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Melvin Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Melvin Anderson across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Anderson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Barclay Twp |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 350 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Laborer |
| Township / Ward | Barclay Twp |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Melvin | Age | Birth yr |
|---|---|---|---|---|
| John Anderson | Head | — | 75 | ~1865 |
| Aaron Anderson | Son | — | 19 | ~1921 |
| Melvin Anderson | Son | — | 28 | ~1912 |
| Lila Anderson | Daughter | — | 29 | ~1911 |
Census Appearances
1920
Black Hawk, …
Son, age 7
Black Hawk, Iowa · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Melvin J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Son, age 18
Black Hawk, Iowa · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Mother Tongue | 65 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Son, age 28
Black-Hawk-County, Iowa · implied b. ~1912 — 4 household members
| Surname | Anderson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Barclay Twp |
| 1935 Residence (County) | Black Hawk |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 350 |
| Highest Grade | No 8 |
| 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 Melvin Anderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Anderson (~0.92 confidence) and father John Anderson (~0.92 confidence) and father John Anderson (~0.92 confidence) and mother Myrtle Anderson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Anderson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
John Anderson
b. ~1865
Source father
● Household
· direct · ~0.92
Father
John Anderson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Myrtle Anderson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Anderson
Son · 1940 · age 28 · b. ~1912 · Iowa
★ You are viewing this record
Sibling
Aaron Anderson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lila Anderson
Sibling · 1940 · age 29
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 — 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-t0627-01139-00020)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leo Thomsen | 22 | Son | Farm Laborer | Iowa |
| 2 | Elmer Thomsen | 18 | Son | Farm Laborer | Iowa |
| 3 | Elly Thomsen | 15 | Daughter | — | Iowa |
| 4 | John Anderson | 75 | Head | Farmer | Denmark |
| 5 | Melvin Anderson THIS PERSON | 28 | Son | Farm Laborer | Iowa |
| 6 | Lila Anderson | 29 | Daughter | — | Iowa |
| 7 | Aaron Anderson | 19 | Son | Farm Laborer | Iowa |
| 8 | Henry A. Turner | 49 | Head | Farmer | Iowa |
| 9 | Ruby Turner | 42 | Wife | — | Iowa |
| 10 | Theodore Turner | 21 | Son | Farm Laborer | Iowa |
| 11 | Richard Turner | 17 | Son | — | Iowa |
| 12 | Lloyd Turner | 15 | Son | — | Iowa |
| 13 | Donald Turner | 13 | Son | — | Iowa |
| 14 | Robert Turner | 11 | Son | — | Iowa |
| 15 | Ronald Turner | 2 | Son | — | Iowa |
| 16 | Ruby Turner | 2 | Daughter | — | Iowa |
| 17 | Roy Morris | 53 | Head | Farmer | Indiana |
| 18 | Rebecca Morris | 58 | Wife | — | Iowa |
| 19 | Rodney Speer | 41 | Head | Farmer | Iowa |
| 20 | Helen Speer | 39 | Wife | — | Iowa |
| 21 | Marilyn Speer | 16 | Daughter | — | Iowa |
| 22 | Phyllis Speer | 13 | Daughter | — | Iowa |
| 23 | Doris Speer | 11 | Son | — | Iowa |
| 24 | Harriet Speer | 9 | Daughter | — | Iowa |
| 25 | Elgar Speer | 6 | Son | — | Iowa |
| 26 | Robert Speer | 4 | Son | — | Iowa |
| 27 | Leonard Haller | 30 | Head | Farmer | Iowa |
| 28 | Mary Haller | 26 | Wife | — | Iowa |
| 29 | Harold Haller | 4 | Son | — | Iowa |
| 30 | Dean Haller | 3 | Son | — | Iowa |
| 31 | Raymond Haller | 1 | Son | — | Iowa |
| 32 | Rita Haller | 0 | Daughter | — | Iowa |
| 33 | Leonard Miller | 35 | Head | Farmer | Illinois |
| 34 | Marie Miller | 31 | Wife | — | Iowa |
| 35 | Wanda Miller | 8 | Daughter | — | Iowa |
| 36 | Wendell Miller | 4 | Son | — | Iowa |
| 37 | Anthony M. Koster | 52 | Head | Farmer | Iowa |
| 38 | Nellie Koster | 51 | Wife | — | Iowa |
| 39 | Richard Koster | 20 | Son | Farm Laborer | Iowa |
| 40 | Margaret Koster | 17 | Daughter | — | Iowa |
Pedigree Summary
Melvin + 2 siblings
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)