Area Code 484

Pennsylvania

Area code 484 serves Pennsylvania, primarily Allentown, in the Eastern Time (ET) time zone. It is an overlay area code sharing territory with area code 610.

Overlay Area Code

This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.

This area code shares its geographic region with: area code 835 (Allentown).

In service since: 05-Jun-1999

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 2,939,404
Population Density: 2,438 people/sq mi
above U.S. average (U.S.: 93 people/sq mi)
Median Household Income: $60,698
below U.S. median (U.S.: $75,144)
Poverty Rate: 14.8%
above U.S. average (U.S.: 11.5%)
Unemployment Rate: 6.6%
above U.S. average (U.S.: 3.6%)
Education Attainment: Bachelor's Degree+
40.2%
above U.S. average (U.S.: 33.7%)
High School or Lower
31.3%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the income ranking and density ranking.

Time Zone

Eastern Time (ET)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Eastern Time (ET)

Prefix Utilization

Geographic Coverage

State

Major Cities

Allentown
Reading
Bethlehem
Norristown
Chester
Drexel Hill
Easton
King of Prussia
Pottstown
West Chester
Phoenixville
Fullerton
Ardmore
Coatesville
Yeadon
Emmaus
Wyomissing
Lansdowne
Broomall
Darby
Northampton
Woodlyn
Bala Cynwyd
Middletown

and 249 more cities

Area Code 484 geographic coverage map (light mode)

Demographics

The estimated population served by area code 484 is approximately 2,939,404. The population density is 2,438 people per square mile, which is higher than the national average of 93. The median household income is $60,698, which is lower than the national median of $75,144. Approximately 40.2% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is higher than the national average. The poverty rate stands at 14.8%, which is higher than the national rate of 11.5%.

History

Area code 484 serves as an overlay for the same territory as area code 610. It was introduced in 1999 to provide additional phone number capacity for the region. It shares its territory with area codes area code 610 and area code 835.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 484).

County	Population	Share
Delaware, PA	704,116	20.0%
Chester, PA	624,760	17.8%
Montgomery, PA	570,251	16.2%
Berks, PA	541,658	15.4%
Lehigh, PA	484,196	13.8%
Northampton, PA	365,559	10.4%
Bucks, PA	82,166	2.3%
Lancaster, PA	62,510	1.8%
Carbon, PA	40,938	1.2%
Monroe, PA	33,104	0.9%
Lebanon, PA	4,578	0.1%

Area Code 484 Family Tree

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Total Codes

Splits

Overlays

Max Depth

All Descendants

Code ▲	State	Type	In Service	Parent
835	PA	overlay	02-Sep-2022	484

Area code 484 was originally assigned in 05-Jun-1999 to serve PA. Over the years, it has generated 1 descendant area code through a combination of geographic splits and overlays as demand for telephone numbers grew.