Gutters, roofing, siding and windows in Olmsted County, MN

In Olmsted County we serve 8 cities and communities: Byron, Dover, Eyota, High Forest, Marion, Oronoco, Rochester and Stewartville.

Olmsted County has 70,255 housing units, and 64% of them are single-family detached homes (American Community Survey 2023, 5-year). Another 8% are attached homes such as townhomes. Mobile homes make up 2% of the housing units.

The median home in Olmsted County was built in 1987. 42% of homes in Olmsted County were built before 1980, and 32% were built in 2000 or later. The most common building period is 2000–2009, with 13,322 homes.

71% of occupied homes in Olmsted County are owner-occupied. The median owner-occupied home in Olmsted County is valued at $304,500. Among occupied homes in Olmsted County, 71% heat with utility gas, 18% with electricity, 8% with bottled or tank gas and 1% with wood.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040).

The NOAA Storm Events Database records 90 hail events, 88 thunderstorm-wind events and 6 tornadoes in Olmsted County from 2016 through March 31, 2026 for hail and through September 22, 2025 for thunderstorm wind and tornadoes. The largest hail on record there in that period was 2 inches on May 29, 2018, near Byron. 14 of those hail events had hail 1.5 inches or larger.

The most recent hail event in Olmsted County was on August 27, 2025: 1 in hail near Stewartville. The most recent thunderstorm-wind event in Olmsted County was on July 28, 2025, near Rochester. The strongest thunderstorm wind recorded in Olmsted County in that period was 81 mph. The busiest year was 2017, with 44 events in all.

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025).

Olmsted County scores 83.4 of 100 for hail in FEMA's National Risk Index, which ranks 17th of 87 Minnesota counties. Olmsted County scores 70.1 of 100 for strong wind in FEMA's National Risk Index, which ranks 38th of 87 Minnesota counties. Olmsted County scores 83.3 of 100 for winter weather in FEMA's National Risk Index, which ranks 17th of 87 Minnesota counties. Of the perils listed here, the highest score in Olmsted County is for cold wave, at 92.8 of 100.

Olmsted County averages 36.7 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Olmsted County is 44.6°F.

Source: FEMA National Risk Index, 2026 release; rank among the state's counties computed from the scores; NOAA 1991–2020 climate normals.

Our Rochester office is at 3470 55th St NW, Rochester, MN 55901, about 8 miles from the center of Olmsted County. Its hours are Monday–Friday 7:00 AM–7:00 PM. You can reach that office at (507) 606-2707.

• Rochester office: address, hours and map