The center of Mirror Lake village is the junction of Tuftonboro Neck Road with the Governor Wentworth Highway.

At one time Mirror Lake had a mill and a general store named "Ernest B. Piper, Groceries and Stuff" which closed in 1969.

The small village of Union Wharf lies just north of Mirror Lake, centered on an old dock and marina in 19 Mile Bay.

The area was once dominated by Nineteen Mile Bay Lodges, a summer cabin renter, which has since become a private property.

It is known for its knotty pine cabins, built in the 1950s by Leon Proverb, using mostly materials from Charlestown Navy Yard in Massachusetts.