Places listings in Pitkin County, Colorado List of places in Colorado List of census-designated places in Colorado List of forts in Colorado List of ghost towns in Colorado List of mountain passes in Colorado List of mountain peaks of Colorado List of municipalities in Colorado List of post offices in Colorado Protected areas of Colorado References External links Redstone Community Association Redstone Historical Society Redstone @ History Colorado Redstone @ WesternMiningHistory.com Redstone @ Colorado.com Redstone @ UncoverColorado.com Redstone Castle Pitkin County website Census-designated places in Pitkin County, Colorado Census-designated places in Colorado Populated places established in 1898