JS
Joseph Smith — 1930 US Census Record
Model Tree available1930 United States Federal Census · Dubuque, Iowa
Our Model Tree links this Joseph Smith across the 1910, 1920 and 1930 US Censuses in Dubuque, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1910), then head of a 5-person household.
Age 20
b. ~1910
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dubuque, Iowa |
| Surname | Smith |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Deliveryman |
| Industry | Meat market |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Deliveryman |
| Township / Ward | Dubuque City |
| Est. Birth Year | ~1910 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Alice Smith | Daughter | — | 22 | ~1908 |
| Thomas Smith | Head | — | 55 | ~1875 |
| Mary Smith | Other | — | 55 | ~1875 |
| Joseph Smith | Son | — | 20 | ~1910 |
| Thomas Smith | Son | — | 15 | ~1915 |
Census Appearances
1910
Dubuque, Iowa
Son, age 1
Dubuque, Iowa · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Dubuque, Iowa
Son, age 10
Dubuque, Iowa · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 20
Dubuque, Iowa · implied b. ~1910 — 5 household members
| Surname | Smith |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Deliveryman |
| Industry | Meat market |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Joseph Smith across 3 US Census years (1910, 1920 and 1930) in Dubuque, Iowa, using XGBoost record linkage. Identified parents: father John Smith (~0.92 confidence) and father John Smith (~0.92 confidence) and father Thomas Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Smith
b. ~1870
Source father
● Household
· direct · ~0.92
Father
John Smith
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Thomas Smith
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Smith
Son · 1930 · age 20 · b. ~1910 · Iowa
★ You are viewing this record
Sibling
Alice Smith
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Smith
Sibling · 1930 · age 15
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
1930 US Federal Census — Dubuque, Iowa
Open full size
1930 US Federal Census — Dubuque, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel653:1079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Agnella Swerndl | 16 | Daughter | — | Iowa |
| 52 | Milton Swerndl | 14 | Son | — | Iowa |
| 53 | Frank Gensack | 35 | Head | Agent | Iowa |
| 54 | Marie Gensack | 37 | Wife-H | — | Iowa |
| 55 | Ralph Gensack | 9 | Son | — | Iowa |
| 56 | Paul George | 62 | Head | Labourer | Germany |
| 57 | Mae George | 61 | Wife-H | — | Illinois |
| 58 | Paulina Bruhn | 72 | Sister-in-law | — | Wisconsin |
| 59 | Margaret Hocking | 83 | Head | — | England |
| 60 | Fred Hocking | 45 | Son | Laborer | Iowa |
| 61 | Thomas Smith | 55 | Head | — | Iowa |
| 62 | Mary Smith | 55 | Wife-H | — | Iowa |
| 63 | Alice Smith | 22 | Daughter | Saleslady | Iowa |
| 64 | Joseph Smith THIS PERSON | 20 | Son | Deliveryman | Iowa |
| 65 | Thomas Smith | 15 | Son | — | Iowa |
| 66 | Frank Henry | 32 | Head | Grocer | Iowa |
| 67 | Eleanor Henry | 30 | Wife-H | — | Iowa |
| 68 | James Henry | 9 | Son | — | Iowa |
| 69 | Maybeth Henry | 8 | Daughter | — | Iowa |
| 70 | Gloria Henry | 1 | Daughter | — | Iowa |
| 71 | Arnold Dietrich | 30 | Head | Proprietor | Iowa |
| 72 | Gertrude Dietrich | 31 | Wife-H | — | Iowa |
| 73 | Dorothy Dietrich | 7 | Daughter | — | Iowa |
| 74 | Robert Dietrich | 3 | Son | — | Iowa |
| 75 | Anna Ahrendt | 63 | Mother-in-law | — | Iowa |
| 76 | Henry Frost | 40 | Head | Sheet Metal Worker | Iowa |
| 77 | Josephine Frost | 41 | Wife-H | — | Iowa |
| 78 | Robert Frost | 12 | Son | — | Iowa |
| 79 | Virginia Frost | 10 | Daughter | — | Iowa |
| 80 | Lorraine Frost | 6 | Daughter | — | Iowa |
| 81 | Charles Frost | 1 | Son | — | Iowa |
| 82 | William Haverland | 43 | Head | Plasterer | Iowa |
| 83 | Elvira Haverland | 20 | Daughter | Stenographer | Iowa |
| 84 | William Haverland | 14 | Son | — | Iowa |
| 85 | Alma Haverland | 57 | Wife-H | Laborer | Iowa |
| 86 | Ralph Musfelt | 28 | Head | — | Iowa |
| 87 | Alma Musfelt | 27 | Wife-H | Gardener | Wisconsin |
| 88 | Annie Heinze | 57 | Head | Watchman | Wisconsin |
| 89 | George E. Kline | 55 | Head | — | Iowa |
| 90 | Minnie B. Kline | 49 | Wife-H | — | Ohio |
| 91 | Genevieve Kline | 18 | Daughter | Sheet Metal Worker | Iowa |
| 92 | Donald S. Kline | 21 | R | — | Iowa |
| 93 | Dorothy B. Kline | 21 | Wife-H | Agent | Wisconsin |
| 94 | Theodore Chase | 42 | R | — | New York |
| 95 | Hyacinth Chase | 39 | Wife-H | — | Wisconsin |
| 96 | Lillian Chase | 14 | Daughter | — | Illinois |
| 97 | Theda B. Chase | 13 | Daughter | — | Illinois |
| 98 | Vincent Chase | 10 | Son | — | Iowa |
| 99 | Eleanor Chase | 8 | Daughter | — | Iowa |
| 100 | Rosarie Chase | 5 | Daughter | — | Iowa |
Related Census Records
Pedigree Summary
Joseph + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)