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Area Code 641 Location & Details

State / Region: Iowa • Country: United States

Major Cities Covered: Marshalltown, Mason City, Ottumwa, Newton, Norwalk, Oskaloosa, Pella, Grinnell, Fairfield, Clear Lake

Standard Dial Format
+1 (641) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 641?
IowaState Hub →
Country Territory
United States
641 Area Code Time Zone
Central
641 Overlay Codes
No Overlays

Area Code 641 Geographic Map

Interactive location bounds and coverage area for Iowa (Central Timezone)

Lat: 41.92° • Lng: -93.20°
📍 Geographic Center: IowaMap data © OpenStreetMap contributors

Where is Area Code 641 Located?

Telephone area code 641 is assigned to Iowa in United States. It serves cities and metropolitan communities including Marshalltown, Mason City, Ottumwa, Newton, Norwalk, Oskaloosa, Pella, Grinnell, Fairfield, Clear Lake.

Historical Context & Area Code Overlay Information:641 serves Iowa (United States).

For local and long-distance calls within area code 641, standard 10-digit dialing (641) XXX-XXXX applies.

Who Called Me from Area Code 641?

Received an unknown call, missed call, or text scam from area code 641? Here is how to trace who is calling from 641 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 641 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 641:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 641 & Dialing Format

When placing a phone call to a number in area code 641, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (641) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 641 + 7-digit number.
  • Do I need to dial area code 641 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 641

Urban centers, census places, and communities within the +1-641 calling area

50 Major Cities Listed
City NameCountyPopulation% of 641 Pop
MarshalltownMarshall County27,53610.0%
Mason CityCerro Gordo County26,8539.8%
OttumwaWapello County25,3199.2%
NewtonJasper County15,7415.7%
NorwalkWarren County15,0045.5%
OskaloosaMahaska County11,4934.2%
PellaMarion County10,9924.0%
GrinnellPoweshiek County9,4303.4%
FairfieldJefferson County9,2203.4%
Clear LakeCerro Gordo County7,6012.8%
KnoxvilleMarion County7,4692.7%
CrestonUnion County7,3352.7%
Charles CityFloyd County7,0132.6%
OsceolaClarke County5,6792.1%
CentervilleAppanoose County5,3271.9%
Iowa FallsHardin County5,0131.8%
CharitonLucas County4,3471.6%
HamptonFranklin County4,2641.6%
Forest CityWinnebago County4,1431.5%
AlbiaMonroe County3,5991.3%

Counties Covered by Area Code 641

Geographic county distribution and population coverage across Iowa

County NameTotal Population% of 641 Area% of County
Cerro Gordo County42,34712.6%81%
Marshall County40,12810.6%72%
Wapello County35,4299.2%71%
Marion County33,9556.7%54%
Jasper County38,1226.5%47%
Warren County56,4965.5%27%
Mahaska County21,9124.6%58%
Poweshiek County18,4234.5%67%
Jefferson County15,4053.4%60%
Hardin County16,4603.3%56%
Floyd County15,0813.0%55%
Union County11,9242.7%62%
Winnebago County10,3512.3%60%
Clarke County9,5912.1%59%
Tama County16,8042.0%32%
Appanoose County12,1021.9%44%
Chickasaw County11,7241.8%42%
Hancock County10,6201.8%47%
Lucas County8,8261.6%49%
Franklin County9,9771.6%43%
Decatur County7,6751.4%50%
Monroe County7,3941.3%49%
Mitchell County10,5911.3%34%
Worth County7,3001.2%45%
Davis County9,1761.0%30%
Polk County513,5111.0%1%
Adams County3,6001.0%80%
Wright County12,8480.9%19%
Adair County7,4650.8%28%
Keokuk County9,8040.7%20%
Wayne County6,6340.6%26%
Ringgold County4,6490.6%35%
Guthrie County10,6870.6%15%

