| City | Population |
| Alliance, OH | 22,322 |
| Austinburg, OH | 516 |
| Austintown, OH | 29,677 |
| Beloit village, OH | 978 |
| Boardman, OH | 35,376 |
| Bolindale, OH | 2,089 |
| Brookfield Center, OH | 1,207 |
| Campbell, OH | 8,235 |
| Canfield, OH | 7,515 |
| Champion Heights, OH | 6,498 |
| Churchill, OH | 2,149 |
| Columbiana, OH | 6,384 |
| Columbiana County rural, OH | 52,436 |
| Cortland, OH | 7,104 |
| Craig Beach village, OH | 1,180 |
| Damascus, OH | 443 |
| East Palestine, OH | 4,721 |
| East Rochester, OH | 231 |
| East Sparta village, OH | 819 |
| Girard, OH | 9,958 |
| Hanoverton village, OH | 408 |
| Hilltop, OH | 532 |
| Homeworth, OH | 481 |
| Howland Center, OH | 6,351 |
| Hubbard, OH | 7,874 |
| Kinsman Center, OH | 616 |
| Lake Mohawk, OH | 1,652 |
| Lake Tomahawk, OH | 485 |
| Leavittsburg, OH | 1,973 |
| Leetonia village, OH | 1,959 |
| Lisbon village, OH | 2,821 |
| Lordstown village, OH | 3,417 |
| Lowellville village, OH | 1,155 |
| Magnolia village, OH | 978 |
| Mahoning County rural, OH | 67,212 |
| Malvern village, OH | 1,189 |
| Maple Ridge, OH | 761 |
| Maplewood Park, OH | 280 |
| Masury, OH | 2,064 |
| McDonald village, OH | 3,263 |
| McKinley Heights, OH | 1,060 |
| Mineral City village, OH | 727 |
| Mineral Ridge, OH | 3,892 |
| Minerva village, OH | 3,720 |
| Morgandale, OH | 1,224 |
| Negley, OH | 281 |
| New Middletown village, OH | 1,621 |
| New Waterford village, OH | 1,238 |
| Newton Falls, OH | 4,795 |
| Niles, OH | 19,266 |
| Orangeville village, OH | 197 |
| Orwell village, OH | 1,660 |
| Poland village, OH | 2,555 |
| Roaming Shores village, OH | 1,508 |
| Rock Creek village, OH | 529 |
| Rogers village, OH | 237 |
| Salem, OH | 12,303 |
| Sandyville, OH | 368 |
| Sebring village, OH | 4,420 |
| South Canal, OH | 1,100 |
| Struthers, OH | 10,713 |
| Summitville village, OH | 135 |
| Trumbull County rural, OH | 78,345 |
| Vienna Center, OH | 650 |
| Warren, OH | 41,557 |
| Washingtonville village, OH | 801 |
| Waynesburg village, OH | 923 |
| West Farmington village, OH | 499 |
| West Hill, OH | 2,273 |
| Yankee Lake village, OH | 79 |
| Youngstown, OH | 66,982 |
| Adamsville, PA | 67 |
| Atlantic, PA | 77 |
| Barkeyville borough, PA | 207 |
| Bessemer borough, PA | 1,111 |
| Chewton, PA | 488 |
| Clark borough, PA | 640 |
| Clintonville borough, PA | 508 |
| Darlington borough, PA | 254 |
| Ellwood City borough, PA | 7,921 |
| Enon Valley borough, PA | 306 |
| Farrell, PA | 5,111 |
| Fredonia borough, PA | 502 |
| Frizzleburg, PA | 602 |
| Geneva, PA | 109 |
| Greenville borough, PA | 5,919 |
| Grove City borough, PA | 8,322 |
| Hannasville, PA | 176 |
| Harrisville borough, PA | 897 |
| Hartstown, PA | 201 |
| Hermitage, PA | 16,220 |
| Jackson Center borough, PA | 224 |
| Jamestown borough, PA | 617 |
| Koppel borough, PA | 762 |
| Lake Arthur Estates, PA | 594 |
| Lake Latonka, PA | 1,012 |
| Lawrence County rural, PA | 43,661 |
| Linesville borough, PA | 1,040 |
| Mercer borough, PA | 2,002 |
| Mercer County rural, PA | 52,020 |
| New Beaver borough, PA | 1,502 |
| New Bedford, PA | 925 |
| New Castle, PA | 23,273 |
| New Castle Northwest, PA | 1,413 |
| New Lebanon borough, PA | 188 |
| New Wilmington borough, PA | 2,466 |
| Oakland, PA | 1,569 |
| Oakwood, PA | 2,270 |
| Polk borough, PA | 816 |
| Portersville borough, PA | 235 |
| Pymatuning Central, PA | 2,269 |
| Pymatuning North, PA | 311 |
| Pymatuning South, PA | 479 |
| Reynolds Heights, PA | 2,061 |
| S.N.P.J. borough, PA | 19 |
| Sandy Lake borough, PA | 659 |
| Sharon, PA | 14,038 |
| Sharpsville borough, PA | 4,415 |
| Sheakleyville borough, PA | 142 |
| Slippery Rock borough, PA | 3,625 |
| Slippery Rock University, PA | 1,898 |
| South New Castle borough, PA | 709 |
| Stoneboro borough, PA | 1,051 |
| Utica borough, PA | 189 |
| Volant borough, PA | 168 |
| Wampum borough, PA | 717 |
| West Liberty borough, PA | 343 |
| West Middlesex borough, PA | 863 |
| West Pittsburg, PA | 808 |
| Wheatland borough, PA | 632 |
| | |
| Total | 792,590 |
