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William Riley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this William Riley across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 3-person household.
Age 68
b. ~1872
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boulder City |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Custodian |
| Industry | Univ. building |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1140 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Custodian |
| Township / Ward | Boulder City |
| Est. Birth Year | ~1872 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Emilie Riley | Daughter | — | 36 | ~1904 |
| William Riley | Head | — | 68 | ~1872 |
| Ida Riley | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Boulder, Colorado
Head, age 46
Boulder, Colorado · implied b. ~1874 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Boulder, Colorado
Head, age 57
Boulder, Colorado · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 29 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Janitor |
| Industry | State University |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1,500 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Boulder-County, Colorado
Head, age 68
Boulder-County, Colorado · implied b. ~1872 — 3 household members
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boulder City |
| 1935 Residence (County) | Boulder |
| Occupation | Custodian |
| Industry | Univ. building |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1140 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 William Riley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Riley
Head · 1940 · age 68 · b. ~1872 · Colorado
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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 — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00811)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jennie A. Greene | 52 | Wife | — | Missouri |
| 2 | Mary F. Selleck | 73 | Mother-in-law | — | Iowa |
| 3 | Elizabeth F. Selleck | 49 | Sister-in-law | Sub-Man | New Mexico |
| 4 | James R. Walter | 39 | Head | Salesman | Kansas |
| 5 | Helen C. Walter | 42 | Wife | Teacher - H. Ec. | Iowa |
| 6 | Roberta L. Walter | 13 | Daughter | — | Montana |
| 7 | Ernest James | 39 | Head | Laborer | Colorado |
| 8 | Josephine James | 30 | Wife | — | Oklahoma |
| 9 | Rillian M. James | 14 | Daughter | — | Colorado |
| 10 | Dorothy L. James | 11 | Daughter | — | Oklahoma |
| 11 | Raymond E. James | 10 | Son | — | Arizona |
| 12 | Melvin W. James | 8 | Son | — | Colorado |
| 13 | Charles G. James | 6 | Son | — | Colorado |
| 14 | Jeanette F. James | 4 | Daughter | — | Colorado |
| 15 | Christian F. Recht | 40 | Head | Teacher | Ohio |
| 16 | Winifred Recht | 39 | Wife | — | Illinois |
| 17 | Betty Recht | 15 | Daughter | — | Colorado |
| 18 | Carolyn Recht | 14 | Daughter | — | Colorado |
| 19 | William Riley THIS PERSON | 68 | Head | Custodian | Massachusetts |
| 20 | Ida Emilie Riley | 63 | Wife | Assistant Cust. | Switzerland |
| 21 | Emilie Ida Riley | 36 | Daughter | Stenographer | England |
| 22 | Harry A. Alexander | 40 | Head | Medical Doctor | Indiana |
| 23 | Rebecka Alexander | 36 | Wife | — | Kansas |
| 24 | John T. Alexander | 5 | Son | — | Colorado |
| 25 | Charles Alexander | 2 | Son | — | Colorado |
| 26 | Josephine Peacock | 24 | Maid | Maid | Montana |
| 27 | Grace A. Billig | 54 | Head | — | Colorado |
| 28 | Albert W. Logan | 48 | Head | Probation Officer | Nebraska |
| 29 | Carrie G. Logan | 71 | Mother | — | Illinois |
| 30 | Glenn E. Obert | 16 | Nephew | — | Kansas |
| 31 | Oliver J. Taylor | 52 | Head | Optometrist | Nebraska |
| 32 | Bertha H. Taylor | 41 | Wife | — | Nebraska |
| 33 | Pauline Rosenberg | 62 | Head | — | Iowa |
| 34 | John H. Gibson | 49 | Head | Banker | Colorado |
| 35 | Edith M. Gibson | 49 | Wife | — | Colorado |
| 36 | Wendell B. Wickstrom | 44 | Head | Manager | Wyoming |
| 37 | Mabel F. Wickstrom | 47 | Wife | — | Iowa |
| 38 | Herbert C. Shotwell | 57 | Head | Mining Engineer | Ohio |
| 39 | Marian C. Shotwell | 57 | Wife | — | Nebraska |
| 40 | Jeane C. Shotwell | 16 | Daughter | — | Michigan |
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)