City

Zone

Abilene, TX

4

Akron, OH

M

Albany, NY

E

Albuquerque, NM

4

Allentown, PA

E

Amarillo, TX

4

Atlanta, GA

E

Augusta, GA

4

Augusta, ME

E

Austin, TX

4

Baltimore, MD

E*

Baton Rouge, LA

E

Bellingham, WA

2

Billing, MT

3

Birmingham, AL

E

Boise, ID

1C

Boston, MA

E*

Bozeman, MT

3

Buffalo, NY

E

Burlington, VT

E

Casper, WY

3

Cedar Rapids, IA

E

Charleston, SC

E

Charleston, WV

E

Charlotte, NC

E

Chattanooga, TN

E

Chicago, IL

M

Chico, CA

1D

Cincinnati, OH

M

Cleveland, OH

M

College Station, TX

4

Colorado Spring, CO

3

Columbia, SC

E

Columbus, OH

M

Corpus Christi, TX

4

Dallas, TX

4

Dayton, OH

M

Daytona Beach, FL

E

Denver, CO

3

Des Moines, IA

M

Detroit, MI

M

El Paso, TX

4

Elmira, NY

E

Eugene, WA

1C

Eureka, CA

1D

Evansville, IN

M

Fargo, ND

M

Fayetteville, AR

E

Fayetteville, NC

E

Fort Lauderdale, FL

E

Fort Myers, FL

E

Fort Wayne, IN

M

Fresno, CA

1A

Grand Rapids, MI

M

Great Falls, MT

3

Green Bay, WI

M

Greensboro, NC

E

Greenville, SC

E

Harrisburg, PA

E

Hartford, CT

E

Houston, TX

4

Huntsville, AL

E

Indianapolis, IN

M

Ithaca, NY

E

Jackson, MS

4

Jacksonville, FL

E

Kansas, MO

E

Key West, FL

E

Knoxville, TN

4

Lafayette, LA

M

Lancaster, PA

E

Lansing, MI

M

Laredo, TX

4

Las Vegas, NV

1B

Lexington, KY

M

Lincoln, NB

M

Little Rock, AR

4

Los Angeles, CA (Gateway)

G

Louisville, KY

M

Lubbock, TX

4

Madison, WI

M

Manchester, NH

E

McAllen, TX

4

Medford, OR

1C

Melbourne, FL

E

Memphis, TN

M

Miami, FL

E

Middletown, PA

E

Midland, TX

4

Milwaukee, WI

M

Minneapolis, MN

M

Missoula, MT

M

Mobile, AL

4

Moline, IL

M

Monroe, LA

4

Monterey, CA

1A

Montgomery, AL

E

Myrtle Beach, SC

E

Naples, FL

E

Nashville, TN

E

New Orleans, LA

4

New York, NY (Gateway)

G

Norfolk, VA

E

Oklahoma City, OK

4

Omaha, NB

M

Orlando, FL

E

Palm Springs, CA

2

Panama City, FL

E

Pasco, WA

2

Pensacola, FL

E

Philadelphia, PA

E

Phoenix, AZ

1A

Pittsburgh, PA

E

Portland, ME

E

Portland, OR

1C

Providence, RI

E

Raleigh Durham, NC

E

Redding, CA

1D

Redmond, OR

1C

Reno, NV

1A

Richmond, VA

E

Roanoke, VA

E

Rochester, NY

E

Sacramento, CA

1A

Salt Lake City, UT

3

San Antonio, TX

4

San Diego, CA

1B

San Francisco, CA ( Gateway)

G

Santa Barbara, CA

1B

Sarasota, FL

E

Savannah, GA

4

Seattle, WA

1C

Shreveport, LA

4

Sioux Falls, SD

E

Spokane, WA

1C

St Louis, MO

M

Stockton, CA

2

Syracuse, NY

E

Tallahassee, FL

E

Tampa, FL

E

Toledo, OH

M

Tri Cities, TN

E

Tucson, AZ

2

Tulsa, OK

4

Washington DC

E*

West Palm Beach, FL

E

Wichita, KS

M

Winston Salem, NC

E

Yakima, WA

2