CJ
Carl Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Carl Jones across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Jones |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1929 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Hazel Jones | Daughter | — | 8 | ~1932 |
| Carl Jones | Other | — | 40 | ~1900 |
| Carl Jones | Son | — | 11 | ~1929 |
| Richard Jones | Son | — | 15 | ~1925 |
| Earl Jones | Son | — | 17 | ~1923 |
| Earl Jones | Head | — | 43 | ~1897 |
| Anna Jones | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Polk, Iowa
Son, age 1
Polk, Iowa · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 11
Polk-County, Iowa · implied b. ~1929 — 7 household members
| Surname | Jones |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | 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 Carl Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Carl Jones
Son · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Earl Jones
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Jones
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Jones
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-t0627-01195-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Carper | 40 | Head | Stationary Engr | Iowa |
| 2 | Dorothy Carper | 37 | Wife | — | Iowa |
| 3 | Patricia Carper | 16 | Daughter | — | Iowa |
| 4 | Mitchell Carper | 11 | Son | — | Iowa |
| 5 | Jerry Carper | 5 | Son | — | Iowa |
| 6 | Earl Jones | 43 | Head | Hoisting Eng | Iowa |
| 7 | Anna Jones | 34 | Wife | — | Mo |
| 8 | Earl Jr Jones | 17 | Son | — | Iowa |
| 9 | Richard Jones | 15 | Son | — | Iowa |
| 10 | Carl Jones THIS PERSON | 11 | Son | — | Iowa |
| 11 | Hazel Jones | 8 | Daughter | — | Iowa |
| 12 | Carl Jones | 40 | Brother | Truck Driver | Iowa |
| 13 | Donald Jones | 35 | Head | Tractor Oper | Iowa |
| 14 | Frances Jones | 33 | Wife | — | Iowa |
| 15 | Virginia Jones | 16 | Daughter | — | Iowa |
| 16 | Nora Jones | 14 | Daughter | — | Iowa |
| 17 | Harold Jones | 11 | Son | — | Iowa |
| 18 | Mary King | 52 | Head | Housework | Kansas |
| 19 | Mary King | 17 | Daughter | New Worker | Iowa |
| 20 | Ora King | 14 | Daughter | — | Iowa |
| 21 | T. J. Rossen | 65 | Head | Sew. Carp. | Mo |
| 22 | Hansina Rossen | 67 | Wife | — | Denmark |
| 23 | Henry Clarke | 49 | Boarder | Skilled Lab | Iowa |
| 24 | Florence Clarke | 46 | Boarder | — | Iowa |
| 25 | Fred Rossen | 30 | Son | Landscaper | Iowa |
| 26 | Marchetta Rossen | 16 | Daughter | — | Iowa |
| 27 | — | None | — | — | — |
| 28 | Claude Lattimer | 52 | Head | Laborer | Iowa |
| 29 | Eleanor Lattimer | 50 | Wife | — | Iowa |
| 30 | John Berger | 45 | Head | Truck Driver | Iowa |
| 31 | Alta Berger | 51 | Housekeeper | Housekeeper | Ill |
| 32 | Ed Grandle | 68 | Head | — | Iowa |
| 33 | Ed Jacobs | 31 | Head | Mill Wk | Iowa |
| 34 | Alice Jacobs | 26 | Wife | — | Iowa |
| 35 | L. A. Moore | 24 | Head | Laborer | Iowa |
| 36 | Anita Moore | 20 | Wife | — | Iowa |
| 37 | Wm Carl Moore | 3 | Son | — | Iowa |
| 38 | Richd Moore | 1 | Son | — | Iowa |
| 39 | Allen L. Lewis | 44 | Head | Trucker | Iowa |
| 40 | Margaret Lewis | 43 | Wife | Film Inspector | 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)