Below is a list of Dunkirk OH zip codes. For your research we have also included Dunkirk Area Code, Time Zone, UTC and the local Hardin County FIPS Code. Each Dunkirk Ohio zip code has a center Longitude / Latitude point (the Dunkirk center is -83.643203735352 / 40.788501739502). For your convenience we have also indicated if that zip code in Dunkirk observes Daylight Savings time.