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Louis Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Louis Larson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 7-person household.
Age 58
b. ~1882
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Larson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | digging |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Digging |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1882 |
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 Louis | Age | Birth yr |
|---|---|---|---|---|
| Louis Larson | Head | — | 58 | ~1882 |
| Elmer Larson | Son | — | 25 | ~1915 |
| Carol Larson | Other | — | 2 | ~1938 |
| Ruth Larson | Daughter | — | 15 | ~1925 |
| Anne Larson | Daughter | — | 21 | ~1919 |
| Karen Larson | Spouse | — | 59 | ~1881 |
| Henry Larson | Son | — | 25 | ~1915 |
Census Appearances
1920
Cook, Illinois
Head, age 38
Cook, Illinois · implied b. ~1882 — 34 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth Country | Norway |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | norway |
1930
Cook, Illinois
Head, age 48
Cook, Illinois · implied b. ~1882 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Norway |
| Age at First Marriage | 26 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Iron-worker |
| Industry | Foundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Value / Rent | 4,000 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Cook-County, Illinois
Head, age 58
Cook-County, Illinois · implied b. ~1882 — 7 household members
| Surname | Larson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Occupation | digging |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Louis Larson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Louis Larson
Head · 1940 · age 58 · b. ~1882 · Illinois
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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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00990-00055)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ralph Olsen | 41 | Head | Manager | Norway |
| 42 | Esther Olsen | 37 | Wife | — | Norway |
| 43 | Audrey Olsen | 15 | Daughter | — | Illinois |
| 44 | Edward Schmitt | 53 | Head | Conductor | Illinois |
| 45 | Lillian Schmitt | 52 | Wife | — | Illinois |
| 46 | Harry Strom | 43 | Head | Teamster | Norway |
| 47 | Frieda Strom | 38 | Wife | — | Iowa |
| 48 | Harry Jr. Strom | 16 | Son | — | Illinois |
| 49 | Lois Strom | 6 | Daughter | — | Illinois |
| 50 | Elaine Strom | 1 | Daughter | — | Illinois |
| 51 | Carl Strom | 35 | Brother | Driver | Illinois |
| 52 | Lillie Miller | 52 | Head | — | Illinois |
| 53 | August Jensen | 65 | Lodger | Bricklayer | Denmark |
| 54 | Henry Walker | 46 | Head | Machinist | Illinois |
| 55 | Ellie Walker | 46 | Wife | — | Illinois |
| 56 | Kenneth Walker | 21 | Son | — | Illinois |
| 57 | Donald Walker | 14 | Son | — | Illinois |
| 58 | Christ Sorenson | 48 | Head | Bldg Laborer | Denmark |
| 59 | Catherine Sorenson | 38 | Wife | — | Denmark |
| 60 | James Sorenson | 8 | Son | — | Illinois |
| 61 | Margaret Sorenson | 5 | Daughter | — | Illinois |
| 62 | Sherwin Glazer | 24 | Head | Manager | Illinois |
| 63 | Harriet Glazer | 23 | Wife | Saleslady | Illinois |
| 64 | Clinton Lacy | 33 | Head | Machinist | Wisconsin |
| 65 | Edith Lacy | 29 | Wife | — | New Hampshire |
| 66 | Edith May Lacy | 3 | Daughter | — | Michigan |
| 67 | Louis Larson THIS PERSON | 58 | Head | Digging | Norway |
| 68 | Karen Larson | 59 | Wife | — | Norway |
| 69 | Henry Larson | 25 | Son | Helper | Illinois |
| 70 | Elmer Larson | 25 | Son | Maintenance | Illinois |
| 71 | Anne Larson | 21 | Daughter | Saleslady | Illinois |
| 72 | Ruth Larson | 15 | Daughter | — | Illinois |
| 73 | Carol Lee Larson | 2 | Granddaughter | — | Illinois |
| 74 | Anne Puls | 62 | Head | — | Illinois |
| 75 | Arthur Bunge | 49 | Lodger | Benchworker | Illinois |
| 76 | Fern Bunge | 21 | Lodger | File Clerk | Illinois |
| 77 | Anna Weiss | 59 | Head | — | Illinois |
| 78 | Herbert Weiss | 23 | Son | Maintenance | Illinois |
| 79 | Marie Weiss | 20 | Daughter | Counter Girl | Illinois |
| 80 | Elsie Walker | 46 | — | — | Illinois |
Related Census Records
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)