TJ
Thomas Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Adair-County, Iowa
Our Model Tree links this Thomas Johnson across the 1920, 1930 and 1940 US Censuses in Adair-County, Iowa (XGBoost, ~Confirmed), with identified parents E & Mary — first a head (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Adair-County, Iowa |
| Surname | Johnson |
| Given Name | Thomas D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Adair |
| Additional Details | |
| Occupation | Farmer |
| Industry | on farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Washington Township |
| Est. Birth Year | ~1907 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Jo Johnson | Daughter | — | 2 | ~1938 |
| Thomas Johnson | Head | — | 33 | ~1907 |
| Larry Johnson | Son | — | 1 | ~1939 |
| Leland Johnson | Son | — | 3 | ~1937 |
| Fannie Johnson | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Adair, Iowa
Son, age 13
Adair, Iowa · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Adair, Iowa
Son, age 23
Adair, Iowa · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Adair-County, Iowa
Head, age 33
Adair-County, Iowa · implied b. ~1907 — 5 household members
| Surname | Johnson |
| Given Name | Thomas D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Adair |
| Occupation | Farmer |
| Industry | on farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Thomas Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father E Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
E Johnson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Johnson
Head · 1940 · age 33 · b. ~1907 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Adair-County, Iowa
Open full size
1940 US Federal Census — Adair-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01136-00425)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Violet Antiel | 26 | Wife | — | Iowa |
| 42 | C. Larry Antiel | 6 | Son | — | Iowa |
| 43 | Leo J. Ahnen | 53 | Head | Farmer | Iowa |
| 44 | Sarah G. Ahnen | 49 | Wife | Housework | Iowa |
| 45 | Wilma Ahnen | 22 | Daughter | Housework | Iowa |
| 46 | Thomas D. Johnson THIS PERSON | 33 | Head | Farmer | Iowa |
| 47 | Fannie Johnson | 26 | Wife | — | Iowa |
| 48 | Leland Johnson | 3 | Son | — | Iowa |
| 49 | Jo Anne Johnson | 2 | Daughter | — | Iowa |
| 50 | Larry Johnson | 1 | Son | — | Iowa |
| 51 | Fred R. Hegah | 79 | Head | — | New York |
| 52 | Leota Hegah | 73 | Wife | — | Iowa |
| 53 | William Johnson | 31 | Head | Farmer | Iowa |
| 54 | Verma D. Johnson | 26 | Wife | — | Iowa |
| 55 | Richard Johnson | 8 | Son | — | Iowa |
| 56 | William Johnson | 5 | Son | — | Iowa |
| 57 | Leon D. Davis | 60 | Head | Farmer | Iowa |
| 58 | Lula Davis | 52 | Wife | — | Iowa |
| 59 | Mildred Davis | 20 | Daughter | Housekeeping | Iowa |
| 60 | Bernard Davis | 18 | Son | Laborer | Iowa |
| 61 | Beulah Davis | 16 | Daughter | — | Iowa |
| 62 | Helen Davis | 14 | Daughter | — | Iowa |
| 63 | Elmer Woodside | 25 | Head | Farmer | Iowa |
| 64 | Bernice D. Woodside | 26 | Wife | — | Iowa |
| 65 | Marilyn Woodside | 1 | Daughter | — | Iowa |
| 66 | Rep. D. Edwards | 30 | Head | Farmer | Iowa |
| 67 | Dorma Edwards | 29 | Wife | — | Iowa |
| 68 | Dale Edwards | 7 | Son | — | Iowa |
| 69 | Beverly Edwards | 3 | Daughter | — | Iowa |
| 70 | Sam W. D. Carne | 67 | Head | Farmer | Iowa |
| 71 | Della Carne | 64 | Wife | — | Iowa |
| 72 | Elizabeth D. Sullivan | 76 | Head | — | Iowa |
| 73 | Russel W. D. Woodside | 52 | Head | Farmer | Iowa |
| 74 | Iona Woodside | 50 | Wife | Farmer | Iowa |
| 75 | Dorothy Woodside | 18 | Daughter | — | Iowa |
| 76 | Leon Buchner | 19 | Hired hand | New Worker | Iowa |
| 77 | Clyde D. Edwards | 37 | Head | Laborer | Iowa |
| 78 | Lois D. Edwards | 32 | Wife | Laborer | Iowa |
| 79 | John Edwards | 5 | Son | — | Iowa |
| 80 | Jerry Edwards | 3 | Son | — | Iowa |
Pedigree Summary
Thomas
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)