Search US Area Codes and Time Zones Instantly

A telephone area code is a three-digit number that identifies a specific geographic region within the North American Numbering Plan. It's the first three digits you dial when making a long-distance call within the US, Canada, and participating Caribbean nations.

For example, in the phone number (312) 555-0123, the "312" is the area code for Chicago, Illinois. These codes help route calls efficiently across the telecommunications network and indicate the general location of a phone number.

Simply enter the city name or state in the search box above. Our tool will display live analog clocks showing the current local time for that location, along with the date and time zone abbreviation.

The clocks update in real-time every second, so you always see the accurate current time. This is especially useful when scheduling calls, meetings, or travel across different US time zones.

The United States has six main time zones:

• Eastern Time (ET): New York, Florida, Georgia
• Central Time (CT): Chicago, Texas, Louisiana
• Mountain Time (MT): Denver, Arizona, Utah
• Pacific Time (PT): Los Angeles, Seattle, San Francisco
• Alaska Time (AKT): Alaska
• Hawaii-Aleutian Time (HST): Hawaii

Most states observe Daylight Saving Time, except Arizona (excluding the Navajo Nation) and Hawaii.

Multiple area codes exist in regions where the demand for phone numbers has exceeded the capacity of a single code. Each area code can support approximately 7.9 million phone numbers, and high-population areas quickly exhaust this supply.

For example, Los Angeles has 12 area codes (213, 310, 323, 424, 562, 626, 661, 738, 747, 818, 840, 909) serving different parts of the greater LA region. When capacity is reached, telecommunications authorities implement either geographic splits or overlay codes.

Yes, area codes are tied to geographic regions, which means they can help you determine the time zone. Our tool shows both the area codes and current local time for any city or state you search.

However, some states span multiple time zones. For example, Florida has areas in both Eastern and Central time zones, and Texas has regions in both Central and Mountain time zones. Always check the specific city's time zone when scheduling calls.

The times displayed are highly accurate and update every second. They're based on your device's system time converted to the specific time zone of the city you're viewing.

The analog clocks show hours, minutes, and seconds with precise positioning, and the digital time display shows the exact time in 12-hour format with AM/PM. The date is also displayed in full format (e.g., "Monday, November 17, 2025").

Not reliably. While area codes indicate the region where a number was originally assigned, they don't necessarily reflect where the current user is located. With phone number portability, people can keep their numbers when moving to different states or switching carriers.

Additionally, many businesses use numbers with area codes from different regions for marketing purposes, and mobile phones can be used anywhere regardless of their area code. The code provides a general geographic reference but shouldn't be relied upon for precise location information.

Here are the time differences between major US time zones:

• Eastern to Central: 1 hour behind
• Eastern to Mountain: 2 hours behind
• Eastern to Pacific: 3 hours behind
• Eastern to Alaska: 4 hours behind
• Eastern to Hawaii: 5 hours behind (6 during DST)

For example, when it's 12:00 PM (noon) in New York (Eastern), it's 11:00 AM in Chicago (Central), 10:00 AM in Denver (Mountain), and 9:00 AM in Los Angeles (Pacific).

Technically yes, but they function differently. Toll-free codes like 800, 833, 844, 855, 866, 877, and 888 are part of the numbering system but aren't tied to geographic locations. Instead, they allow callers to reach businesses without incurring long-distance charges.

These numbers are portable and can be routed to any physical location, so they don't indicate a specific time zone. A business with an 800 number could have offices in any time zone.

New codes are introduced as needed, typically every few years in high-growth areas. The rate varies significantly based on population growth, business expansion, and the proliferation of mobile devices and IoT connections.

Recent additions include code 738 in Los Angeles (November 2024), code 235 in Missouri (2024), and code 659 in Alabama (2023). The North American Numbering Plan Administrator continuously monitors number availability and plans for future needs.

It depends on your location. In areas with overlay codes, 10-digit dialing (area code + seven-digit number) is mandatory for all calls, even local ones. This requirement ensures proper call routing when multiple codes serve the same area.

In regions with only one area code and no overlays, you may still be able to dial just seven digits for local calls. However, many areas have transitioned to mandatory 10-digit dialing, especially as the national 988 suicide prevention hotline was implemented in 2022.

Arizona (except the Navajo Nation) chose not to observe Daylight Saving Time due to its hot climate. The state decided that having an extra hour of daylight in the evening during summer would increase energy consumption for air conditioning.

This means that Arizona is on Mountain Standard Time year-round. During summer, when other Mountain Time Zone states switch to MDT, Arizona's time matches Pacific Daylight Time. This can be confusing when calling or scheduling meetings with Arizona.

Our database is sourced from official telecommunications records and IANA time zone data, updated regularly to reflect the latest changes. As of November 2025, we maintain information on all 335 active area codes in the United States, plus codes for US territories.

We monitor announcements from the North American Numbering Plan Administrator and time zone authorities to ensure accuracy. The time zone data uses official IANA identifiers (like "America/New_York") for precise time calculations.