List of all settlements:
- Almedia, Columbia
- Aristes, Columbia
- Arlington, Columbia
- Ashland, Columbia
- Benton, Columbia
- Berwick, Columbia
- Bloomsburg, Columbia
- Briar Creek, Columbia
- Buckhorn, Columbia
- Cambria, Columbia
- Catawissa, Columbia
- Chatham, Columbia
- Clatskanie, Columbia
- Claverack-Red Mills, Columbia
- Columbia City, Columbia
- Columbus, Columbia
- Copake Lake, Columbia
- Dayton, Columbia
- Deer Island, Columbia
- Doylestown, Columbia
- Emerson, Columbia
- Espy, Columbia
- Evans, Columbia
- Eyers Grove, Columbia
- Fall River, Columbia
- Fernville, Columbia
- Five Points, Columbia
- Fort White, Columbia
- Foundryville, Columbia
- Friesland, Columbia
- Germantown, Columbia
- Ghent, Columbia
- Grovetown, Columbia
- Harlem, Columbia
- Hudson, Columbia
- Iola, Columbia
- Jamison City, Columbia
- Jerseytown, Columbia
- Kinderhook, Columbia
- Lake City, Columbia
- Lake Wisconsin, Columbia
- Lightstreet, Columbia
- Lime Ridge, Columbia
- Locustdale, Columbia
- Lodi, Columbia
- Lorenz Park, Columbia
- Magnolia, Columbia
- Mainville, Columbia
- Martinez, Columbia
- McNeil, Columbia
- Mifflinville, Columbia
- Millville, Columbia
- Niverville, Columbia
- Numidia, Columbia
- Orangeville, Columbia
- Pardeeville, Columbia
- Philmont, Columbia
- Portage, Columbia
- Poynette, Columbia
- Rainier, Columbia
- Randolph, Columbia
- Rio, Columbia
- Rohrsburg, Columbia
- Rupert, Columbia
- Scappoose, Columbia
- Slabtown, Columbia
- St. Helens, Columbia
- Starbuck, Columbia
- Stillwater, Columbia
- Stottville, Columbia
- Taylor, Columbia
- Valatie, Columbia
- Vernonia, Columbia
- Waldo, Columbia
- Warren, Columbia
- Watertown, Columbia
- Wilburton Number One, Columbia
- Wyocena, Columbia