Johnson County, Tennessee
Johnson County, Tennessee, has 6 towns and 5 ZIP codes, in area code 423, with 729 as an overlay.
Towns in Johnson County, A to Z
| Town | ZIP codes | Area codes |
|---|---|---|
| Butler | 37640 | 423, 729 |
| Laurel Bloomery | 37680 | 423, 729 |
| Mountain | nearest37683 | 423, 729 |
| Mountain City | 37683 | 423, 729 |
| Shady Valley | 37688 | 423, 729 |
| Trade | 37691 | 423, 729 |
ZIP codes in Johnson County
- 37640Butler423, 729
- 37680Laurel Bloomery423, 729
- 37683Mountain City423, 729
- 37688Shady Valley423, 729
- 37691Trade423, 729
Area codes in Johnson County
- Area code 423
In service since September 11, 1995. Shares its area with 729. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 729
In service since September 5, 2025. Shares its area with 423. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Local numbers in area code 423
Looking for a phone number with a Johnson County area code? These 423 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (423) 770-0789Church Hill, TN$59View & buy
- (423) 770-7012Church Hill, TN$59View & buy
- (423) 770-7123Church Hill, TN$59View & buy
- (423) 770-7543Church Hill, TN$59View & buy
- (423) 770-7652Church Hill, TN$59View & buy
- (423) 770-7655Church Hill, TNAlso spells POLL, ROLL$59View & buy
- (423) 770-7656Church Hill, TNAlso spells POLO, SOLO$59View & buy
- (423) 770-7657Church Hill, TN$59View & buy
- (423) 770-7658Church Hill, TNAlso spells ROKU$59View & buy
- (423) 770-7678Church Hill, TNAlso spells PORT, POST, SORT$59View & buy
- (423) 770-7765Church Hill, TN$59View & buy
- (423) 770-7895Church Hill, TN$59View & buy
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