BJ
Barbara Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lucas-County, Iowa
Our Model Tree links this Barbara Johnson across the 1930 and 1940 US Censuses in Lucas-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 | Lucas-County, Iowa |
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Chariton city |
| 1935 Residence (County) | Lucas |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Chariton 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 Barbara | Age | Birth yr |
|---|---|---|---|---|
| Barbara Johnson | Daughter | — | 15 | ~1925 |
| Sandra Johnson | Daughter | — | 1 | ~1939 |
| Herbert Johnson | Head | — | 46 | ~1894 |
| Richard Johnson | Son | — | 6 | ~1934 |
| Robert Johnson | Son | — | 21 | ~1919 |
| Ermina Johnson | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Lucas, Iowa
Daughter, age 5
Lucas, Iowa · implied b. ~1925 — 2 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 | 5 |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lucas-County, Iowa
Daughter, age 15
Lucas-County, Iowa · implied b. ~1925 — 6 household members
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Chariton city |
| 1935 Residence (County) | Lucas |
| Highest Grade | Hs 1 |
| 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 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Richard Johnson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sandra Johnson
Sibling · 1940 · age 1
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 — Lucas-County, Iowa
Open full size
1940 US Federal Census — Lucas-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01178-00437)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bert Dale | 55 | Head | Conductor | Texas |
| 2 | Mabel Dale | 54 | Wife | — | Iowa |
| 3 | Russell Dale | 21 | Son | Construction | Iowa |
| 4 | Frances Dale | 17 | Daughter | — | Iowa |
| 5 | Dorothy Dale | 15 | Daughter | — | Iowa |
| 6 | Eliza J. Gillespie | 85 | Head | — | Penn |
| 7 | Hazel Gillespie | 45 | Daughter | Chief Operator | Iowa |
| 8 | Effie Peterson | 61 | Daughter | — | Iowa |
| 9 | Herbert Johnson | 46 | Head | Band Instructor | Iowa |
| 10 | Ermina Johnson | 39 | Wife | — | England |
| 11 | Robert Johnson | 21 | Son | Helper Fender Man | Iowa |
| 12 | Barbara Johnson THIS PERSON | 15 | Daughter | — | Iowa |
| 13 | Richard Johnson | 6 | Son | — | Iowa |
| 14 | Sandra Kay Johnson | 1 | Daughter | — | Iowa |
| 15 | Paul Perry | 37 | Head | Highway Engineer | Oklahoma |
| 16 | Evelyn S. Perry | 27 | Wife | — | Iowa |
| 17 | Larry Perry | 7 | Son | — | Iowa |
| 18 | Danny Perry | 6 | Son | — | Iowa |
| 19 | Nancy Perry | 3 | Daughter | — | Iowa |
| 20 | Charles Widener | 47 | Head | Egg Candler | Iowa |
| 21 | Fay Widener | 40 | Wife | — | Iowa |
| 22 | Betty Widener | 18 | Daughter | Housework | Iowa |
| 23 | Grace Moon | 49 | Head | Clerk | Iowa |
| 24 | Leo Moon | 25 | Son | Truck Driver | Iowa |
| 25 | Claude Penning | 54 | Head | Carpenter | Wisconsin |
| 26 | Elizabeth Penning | 49 | Wife | — | Missouri |
| 27 | Eugene Penning | 15 | Son | — | Iowa |
| 28 | Rollin Penning | 8 | Son | — | Iowa |
| 29 | William Hamilton | 86 | Father-in-law | — | Indiana |
| 30 | Rosa Hamilton | 68 | Sister-in-law | — | Missouri |
| 31 | Dennis Brush | 26 | Head | Drying Powder | Iowa |
| 32 | Vivian Brush | 24 | Wife | — | Missouri |
| 33 | James Brush | 4 | Son | — | Iowa |
| 34 | Margaret Tuelby | 73 | Head | — | Iowa |
| 35 | Bert Mcneil | 44 | Head | — | Iowa |
| 36 | Lillian Mcneil | 29 | Wife | — | Iowa |
| 37 | Leslie Mcneil | 11 | Son | — | Iowa |
| 38 | Reese Comer | 48 | Head | Painting Toilets | Iowa |
| 39 | Andra Comer | 34 | Wife | — | Iowa |
| 40 | Reese Jr. Comer | 14 | Son | — | 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)