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John Mcclure — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Mcclure across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | McClure |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Occupation | Janitor |
| Industry | Office Bldg |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Janitor |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Mcclure | Daughter | — | 2 | ~1938 |
| John Mcclure | Head | — | 25 | ~1915 |
| Michelle Mcclure | Spouse | — | 19 | ~1921 |
Census Appearances
1920
Woodbury, Iowa
Other, age 5
Woodbury, Iowa · implied b. ~1915 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClure |
| Given Name | John |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | South Dakota |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Woodbury, Iowa
Other, age 15
Woodbury, Iowa · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClure |
| Given Name | John H. |
| Relationship to Head | step-son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | South Dakota |
| Occupation | messenger |
| Industry | telegraph comp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Head, age 25
Woodbury-County, Iowa · implied b. ~1915 — 3 household members
| Surname | McClure |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Occupation | Janitor |
| Industry | Office Bldg |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | H-2 |
| 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 Mcclure across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcclure
Head · 1940 · age 25 · b. ~1915 · 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
39 people indexed on this census page (nara:1940:m-t0627-01216-00018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wilmer Shaner | 30 | Son | Attendant | Iowa |
| 42 | Frank Clark | 24 | Head | Chef | Iowa |
| 43 | Lamelle Clark | 21 | Wife | Chef | Iowa |
| 44 | Ronald Clark | 2 | Son | — | Iowa |
| 45 | Joseph D. Hale | 47 | Head | Market Reporter | So Dakota |
| 46 | Florence N. Hale | 43 | Wife | Market Reporter | Iowa |
| 47 | Margery Swanson | 45 | Sister-in-law | — | Iowa |
| 48 | Steve Bray | 32 | Head | Piano Tuner | Nebraska |
| 49 | Mildred Bray | 25 | Wife | — | Missouri |
| 50 | Milton B. Marshall | 39 | Head | Salesman | Nebraska |
| 51 | Eunice Marshall | 36 | Wife | — | No Dakota |
| 52 | Theodore Zanfes | 40 | Head | Police Officer | Greece |
| 53 | Martha Zanfes | 36 | Wife | Manager | Switzerland |
| 54 | Vacant Line | None | — | — | — |
| 56 | John Mcclure THIS PERSON | 25 | Head | Janitor | Iowa |
| 57 | Michelle Mcclure | 19 | Wife | — | So Dakota |
| 58 | Helen Mcclure | 2 | Daughter | — | Iowa |
| 59 | Helen Englebrecht | 53 | Head | Waitress | Iowa |
| 60 | Verdell Bryant | 29 | Partner | Waitress | Nebraska |
| 61 | Kenneth Bryant | 12 | Step-son | — | Iowa |
| 62 | Abbie Hale | 36 | Head | Recreation Room | Iowa |
| 63 | Ira Hale | 36 | Husband | Manager | Nebraska |
| 64 | Cabel Hale | 12 | Son | — | Iowa |
| 65 | John White | 62 | Head | — | So Dakota |
| 66 | L. A. White | 42 | Wife | — | Iowa |
| 67 | Arlean Lewis | 25 | Head | Waitress | Nebraska |
| 68 | Jean Eckerath | 20 | Head | Clerk | Nebraska |
| 69 | Caroline Weaver | 68 | Head | — | Iowa |
| 70 | Knute Ofstad | 50 | Head | Worker | So Dakota |
| 71 | Marsha A. Ofstad | 34 | Wife | — | So Dakota |
| 72 | Harry E. Ofstad | 15 | Son | — | So Dakota |
| 73 | Clifford R. Jacobs | 21 | Head | Salesman | Iowa |
| 74 | Vanda Jacobs | 19 | Wife | Teacher | Iowa |
| 75 | Carl Tate | 25 | Head | Laborer | Iowa |
| 76 | Dorothy Tate | 22 | Wife | — | Nebraska |
| 77 | Joan Tate | 1 | Daughter | — | Iowa |
| 78 | Kenneth Tate | 0 | Son | — | Iowa |
| 79 | Laura Kirsch | 47 | Head | Teacher | Nebraska |
| 80 | Helen Becker | 24 | Head | Waitress | Nebraska |
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)