1930 United States census
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The 1930 United States census, conducted by the Census Bureau one month from April 1, 1930, determined the resident population of the United States to be 122,775,046, an increase of 13.7 percent over the 106,021,537 persons enumerated during the... Wikipedia
Start date: April 1, 1930
Location: United States
Least populous state: Nevada; 91,058
Most populous state: New York; 12,588,066
Total population: 122,775,046 (13.7%)