LS
Lois Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Lois Smith across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents Ernest & Ernest — first a daughter (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Cashier |
| Industry | Theater |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 210 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Cashier |
| Township / Ward | Clinton 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lois | Age | Birth yr |
|---|---|---|---|---|
| Lois Smith | Daughter | — | 24 | ~1916 |
| Ernest Smith | Head | — | 63 | ~1877 |
| Kate Smith | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Clinton, Iowa
Daughter, age 3
Clinton, Iowa · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Daughter, age 14
Clinton, Iowa · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Daughter, age 24
Clinton-County, Iowa · implied b. ~1916 — 3 household members
| Surname | Smith |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Cashier |
| Industry | Theater |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 210 |
| 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 Lois Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ernest Smith (~0.92 confidence) and father Ernest Smith (~0.92 confidence) and mother Katherine Smith (~0.92 confidence) and mother Kate Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ernest Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Ernest Smith
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Katherine Smith
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Kate Smith
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lois Smith
Daughter · 1940 · age 24 · b. ~1916 · 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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01150-00148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 44 | Clarence Findley | 64 | Head | — | Iowa |
| 45 | Louise Findley | 55 | Wife | — | Iowa |
| 46 | Ernest L Smith | 63 | Head | Machine Oper. | Iowa |
| 47 | Kate Smith | 60 | Wife | — | Iowa |
| 48 | Lois Smith THIS PERSON | 24 | Daughter | Cashier | Iowa |
| 49 | Fred Sean | 53 | Head | Barber | Iowa |
| 50 | Sena Sean | 50 | Wife | — | Iowa |
| 51 | Mildred Mrs. Thyne | 51 | Head | Lunch Room | Iowa |
| 52 | Kay Thyne | 22 | Daughter | Waitress | Iowa |
| 53 | Ilene Thyne | 20 | Daughter | Waitress | Iowa |
| 54 | Hans Holm | 62 | Head | Road Work | Iowa |
| 55 | Augusta Holm | 64 | Wife | Cook | Iowa |
| 56 | John Holm | 29 | Son | Ware Houseman | Iowa |
| 57 | Peter Work | 49 | Head | Maintenance | Iowa |
| 58 | Marie Work | 46 | Wife | — | Iowa |
| 59 | Raymond Work | 25 | Son | Sheet Decorator | Iowa |
| 60 | Olaf Jensen | 56 | Head | Plumber | Denmark |
| 61 | Marie Jensen | 49 | Wife | — | Iowa |
| 62 | Robert Jensen | 20 | Son | Plumber | Iowa |
| 63 | Betty Jensen | 19 | Daughter | — | Iowa |
| 64 | Kenneth Slay | 35 | Head | Salesman | Iowa |
| 65 | Helen Slay | 34 | Wife | — | Michigan |
| 66 | Lois Slay | 9 | Daughter | — | Illinois |
| 67 | Ronald Slay | 6 | Son | — | Illinois |
| 68 | John Nielson | 54 | Head | Locomotive Engineer | Denmark |
| 69 | Annie Nielson | 48 | Wife | — | Iowa |
| 70 | Jean Nielson | 8 | Daughter | — | Iowa |
| 71 | Ben Butler | 39 | Head | Carpenter | Missouri |
| 72 | Ethel Butler | 39 | Wife | — | Oklahoma |
| 73 | G E Butler | 90 | Father | — | Missouri |
| 74 | Milo J Hart | 65 | Head | Stone Setter | Illinois |
| 75 | Marie Hart | 57 | Niece | — | Iowa |
| 76 | Margaret Hart | 51 | Niece | Nurse R.W. | Iowa |
| 77 | Head Mary Ross | None | F | — | — |
| 78 | Charles Mary Ross | 36 | Son | Laborer | Iowa |
| 79 | Isaac Vamfer | 46 | Head | — | Iowa |
| 80 | Ralit Rasmussen | 56 | Head | Machine Oper | Denmark |
Pedigree Summary
Lois
Gen 1 · 4 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)