DJ
Donald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Donald Johnson across the 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Boone City |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Betty Johnson | Daughter | — | 11 | ~1929 |
| Herman Johnson | Head | — | 62 | ~1878 |
| Leonard Johnson | Son | — | 33 | ~1907 |
| Clio Johnson | Son | — | 26 | ~1914 |
| Donald Johnson | Son | — | 13 | ~1927 |
| George Johnson | Son | — | 27 | ~1913 |
| Marion Johnson | Son | — | 32 | ~1908 |
| Eldon Johnson | Son | — | 15 | ~1925 |
| Robert Johnson | Son | — | 25 | ~1915 |
| Josephine Johnson | Spouse | — | 58 | ~1882 |
Census Appearances
1930
Boone, Iowa
Son, age 2
Boone, Iowa · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Donald B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Iowa
Son, age 13
Boone-County, Iowa · implied b. ~1927 — 10 household members
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Highest Grade | 6 |
| 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 Donald Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Johnson
Son · 1940 · age 13 · b. ~1927 · Iowa
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Sibling
Robert Johnson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eldon Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Johnson
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clio Johnson
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Johnson
Sibling · 1940 · age 33
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 — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00147)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Violet Buss | 11 | Daughter | — | Iowa |
| 2 | Deloris Buss | 5 | Daughter | — | Iowa |
| 3 | Otto Schmidt | 51 | Head | Merchant | Germany |
| 4 | Bertha E. O. Schmidt | 53 | Wife | — | Iowa |
| 5 | Victor Zimbelman | 33 | Head | Painter & Paperhanger | Nebraska |
| 6 | Lucille Zimbelman | 34 | Wife | — | Iowa |
| 7 | Linnell Zimbelman | 17 | Son | — | Iowa |
| 8 | Phyllis Zimbelman | 15 | Daughter | — | Iowa |
| 9 | Arlene Zimbelman | 13 | Daughter | — | Iowa |
| 10 | Robert Zimbelman | 11 | Son | — | Iowa |
| 11 | Carl John Rhomberg | 39 | Head | Mechanic | Minnesota |
| 12 | Eva Rhomberg | 36 | Wife | — | Iowa |
| 13 | Robert L. Rhomberg | 6 | Son | — | Iowa |
| 14 | Herman G. Johnson | 62 | Head | Drainage Construction | Iowa |
| 15 | Josephine A. Johnson | 58 | Wife | — | Iowa |
| 16 | Leonard Johnson | 33 | Son | Truck Driver | Iowa |
| 17 | Marion Johnson | 32 | Son | Truck Driver | Iowa |
| 18 | George Johnson | 27 | Son | Truck Driver | Iowa |
| 19 | Clio Johnson | 26 | Son | Laborer | Iowa |
| 20 | Robert Johnson | 25 | Son | New Worker | Iowa |
| 21 | Eldon Johnson | 15 | Son | — | Iowa |
| 22 | Donald Johnson THIS PERSON | 13 | Son | — | Iowa |
| 23 | Betty Mae Johnson | 11 | Daughter | — | Iowa |
| 24 | John Peter Brindy | 62 | Head | Teamster | Iowa |
| 25 | Elizabeth Brindy | 62 | Wife | — | Iowa |
| 26 | Rudolph L. O. Bolt | 77 | Head | — | Germany |
| 27 | Bertha Bolt | 78 | Wife | — | Germany |
| 28 | Emil Fossel | 48 | Son | Firefighter | Iowa |
| 29 | Kate D. Pritchard | 71 | Head | — | Iowa |
| 30 | Katheryn Southern | 53 | Head | — | Iowa |
| 31 | Nadine Southern | 31 | Daughter | Billing Clerk | Iowa |
| 32 | Arlene Southern | 23 | Daughter | Stenographer | Iowa |
| 33 | Naomi Southern | 20 | Daughter | — | Iowa |
| 34 | Charles L. Thorson | 57 | Head | Track Inspector | Iowa |
| 35 | Hattie Thorson | 55 | Wife | — | Iowa |
| 36 | Arthur Boehm | 67 | Head | — | Wisconsin |
| 37 | Helen D. Boehm | 56 | Wife | — | Pennsylvania |
| 38 | Florence Boehm | 38 | Daughter | — | Wisconsin |
| 39 | Fred Swartz | 55 | Head | Barber | Iowa |
| 40 | Helen Swartz | 53 | Wife | — | Iowa |
Related Census Records
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)