About 4,070 feet above sea level.
bangor
Davis, WV
The town of Amidon has the highest elevation in North Dakota, sitting at approximately 3,077 feet above sea level.
The highest community in Ontario is Foymount, in the Renfrew Highlands.
Probably Jasper or Banff, as they are both located in the Rockies.
The highest "town" is Alma, Colorado at an elevation of 10578 feet (3224 m).(2010 pop. 179)(see below)However, the town of Winter Park (pop. 662) may very well claim to be the highest town in the US. Its town limit includes a ski area at up to 12060 feet in elevation.
Alaska could be the highest state because Mount McKinley is the highest point in the United States. Colorado has the highest mean elevation of any state, which could also be considered a candidate for highest state. So technically they both can be considered correct answers. It just depends if you mean the highest point in a state(Alaska) or the highest mean altitude for a state(Colorado).
North Elba
The highest city or town in British Columbia is likely Lytton, which sits at an elevation of about 260 meters (850 feet) above sea level.
Hannagan Meadow, AZ (9,071 feet) Alpine, AZ (8,050 feet)
Jensen Beach is located along the Atlantic coast of Florida. There really is no high elevation in this coastal town.
Banff is approximately 5,000 ft above sea level, which makes it the highest elevated town in Canada.