The US Census Bureau hosts a free site with a Connecticut Map with counties and facts. Each map is embedded with QuickFacts for incorporated areas with more than 5,000 inhabitants. This includes counties, cities, and towns.
You can either select a county on the map and QuickFacts will pull up information about that county OR you can select one of Connecticut cities or towns listed beneath the Connecticut map and QuickFacts will return information about that city or town.
“QuickFacts tables are summary profiles showing frequently requested data items from various Census Bureau programs.”
Connecticut QuickFacts tables include:
Population facts including race, education, homeownership, and income