{"id":5046,"date":"2023-07-03T08:24:45","date_gmt":"2023-07-03T08:24:45","guid":{"rendered":"https:\/\/townsvillages.com\/us\/?p=5046"},"modified":"2026-08-22T12:02:11","modified_gmt":"2026-08-22T12:02:11","slug":"olmsted-county","status":"publish","type":"post","link":"https:\/\/townsvillages.com\/us\/olmsted-county\/","title":{"rendered":"Olmsted County, Minnesota"},"content":{"rendered":"

Olmsted County is a county in Minnesota, United States, home to the Mayo Clinic’s founding campus in Rochester. It had a population of 162,847 at the 2020 census and covers 653 square miles (1,693 km2) of land centred near 43\u00b059\u203259\u2033N 92\u00b024\u203237\u2033W.<\/p>\n

Rochester is the county seat, and its postal code is 55901. The county has 8 incorporated cities, 18 civil townships and a handful of small unincorporated communities. It sits in the Central time zone; its FIPS code is 27109.<\/p>\n

Towns & Villages in Olmsted County<\/h2>\n

Olmsted County has 8 incorporated cities, most of them small satellite towns around Rochester, plus a scatter of unincorporated crossroads communities that never grew into their own municipal government. In the table below, “Unincorp.” marks a place with no city government of its own; “CDP” would mark a Census-designated place, though the county currently has none formally tracked by the Census Bureau outside its cities.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Place<\/th>\nType<\/th>\nTownship<\/th>\nPop.<\/th>\nZIP<\/th>\n<\/tr>\n<\/thead>\n
Rochester<\/td>\nCity · seat<\/td>\nRochester<\/td>\n121,395<\/td>\n55901–55906<\/td>\n<\/tr>\n
Stewartville<\/td>\nCity<\/td>\nMarion<\/td>\n6,458<\/td>\n55976<\/td>\n<\/tr>\n
Byron<\/td>\nCity<\/td>\nKalmar<\/td>\n5,646<\/td>\n55920<\/td>\n<\/tr>\n
Eyota<\/td>\nCity<\/td>\nEyota<\/td>\n2,489<\/td>\n55934<\/td>\n<\/tr>\n
Oronoco<\/td>\nCity<\/td>\nOronoco<\/td>\n508<\/td>\n55960<\/td>\n<\/tr>\n
Chatfield<\/td>\nCity (partial)<\/td>\n—<\/td>\n—<\/td>\n55923<\/td>\n<\/tr>\n
Pine Island<\/td>\nCity (partial)<\/td>\n—<\/td>\n—<\/td>\n55963<\/td>\n<\/tr>\n
Dover<\/td>\nCity<\/td>\nDover<\/td>\n721<\/td>\n55929<\/td>\n<\/tr>\n
Chester<\/td>\nUnincorp.<\/td>\nRochester<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Cummingsville<\/td>\nUnincorp.<\/td>\nSalem<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Douglas<\/td>\nUnincorp.<\/td>\nMarion<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Genoa<\/td>\nUnincorp.<\/td>\nFarmington<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
High Forest<\/td>\nUnincorp.<\/td>\nHigh Forest<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Judge<\/td>\nUnincorp.<\/td>\nRock Dell<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Pleasant Grove<\/td>\nUnincorp.<\/td>\nPleasant Grove<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Post Town<\/td>\nUnincorp.<\/td>\nRochester<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Potsdam<\/td>\nUnincorp.<\/td>\nSalem<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Predmore<\/td>\nUnincorp.<\/td>\nCascade<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Ringe<\/td>\nUnincorp.<\/td>\nRochester<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Rock Dell<\/td>\nUnincorp.<\/td>\nRock Dell<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Salem Corners<\/td>\nUnincorp.<\/td>\nSalem<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Shanty Town<\/td>\nUnincorp.<\/td>\nRochester<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Simpson<\/td>\nUnincorp.<\/td>\nMarion<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Viola<\/td>\nUnincorp.<\/td>\nViola<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Chatfield and Pine Island straddle the county line: most of each sits in neighboring Fillmore and Goodhue counties respectively, with only a slice of city limits reaching into Olmsted. High Forest appears once on this list — the county has just one place by that name, in High Forest Township, despite a duplicate entry in older directories.<\/p>\n

Townships<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Township<\/th>\nPop. (2020)<\/th>\nMain settlements<\/th>\n<\/tr>\n<\/thead>\n
Rochester<\/td>\n—<\/td>\nChester, Ringe, Shanty Town, Post Town<\/td>\n<\/tr>\n
Marion<\/td>\n—<\/td>\nStewartville, Douglas, Simpson<\/td>\n<\/tr>\n
Kalmar<\/td>\n—<\/td>\nByron<\/td>\n<\/tr>\n
Eyota<\/td>\n—<\/td>\nEyota<\/td>\n<\/tr>\n
Salem<\/td>\n—<\/td>\nCummingsville, Potsdam, Salem Corners<\/td>\n<\/tr>\n
Oronoco<\/td>\n—<\/td>\nOronoco<\/td>\n<\/tr>\n
Dover<\/td>\n—<\/td>\nDover<\/td>\n<\/tr>\n
Farmington<\/td>\n—<\/td>\nGenoa<\/td>\n<\/tr>\n
Pleasant Grove<\/td>\n—<\/td>\nPleasant Grove<\/td>\n<\/tr>\n
Rock Dell<\/td>\n—<\/td>\nRock Dell, Judge<\/td>\n<\/tr>\n
High Forest<\/td>\n—<\/td>\nHigh Forest<\/td>\n<\/tr>\n
Viola<\/td>\n—<\/td>\nViola<\/td>\n<\/tr>\n
Cascade<\/td>\n—<\/td>\nPredmore<\/td>\n<\/tr>\n
Haverhill<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
New Haven<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Orion<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Quincy<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n
Elmira<\/td>\n—<\/td>\n—<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

ZIP Codes<\/h2>\n