Westport is a city located in South Dakota. With a 2020 population of 137, it is the 207th largest city in South Dakota and the 17691st largest city in the United States. Westport is currently growing at a rate of 0.74% annually and its population has increased by 3.01% since the most recent census, which recorded a population of 133 in 2010. Spanning over 0 miles, Westport has a population density of 583 people per square mile.
The average household income in Westport is $59,602 with a poverty rate of 0.00%. The median rental costs in recent years comes to - per month, and the median house value is $58,800. The median age in Westport is 49.1 years, 26.4 years for males, and 49.6 years for females. For every 100 females there are 162.5 males.