List of all settlements:
- Allison, Butler
- Andover, Butler
- Aplington, Butler
- Augusta, Butler
- Beckett Ridge, Butler
- Bellwood, Butler
- Benton, Butler
- Brainard, Butler
- Bristow, Butler
- Bruin, Butler
- Butler, Butler
- Callery, Butler
- Cassoday, Butler
- Chicora, Butler
- Clarksville, Butler
- College Corner, Butler
- Connoquenessing, Butler
- Darrtown, Butler
- David City, Butler
- Douglass, Butler
- Dumont, Butler
- Dwight, Butler
- East Butler, Butler
- Eau Claire, Butler
- El Dorado, Butler
- Elbing, Butler
- Evans City, Butler
- Fairfield, Butler
- Fairview, Butler
- Fernway, Butler
- Fisk, Butler
- Four Bridges, Butler
- Fox Run, Butler
- Georgiana, Butler
- Greene, Butler
- Greenville, Butler
- Hamilton, Butler
- Harmony, Butler
- Harrisville, Butler
- Harviell, Butler
- Homeacre-Lyndora, Butler
- Karns City, Butler
- Lake Arthur Estates, Butler
- Latham, Butler
- Leon, Butler
- Mars, Butler
- McKenzie, Butler
- Meadowood, Butler
- Meridian, Butler
- Middletown, Butler
- Millville, Butler
- Monroe, Butler
- Morgantown, Butler
- Neelyville, Butler
- New Hartford, Butler
- New Miami, Butler
- Nixon, Butler
- Oak Hills, Butler
- Octavia, Butler
- Olde West Chester, Butler
- Oxford, Butler
- Parkersburg, Butler
- Petrolia, Butler
- Poplar Bluff, Butler
- Portersville, Butler
- Potwin, Butler
- Prospect, Butler
- Qulin, Butler
- Rising City, Butler
- Rochester, Butler
- Rosalia, Butler
- Rose Hill, Butler
- Ross, Butler
- Saxonburg, Butler
- Seven Fields, Butler
- Seven Mile, Butler
- Shanor-Northvue, Butler
- Sharonville, Butler
- Shell Rock, Butler
- Slippery Rock, Butler
- Slippery Rock University, Butler
- Somerville, Butler
- Towanda, Butler
- Trenton, Butler
- Ulysses, Butler
- Unionville, Butler
- Valencia, Butler
- West Liberty, Butler
- West Sunbury, Butler
- Wetherington, Butler
- Whitewater, Butler
- Williamsdale, Butler
- Zelienople, Butler