BJ
Barbara Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Barbara Johnson across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 7-person household.
Age 10
b. ~1930
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1930 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| Patricia Johnson | Daughter | — | 8 | ~1932 |
| Barbara Johnson | Daughter | — | 10 | ~1930 |
| Vernice Johnson | Daughter | — | 5 | ~1935 |
| Harriet Johnson | Head | — | 38 | ~1902 |
| Leroy Johnson | Son | — | 16 | ~1924 |
| Dale Johnson | Son | — | ~1940 | |
| Theodore Johnson | Son | — | 12 | ~1928 |
Census Appearances
1930
Polk, Iowa
Daughter, age
Polk, Iowa · implied b. ~1930 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Barbara J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 10
Polk-County, Iowa · implied b. ~1930 — 7 household members
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | No 5 |
| 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 Barbara Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Johnson
Daughter · 1940 · age 10 · b. ~1930 · Iowa
★ You are viewing this record
Sibling
Leroy Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Johnson
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernice Johnson
Sibling · 1940 · age 5
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01196-00485)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Dean Bell | 1 | Son | — | Iowa |
| 42 | Bernard Coons | 39 | Head | Supt Mill | Iowa |
| 43 | Arthelia Coons | 37 | Wife | — | Iowa |
| 44 | Ralph Coons | 14 | Son | — | Iowa |
| 45 | Berdena Coons | 12 | Daughter | — | Iowa |
| 46 | Robert Coons | 7 | Son | — | Iowa |
| 47 | Emil Morse | 39 | Head | — | Mich |
| 48 | Bertha Morse | 46 | Wife | — | Ill |
| 49 | Cleveland Hood | 56 | Head | Checker | Ill |
| 50 | Anna Hood | 51 | Wife | Checker | Ill |
| 51 | Virgil Hood | 28 | Son | Fireman | Ill |
| 52 | Claudine Hood | 30 | Daughter-in-law | Saleslady | Iowa |
| 53 | Mae Scovic | 61 | Sister | — | Ill |
| 54 | Harriet Johnson | 38 | Head | — | Iowa |
| 55 | Leroy Johnson | 16 | Son | — | Iowa |
| 56 | Theodore Johnson | 12 | Son | — | Iowa |
| 57 | Barbara Johnson THIS PERSON | 10 | Daughter | — | Iowa |
| 58 | Patricia Johnson | 8 | Daughter | — | Iowa |
| 59 | Vernice Johnson | 5 | Daughter | — | Iowa |
| 60 | Dale R. Johnson | 0 | Son | — | Iowa |
| 61 | Lissa Fenner | 60 | Head | — | Iowa |
| 62 | August Anderson | 59 | Head | — | Sweden |
| 63 | Severina Anderson | 60 | Wife | — | Sweden |
| 64 | Anna Anderson | 26 | Daughter | Secretary | Iowa |
| 65 | John Anderson | 23 | Son | Shipping Clerk | Iowa |
| 66 | Harold Anderson | 22 | Son | Helper | Iowa |
| 67 | Emery Hosner | 35 | Head | Laborer | Iowa |
| 68 | Velma Hosner | 33 | Wife | — | Iowa |
| 69 | Emery Jr. Hosner | 14 | Son | — | Iowa |
| 70 | Richard Hosner | 13 | Son | — | Iowa |
| 71 | Nancy Hosner | 10 | Daughter | — | Iowa |
| 72 | Jerry Hosner | 6 | Son | — | Iowa |
| 73 | Gordon Hosner | 4 | Son | — | Iowa |
| 74 | Larry Hosner | 3 | Son | — | Iowa |
| 75 | Linda Hosner | 1 | Daughter | — | Iowa |
| 76 | Lee Ann Hosner | 0 | Daughter | — | Iowa |
| 77 | Leo Coons | 31 | Head | Truck Driver | Iowa |
| 78 | Lucille Coons | 25 | Wife | — | Iowa |
| 79 | Patty Lee Coons | 4 | Daughter | — | Iowa |
| 80 | Robert Gilmore | 32 | Head | Mill Worker | 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)