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Leonard Anderson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this Leonard Anderson across the 1920, 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 4-person household.
Age 57
b. ~1883
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Anderson |
| Given Name | Leonard J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Viola |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Viola |
| Est. Birth Year | ~1883 |
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 Leonard | Age | Birth yr |
|---|---|---|---|---|
| Florence Anderson | Spouse | — | 47 | ~1893 |
| Mary Anderson | Daughter | — | 11 | ~1929 |
| Leonard Anderson | Head | — | 57 | ~1883 |
| Virgil Anderson | Son | — | 20 | ~1920 |
Census Appearances
1920
Mercer, Illinois
Head, age 37
Mercer, Illinois · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Leonard J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mercer, Illinois
Head, age 48
Mercer, Illinois · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Leonard J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 36 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mercer-County, Illinois
Head, age 57
Mercer-County, Illinois · implied b. ~1883 — 4 household members
| Surname | Anderson |
| Given Name | Leonard J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Viola |
| 1935 Residence (County) | Mercer |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Leonard Anderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Leonard Anderson
Head · 1940 · age 57 · b. ~1883 · Illinois
★ 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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ladonna E Jacobs | 15 | Daughter | — | Illinois |
| 2 | Edwin E Deblock | 27 | Head | Farmer | Illinois |
| 3 | Kathryn E Deblock | 22 | Wife | — | Illinois |
| 4 | Lewis L Park | 77 | Head | — | Illinois |
| 5 | Lora Park | 68 | Wife | — | Illinois |
| 6 | Frances Mcgrow | 48 | Daughter | — | Illinois |
| 7 | Doris L Mcgrow | 16 | Granddaughter | — | Tennessee |
| 8 | Bernice A Smith | 44 | Niece | Hired Girl | Illinois |
| 9 | Saylor W Robinson | 52 | Head | Farmer | Illinois |
| 10 | Florence L Robinson | 51 | Wife | — | Illinois |
| 11 | Hazel B Robinson | 23 | Daughter | House Work | Illinois |
| 12 | Vernon J Robinson | 20 | Daughter | House Work | Illinois |
| 13 | Merle D Robinson | 18 | Daughter | House Work | Illinois |
| 14 | Darrell J Robinson | 15 | Son | — | Illinois |
| 15 | Robert E Robinson | 11 | Son | — | Illinois |
| 16 | Marion L Robinson | 9 | Son | — | Illinois |
| 17 | Homer O Smith | 48 | Head | Farmer | Illinois |
| 18 | Lettie Smith | 43 | Wife | — | Illinois |
| 19 | Betty L Smith | 16 | Daughter | Housework | Illinois |
| 20 | Wayne L Smith | 10 | Son | — | Illinois |
| 21 | Alfred L Munson | 56 | Head | Farmer | Illinois |
| 22 | Virgie C Munson | 55 | Wife | — | Illinois |
| 23 | Leonard J Anderson THIS PERSON | 57 | Head | Farmer | Illinois |
| 24 | Florence C Anderson | 47 | Wife | — | Illinois |
| 25 | Virgil L Anderson | 20 | Son | Farmer | Illinois |
| 26 | Mary L Anderson | 11 | Daughter | — | Illinois |
| 27 | Johnnie Robson | 44 | Head | Farmer | Illinois |
| 28 | Lois J Robson | 40 | Wife | — | Illinois |
| 29 | Kenneth Peters | 26 | Hired hand | Farm Hand | Illinois |
| 30 | Charles T Cogan | 67 | Head | Farmer | Illinois |
| 31 | Julia J Cogan | 63 | Wife | — | Illinois |
| 32 | Edward M Cogan | 25 | Son | Farm Hand | Iowa |
| 33 | Cecil L Balzer | 43 | Son-in-law | Laborer | Illinois |
| 34 | Frances M Balzer | 29 | Daughter | — | Illinois |
| 35 | Mary F Balzer | 4 | Granddaughter | — | Iowa |
| 36 | Betty L Balzer | 1 | Granddaughter | — | Iowa |
| 37 | Kenneth B Mcclauf | 30 | Head | Laborer | South Dakota |
| 38 | Mary A Mcclauf | 30 | Wife | — | Illinois |
| 39 | Frances J Mcclauf | 7 | Daughter | — | Illinois |
| 40 | Keith Mcclauf | 6 | Son | — | Illinois |
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)