CS
Clyde Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Clyde Smith across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 5-person household.
Age 59
b. ~1881
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Smith |
| Given Name | Clyde A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1881 |
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 Clyde | Age | Birth yr |
|---|---|---|---|---|
| Clyde Smith | Head | — | 59 | ~1881 |
| Anna Olinnerty | Other | — | 74 | ~1866 |
| Robert Smith | Son | — | 17 | ~1923 |
| Donald Smith | Son | — | 26 | ~1914 |
| Emma Smith | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Black Hawk, …
Head, age 39
Black Hawk, Iowa · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Clyde |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Wisconsin |
| Occupation | Letter Carrier |
| Industry | Government |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Head, age 49
Black Hawk, Iowa · implied b. ~1881 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Clyde A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 31 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Wisconsin |
| Occupation | Letter Carrier |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Head, age 59
Black-Hawk-County, Iowa · implied b. ~1881 — 5 household members
| Surname | Smith |
| Given Name | Clyde A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Income (1939) | 0 |
| 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 Clyde Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Clyde Smith
Head · 1940 · age 59 · b. ~1881 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-01123)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred F. Bright | 22 | Wife | — | Iowa |
| 2 | Marlys J. Bright | 0 | Daughter | — | — |
| 3 | Cameron Dawson | 24 | Head | Salesman | Iowa |
| 4 | Hazel D. Dawson | 20 | Wife | — | Iowa |
| 5 | Beverly A. Dawson | 5 | Daughter | — | — |
| 6 | Martin H. Mindham | 36 | Head | Grinder | Iowa |
| 7 | Eva M. Mindham | 38 | Wife | Housework | Iowa |
| 8 | Harold D. Hairall | 62 | Head | — | Iowa |
| 9 | Mary E. Hairall | 59 | Wife | — | Iowa |
| 10 | William B. Hartley | 62 | Head | Consulting Engineer | Illinois |
| 11 | Jessie A. Hartley | 59 | Wife | — | Illinois |
| 12 | Mike Zegaras | 29 | Head | Salesman | Iowa |
| 13 | Frances M. Zegaras | 23 | Wife | — | Iowa |
| 14 | Sandra M. Zegaras | 3 | Daughter | — | — |
| 15 | Atwood L. Bradley | 68 | Head | Proprietor | Iowa |
| 16 | Lorena D. Bradley | 66 | Wife | — | Iowa |
| 17 | Harold L. Bradley | 35 | Son | Salesman | Iowa |
| 18 | John M. Davis | 39 | Son-in-law | Broker | Kansas |
| 19 | Marjory D. Davis | 31 | Daughter | — | Iowa |
| 20 | G. Ben Former | 39 | Head | Proprietor | Iowa |
| 21 | Charlotte Former | 37 | Wife | — | Iowa |
| 22 | Wilbur D. Albright | 30 | Head | Foreman-Shop | Iowa |
| 23 | Edith L. W. Albright | 26 | Wife | — | Iowa |
| 24 | Anthony D. Palmer | 29 | Head | Sausage Stuffer | Iowa |
| 25 | Marcella K. Palmer | 23 | Wife | Plant Maid | Iowa |
| 26 | Arlene M. Palmer | 0 | Daughter | — | — |
| 27 | Margaret J. Trewin | 19 | Housekeeper | Housekeeper | Iowa |
| 28 | Alda E. Llewellyn | 25 | Sister | — | Iowa |
| 29 | Clyde A. Smith THIS PERSON | 59 | Head | — | Iowa |
| 30 | Emma L. Smith | 57 | Wife | — | Iowa |
| 31 | Donald L. Smith | 26 | Son | Office Manager | Iowa |
| 32 | Robert L. Smith | 17 | Son | — | Iowa |
| 33 | Anna C. Olinnerty | 74 | Lodger | — | Eire |
| 34 | Elmer H. Mc Donald | 47 | Head | Stock Room | Iowa |
| 35 | Anna E. Mc Donald | 47 | Wife | — | Illinois |
| 36 | Dennis K. Mc Donald | 20 | Son | Art Editor Of Annual | Iowa |
| 37 | William H. Graif | 28 | Head | Salesman | Minnesota |
| 38 | Margaret M. Graif | 22 | Wife | — | Iowa |
| 39 | Bertram S. Bickford | 25 | Head | Machinist | Iowa |
| 40 | Pearl A. Bickford | 29 | Wife | — | 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)