About 69,000 people.

Gaithersburg is a diverse and welcoming city in Montgomery County with people from all over the world. It blends a cozy old town with modern shopping and science labs.
You can shop and eat at the Rio Lakefront, visit the fun water play areas, and explore hands-on exhibits at the community museum.
The Rio Lakefront is a shopping area built around a pretty lake with fountains. Families walk the boardwalk, ride paddle boats, and enjoy ice cream by the water.
Gaithersburg is home to families from many countries, so you can taste foods and hear languages from around the globe. Festivals celebrate this rich mix all year.