Area code 423

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General Info

Area code 423 is in Tennessee (TN). Popular cities using area code 423 are Chattanooga, Johnson City, Kingsport, see full list here

The timezone within area code 423 is (America/New_York). The current time is 19:35:45

Popular zip codes include 37421(Chattanooga), 37343(Hixson), 37660(Kingsport), see full list here

Area code 423 Map

Here is the full area code map for state Tennessee


Popular Cities

City Name State Population Percent of area code in city Percent of city in area code
Chattanooga Tennessee 167674 1 100
Johnson City Tennessee 63152 0 100
Kingsport Tennessee 48205 1 100
Cleveland Tennessee 41285 0 100
Morristown Tennessee 29137 0 99
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Popular Zip Codes

Zip Code Primary City County State Timezone Population Housing Count
37421 Chattanooga Hamilton County Tennessee America/New_York 46228 20747
37343 Hixson Hamilton County Tennessee America/New_York 40042 17235
37660 Kingsport Sullivan County Tennessee America/New_York 40038 19753
37620 Bristol Sullivan County Tennessee America/New_York 39102 18469
37601 Johnson City Washington County Tennessee America/New_York 36182 17829
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