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Where Is 513 Area Code?

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Database Updated: July 11, 2025
Ohio Phone Number Lookups
Where Is 513 Area Code?

Where Is Area Code 513?

Area code 513 primarily covers the southwestern region of Ohio, encompassing major urban centers and nearby counties. It is best known for including the City of Cincinnati, a significant cultural and economic hub in the state. Area code 513 also extends into several neighboring localities, allowing residents, visitors, and businesses to connect efficiently within these metropolitan and suburban areas. Prominent regions under this area code include:

  • Cincinnati
  • Hamilton
  • Fairfield
  • Middletown
  • Parts of Butler County
  • Parts of Warren County

Community infrastructure and services in this region are overseen by several governmental bodies, including the Public Utilities Commission of Ohio (PUCO). The PUCO, located at 180 E Broad St, Columbus, OH 43215, works closely with the Federal Communications Commission (FCC)—headquartered at 45 L Street NE, Washington, DC 20554—to regulate telephone services and ensure that area code assignments meet federal and state guidelines.

For more information on regulatory measures, consult PUCO official guidelines. Additionally, the Federal Communications Commission provides detailed oversight and administration guidelines at FCC area code regulations.

What Time Zone Is 513 Area Code in the USA?

All geographic locations covered by the 513 area code observe the Eastern Time Zone, commonly abbreviated as ET. This region adheres to daylight saving time rules implemented each year, generally beginning in March and ending in November. During daylight saving time, clocks shift forward by one hour to make better use of evening daylight, and they revert to standard time in the fall. Area residents, businesses, and government offices conduct operations based on the same official time regulations found throughout Ohio.

Key points regarding the time zone include:

  • Official time zone: Eastern Standard Time (EST) in non-daylight-saving months
  • Observance of Daylight Saving Time, shifting to Eastern Daylight Time (EDT) in spring and summer
  • Coordination with local and federal agencies to standardize official time protocols

History of the 513 Area Code

The 513 area code is one of Ohio’s oldest and most historically significant numbering assignments. Established in 1947 as part of the original North American Numbering Plan (NANP), it served a wide region, covering much of southwestern Ohio. Over the decades, population growth and increasing demand for telephone services required changes to ensure adequate supply of numbers.

Some notable milestones in the history of area code 513 include:

  • 1947: Inception of area code 513 under the original NANP structure.
  • 1996: Split of the 513 territory, leading to the creation of area code 937. This change addressed the rapid increase in telephone usage and introduced a new code to serve northern portions of southwestern Ohio.
  • 1990s–2000s: Technological advances, such as mobile phones and internet-based communications, prompted continuous monitoring and reassessment of number allocation.
  • Early 2020s: Implementation of number conservation measures, including potential overlays, designed to extend the life of existing area codes without further geographic splits.

These adjustments reflect a broader approach taken by both state and federal authorities to manage numbering resources efficiently. Additional details about the formation and administration of area codes can be found at the NANPA official resource.

How Many People Use the 513 Area Code?

As the backbone of telecommunications within the Cincinnati region and significant parts of neighboring counties, the 513 area code services a substantial population base. According to regional estimates, the broader metropolitan area that relies on 513 for landlines, wireless devices, and enterprise connections accounts for approximately two million residents.

When examining the telecommunication infrastructure within this area code, the following points are relevant:

  • High demand for commercial and residential lines exists in Cincinnati and nearby urban centers.
  • Continuous population growth in the suburbs necessitates ongoing number allocation reviews.
  • The area code supports a diverse range of telecommunication services, including traditional phone lines, VoIP systems, and cellular networks.

The federal-level regulatory framework, facilitated by the FCC at 45 L Street NE, Washington, DC 20554, ensures availability of unique numbers and prevents exhaustion through planning mandates. Specific demographic data and updates on numbering assignments can also be accessed via state agencies such as the PUCO at 180 E Broad St, Columbus, OH 43215.

Is the 513 Area Code Toll-Free?

The 513 area code is not classified as toll-free. It is a geographically specific code tied to the southwestern region of Ohio, distinguishing it from toll-free codes beginning with prefixes such as 800, 888, 877, 866, 855, 844, or 833. Individuals making calls within the 513 zone may still face local or long-distance charges based on their service providers' policies. Key considerations include:

  • 513 is a traditional geographic code assigned to serve southwestern Ohio.
  • Toll charges for calls may apply depending on a caller’s carrier plan and location.
  • Regulatory measures often require ten-digit dialing for in-state long-distance calls.

For more detailed information, consult resources regarding Ohio telecommunications policy. The Federal Communications Commission provides further guidance on general numbering and billing practices at FCC consumer information.

Cities in 513 Area Code
  • Cincinnati
  • Hamilton
  • Middletown
  • Fairfield
  • Mason
  • Oxford
  • Lebanon
  • Norwood
  • White Oak
  • Forest Park
  • Bridgetown
  • Sharonville
  • Finneytown
  • Monroe
  • Blue Ash
  • Loveland
  • Monfort Heights
  • Trenton
  • Mack
  • Springdale
  • Northbrook
  • Forestville
  • Dent
  • Reading
  • Montgomery
  • Harrison
  • North College Hill
  • Beckett Ridge
  • Madeira
  • Wyoming
  • Cheviot
  • Northgate
  • Dry Run
  • Withamsville
  • Kenwood
  • Groesbeck
  • Landen
  • Milford
  • Covedale
  • Mount Healthy
  • The Village of Indian Hill
  • Deer Park
  • Delhi Hills
  • Turpin Hills
  • Summerside
  • New Burlington
  • Pleasant Run
  • Amelia
  • Silverton
  • Mount Carmel
Counties in 513 Area Code
  • Hamilton
  • Butler
  • Clermont
  • Warren
  • Brown
  • Preble
Prefix Codes for Area Code 513
  • (513) 200
  • (513) 201
  • (513) 202
  • (513) 203
  • (513) 204
  • (513) 205
  • (513) 206
  • (513) 207
  • (513) 208
  • (513) 209
  • (513) 210
  • (513) 212
  • (513) 213
  • (513) 214
  • (513) 215
  • (513) 217
  • (513) 218
  • (513) 219
  • (513) 221
  • (513) 222
  • (513) 223
  • (513) 224
  • (513) 225
  • (513) 226
  • (513) 227
  • (513) 228
  • (513) 229
  • (513) 230
  • (513) 231
  • (513) 232
  • (513) 233
  • (513) 234
  • (513) 235
  • (513) 236
  • (513) 237
  • (513) 238
  • (513) 239
  • (513) 240
  • (513) 241
  • (513) 242
Ohio Area Codes
  • 216
  • 220
  • 234
  • 283
  • 326
  • 330
  • 380
  • 419
  • 436
  • 440
  • 513
  • 567
  • 614
  • 740
  • 937
Ohio Phone Numbers
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