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Lois Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jasper-County, Iowa
Our Model Tree links this Lois Clark across the 1930 and 1940 US Censuses in Jasper-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 7-person household.
Age 16
b. ~1924
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jasper-County, Iowa |
| Surname | Clark |
| Given Name | Lois B. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie City Town |
| 1935 Residence (County) | Jasper |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Prairie City Town |
| Est. Birth Year | ~1924 |
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 Lois | Age | Birth yr |
|---|---|---|---|---|
| Lavonne Clark | Daughter | — | 5 | ~1935 |
| K Clark | Son | — | 15 | ~1925 |
| Duane Clark | Son | — | 7 | ~1933 |
| Kenneth Clark | Head | — | 40 | ~1900 |
| Lowell Clark | Son | — | 2 | ~1938 |
| Lois Clark | Daughter | — | 16 | ~1924 |
| Blanche Clark | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Jasper, Iowa
Daughter, age 6
Jasper, Iowa · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Lois B |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jasper-County, Iowa
Daughter, age 16
Jasper-County, Iowa · implied b. ~1924 — 7 household members
| Surname | Clark |
| Given Name | Lois B. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie City Town |
| 1935 Residence (County) | Jasper |
| Hours Worked | 0 |
| Highest Grade | Hs 2 |
| 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 Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Clark
Daughter · 1940 · age 16 · b. ~1924 · Iowa
★ You are viewing this record
Sibling
Duane Clark
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lavonne Clark
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
K Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lowell Clark
Sibling · 1940 · age 2
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 — Jasper-County, Iowa
Open full size
1940 US Federal Census — Jasper-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01169-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert G. Patterson | 8 | son | — | Iowa |
| 2 | Jerry C. Baldwin | 77 | Head | — | Pennsylvania |
| 3 | Lulu M. Baldwin | 54 | daughter | — | Nebraska |
| 4 | Hazel F. Chandler | 57 | Head | — | Kansas |
| 5 | Dirk J. Ryswyk | 78 | Head | — | Holland |
| 6 | Henry Hawkins | 50 | Head | Carpenter | Illinois |
| 7 | Laura Hawkins | 49 | wife | Cook | Iowa |
| 8 | Maxine Hawkins | 23 | daughter | Assistant | Iowa |
| 9 | Delbert Hawkins | 21 | son | Laborer | Iowa |
| 10 | Kenneth L. Clark | 40 | Head | Trucker | Iowa |
| 11 | Blanche Clark | 41 | wife | — | Iowa |
| 12 | Lois B. Clark THIS PERSON | 16 | daughter | — | Iowa |
| 13 | K. Dale Clark | 15 | son | — | Iowa |
| 14 | Duane L. Clark | 7 | son | — | Iowa |
| 15 | Lavonne Clark | 5 | daughter | — | Iowa |
| 16 | Lowell P. Clark | 2 | son | — | Iowa |
| 17 | John J. Farver | 53 | Head | Trucker | Nebraska |
| 18 | Viola Farver | 54 | wife | — | Nebraska |
| 19 | Alberta M. Farver | 20 | daughter | Teacher | Nebraska |
| 20 | James R. Farver | 15 | son | — | Iowa |
| 21 | Lida C. Cadwallader | 70 | Head | — | Iowa |
| 22 | Dora A. Milleson | 69 | sister | — | Iowa |
| 23 | Jacob Robouwman | 72 | Head | — | Holland |
| 24 | Effie Robouwman | 72 | wife | — | Holland |
| 25 | Gerrit Nugteren | 28 | grandson | Trucker | Iowa |
| 26 | Martha C. Terry | 71 | Head | — | Iowa |
| 27 | May N. Williams | 32 | son-in-law | Trucker | Iowa |
| 28 | Edith G. Williams | 32 | daughter | — | Iowa |
| 29 | Percy B. Conley | 55 | Head | Machinist | Iowa |
| 30 | Blanche Conley | 51 | wife | — | Iowa |
| 31 | Henry J. De Graff | 55 | Head | Agent | Iowa |
| 32 | Ora De Graff | 51 | wife | — | Iowa |
| 33 | Lee L. Prentice | 28 | Head | Yard Man | Iowa |
| 34 | Anna M. Prentice | 27 | wife | — | Iowa |
| 35 | Carl A. Higgins | 47 | Head | — | Illinois |
| 36 | Bertha D. Higgins | 51 | wife | — | Iowa |
| 37 | Carl A. Higgins | 15 | son | — | Iowa |
| 38 | William F. Liles | 74 | Head | — | Illinois |
| 39 | Lillian M. Liles | 70 | wife | — | Iowa |
| 40 | Cassius F. Kiddle | 72 | Head | Proprietor | 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)