Pentwater is a city located in Michigan. With a 2020 population of 858, it is the 371st largest city in Michigan and the 10962nd largest city in the United States. Pentwater is currently growing at a rate of 0.23% annually and its population has increased by 0.12% since the most recent census, which recorded a population of 857 in 2010. Pentwater reached it's highest population of 859 in 2010. Spanning over 2 miles, Pentwater has a population density of 641 people per square mile.
The average household income in Pentwater is $68,769 with a poverty rate of 14.68%. The median rental costs in recent years comes to $688 per month, and the median house value is $230,700. The median age in Pentwater is 62.4 years, 63.4 years for males, and 61.4 years for females. For every 100 females there are 90.9 males.