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Area code 641

Area code 641 serves Iowa, including Mason City, New Haven and Marshalltown (Central time). It has been in service since July 9, 2000.

Numbers starting with 641 drew 888 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 231 complaints to the FCC since November 2023. The number on your screen can be faked, so a 641 number proves nothing about where a call came from.

Location
IowaDes Moines-West Des Moines, IA Metropolitan Statistical Area
Time zone
Central
In service since
July 9, 2000Created from 515
Overlay
None: the only code for its area
Local calls
Dial 7 digits
Exchanges in use
584 of 792held by 73 carriers
Projected to run out
4Q 2039NANPA forecast 2026.2

Complaints about 641 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 641. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

888

FCC complaints since November 2023

231

Different 641 numbers reported

1,066

FCC complaints naming a 641 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 20234
December 20239
January 20243
February 20245
March 20242
April 20245
May 20240
June 20242
July 20243
August 20242
September 20248
October 20246
November 20248
December 20243
January 20256
February 20254
March 20256
April 20255
May 20257
June 20257
July 20253
August 202510
September 202514
October 20251
November 20253
December 20254
January 20269
February 20267
March 20267
April 20265
May 20266
June 202613
July 20264
August 202611
September 202616
October 202618

What people said 641 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 691 of 888 reports were robocalls.

Show as a table
SubjectReports
Other382
Reducing your debt (credit cards, mortgage, student loans)263
Medical and prescriptions72
Dropped call or no message71
Calls pretending to be government, businesses, or family and friends42
Warranties and protection plans8

Places served by 641

NANPA lists 223 rate centers for 641. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Mason City20
  • New Haven17
  • Marshalltown16
  • Ottumwa15
  • New Hampton12
  • Oskaloosa12
  • Pella12
  • Charles City11
  • Newton10
  • Fairfield9
  • Grinnell9
  • Iowa Falls8
  • Knoxville8
  • Little Cedar8
  • Osceola7
  • Centerville6
  • Clear Lake6
  • Creston6
  • Chariton5
  • Forest City5
  • Hampton5
  • Lenox5
  • Toledo5
  • Britt4
Show all 223 rate centers

Garner, Greenfield, Manly, Mount Ayr, Northwood, Osage, Sigourney, Ackley, Albia, Bloomfield, Buffalo Center, Corning, Corydon, Eldora, Fontanelle, Guthrie Center, Joice, Klemme, Lake Mills, Latimer, Melbourne, Nashua, Saint Ansgar, Thompson, Adair, Afton, Agency, Alexander, Alta Vista, Amund, Attica, Bagley, Bailey, Baxter, Belmond, Bladensburg, Blakesburg, Bridgewater, Bristow, Bussey, Casey, Chillicothe, Cincinnati, Clearfield, Clemons, Colo, Conrad, Coulter, Davis City, Delta, Diagonal, Douds, Dumont, Eddyville, Eldon, Elma, Farson, Geneva, Gladbrook, Goodell, Green Mountain, Greene, Hedrick, Humeston, Kanawha, Kellerton, Kensett, Keota, Killduff, Lacona, Lamoni, Le Grand, Leighton, Leland, Leon, Liberty Center, Libertyville, Linden, Lineville, Lovilia, Lucas, Lynnville, Macksburg, Malcom, Marble Rock, Martensdale, Martinsburg, Melcher, Melrose, Meservey, Milo, Mingo, Mona, Monroe, Montezuma, Moravia, Mystic, New Sharon, New Virginia, Nora Springs, Ollie, Otley, Panora, Peoria, Plano, Prescott, Reasnor, Rhodes, Rockwell, Rose Hill, Rowan, Russell, Saint Charles, Searsboro, Seymour, Shannon City, Sharpsburg, Sheffield, South Adams, Stacyville, State Center, Steamboat Rock, Sully, Swaledale, Thornton, Tingley, Tracy, Unionville, Ventura, Wellsburg, What Cheer, Yale, Zearing, Albion, Allerton, Aredale, Arispe, Barnes City, Batavia, Benton, Blockton, Brooklyn, Chelsea, Collins, Crystal Lake, Deep River, Derby, Dougherty, Drakesville, Ferguson, Fertile, Floris, Floyd, Fremont, Garden Grove, Garwin, Gilman, Grafton, Grand River, Hanlontown, Harper, Haverhill, Hubbard, Jamaica, Kellogg, Kent, Laurel, Liscomb, Lorimor, Mark, Menlo, Miller, Millerton, Milton, Montour, Moulton, Murray, Nevinville, New Providence, Orient, Peru, Plymouth, Promise City, Pulaski, Rake, Redding, Riceville, Rockford, Rudd, Saint Marys, Scarville, South Emmons, Stevens, Thayer, Truro, Union, Weldon, Williamson, Woden.

Phone companies holding 641 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 72% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 8 of 73 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Windstream Iowa Communications, Inc.60
Cellco Partnership dba Verizon Wireless - IA46
United States Cellular - IA36
Windstream Iowa Communications, Inc. - North32
Qwest Corporation30
New Cingular Wireless PCS, LLC - IL29
Onvoy Spectrum, LLC29
Farmers Tel. CO.28

When today's 641 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
200122
20024
20038
20046
20057
200623
200710
20081
20095
20108
20111
20121
20131
20156
20163
20176
201818
201914
202010
202118
202219
20234
202438
20257
20262

Check a 641 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in Iowa

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show