Reference Data

JEFFERSON, SD Rate Center

JEFFERSON — SD

Data last updated: March 10, 2026

LATA

640

State

SD

Area Codes

1

Exchanges (NXX)

1

Carriers

1

Coordinates

42.60257317882319, -96.56080305229264

Area Codes

605

Top Carriers

Carrier	OCN	NXX Count
JEFFERSON TEL. CO.	1666	1