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James Mcdowell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Iowa
Our Model Tree links this James Mcdowell across the 1930 and 1940 US Censuses in Jefferson-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Iowa |
| Surname | McDowell |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Section Hand |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Section Hand |
| Township / Ward | Libertyville |
| Est. Birth Year | ~1910 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Mcdowell | Head | — | 30 | ~1910 |
| Billy Mcdowell | Son | — | 9 | ~1931 |
| Clara Mcdowell | Daughter | — | 4 | ~1936 |
| Lloyd Mcdowell | Son | — | 6 | ~1934 |
| Larry Mcdowell | Daughter | — | 1 | ~1939 |
| Floyd Mcdowell | Son | — | 6 | ~1934 |
| Irene Mcdowell | Spouse | — | 24 | ~1916 |
Census Appearances
1930
Wapello, Iowa
Other, age 19
Wapello, Iowa · implied b. ~1911 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDowell |
| Given Name | James F |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Ry. Section |
| Class of Worker | 7877 |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jefferson-County, Iowa
Head, age 30
Jefferson-County, Iowa · implied b. ~1910 — 7 household members
| Surname | McDowell |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Jefferson |
| Occupation | Section Hand |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| 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 James Mcdowell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Mcdowell
Head · 1940 · age 30 · b. ~1910 · 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 — Jefferson-County, Iowa
Open full size
1940 US Federal Census — Jefferson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01170-00295)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jennie Plummer | 62 | Sister | Dress Maker | Iowa |
| 42 | Belle Roland | 70 | Sister | — | Iowa |
| 43 | William D. Fields | 78 | Head | Farmer | Indiana |
| 44 | Lydia A. Fields | 62 | Wife | — | Illinois |
| 45 | Olive L. Fields | 36 | Daughter | — | Iowa |
| 46 | Thomas J. Moss | 55 | Head | Station Agent | Tennessee |
| 47 | Viola Moss | 47 | Wife | — | Iowa |
| 48 | Ruth Moss | 22 | Daughter | — | Iowa |
| 49 | Vernon Moss | 21 | Son | Laborer | Iowa |
| 50 | Huntley Moss | 18 | Son | Brush Maker | Iowa |
| 51 | Tadity Moss | 17 | Son | — | Iowa |
| 52 | Rosamond Eckstein | 26 | Boarder | Teacher | Nebraska |
| 53 | Emmett Boggs | 53 | Head | Trucker | Iowa |
| 54 | Ora Arnduff | 28 | Lodger | Attendant | North Dakota |
| 55 | Samantha Culler | 76 | Head | — | Iowa |
| 56 | Carl J. Frieburg | 75 | Head | — | Sweden |
| 57 | Ida Frieburg | 72 | Wife | — | Sweden |
| 58 | Fernando W. Culler | 72 | Head | — | Iowa |
| 59 | Margaret Culler | 67 | Wife | — | Iowa |
| 60 | Alice Hunt | 63 | Head | — | Iowa |
| 61 | Helen Carter | 32 | Daughter | Teacher | Iowa |
| 62 | Leonard Carter | 8 | Grandson | — | Iowa |
| 63 | Laura Miller | 68 | Head | — | Iowa |
| 64 | Donald Miller | 17 | Nephew | — | Iowa |
| 65 | Laura James | 70 | Head | — | Iowa |
| 66 | Homer James | 46 | Son | — | Iowa |
| 67 | James Mcdowell THIS PERSON | 30 | Head | Section Hand | Iowa |
| 68 | Irene Mcdowell | 24 | Wife | — | Missouri |
| 69 | Billy Gene Mcdowell | 9 | Son | — | Iowa |
| 70 | Floyd Lee Mcdowell | 6 | Son | — | Iowa |
| 71 | Lloyd Dean Mcdowell | 6 | Son | — | Iowa |
| 72 | Clara E. Mcdowell | 4 | Daughter | — | Iowa |
| 73 | Larry Gene Mcdowell | 1 | Daughter | — | Iowa |
| 74 | William Potter | 65 | Head | — | Iowa |
| 75 | Herbert Boggs | 23 | Head | Trucker | Iowa |
| 76 | Edna Boggs | 24 | Wife | — | Iowa |
| 77 | Harold Boggs | 1 | Son | — | Iowa |
| 78 | Ralph E. Ryan | 27 | Head | Welder | Illinois |
| 79 | Mary S. Ryan | 25 | Wife | — | Illinois |
| 80 | John D. Barber | 67 | Head | — | Illinois |
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)