriet Smith | Daughter | — | 9 | ~1931 |
| Kathryn Smith | Spouse | — | 45 | ~1895 |
| Dorothy Smith | Daughter | — | 17 | ~1923 |
| Kathryn Smith | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Black Hawk, …
Daughter, age 5
Black Hawk, Iowa · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Kathryn |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Daughter, age 15
Black-Hawk-County, Iowa · implied b. ~1925 — 6 household members
| Surname | Smith |
| Given Name | Kathryn |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Falls City |
| 1935 Residence (County) | Black Hawk |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| 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 Kathryn Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Kathryn Smith
Daughter · 1940 · age 15 · b. ~1925 · Iowa
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Sibling
Dorothy Smith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Smith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Smith
Sibling · 1940 · age 9
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
39 people indexed on this census page (nara:1940:m-t0627-01139-00292)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond G. Cook | 15 | son | No | Iowa |
| 42 | Harry B. Smith | 47 | head | Deliver | Iowa |
| 43 | Kathryn Smith | 45 | wife | Housework Nursing | Iowa |
| 44 | Dorothy Smith | 17 | daughter | Stenographer | Iowa |
| 45 | Kathryn Smith THIS PERSON | 15 | daughter | — | Iowa |
| 46 | Rita Smith | 11 | daughter | — | Iowa |
| 47 | Harriet Smith | 9 | daughter | — | Iowa |
| 48 | Kate Bundy | 54 | head | — | New York |
| 49 | Harold Bundy | 34 | son | Sheet Metal | Iowa |
| 50 | Lawrence Bundy | 22 | son | Thresh-Man | Iowa |
| 51 | Robert Bundy | 20 | son | Lay-Man | Iowa |
| 52 | Leo Bingham | 37 | head | Ass'T Foreman | Iowa |
| 53 | Violet Bingham | 36 | wife | — | Iowa |
| 54 | Donald Bingham | 12 | son | — | Iowa |
| 55 | Pete Sherkelius|Sherkelus | 50 | head | Machinist | Denmark |
| 56 | Esther Sherkelius|Sherkelus | 41 | wife | — | Denmark |
| 57 | John Sherkelius|Sherkelus | 21 | son | Laborer | Iowa |
| 58 | H. C. Barie | 72 | head | Carpenter | Illinois |
| 59 | Hershille Barie | 72 | wife | — | Illinois |
| 60 | Jack Masters | 67 | brother-in-law | — | Illinois |
| 61 | H. B. Philpott | 62 | head | Clerk | Iowa |
| 62 | Belle Philpott | 59 | wife | — | Illinois |
| 63 | George Brown | 33 | head | Electrician | Iowa |
| 64 | Alice Brown | 32 | wife | — | Iowa |
| 65 | J. S. Holm | 62 | head | Grocer-Man | Iowa |
| 66 | Anna Holm | 60 | wife | — | Iowa |
| 67 | Dan Hummel | 35 | head | Painter | Iowa |
| 68 | Merle Hummel | 33 | wife | — | Iowa |
| 69 | Arlene Hummel | 12 | daughter | — | Iowa |
| 70 | Harold Hummel | 10 | son | — | Iowa |
| 71 | Ivan Hummel | 5 | son | — | Iowa |
| 72 | Jerry Hummel | 4 | son | — | Iowa |
| 73 | Allen Hummel | 0 | son | — | Iowa |
| 74 | Frances Bell | 48 | head | Housework | Missouri |
| 75 | Elijah Bell | 22 | son | Spot Welder | Missouri |
| 76 | Everett Bell | 17 | son | Deliverer | Missouri |
| 77 | Orville Enloe | 57 | head | Repairman | Wisconsin |
| 78 | Sadie Enloe | 54 | wife | — | Iowa |
| 79 | June Enloe | 22 | daughter | Book-Keeper | 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)