- Wadsworth (Population: 18,437)
- Walbridge (Population: 2,546)
- Walton Hills (Population: 2,400)
- Wapakoneta (Population: 9,474)
- Warren (Population: 46,832)
- Warrensville Heights (Population: 15,109)
- Washington (Population: 13,524)
- Waterville (Population: 4,828)
- Wauseon (Population: 7,091)
- Waverly City (Population: 4,433)
- Waynesburg (Population: 1,003)
- Waynesville (Population: 2,558)
- Wellington (Population: 4,511)
- Wellston (Population: 6,078)
- Wellsville (Population: 4,133)
- West Alexandria (Population: 1,395)
- West Carrollton City (Population: 13,818)
- West Hill (Population: 2,523)
- West Jefferson (Population: 4,331)
- West Lafayette (Population: 2,313)
- West Liberty (Population: 1,813)
- West Milton (Population: 4,645)
- West Portsmouth (Population: 3,458)
- West Salem (Population: 1,501)
- West Union (Population: 2,903)
- West Unity (Population: 1,790)
- Westerville (Population: 35,318)
- Westfield Center (Population: 1,054)
- Westlake (Population: 31,719)
- Weston (Population: 1,659)
- Wetherington (Population: 1,010)
- Wheelersburg (Population: 6,471)
- White Oak East (Population: 3,508)
- White Oak (Population: 13,277)
- White Oak West (Population: 2,932)
- Whitehall (Population: 19,201)
- Whitehouse (Population: 2,733)
- Wickliffe (Population: 13,484)
- Wilberforce (Population: 1,579)
- Willard (Population: 6,806)
- Williamsburg (Population: 2,358)
- Williamsport (Population: 1,002)
- Willoughby Hills (Population: 8,595)
- Willoughby (Population: 22,621)
- Willowick (Population: 14,361)
- Wilmington (Population: 11,921)
- Winchester (Population: 1,025)
- Windham (Population: 2,806)
- Wintersville (Population: 4,067)
- Withamsville (Population: 3,145)
- Woodbourne-Hyde Park (Population: 7,910)
- Woodlawn (Population: 2,816)
- Woodsfield (Population: 2,598)
- Woodville (Population: 1,977)
- Wooster (Population: 24,811)
- Worthington (Population: 14,125)
- Wright-Patterson AFB (Population: 6,656)
- Wyoming (Population: 8,261)
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