Where is Area Code 423?

The most populous cities in area code 423 are: Chattanooga, Johnson City, Kingsport, Cleveland, and Morristown.

Other cities in the 423 area code include: Bristol, Athens, Greeneville, La Follette, Newport, Blountville, Elizabethton, Rogersville, Sweetwater, Madisonville, Bulls Gap, Dayton, Benton, Erwin, Fall Branch, Oneida, Pikeville, Cumberland Gap, Mountain City, South Pittsburg, Limestone, Sneedville, Charleston, Butler, Copperhill, Vonore, New Tazewell, Soddy Daisy, Surgoinsville, Etowah, Tellico Plains, Jellico, Church Hill, Hixson, Jonesborough, Spring City, Bluff City, Jasper, Hampton, Huntsville, Mosheim, Englewood, Ooltewah, Decatur, Apison, Whitwell, Roan Mountain, Georgetown, Riceville, Wartburg, Robbins, Mount Carmel, Dunlap, Niota, Sunbright, Oakdale, Deer Lodge, Farner, Hartford, Oliver Springs, and Shady Valley.

Chattanooga is a city in the U.S. state of Tennessee, with a population of 176,588 in 2015. The fourth-largest Tennessee city, it is the seat of Hamilton County. Located in southeastern Tennessee in East Tennessee, on the Tennessee River, served by multiple railroads and Interstate highways, Chattanooga is a transit hub. Chattanooga lies 120 miles (190 km) northwest of Atlanta, Georgia, 120 miles (190 km) southwest of Knoxville, Tennessee, 135 miles (217 km) southeast of Nashville, Tennessee, 120 miles (190 km) northeast of Huntsville, Alabama, and 148 miles (238 km) northeast of Birmingham, Alabama.The city, with downtown elevation of approximately 680 feet (210 m), lies at the transition between the ridge-and-valley portion of the Appalachian Mountains and the Cumberland Plateau. Surrounded by mountains and ridges, the official nickname for Chattanooga is the Scenic City, reinforced by the city's reputation for outdoor activities. Unofficial nicknames include River City, Chatt, Nooga, Chattown, and Gig City, referencing Chattanooga's claims that it has the fastest internet service in the Western Hemisphere. Chattanooga is internationally known for the 1941 song " Chattanooga Choo Choo " by Glenn Miller and his orchestra.Chattanooga is home to the University of Tennessee at Chattanooga (UTC) and Chattanooga State Community College.The city has its own typeface, Chatype, which was launched in August 2012. According to the Nooga.com website, this marks the first time that an American city has its own custom-made typeface and also the first time a crowd-funded custom-made typeface has been used for any municipality in the world.

Johnson City is a city in Washington, Carter, and Sullivan counties in the U.S. state of Tennessee, with most of the city being in Washington County. As of the 2010 census, the population of Johnson City was 63,152, and by 2015 the estimated population was 66,027, making it the ninth-largest city in the state. Johnson City is ranked the #14 "Best Small Place for Business and Careers" in the USA by Forbes, and #5 in Kiplinger' s list of "The 10 Least-Expensive Cities For Living in the U.S.A." stating the low cost of living is attributed to affordable homes and below-average utility, transportation and health-care costs. Johnson City is the principal city of the Johnson City Metropolitan Statistical Area, which covers Carter, Unicoi, and Washington counties and had a combined population of 200,966 as of 2013. The MSA is also a component of the Johnson City– Kingsport – Bristol, TN- VA Combined Statistical Area – commonly known as the " Tri-Cities " region. This CSA is the fifth largest in Tennessee with an estimated 500,538 people in residence.

Kingsport is a city in Sullivan and Hawkins counties in the U.S. state of Tennessee ; most of the city is in Sullivan County. The population according to the 2010 census is 48,205. Kingsport is the largest city in the Kingsport– Bristol – Bristol, TN-VA Metropolitan Statistical Area (MSA), which had a population of 309,544 as of 2010. The Metropolitan Statistical Area is a component of the Johnson City –Kingsport–Bristol, TN- VA Combined Statistical Area – commonly known as the " Tri-Cities " region. Census data from 2006–2008 for the Tri-Cities Combined Statistical Area estimates a population of 496,454.Kingsport is commonly included in what is known as the Mountain Empire, which spans a portion of Southwest Virginia and the mountainous counties in eastern Tennessee. The name "Kingsport" is a simplification of "King's Port", originally referring to the area on the Holston River known as King's Boat Yard, the head of navigation for the Tennessee Valley.

The 423 area code lies within the Eastern Daylight Time Zone (or EDT). The current time in Eastern Daylight Time is 5:01 AM on Dec 20, 2022.