JC
James Carson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this James Carson across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 5-person household.
Age 12
b. ~1928
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Carson |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1928 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Carson | Son | — | 12 | ~1928 |
| Claudia Carson | Spouse | — | 45 | ~1895 |
| William Carson | Son | — | 13 | ~1927 |
| William Carson | Head | — | 55 | ~1885 |
| Thomas Carson | Son | — | 8 | ~1932 |
Census Appearances
1930
Polk, Iowa
Son, age 2
Polk, Iowa · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carson |
| Given Name | James R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 12
Polk-County, Iowa · implied b. ~1928 — 5 household members
| Surname | Carson |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | 6 |
| 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 James Carson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Carson
Son · 1940 · age 12 · b. ~1928 · Iowa
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Sibling
William Carson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Carson
Sibling · 1940 · age 8
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-t0627-01194-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella W. Reeder | 68 | Wife | — | Missouri |
| 42 | Wesley E. Reeder | 34 | Son | Time Keeper | Iowa |
| 43 | Herbert W. Sellers | 31 | Head | Record Clerk | Kentucky |
| 44 | Betty Sellers | 24 | Wife | — | Iowa |
| 45 | Sally Lynne Sellers | 2 | Daughter | — | Iowa |
| 46 | Margaret Swedshon | 26 | Lodger | Clerk | Iowa |
| 47 | Stella Brower | 20 | Lodger | Stenographer | Iowa |
| 48 | Sylvester Hale | 59 | Head | Signal Man | Iowa |
| 49 | Dottie V. Hale | 53 | Wife | — | Iowa |
| 50 | Ends Block 7 Starts 8 | None | — | — | — |
| 51 | Meinard French | 30 | Head | Mechanic | Iowa |
| 52 | Erna V. French | 29 | Wife | — | Iowa |
| 53 | Vincent Dodd | 24 | Head | Attendant | Iowa |
| 54 | Margaret N. Dodd | 23 | Wife | Packer | Iowa |
| 55 | Vincent N. Dodd | 0 | Son | — | Iowa |
| 56 | Stratus W. Summers | 67 | Head | Mechanic | Iowa |
| 57 | Becca Summers | 67 | Wife | — | Iowa |
| 58 | Amos Miller | 55 | Brother-in-law | Carpet Man | Iowa |
| 59 | Fred W. Hildebrand | 53 | Head | Interior Decorator | North Dakota |
| 60 | Blanche Hildebrand | 51 | Wife | — | Michigan |
| 61 | Thomas Hildebrand | 18 | Son | — | Iowa |
| 62 | George Hildebrand | 16 | Son | — | Iowa |
| 63 | Otto Edwards | 45 | Head | Guard | Missouri |
| 64 | Naomi Edwards | 35 | Wife | — | Missouri |
| 65 | James W. Griffith | 28 | Lodger | Salesman | Iowa |
| 66 | William F. Carson | 55 | Head | Stereotype | Iowa |
| 67 | Claudia M. Carson | 45 | Wife | — | Illinois |
| 68 | William R. Carson | 13 | Son | — | Iowa |
| 69 | James R. Carson THIS PERSON | 12 | Son | — | Iowa |
| 70 | Thomas J. Carson | 8 | Son | — | Iowa |
| 71 | John L. Mosher | 70 | Head | Night Watch | Iowa |
| 72 | Marion R. Mosher | 17 | Daughter | — | Iowa |
| 73 | Zena E. Bigwood | 68 | House Keeper | House Keeper | Indiana |
| 74 | William Myers | 48 | Head | Salesman | Virginia |
| 75 | Ruth W. Myers | 39 | Wife | — | Missouri |
| 76 | Henry S. Hall | 49 | Head | Pressman | Iowa |
| 77 | Alice X. Hall | 47 | Wife | — | Iowa |
| 78 | Hugh Reynolds | 65 | Head | Manager | Ireland |
| 79 | Margaret Reynolds | 65 | Wife | — | Indiana |
| 80 | Loretta Mcnelly | 43 | Lodger | Waitress | Illinois |
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)