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Phone Directory 605-966 Detail

State Major City Time Zone
South Dakota Sioux Falls Central / Mountain

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Example: (605) 966-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
605-966 Jefferson, SD Jefferson Telephone Co. Union Landline 02/04/1994

Other Series For Prefixes

605-9660###
605-9661###
605-9662###
605-9663###
605-9664###
605-9665###
605-9666###
605-9667###
605-9668###
605-9669###