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Fred Adams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Fred Adams across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Adams |
| Given Name | Fred O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Electrician |
| Industry | Private |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 1560 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Electrician |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1890 |
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 Fred | Age | Birth yr |
|---|---|---|---|---|
| Fred Adams | Head | — | 50 | ~1890 |
| Mary Adams | Spouse | — | 50 | ~1890 |
| Fred Adams | Son | — | 18 | ~1922 |
Census Appearances
1920
Black Hawk, …
Head, age 29
Black Hawk, Iowa · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Fred D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Occupation | Manager |
| Industry | Wholesale Paper |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Black Hawk, …
Head, age 40
Black Hawk, Iowa · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 21 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Occupation | Manager |
| Industry | Wholesale Paper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 20000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Black-Hawk-County, Iowa
Head, age 50
Black-Hawk-County, Iowa · implied b. ~1890 — 3 household members
| Surname | Adams |
| Given Name | Fred O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Occupation | Electrician |
| Industry | Private |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 1560 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Fred Adams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Fred Adams
Head · 1940 · age 50 · b. ~1890 · 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 — 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-t0627-01140-00903)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frances M Voils | 23 | Daughter | Clerk | Iowa |
| 42 | Fred O Adams THIS PERSON | 50 | Head | Electrician | Michigan |
| 43 | Mary E Adams | 50 | Wife | — | Illinois |
| 44 | Fred L Adams | 18 | Son | — | Iowa |
| 45 | Edward D Kughn | 52 | Head | Accountant | Iowa |
| 46 | Nellie M Kughn | 49 | Wife | — | Iowa |
| 47 | Katherine M Rogers | 43 | Lodger | Art Teacher | Iowa |
| 48 | Clarice Mcdonald | 43 | Lodger | Bookkeeper | Indiana |
| 49 | Ellen Wanser | 52 | Lodger | — | England |
| 50 | Marjorie Andrey | 21 | Lodger | Houseworker | Nebraska |
| 51 | Gladys Andrey | 19 | Lodger | Houseworker | Nebraska |
| 52 | Edward H Shephard | 60 | Head | Store Keeper | Illinois |
| 53 | Ora D Shephard | 53 | Wife | — | Illinois |
| 54 | Martha Merrill | 44 | Lodger | Teacher | Iowa |
| 55 | Mary E Illingsworth | 83 | Head | — | Iowa |
| 56 | William P Kersten | 66 | Head | Merchant | Iowa |
| 57 | Clara W Kersten | 60 | Wife | — | Iowa |
| 58 | Herbert M Read | 79 | Head | — | Iowa |
| 59 | Frances Read | 61 | Wife | — | Ohio |
| 60 | Harriet A Richert | 49 | Housekeeper | Housekeeper | Iowa |
| 61 | Glenn W Miller | 39 | Head | Salesman | Iowa |
| 62 | Eleanor H Miller | 32 | Wife | — | Iowa |
| 63 | Donald G Miller | 15 | Son | — | Iowa |
| 64 | Robert H Miller | 12 | Son | — | Iowa |
| 65 | Lois R Miller | 2 | Daughter | — | Iowa |
| 66 | Elnora M Marquis | 68 | Head | Proprietor | Iowa |
| 67 | Lloyd H Miller | 44 | Lodger | Salesman | Iowa |
| 68 | Ray E Malley | 17 | Lodger | — | Iowa |
| 69 | Edith Martin | 51 | Lodger | Clerk | Illinois |
| 70 | Helen L Staley | 37 | Lodger | Bookkeeper | Iowa |
| 71 | Louis Schroeder | 58 | Lodger | — | Iowa |
| 72 | Carl Burgerson | 30 | Lodger | Salesman | Iowa |
| 73 | Margaret L Burgerson | 30 | Lodger | Saleslady | Ireland |
| 74 | Alice M Morrissey | 48 | Lodger | Press Operator | Iowa |
| 75 | Virgil Morrissey | 14 | Lodger | — | Iowa |
| 76 | Mildred Morrissey | 12 | Lodger | — | Iowa |
| 77 | Dale M Bailey | 25 | Head | Painter | Iowa |
| 78 | Margaret M Bailey | 26 | Wife | — | Iowa |
| 79 | Larry L Madley | 25 | Head | Truck Driver | Minnesota |
| 80 | Helen L Madley | 27 | Wife | — | Nebraska |
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)