Episode 2 of 2

1890 Census

When
1890
Where
United States
Part of
Herman Hollerith patents his electric tabulating machine

Hollerith's tabulating machine was used for the 1890 U.S. census, reducing processing time from eight years to six years.

Clerks used keypunches to punch holes in cards entering age, state of residence, gender, and other information from the returns. The use of Hollerith's electromechanical tabulators significantly reduced the time required to process the census.

Sources

  1. Herman Hollerith Wikipedia, revision of 2026-02-24
  2. Tabulating machine Wikipedia, revision of 2026-06-01

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.