Where is area code 503 located and what state is area code 503?

Area code 503 is located in Oregon (United States), covering major cities and regions including Portland, Salem, Gresham, Hillsboro, Beaverton, Tigard, Lake Oswego, Keizer, Mcminnville, Woodburn.

How to call area code 503 and do I need to dial area code 503?

To dial a number in area code 503, format your call as +1 (503) XXX-XXXX. Mandatory 10-digit dialing is required in overlay regions.

Is area code 503 a scam, spam, or dangerous call?

Area code 503 is a legitimate geographic area code for Oregon. However, scammers frequently spoof numbers from any area code, so exercise caution with unknown callers.

North American Area CodePacific / Mountain Time Zone

Area Code 503 Location & Details

Q: What timezone is area code 503?

Area code 503 operates on the Pacific / Mountain timezone.

State / Region: Oregon • Country: United States

Major Cities Covered: Portland, Salem, Gresham, Hillsboro, Beaverton, Tigard, Lake Oswego, Keizer, Mcminnville, Woodburn

Standard Dial Format

+1 (503) XXX-XXXX

Country Code: +1 (NANP Format)

What State is Area Code 503?

OregonState Hub →

Country Territory

United States

503 Area Code Time Zone

Pacific / Mountain

503 Overlay Codes

971

Area Code 503 Geographic Map

Interactive location bounds and coverage area for Oregon (Pacific / Mountain Timezone)

Lat: 45.34° • Lng: -122.92°

📍 Geographic Center: OregonMap data © OpenStreetMap contributors

Where is Area Code 503 Located?

Telephone area code 503 is assigned to Oregon in United States. It serves cities and metropolitan communities including Portland, Salem, Gresham, Hillsboro, Beaverton, Tigard, Lake Oswego, Keizer, Mcminnville, Woodburn.

Historical Context & Area Code Overlay Information:503 serves Oregon (United States).

For local and long-distance calls within area code 503, standard 10-digit dialing (503) XXX-XXXX applies.

Who Called Me from Area Code 503?

Received an unknown call, missed call, or text scam from area code 503? Here is how to trace who is calling from 503 area code and verify unknown numbers safely:

Identify Missed Calls & Voicemails:

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

Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 503 prefix to boost pick-up rates.

Reverse Phone Lookup Area Code 503:

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

Learn How Reverse Phone Lookups Work→

How to Call Area Code 503 & Dialing Format

When placing a phone call to a number in area code 503, follow the correct dialing format depending on your calling location:

Calling from inside the US / Canada (+1): Dial 1 + (503) + 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 + 503 + 7-digit number.
Do I need to dial area code 503 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 503

Urban centers, census places, and communities within the +1-503 calling area

50 Major Cities Listed

City Name	County	Population	% of 503 Pop
Portland	Multnomah County	635,109	35.3%
Salem	Polk County	181,779	10.1%
Gresham	Multnomah County	111,513	6.2%
Hillsboro	Washington County	111,126	6.2%
Beaverton	Washington County	97,842	5.4%
Tigard	Washington County	57,929	3.2%
Lake Oswego	Multnomah County	39,722	2.2%
Keizer	Yamhill County	39,140	2.2%
Mcminnville	Yamhill County	34,647	1.9%
Woodburn	Marion County	31,948	1.8%
Happy Valley	Multnomah County	28,916	1.6%
Tualatin	Washington County	28,139	1.6%
Wilsonville	Washington County	27,833	1.5%
Forest Grove	Washington County	27,252	1.5%
Newberg	Washington County	26,896	1.5%
West Linn	Multnomah County	26,567	1.5%
Milwaukie	Multnomah County	22,114	1.2%
Sherwood	Washington County	20,535	1.1%
Canby	Marion County	18,004	1.0%
Dallas	Polk County	17,890	1.0%

Counties Covered by Area Code 503

Geographic county distribution and population coverage across Oregon

County Name	Total Population	% of 503 Area	% of County
Multnomah County	794,472	50.5%	100%
Washington County	608,613	23.6%	70%
Polk County	90,205	12.3%	100%
Marion County	353,218	5.4%	28%
Yamhill County	110,065	4.9%	79%
Columbia County	53,965	1.4%	47%
Clatsop County	41,206	1.3%	56%
Clackamas County	425,245	0.3%	1%
Tillamook County	27,422	0.3%	19%

☎️Area Code 503 Exchange Prefixes & Carriers

Showing 50 of 800 central office 3-digit prefixes and assigned telecom carriers

75% Landline24% Wireless2% VoIP

Prefix	Line Usage	Rate Center	Assigned Carrier	Assign Date
(503) 200-	📱Wireless	PORTLAND	NEW CINGULAR WIRELESS PCS, LLC	10/17/2006
(503) 201-	📱Wireless	PORTLAND	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	N/A
(503) 202-	📞Landline	PORTLAND	SPOK, INC.	N/A
(503) 203-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 204-	📞Landline	PORTLAND	SPOK, INC.	N/A
(503) 205-	📞Landline	PORTLAND	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	N/A
(503) 206-	💻VoIP	PORTLAND	ONVOY, LLC - OR	03/13/2006
(503) 207-	📞Landline	BEAVERTON	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	N/A
(503) 208-	📱Wireless	PORTLAND	NEW CINGULAR WIRELESS PCS, LLC	10/27/2008
(503) 209-	📱Wireless	PORTLAND	T-MOBILE USA, INC.	N/A
(503) 210-	📞Landline	CLACKAMAS	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 211-	📞Landline	XXXXXXXXXX	MULTIPLE OCN LISTING	N/A
(503) 212-	📞Landline	CLACKAMAS	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 213-	📞Landline	BEAVERTON	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 214-	📞Landline	BEAVERTON	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 215-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 216-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 217-	📞Landline	SHERWOOD	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 218-	📞Landline	STFRD-SNDY	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	N/A
(503) 219-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 220-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 221-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 222-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 223-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 224-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 225-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 226-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 227-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 228-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 229-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 230-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 231-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 232-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 233-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 234-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 235-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 236-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 237-	📞Landline	PORTLAND	SPOK, INC.	N/A
(503) 238-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 239-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 240-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 241-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 242-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 243-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 244-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 245-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 246-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 247-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 248-	📞Landline	PORTLAND	QWEST CORPORATION	N/A
(503) 249-	📞Landline	PORTLAND	QWEST CORPORATION	N/A

Frequently Asked Questions about Area Code 503

Where is area code 503 located?

Area code 503 is located in Oregon (United States), serving cities like Portland, Salem, Gresham, Hillsboro, Beaverton, Tigard, Lake Oswego, Keizer, Mcminnville, Woodburn.