About 23,000 people.

Watertown is a welcoming city built between two pretty lakes in northeastern South Dakota. Water is a big part of life here, which is how it got its name.
Cool off at the Bramble Park Zoo, splash and boat on Lake Kampeska, and see a real old-fashioned mansion at the Mellette House.
This friendly zoo is home to hundreds of animals from around the world, including big cats, bears and birds, plus a nature center that teaches about wildlife.
With Lake Kampeska and Lake Pelican nearby, families come to swim, fish, boat and picnic along the shores all summer long.