Walnut Hill, Tennessee

No ZIP code carries the name of Walnut Hill, Tennessee, in Sullivan County; the nearest ZIP code is 37617, in area code 423, with 729 as an overlay.

Nearest ZIP: 37617
Area codes: 423, 729
County: Sullivan County
State: Tennessee
Coordinates: 36.5679, -82.2657

Nearest ZIP codes to Walnut Hill

This is the ZIP code nearest to Walnut Hill, each listed with the post office it is named after.

ZIP code	Post office	County	Area codes
37617	Blountville	Sullivan County	423, 729

Area codes for Walnut Hill

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.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Towns near Walnut Hill

Bristol5 km (3.1 mi)
Blountville9.6 km (6.0 mi)
Bluff City10.4 km (6.5 mi)
Bluff12.1 km (7.5 mi)
Piney Flats15.8 km (9.8 mi)
Orebank17.8 km (11 mi)
Hunter21.1 km (13 mi)
Bloomingdale21.6 km (13 mi)

Local numbers in area code 423

Looking for a phone number with a Walnut Hill area code? These 423 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.

We may earn a commission when you buy through our links. Numbers are sold and delivered by Exclusive Digits.

More area code 423 numbers on Exclusive Digits