GJ
George Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this George Jacobs across the 1920, 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 2-person household.
Age 79
b. ~1861
Male
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Jacobs |
| Given Name | George Oliver |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cedar Rapids |
| Est. Birth Year | ~1861 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| George Jacobs | Head | — | 79 | ~1861 |
| Anna Jacobs | Daughter | — | 57 | ~1883 |
Census Appearances
1920
Linn, Iowa
Head, age 59
Linn, Iowa · implied b. ~1861 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | George |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Capper |
| Industry | Packing House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Linn, Iowa
Head, age 69
Linn, Iowa · implied b. ~1861 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | George H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Linn-County, Iowa
Head, age 79
Linn-County, Iowa · implied b. ~1861 — 2 household members
| Surname | Jacobs |
| Given Name | George Oliver |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| 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 George Jacobs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
George Jacobs
Head · 1940 · age 79 · b. ~1861 · Iowa
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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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01176-00663)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Kadlec | 23 | Head | Laborer | Wisconsin |
| 2 | Gwendoylen Kadlec | 20 | Wife | — | Iowa |
| 3 | Steven Kadlec | 0 | Son | — | Iowa |
| 4 | Louise M. Plotz | 29 | Head | Laborer | Iowa |
| 5 | Louise Kathryn Plotz | 3 | Daughter | — | Iowa |
| 6 | Joseph Alfred Plotz | 1 | Son | — | Iowa |
| 7 | Julia A. Melsha | 53 | Mother | Housemaid | Iowa |
| 8 | Anna Simon | 76 | Head | — | Bohemia |
| 9 | Frank G. Simon | 51 | Son | Odd Jobs | Iowa |
| 10 | Victoria Davis | 44 | Head | Saleswoman | Iowa |
| 11 | Benjamin Davis | 17 | Son | — | Iowa |
| 12 | Gene G. Davis | 15 | Son | — | Iowa |
| 13 | Theodore L. Pettit | 26 | Head | Laborer | Iowa |
| 14 | Marie M. Pettit | 20 | Wife | — | Iowa |
| 15 | Theodore Gene Pettit | 1 | Son | — | Iowa |
| 16 | Judith Ann Pettit | 0 | Daughter | — | Iowa |
| 17 | John Malek | 50 | Head | Truck Driver | Iowa |
| 18 | Anna B. Malek | 48 | Wife | — | Iowa |
| 19 | John Blazej | 73 | Father-in-law | — | Czechoslovakia |
| 20 | Margerete Besta | 14 | Niece | — | Minnesota |
| 21 | Marie Besta | 12 | Niece | — | Minnesota |
| 22 | George Oliver Jacobs THIS PERSON | 79 | Head | — | Illinois |
| 23 | Anna R. Jacobs | 57 | Daughter | — | Iowa |
| 24 | Rosa Iwab | 63 | Head | — | Iowa |
| 25 | Velma Iwab | 28 | Daughter | — | Iowa |
| 26 | Ruth G. Iwab | 25 | Daughter | Attendant Playground | Iowa |
| 27 | Samuel O. Burnett | 36 | Head | Machinist | Michigan |
| 28 | Helen A. Burnett | 22 | Wife | — | Iowa |
| 29 | Mary Gehm | 66 | Head | Seamstress | Iowa |
| 30 | Frances Marie Trublicek | 21 | Granddaughter | Stenographer | Iowa |
| 31 | F. G. Hulen | 41 | Head | Tavern | Missouri |
| 32 | Gladys Hulen | 31 | Wife | Waitress | Iowa |
| 33 | Clarence H. Lisenbee | 32 | Head | Laborer | Illinois |
| 34 | Mildred A. Lisenbee | 28 | Wife | — | Missouri |
| 35 | Mary J. Lisenbee | 9 | Daughter | — | Iowa |
| 36 | Robert L. Lisenbee | 5 | Son | — | Iowa |
| 37 | Edward Bohren | 32 | Head | Bus Operator | Iowa |
| 38 | Florence Bohren | 25 | Wife | — | Iowa |
| 39 | Barbara Fay Bohren | 5 | Daughter | — | Iowa |
| 40 | Derward D. Mcgraw | 29 | Lodger | Mechanic | Iowa |
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)