Mars is a city located in Plymouth County, in the state of Iowa (IA), United States. Nestled in the West North Central division of the Midwest region, it covers an area of 6.8 square miles (18.0 km²) and sits at an elevation of 1231 ft. With a population of approximately 9,237 residents, Mars offers a peaceful, rural atmosphere.
The town's population is composed of about 48% males and 52% females, and it has a population density of 356.39 people per square mile (523.70/km²). Mars lies at a latitude of 42.79 and a longitude of -96.17, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (6.8%), followed by English (6.3%), German (49.1%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 51031.