population of portage township, mi
Highlights of the 2010 Census data include: 1  The population of Portage increased from 44,897 in 2000 to 46,262 in 2010, the third highest population gain in the county. 2  The population of the city continues to diversify. In 1990, the minority population was 6% of the total population, which increased to 9.2% in 2000 and to 13.1% in 2010.