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Where Is 517 Area Code?

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Database Updated: July 9, 2025
Michigan Phone Number Lookups
Where Is 517 Area Code?

Where is Area Code 517?

Area Code 517 serves a significant portion of central and southeastern Michigan. It covers major metropolitan areas, mid-sized cities, and smaller communities. Key regions and localities within this code include:

  • Lansing, the state capital and seat of Ingham County
  • East Lansing, home to Michigan State University
  • Jackson, one of Michigan’s earliest established cities
  • Adrian, located near the southeastern boundary of the region
  • Howell, situated between Lansing and Detroit

Additional counties under the 517 umbrella often include Ingham, Jackson, Eaton, and Lenawee, though some adjacent counties may share boundaries with neighboring area codes. For official details regarding the precise coverage map, please consult the Michigan Public Service Commission official page.

Several local government agencies, town halls, and administrative offices in this region provide public information about phone-related inquiries. One such agency is the Michigan Public Service Commission, 7109 W. Saginaw Hwy, Lansing, MI 48917, which oversees utility and telecommunications regulations statewide.

What time zone is 517 area code in the USA?

The 517 area code resides in the Eastern Time Zone (ET). This zone applies to much of the eastern United States, including Michigan, New York, Florida, and other states along the East Coast. Most communities in Area Code 517 observe Daylight Saving Time (DST), which typically begins in March and concludes in November each year. Official guidance on time zone practices and DST calendars can be found by referencing the National Institute of Standards and Technology time zone resources.

When making or receiving a call within this region, it is advisable to verify any variations in local business hours due to DST changes. Additional information on time-related regulations is available from the Federal Communications Commission, 45 L Street NE, Washington, DC 20554, which provides federal-level communications and timekeeping guidance through the Federal Communications Commission website.

History of the 517 Area Code

The 517 area code was established in 1947 as one of the original telephone numbering plan codes in Michigan. Over the decades, population growth and increased demand for telephone numbers led to significant changes:

  • In the early 1990s, Area Code 517 served a larger portion of Michigan. As the state’s population expanded, a split off occurred in 1993 that introduced Area Code 810 to serve neighboring regions.
  • Later, in 2001, additional demand for phone numbers led to the creation of Area Code 989, which further segmented the older 517 territory.
  • These splits and reassignments were implemented to prevent an exhaustion of available phone numbers. This approach aligns with guidelines found on the Federal Communications Commission website related to area code management.

Despite these historic modifications, Area Code 517 remains an integral part of Michigan’s telecommunications landscape, serving both urban and rural users. Official records outlining the date of creation and subsequent realignments can be found on the Michigan Public Service Commission official page.

How Many People Use the 517 Area Code?

Area Code 517 covers an estimated population of over one million residents when considering the collective reach across multiple counties. To account for the mobile phone market, this area code generates a substantial amount of assigned numbers for:

  • Residential landlines
  • Business telephones
  • Mobile devices (including advanced digital communications)
  • Government agencies

A significant portion of these numbers is dedicated to the Lansing metropolitan area, which includes crucial state government offices and official administrative centers such as the City Hall of Lansing, 124 W Michigan Ave, Lansing, MI 48933. Local authorities occasionally publish updates on new number assignments, and these statistics can be accessed on the Michigan Public Service Commission official page.

Is the 517 Area Code Toll-Free?

The 517 area code is designated as a geographic code rather than a toll-free or special-purpose code. Standard local toll and long-distance charges generally apply, subject to the calling plans of individual service providers. For clarity, please consider the following distinctions:

  • Geographic Area Codes (such as 517, 212, 213, etc.): These require standard billing for voice calls depending on your location and service plan.
  • Toll-Free Area Codes (e.g., 800, 888, 877, 866, 855, 844, and 833): These domestic numbers typically do not incur charges for callers but may be billed differently for the receiving party.
  • Special-Purpose Area Codes (e.g., 900): Often used for premium-rate or information services and are subject to unique billing regulations.

All carriers that offer telephone services within Area Code 517 must adhere to both state and federal regulations, as set forth by entities such as the Michigan Public Service Commission official page and the Federal Communications Commission website. For additional guidance on call charges and billing arrangements, residents and businesses are encouraged to verify details with their specific telecom provider or contact the Michigan Public Service Commission, 7109 W. Saginaw Hwy, Lansing, MI 48917.

Cities in 517 Area Code
  • Lansing
  • East Lansing
  • Jackson
  • Holt
  • Waverly
  • Okemos
  • Adrian
  • Haslett
  • Coldwater
  • Howell
  • Charlotte
  • Albion
  • Tecumseh
  • Hillsdale
  • Mason
  • Grand Ledge
  • Eaton Rapids
  • Vandercook Lake
  • Michigan Center
  • DeWitt
  • Portland
  • Williamston
  • Blissfield
  • Fowlerville
  • Spring Arbor
  • Potterville
  • Edgemont Park
  • Bronson
  • Clinton
  • Hudson
  • Jonesville
  • Morenci
  • Perry
  • Bath
  • Manitou Beach-Devils Lake
  • Leslie
  • Homer
  • Quincy
  • Nashville
  • Union City
  • Wacousta
  • Litchfield
  • Laingsburg
  • Webberville
  • Napoleon
  • Dimondale
  • Stockbridge
  • Brooklyn
  • Grass Lake
  • Reading
Counties in 517 Area Code
  • Ingham
  • Jackson
  • Lenawee
  • Livingston
  • Eaton
  • Calhoun
  • Hillsdale
  • Branch
  • Clinton
  • Shiawassee
  • Ionia
  • Barry
Prefix Codes for Area Code 517
  • (517) 200
  • (517) 202
  • (517) 203
  • (517) 204
  • (517) 205
  • (517) 206
  • (517) 207
  • (517) 208
  • (517) 209
  • (517) 212
  • (517) 213
  • (517) 214
  • (517) 215
  • (517) 217
  • (517) 218
  • (517) 219
  • (517) 222
  • (517) 223
  • (517) 224
  • (517) 226
  • (517) 227
  • (517) 228
  • (517) 229
  • (517) 230
  • (517) 231
  • (517) 232
  • (517) 233
  • (517) 235
  • (517) 238
  • (517) 240
  • (517) 241
  • (517) 242
  • (517) 243
  • (517) 244
  • (517) 250
  • (517) 251
  • (517) 252
  • (517) 253
  • (517) 254
  • (517) 255
Michigan Area Codes
  • 231
  • 248
  • 269
  • 313
  • 517
  • 586
  • 616
  • 734
  • 810
  • 906
  • 947
  • 989
Michigan Phone Numbers
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