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Andrew Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Andrew Olson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Olson |
| Given Name | Andrew A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Secretary |
| Industry | Stock Yards |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 236 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Secretary |
| Township / Ward | Chicago 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 Andrew | Age | Birth yr |
|---|---|---|---|---|
| Dehos Olson | Son | — | 18 | ~1922 |
| Una Olson | Spouse | — | 44 | ~1896 |
| Andrew Olson | Head | — | 50 | ~1890 |
Census Appearances
1920
Cook, Illinois
Head, age 29
Cook, Illinois · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Andrew |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Insurance Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Denmark |
| Year of Naturalization | 1897 |
| Birthplace (normalized) | denmark |
1930
Cook, Illinois
Head, age 40
Cook, Illinois · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Andrew A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1893 |
| Age at First Marriage | 26 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Hoffman|Hoffman |
| Industry | Traders |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Value / Rent | 10,000 |
| Radio Set | R |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Cook-County, Illinois
Head, age 50
Cook-County, Illinois · implied b. ~1890 — 3 household members
| Surname | Olson |
| Given Name | Andrew A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Secretary |
| Industry | Stock Yards |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 236 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Andrew Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Andrew Olson
Head · 1940 · age 50 · b. ~1890 · 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-t0627-00958-00225)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eleanor Olson | 40 | Wife | — | Sweden |
| 42 | Raymond Olson | 22 | Son | Sales Man | Illinois |
| 43 | Clarence Olson | 45 | Head | Contractor | Illinois |
| 44 | Frieda Olson | 46 | Wife | — | Illinois |
| 45 | Violet Olson | 21 | Daughter | Biller Office | Illinois |
| 46 | Evelyn Olson | 12 | Daughter | — | Illinois |
| 47 | Edith C. Erickson | 60 | Head | — | Illinois |
| 48 | Helen F. Cook | 22 | Lodger | Stenographer | Illinois |
| 49 | Francis J. Mccurrie | 36 | Head | Lawyer | Illinois |
| 50 | Winifred Mccurrie | 35 | Wife | Sub Teacher | Illinois |
| 51 | Mary Mccurrie | 5 | Daughter | — | Illinois |
| 52 | Thomas Mccurrie | 3 | Son | — | Illinois |
| 53 | Anne Anderson | 36 | Maid | Housework | Wisconsin |
| 54 | Earl Ruther | 42 | Head | Compositor | Illinois |
| 55 | Helen Ruther | 37 | Wife | — | Illinois |
| 56 | Katherine Mcguire | 44 | Mother-in-law | Telephone Operator | Illinois |
| 57 | Patrick Lynch | 59 | Head | Motor Man | Irish Free State |
| 58 | Nora Lynch | 59 | Wife | — | Irish Free State |
| 59 | George Lynch | 26 | Son | Shipping Clerk | Illinois |
| 60 | Martin Lynch | 21 | Son | Odd Jobs | Illinois |
| 61 | Eva Lynch | 28 | Daughter | Clerk Office | Indiana |
| 62 | John Lynch | 6 | Grand Son | — | Illinois |
| 63 | Harry E. Stark | 58 | Head | Engineer Stationary | Illinois |
| 64 | Catherine Stark | 55 | Wife | — | Illinois |
| 65 | Helen Stark | 28 | Daughter | — | Illinois |
| 66 | Joseph Stark | 26 | Son | Engineer Stationary | Illinois |
| 67 | Catherine Stark | 24 | Daughter | Chemical | Nebraska |
| 68 | Edward Stark | 22 | Son | Shipping Clerk | Minnesota |
| 69 | Morgan Sullivan | 45 | Head | Turbine Operator | Illinois |
| 70 | Anna Sullivan | 42 | Wife | Coach Teacher | Illinois |
| 71 | Mary Ann Sullivan | 9 | Daughter | — | Illinois |
| 72 | Thomas Sullivan | 7 | Son | — | Illinois |
| 73 | Donna Jean Sullivan | 4 | Daughter | — | Illinois |
| 74 | Thomas F. Reesler | 49 | Head | — | Ohio |
| 75 | Christina Reesler | 50 | Daughter | Branch Manager | Illinois |
| 76 | Sadie Reesler | 45 | Daughter | Instruction Teacher | Illinois |
| 77 | Adeline Reesler | 36 | Daughter | Report To Nurse | Illinois |
| 78 | Andrew A. Olson THIS PERSON | 50 | Head | Secretary | Denmark |
| 79 | Una Olson | 44 | Wife | — | Illinois |
| 80 | Dehos Olson | 18 | Son | Clerk | 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)