Scam Calls from Area Code 605

Area code 605 covers all of South Dakota, and complaint records show 603 total complaints across 281 distinct numbers since February 2026, with activity still ongoing as of June 2026. Reported locations cluster around Sioux Falls, Mitchell, and Rapid City, though complaints also arrived from California and Florida, indicating these numbers are reaching well beyond state lines.

Debt-reduction solicitations lead the complaint mix with 129 reports, followed closely by 119 dropped-call or silent-call complaints. Impersonation calls pretending to be government agencies, businesses, or personal contacts account for 44 complaints, and medical and prescription solicitations add another 43. Computer and technical support scams trail at 8 complaints but still represent a distinct thread in the data.

The medical and prescription category is notably concentrated among a handful of numbers. Both 605-653-6249 and 605-205-3958 each drew 6 complaints in that category, while 605-277-1043 added another 6 in the same bucket. That three-number cluster accounts for 18 of the 43 medical-category complaints, suggesting coordinated or closely affiliated dialing. The debt-reduction line 605-553-6748 generated 5 complaints on its own, and the dropped-call number 605-231-9730 added 5 more. Three top numbers, 605-291-1907, 605-203-4728, and 605-638-9507, together carry 21 complaints with no assigned category.

At rank 265 out of 358 area codes overall, 605 sits in the lower tier of national complaint volume, but within the geographic block of state-specific codes it ranks 32nd out of 43, placing it in the middle of its peer group. The FCC has one record tied to this code, with prerecorded delivery noted 15 times, consistent with the high dropped-call complaint count and the likelihood of automated dialing campaigns behind the medical and debt clusters.

The pattern that stands out is a tight medical-solicitation cluster running alongside a large silent-call operation, both active from the same South Dakota code and both reaching receivers across multiple states. If the prerecorded delivery method is driving the dropped-call volume as well as the medical pitches, a single automated platform could be responsible for a substantial share of the 603 complaints logged so far, and with activity still ongoing, total volume is likely to climb.