What are the 12 states with only one area code?

The 12 states with only one area code are Alaska, Delaware, Maine, Montana, New Hampshire, North Dakota, Rhode Island, South Dakota, Vermont, West Virginia, and Wyoming.

BlogWhat is the State with the Most Area Codes?

COMMUNICATION TECHNOLOGY

What is the State with the Most Area Codes?

Q: What state has the least area codes?

States with smaller populations and less geographic areas typically have fewer area codes. For example, states like Alaska, Delaware, and Wyoming have only one area code, although changes can occur over time.

Q: What is the hardest area code to get?

Area codes such as 212 (Manhattan, New York), 310 (Los Angeles, California), and 415 (San Francisco, California) have been considered prestigious and difficult to obtain due to their association with densely populated and economically significant areas.

Daniel Andrews

3 Min ReadLast updated: 14 July, 2025

In the United States, every region is uniquely identified by area codes to streamline communication. These codes connect diverse geographical areas, each distinct region represented by a specific area code. However, not all regions share the same number of codes. While there are a few states with only one area code, others boast multiple.

Amidst the twisted network of numerical identifiers in the US, California is the state that has the most area codes in the country. It highlights the state’s expansive communication needs.

What State Has the Most Area Codes in the USA?

How Are Area Codes Assigned?

The North American Numbering Plan Administration (NANPA) follows a systematic and strategic process to assign area codes in the United States. First, NANPA evaluates the need for new codes based on population growth, demand for telecommunications services, and geographic considerations. The objective is to facilitate an efficient, orderly distribution that aligns with the evolving landscape of communication needs.

As regions expand and the requirement for additional phone numbers escalates, NANPA introduces new area codes. This addition maintains the telecommunication network's capacity to serve the growing demands of the new phone numbers in the region.

What State Has the Most Area Codes in the US?

The US contains 335 area codes, with California topping with 38 area codes. This extensive collection serves the state’s diverse locations, including some of the fastest-growing cities. Below is a comprehensive table listing all California area codes with a selection of cities they serve.

Area code	Serving Cities (Example)	Area code	Serving Cities (Example)
209	Stockton, Modesto	213	Los Angeles
310	Beverly Hills, West Hollywood	408	San Jose
415	San Francisco	424	Malibu, Santa Monica
442	Oceanside, Escondido	510	Oakland, Berkeley
530	Redding, Davis	559	Fresno, Visalia
562	Long Beach	323	Los Angeles, Hollywood
619	San Diego	626	Pasadena
628	San Francisco	650	Palo Alto, San Mateo
657	Anaheim, Santa Ana	661	Bakersfield, Lancaster
669	San Jose	707	Santa Rosa, Vallejo

Get a US Virtual Phone Number With Any of 335 Available Area Codes!

Which States Have the Next Highest Number of Area Codes?

After California, Texas and New York have the highest number of area codes in the United States. Texas has 27 area codes, serving major cities like Houston, Dallas, and Austin, while New York follows with 19, covering dense urban centers and major economic regions. Many of these codes are also considered among the most popular area codes in the US due to their strong business, cultural, and regional significance.

📖 You may also read: Most Popular Area Codes in California

Conclusion

In the vast network of US phone numbers - with over 335 area codes, California has the most area codes in the country, encompassing 38 area codes. It reflects the state’s vast population and bustling economy. For business, establishing a business in the state with the most area codes means connecting with diverse communities, which is crucial for economic growth. Calilio offers virtual phone numbers, including California area code numbers. It directly connects you with the expansive population and business landscape of the state.