Area Code 423

Where Is Area Code 423?

Updated: June 20th 2021

Area code 423 is the area code for two separate areas of East Tennessee; it is one of the few area codes in the country that is not contiguous. Parts of area code 423 are located in the Eastern Time Zone, while other parts are located in the Central Time Zone. Area code 423 was put into service on September 11, 1995, and was created from a split of area code 615. Area code 423 was split to form area code 865 on October 1, 1999.

Chattanooga is the fourth most populous city in Tennessee and the county seat of Hamilton County. Chattanooga is located in southeastern Tennessee near the border of Georgia on the Tennessee River. Chattanooga is equidistant from Atlanta, Georgia, and Knoxville, Tennessee. Chattanooga is nicknamed “Scenic City” because of the Tennessee River and the surrounding mountains. Chattanooga has a humid subtropical climate, characterized by hot, humid summers and mild winters. Going back in history, the area was originally inhabited by the Native Americans. The Chief of the Cherokee Nation, John Ross, established Ross’s Landing in 1816. The US government forced the Cherokees to relocate to an area designated as Indian Territory in 1838; Ross’s Landing was used as an internment camp. Ross’s Landing was renamed Chattanooga in 1838 and was incorporated as a city the following year. Chattanooga grew quickly and was a boomtown by 1850. The 1867 flood of Chattanooga lasted four days and completely flooded the entire city.

Chattanooga has a population of 167,674 and the racial makeup of the city is 58.0% White, 34.9% African American, 5.5% Hispanic, and 2.0% Asian (2010 Census). Unfortunately Chattanooga’s crime rate is so high that it places among the top ten most dangerous cities in Tennessee.

The economy is centered on manufacturing, service, retail, tourism, and hospitality. Chattanooga has a reputation for outdoor activities such as hunting, fishing, rock climbing, mountain biking, and adventure racing. The biggest annual event in the city is the Riverbend Festival, a nine-day music festival that currently ranks in the top 10% of all American festivals. Points of interest in the city include the Tennessee Aquarium, the Tivoli Theater, the AT&T Field, the Hamilton Place Mall, the Creative Discovery Museum, the Hunter Museum of American Art, and the International Towing & Recovery Hall of Fame and Museum.

Johnson City is the ninth most populous city in Tennessee and is located in Washington County, with smaller parts extending into Carter County and Sullivan County. Johnson City’s landscape consists of steep mountains, rolling hills, and valleys. Johnson City is considered a great city to retire in due to its affordable housing, high quality health care, and climate. Johnson City has a population of 63,152 and the racial makeup of the city is 86.9% White, 6.6% African American, 4.2% Hispanic, and 2.0% Asian (2010 Census). Unfortunately Johnson City is a dangerous city to reside in. The economy is largely centered on East Tennessee State University and health care. Retail also plays a big role in the economy, as Johnson City is home to a large variety of retail business. Points of interest in the city include the Tweetsie Trail, the Winged Deer Park, the Willow Springs Park, the Buffalo Mountain Park, the Freedom Hall Civic Center, and the Hands On! Regional Museum.

Major Cities In Area Code 423


Johnson City




Cleveland is a city in Tennessee and the county seat of Bradley County. Cleveland has a population of 41,285 and the racial makeup of the city is 83.9% White, 7.5% Hispanic, 7.4% African American, and 1.5% Asian (2010 Census). The high crime rate makes Cleveland a dangerous city to reside in. Industry is the largest sector of the economy; industries in Cleveland include furniture, textiles, automotive parts, and industrial cleaning products. Tourism is also a big part of the economy, as there are several attractions in and around Cleveland. The Cherokee National Forest is the main point of interest, attracting thousands of people a year with its abundant wildlife population and diverse recreation opportunities. One of the largest annual events in the city is the MainStreet Cleveland Halloween Block Party, an event that began in 1988 and features live music, food, and a costume contest.

All Tennessee Area Codes By Number