Chapter VII: Portage, p. 240

223.

Portage County.

Bounded north by Marathon; east by Waupaca; south by Waushara, Juneau and Adams; and west by Jackson and Clark. It embraces the townships numbered twenty one to twenty five in ranges two to ten east of the Meridian; the form is regular, length fifty four miles; breadth thirty miles; area forty five townships or sixteen hundred and twenty square miles. Portage county was set off from Brown in 1836, but not fully organized until 1844.

The population at various periods has been as follows:

In 1840 it was 1,623
1842-646
1846-931
1847-1,504
1850-1,250
1855-