☎️Area Code 641 Exchange Prefixes & Carriers

Showing 50 of 605 central office 3-digit prefixes and assigned telecom carriers

67% Landline24% Wireless9% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(641) 200-💻VoIPCHARLES CYBANDWIDTH.COM CLEC, LLC - IA06/29/2018
(641) 201-📱WirelessMASON CITYMETROPCS, INC.04/09/2001
(641) 202-📱WirelessCRESTONUNITED STATES CELLULAR - IA02/14/2001
(641) 203-📱WirelessCHARITONUNITED STATES CELLULAR - IA02/14/2001
(641) 204-📱WirelessPELLAMETROPCS, INC.08/17/2004
(641) 205-📞LandlineKNOXVILLELOCAL TELEPHONE DATA SERVICES CORP.N/A
(641) 206-📱WirelessOSCEOLANEW CINGULAR WIRELESS PCS, LLC - IL08/17/2017
(641) 207-📞LandlineKEOTALOCAL TELEPHONE DATA SERVICES CORP.01/14/2004
(641) 208-📱WirelessBLOOMFIELDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA03/01/2004
(641) 209-📞LandlineFAIRFIELDLOCAL TELEPHONE DATA SERVICES CORP.N/A
(641) 210-📱WirelessMASON CITYT-MOBILE USA, INC.08/02/2001
(641) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(641) 212-📞LandlineGREENFIELDWINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS06/25/2015
(641) 213-📞LandlineNEW HAVENFARMERS TEL. CO.10/16/2006
(641) 214-📱WirelessDAVIS CITYCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA08/10/2020
(641) 215-📞LandlineOSKALOOSATELNYX LLCN/A
(641) 216-📱WirelessCENTERVLUNITED STATES CELLULAR - IAN/A
(641) 217-📞LandlineCHARITONWINDSTREAM IOWA COMMUNICATIONS, INC.N/A
(641) 218-📱WirelessKNOXVILLEUNITED STATES CELLULAR - IAN/A
(641) 219-📱WirelessCHARITONCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA10/09/2020
(641) 220-📱WirelessCHARLES CYCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IAN/A
(641) 221-📱WirelessGREENFIELDUNITED STATES CELLULAR - IA04/29/2003
(641) 222-📞LandlineBRITTFRACTEL, LLC01/09/2020
(641) 223-📞LandlineOSCEOLAWINDSTREAM IOWA COMMUNICATIONS, INC. - NORTHN/A
(641) 224-📞LandlineSIGOURNEYLOCAL TELEPHONE DATA SERVICES CORP.09/12/2001
(641) 225-📞LandlineEDDYVILLELOCAL TELEPHONE DATA SERVICES CORP.09/12/2001
(641) 226-📱WirelessOTTUMWANEW CINGULAR WIRELESS PCS, LLC - IL07/11/2001
(641) 227-📞LandlineBAXTERPARTNER COMMUNICATIONS COOPERATIVEN/A
(641) 228-📞LandlineCHARLES CYQWEST CORPORATIONN/A
(641) 229-📱WirelessNEWHAMPTONCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA05/06/2004
(641) 230-📱WirelessPELLANEW CINGULAR WIRELESS PCS, LLC - IL06/05/2001
(641) 231-📱WirelessCLEAR LAKECELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA08/09/2001
(641) 232-📱WirelessLEIGHTONNEW CINGULAR WIRELESS PCS, LLC - IL07/11/2001
(641) 233-📱WirelessFAIRFIELDT-MOBILE USA, INC.05/15/2001
(641) 234-📞LandlineMOUNT AYRIOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY09/25/2003
(641) 235-📞LandlineNEW HAVENFARMERS TEL. CO.05/01/2006
(641) 236-📞LandlineGRINNELLWINDSTREAM IOWA COMMUNICATIONS, INC. - NORTHN/A
(641) 237-📞LandlineNEW HAVENFARMERS TEL. CO.10/16/2006
(641) 238-💻VoIPGENEVAONVOY, LLC - IAN/A
(641) 239-📱WirelessAFTONNEW CINGULAR WIRELESS PCS, LLC - IL03/03/2021
(641) 240-📱WirelessUNIONVILLENEW CINGULAR WIRELESS PCS, LLC - IL07/22/2021
(641) 241-📱WirelessFONTANELLENEW CINGULAR WIRELESS PCS, LLC - IL05/25/2021
(641) 242-📞LandlineBLOOMFIELDMCC TELEPHONY OF IOWA, LLC - IA03/08/2010
(641) 243-📞LandlineMASON CITYLEVEL 3 COMMUNICATIONS, LLC - IA10/26/2009
(641) 244-📱WirelessOTTUMWANEW CINGULAR WIRELESS PCS, LLC - IL06/02/2016
(641) 245-📱WirelessPRESCOTTNEW CINGULAR WIRELESS PCS, LLC - IL05/25/2021
(641) 246-📱WirelessNORA SPGNEW CINGULAR WIRELESS PCS, LLC - IL07/19/2021
(641) 247-📱WirelessFONTANELLEUNITED STATES CELLULAR - IA01/13/2009
(641) 248-📱WirelessOLLIENEW CINGULAR WIRELESS PCS, LLC - IL05/25/2021
(641) 249-📱WirelessLINEVILLENEW CINGULAR WIRELESS PCS, LLC - IL07/19/2021

Frequently Asked Questions about Area Code 641

Where is area code 641 located?

Area code 641 is located in Iowa (United States), serving cities like Marshalltown, Mason City, Ottumwa, Newton, Norwalk, Oskaloosa, Pella, Grinnell, Fairfield, Clear Lake.

What timezone is area code 641?

Area code 641 operates in the Central timezone.

What state is area code 641?

Area code 641 is assigned to the state / telecom territory of Iowa.

Is area code 641 a scam or dangerous?

Area code 641 is an official geographic area code for Iowa. However, beware of robocaller spoofing.

Iowa State Area Codes

View complete directory of telephone area codes assigned to Iowa.

Explore Iowa Directory

Get a 641 Business Phone Number

How to acquire a virtual phone number or business line with area code 641 for local customer trust in Iowa.

Get 641 Business Number
🛡️ Scam & Safety Directory

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Overlay & Nearby Area Codes for Iowa

Explore neighboring telecom prefixes sharing geographical boundaries with area code 641.

319
Central
Area Code 319
Cedar Rapids, Iowa City, Waterloo, Marion, Cedar Falls, Coralville, Burlington, North Liberty, Waverly, Fort Madison
515
Central
Area Code 515
Des Moines, Ankeny, West Des Moines, Ames, Urbandale, Waukee, Johnston, Fort Dodge, Altoona, Clive
563
Central
Area Code 563
Davenport, Dubuque, Bettendorf, Clinton, Muscatine, Decorah, Eldridge, Asbury, Maquoketa, Dewitt
712
Central
Area Code 712
Sioux City, Council Bluffs, Storm Lake, Spencer, Le Mars, Carroll, Sioux Center, Denison, Atlantic, Orange City