Learn About The Commemorative Quarter for Ohio

Welcome to Roby Addition ... Roby Addition is located in Fairfield County<1>. Time Zone: Roby Addition lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time Area Codes for Roby Addition: 740 & 220<2> Off-the-Road Links ... Unfortunately, we don't know of a website for Roby Addition. If you can help, please contact us through our Feedback Page. The official website for Fairfield County: www.co.fairfield.oh.us/ The official website for State of Ohio: https://ohio.gov/ Footnotes ... <1> If you're interested in how the shape of Ohio's counties, including Fairfield, have changed over time, we recommend the Atlas of Historical County Boundaries. <2> When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 740 code has been Overlayed with the 220 area code. New phone numbers in the Roby Addition area will be assigned with one of these codes: 740 or 220. As a result, placing a call in the Roby Addition area will require 10-digit dialing (where you enter both the area code and then the phone number).

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This page was last modified/updated: 22 Apr 2025