Vigo Township is one of ten townships in Knox County, Indiana. As of the 2020 census, its population was 4,083 (up from 4,031 at 2010) and it contained 2,095 housing units.

Historical population

Census	Pop.	Note	%±
1890	3,428		—
1900	4,095		19.5%
1910	5,860		43.1%
1920	10,385		77.2%
1930	7,916		−23.8%
1940	7,808		−1.4%
1950	7,036		−9.9%
1960	6,067		−13.8%
1970	5,635		−7.1%
1980	5,513		−2.2%
1990	4,666		−15.4%
2000	4,798		2.8%
2010	4,031		−16.0%
2020	4,083		1.3%
Source: US Decennial Census

History

Vigo Township was established in 1837. It was named for Col. François Vigo.

Geography

According to the 2010 census, the township has a total area of 67.11 square miles (173.8 km), of which 66.13 square miles (171.3 km) (or 98.54%) is land and 0.97 square miles (2.5 km) (or 1.45%) is water.

Education

Vigo Township residents may obtain a free library card from the Bicknell-Vigo Township Public Library.