About 115,000 people.

Lowell is a historic city built along canals and the Merrimack River, and it was one of the first places in America to have big cloth-making factories. Today it celebrates that history and welcomes families from many countries.
You can ride a trolley and hop on a canal boat at the Lowell National Historical Park. In summer the Lowell Folk Festival fills the streets with music, food, and dancing from all over the world.
Long ago, water from the canals powered giant machines that spun thread and made cloth. Today you can tour the old mills and even see the huge spinning wheels turn again.
Lowell is home to people from many different countries, and its festivals share music, food, and stories from around the globe. The summer folk festival is one of the biggest and most fun in the region.