Mountain Time Zone States 2025
State | Mountain Time Zone | Time Zones | |
|---|---|---|---|
 | Alabama | No | Central Time Zone |
 | Alaska | No | Alaska Time Zone, Hawaii-Aleutian Time Zone. Town of Hyder unofficially follows Pacific time. |
 | Arizona | Full | Mountain Time Zone |
 | Arkansas | No | Central Time Zone |
 | California | No | Pacific Time Zone |
 | Colorado | Full | Mountain Time Zone |
 | Connecticut | No | Eastern Time Zone |
 | Delaware | No | Eastern Time Zone |
 | Florida | No | Eastern Time Zone, Central Time Zone |
 | Georgia | No | Eastern Time Zone |
 | Hawaii | No | Hawaii-Aleutian Time Zone |
 | Idaho | Partial | Mountain Time Zone, Pacific Time Zone |
 | Illinois | No | Central Time Zone |
 | Indiana | No | Eastern Time Zone, Central Time Zone |
 | Iowa | No | Central Time Zone |
 | Kansas | Partial | Central Time Zone, Mountain Time Zone |
 | Kentucky | No | Eastern Time Zone, Central Time Zone |
 | Louisiana | No | Central Time Zone |
 | Maine | No | Eastern Time Zone |
 | Maryland | No | Eastern Time Zone |
 | Massachusetts | No | Eastern Time Zone |
 | Michigan | No | Eastern Time Zone, Central Time Zone |
 | Minnesota | No | Central Time Zone |
 | Mississippi | No | Central Time Zone |
 | Missouri | No | Central Time Zone |
 | Montana | Full | Mountain Time Zone |
 | Nebraska | Partial | Central Time Zone, Mountain Time Zone |
 | Nevada | Partial | Pacific Time Zone, Mountain Time Zone |
 | New Hampshire | No | Eastern Time Zone |
 | New Jersey | No | Eastern Time Zone |
 | New Mexico | Full | Mountain Time Zone |
 | New York | No | Eastern Time Zone |
 | North Carolina | No | Eastern Time Zone |
 | North Dakota | Partial | Central Time Zone, Mountain Time Zone |
 | Ohio | No | Eastern Time Zone |
 | Oklahoma | No | Central Time Zone |
 | Oregon | Partial | Pacific Time Zone, Mountain Time Zone |
 | Pennsylvania | No | Eastern Time Zone |
 | Rhode Island | No | Eastern Time Zone |
 | South Carolina | No | Eastern Time Zone |
 | South Dakota | Partial | Central Time Zone, Mountain Time Zone |
 | Tennessee | No | Eastern Time Zone, Central Time Zone |
 | Texas | Partial | Central Time Zone, Mountain Time Zone |
 | Utah | Full | Mountain Time Zone |
 | Vermont | No | Eastern Time Zone |
 | Virginia | No | Eastern Time Zone |
 | Washington | No | Pacific Time Zone |
 | West Virginia | No | Eastern Time Zone |
 | Wisconsin | No | Central Time Zone |
 | Wyoming | Full | Mountain Time Zone |
States Fully in the Mountain Time Zone
There are six states that are fully within the Mountain Time Zone.
Arizona
The state of Arizona is the sixth largest state in the United States. It is also the most populous of the Mountain Time Zone states. An estimated 7,000,000 people live there.
Colorado
Colorado is the 8th largest state by area. It is the 21st most populous state. The largest city is Denver.
Montana
Montana is the fourth largest state in the United States. Montana has approximately 1,085,000 people within its borders. The state capital is Helena.
New Mexico
New Mexico is primarily composed of mountains and deserts. Its capital is Santa Fe, and its largest city is Albuquerque. New Mexico has a southern international border with Mexico.
Utah
Utah is the 45th state in the United States of America. The capital city of Utah is Salt Lake City. The largest city in Utah is also Salt Lake City.
Wyoming
Wyoming is the 10th largest state in the United States, covering an area of 97,914 square miles. Its capital city is Cheyenne. Wyoming was admitted to the Union on July 10, 1890, as the 44th state to join. It has an estimated population of 600,000.
States Partially in the Mountain Time Zone
Eight states have only part of their state within the Mountain Time Zone. Three are split between the Mountain Time Zone and the Pacific Time Zone while the other five, part of the state is also located in the Central Time Zone along with the Mountain Time Zone.
Idaho
1.8 million people live in Idaho. Its capital city is Boise. Idaho has one of the lowest total populations out of all 50 states (43rd). Southern Idaho observes Mountain Time.
Oregon
Oregon is located mostly in the Pacific Time Zone. A small part is in the Mountain Standard Time Zone states. Portland is the largest city in the state. Oregon is located in the Pacific Northwest.
Nevada
Over 3.1 million people live in Nevada, and it is also a popular tourist destination. West Wendover is the only part of the state within the Mountain Time Zone. The rest of the state follows Pacific Time.
Kansas
The state of Kansas is partially in the Central Time Zone and partially in the Mountain Time Zone. Kansas is an agricultural state. The primary agricultural goods produced in Kansas are wheat, sunflowers, and sorghum.
Nebraska
Nebraska is the 37th most populous state in the United States. The largest city is Omaha. Nebraska is an agricultural state known for its wheat and corn production. The western third of the state observes Mountain Time.
North Dakota
North Dakota has a population of about 775,000. It’s known for its agriculture, as it’s a center of corn and wheat production. North Dakota is also known for its oil drilling. Many southwest counties observe Mountain Time and three counties are split between Mountain Time and Central Time.
South Dakota
South Dakota is the 46th most populous state. It has a population of nearly 900,000. It is the 17th most extensive of the 50 states. The capital is Pierre. Sioux Falls is the largest city. The western half of the state is part of the Mountain Time Zone.
Texas
A small part of far western Texas is in the Mountain Time Zone. This area includes Hudspeth and El Paso counties. Texas is the second largest state in the U.S. It covers about 268,820 square miles.
