Click here to see all Commercial listings in Fairfield County

Fairfield County is an affluent county in the southwestern corner of Connecticut. As of the 2010 census, the county's population was 916,829, estimated to have increased by 3.6% to 949,921 in 2017. 

Population: 949,921 (2017)

Points of interest: Connecticut's Beardsley Zoo, The Glass House. 

Colleges and Universities: Fairfield University 

Did you know: Fairfield is the highest-income Connecticut location by per capita income 

Click here to see all Commercial listings in Hartford County

Hartford County is a county located in the north central part of the U.S. state of Connecticut. As of the 2010 census, the population was 894,014, making it the second-most populous county in Connecticut.  

Area: 750 sq mi

Population: 895,388 (2017)

Points of interest: Mark Twain House & Museum. 

Colleges and Universities: University of Hartford. 

Did you know: Hartford is the fifth-highest-income Connecticut location by per capita income ($33,151).

Click here to see all Commercial listings in Litchfield County

Litchfield County is located in northwestern Connecticut in the New York metropolitan area. As of the 2010 census, the population was 189,927. The county was named after Litchfield, in England. 

Area: 945 sq mi

Population: 182,177 (2017)

Points of interest: Kent Falls State Park. 

Colleges and Universities: Northwestern Connecticut Community College. 

Did you know: Litchfield is the second-highest-income Connecticut location by per capita income ($45,848). 

Click here to see all Commercial listings in Middlesex County

Middlesex County is a county in the south central part of Connecticut. As of the 2010 census, the population was 165,676. The county was created in May 1785 from portions of Hartford County and New London County.  

Area: 439 sq mi

Population: 163,410 (2017)

Colleges and Universities: Middlesex Community College, Wesleyan University, Holy Apostles College and Seminary

Points of interest: Gillette Castle State Park 

Did you know: Middlesex is the fourth-highest-income Connecticut location by per capita income ($35,848). 

Click here to see all Commercial listings in New Haven County

New Haven County is a county in the south-central part of Connecticut. As of the 2010 census, the population was 862,477 making it the third-most populous county in Connecticut. Two of the state's largest cities, New Haven and Waterbury, are part of New Haven County. 

Area: 862 sq mi

Population: 860,435 (2017)

Colleges and Universities: University of New Haven,  

Points of interest: Hammonasset Beach State Park. 

Did you know: New Haven is the seventh highest income Connecticut location by per capita income ($31,720). 

Click here to see all Commercial listings in New London

New London County is in the southeastern corner of Connecticut and comprises the Norwich-New London, Connecticut Metropolitan Statistical Area, which is also included in the Hartford-West Hartford, Connecticut Combined Statistical Area. 

Area: 772 mi²

Population: 269,033 (2017)

Points of interest: Foxwoods Resort Casino, Mohegan Sun. 

Colleges and Universities: United States Coast Guard Academy. 

Did you know: New London is the sixth-highest-income Connecticut location by per capita income ($32,888). 

Click here to see all Commercial listings in Tolland County

Tolland County is a county located in the northeastern part of the U.S. state of Connecticut. As of the 2010 census, the population was 152,691.  

Population: 151,461 (2017)

Congressional district: 2nd

Points of interest: Bigelow Hollow State Park, Gay City State Park. 

Rivers: Willimantic River, Hockanum River, Natchaug River. 

Did you know: Tolland is the third-highest-income Connecticut location by per capita income ($41,108). 

Click here to see all Commercial listings in Windham County

Windham County is a county located in the northeastern corner of Connecticut. As of the 2010 census, the population was 118,428, making it the least populous county in Connecticut. It forms the core of the region known as the Quiet Corner.

Windham County is included in the Worcester, MA-CT Metropolitan Statistical Area, which is also included in the Boston-Worcester-Providence, MA-RI-NH-CT Combined Statistical Area.

The entire county is within the Quinebaug and Shetucket Rivers Valley National Heritage Corridor, as designated by the National Park Service.