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John Simms — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Simms across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Simms |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Delivery Boy |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 52 |
| Highest Grade | No 6 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Delivery Boy |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1921 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| James Simms | Son | — | 16 | ~1924 |
| Charles Simms | Head | — | 53 | ~1887 |
| Charles Simms | Son | — | 20 | ~1920 |
| Dorothy Simms | Daughter | — | 15 | ~1925 |
| Lucille Simms | Daughter | — | 20 | ~1920 |
| John Simms | Son | — | 19 | ~1921 |
| Annie Simms | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Baltimore, Maryland
Son, age 9
Baltimore, Maryland · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simms |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Dist. of Columbia |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 19
Baltimore-City-County, Maryland · implied b. ~1921 — 7 household members
| Surname | Simms |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Delivery Boy |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 52 |
| Highest Grade | No 6 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 John Simms across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Simms
Son · 1940 · age 19 · b. ~1921 · Maryland
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Sibling
Dorothy Simms
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Simms
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Simms
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Simms
Sibling · 1940 · age 16
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01529-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Delores Giggler | 3 | Lodger | — | Maryland |
| 2 | Lillie Hermanson | 40 | Head | Servant | Virginia |
| 3 | Burt Jones | 51 | Lodger | — | Virginia |
| 4 | Edna William | 20 | Lodger | — | Maryland |
| 5 | Virginia Boggs | 11 | Lodger | — | Virginia |
| 6 | Dorothy Boggs | 9 | Lodger | — | Virginia |
| 7 | Delores Hall | 54 | Head | — | Maryland |
| 8 | Agnes Hall | 4 | Daughter | — | Maryland |
| 9 | Florence Hall | 21 | Daughter | — | Maryland |
| 10 | Milton Hall | 17 | Son | Laborer | Maryland |
| 11 | John Hall | 15 | Son | — | Maryland |
| 12 | Ruth Dorsey | 1 | Daughter | — | Maryland |
| 13 | Mary Hall | 56 | Head | Servant | Virginia |
| 14 | Nannie Scott | 63 | Lodger | Servant | Maryland |
| 15 | Charles Simms | 53 | Head | Laborer | Maryland |
| 16 | Annie Simms | 53 | Wife | Servant | Maryland |
| 17 | Charles Simms | 20 | Son | Clerk | Maryland |
| 18 | Lucille Simms | 20 | Daughter | New Worker | Maryland |
| 19 | John Simms THIS PERSON | 19 | Son | Delivery Boy | Maryland |
| 20 | James Simms | 16 | Son | — | Maryland |
| 21 | Dorothy Simms | 15 | Daughter | — | Maryland |
| 22 | Florence Ray | 58 | Head | Servant | Virginia |
| 23 | Mary Reese | 55 | Lodger | Servant | Maryland |
| 24 | Anna A. Brooks | 51 | Lodger | Helper | Maryland |
| 25 | William B. Dorsey | 55 | Head | Proprietor | Maryland |
| 26 | William Sheridan | 24 | Lodger | Odd Jobs | Maryland |
| 27 | John Filbs | 63 | Lodger | Junk Dealer | Maryland |
| 28 | Nathan Austin | 43 | Head | Laborer | South Carolina |
| 29 | Hester Austin | 36 | Wife | — | South Carolina |
| 30 | Lillie Austin | 13 | Daughter | — | Maryland |
| 31 | Margaret Austin | 12 | Daughter | — | Maryland |
| 32 | Creola Austin | 9 | Daughter | — | Maryland |
| 33 | Luke Austin | 7 | Son | — | Maryland |
| 34 | Pearl Garland | 53 | Head | Carpenter | Kentucky |
| 35 | Mary Garland | 37 | Wife | Servant | North Carolina |
| 36 | Henry Warsaw | 29 | Head | Carpenter | North Carolina |
| 37 | Olivemay Warsaw | 24 | Wife | — | North Carolina |
| 38 | Jessie M. Warsaw | 7 | Daughter | — | Washington |
| 39 | William Warsaw | 4 | Son | — | Maryland |
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)