RC
Ruth Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Ruth Carlson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Edwin & Claus — first a daughter (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Carlson |
| Given Name | Ruth Emma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1916 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Julia Carlson | Other | — | 15 | ~1925 |
| Harold Carlson | Son | — | 21 | ~1919 |
| Emma Carlson | Daughter | — | 49 | ~1891 |
| Helen Carlson | Daughter | — | 23 | ~1917 |
| Edwin Carlson | Head | — | 50 | ~1890 |
| Dorothy Carlson | Daughter | — | 20 | ~1920 |
| Robert Carlson | Son | — | 17 | ~1923 |
| Ruth Carlson | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Polk, Iowa
Daughter, age 4
Polk, Iowa · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Wisconsin |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 14
Polk, Iowa · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 24
Polk-County, Iowa · implied b. ~1916 — 8 household members
| Surname | Carlson |
| Given Name | Ruth Emma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | H 4 |
| 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 Ruth Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edwin Carlson (~0.92 confidence) and father Claus Carlson (~0.92 confidence) and mother Emma Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edwin Carlson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Claus Carlson
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Emma Carlson
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Carlson
Daughter · 1940 · age 24 · b. ~1916 · Iowa
★ You are viewing this record
Sibling
Harold Carlson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Carlson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Carlson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Carlson
Sibling · 1940 · age 49
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Carlson
Sibling · 1940 · age 23
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-t0627-01193-00191)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | M. Virginia York | 23 | Daughter | School Teacher | Iowa |
| 42 | Janet B. York | 20 | Daughter | — | Iowa |
| 43 | Barbara J. York | 13 | Daughter | — | Iowa |
| 44 | L. Elizabeth York | 8 | Son | — | Iowa |
| 45 | Ole Helgeland | 39 | Head | Laborer | Norway |
| 46 | Anna Helgeland | 34 | Wife | — | Norway |
| 47 | Oddfrid Helgeland | 13 | Daughter | — | Norway |
| 48 | Ivory S. Fisher | 61 | Head | — | Iowa |
| 49 | Mary Jean Fisher | 15 | Daughter | — | Iowa |
| 50 | Merlin Collett Fisher | 22 | Head | Custodian | Iowa |
| 51 | Anna Mae Fisher | 21 | Wife | — | Iowa |
| 52 | Patty Ann Fisher | 0 | Daughter | — | Iowa |
| 53 | Frank Tennis | 54 | Head | Clerical Work | Iowa |
| 54 | Hermine Tennis | 41 | Wife | — | Austria |
| 55 | Arline Tennis | 19 | Daughter | — | Iowa |
| 56 | Blaine Tennis | 14 | Son | — | Iowa |
| 57 | Pauline Tennis | 11 | Daughter | — | Iowa |
| 58 | Blanchard Preston | 47 | Head | Lawyer | Iowa |
| 59 | Florence Preston | 43 | Wife | — | Iowa |
| 60 | Harold Rice | 31 | Head | Laborer | Colorado |
| 61 | Bessie Rice | 30 | Wife | — | Iowa |
| 62 | Charlotte Rice | 12 | Daughter | — | Iowa |
| 63 | Richard Rice | 9 | Son | — | Iowa |
| 64 | Gary Rice | 6 | Son | — | Iowa |
| 65 | Benny Rice | 3 | Son | — | Iowa |
| 66 | Jimmie Rice | 1 | Son | — | Iowa |
| 67 | Dora E. Busby | 69 | Head | — | Kansas |
| 68 | John Busby | 38 | Son | Office Clerk | Iowa |
| 69 | Felix Dividdio | 64 | Head | — | Italy |
| 70 | Rose Dividdio | 55 | Wife | — | Italy |
| 71 | Paul Dividdio | 29 | Son | Salesman | Iowa |
| 72 | Louis Dividdio | 21 | Son | — | Iowa |
| 73 | Edwin C. Carlson | 50 | Head | Superintendent | Iowa |
| 74 | Emma A. Carlson | 49 | Daughter | — | Wisconsin |
| 75 | Ruth Emma Carlson THIS PERSON | 24 | Daughter | — | Iowa |
| 76 | Helen Louise Carlson | 23 | Daughter | Clerical | Iowa |
| 77 | Harold Edwin Carlson | 21 | Son | — | Iowa |
| 78 | Dorothy Caroline Carlson | 20 | Daughter | Machine Operator | Wisconsin |
| 79 | Robert Dick Carlson | 17 | Son | — | Iowa |
| 80 | Julia Josephine Carlson | 15 | Niece | — | Iowa |
Pedigree Summary
Ruth + 5 siblings
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)