Gutters, roofing, siding and windows in ZIP code 55018, Dennison, MN

• Gutters in ZIP code 55018

  Goodhue County averages 35.7 inches of precipitation a year (NOAA 1991–2020 normals). One inch of rain on 1,000 square feet of roof is about 623 gallons of water for the gutters to carry.

• Roofing in ZIP code 55018

  16 of the 24 hail events on record within 10 miles of the center of ZIP code 55018 from 2016 through March 31, 2026 had hail 1.5 inches or larger. The National Weather Service counts hail of 1 inch or larger as severe.

• Siding in ZIP code 55018

  The strongest thunderstorm wind on record within 10 miles of the center of ZIP code 55018 from 2016 through September 22, 2025 was 110 mph. The National Weather Service counts a thunderstorm wind of 58 mph or more as severe.

• Windows in ZIP code 55018

  59% of homes in ZIP code 55018 were built before 1980. A home built before 1980 was built before the energy codes in force today were written.

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025); American Community Survey 2023, 5-year; NOAA 1991–2020 climate normals.

ZIP code 55018 is filed here under Dennison, in Goodhue County, Minnesota; its center is about 17 miles southeast of our Farmington office. ZIP code 55018 also extends into Rice County. Of the cities and towns on our pages, ZIP code 55018 covers only Dennison.

Source: Census ZIP Code Tabulation Area, county and place boundaries (a ZIP code can also take in land outside any city or town).

ZIP code 55018 has 418 housing units, and 94% of them are single-family detached homes (American Community Survey 2023, 5-year). Another 1% are attached homes such as townhomes. Mobile homes make up 1% of the housing units.

The median home in ZIP code 55018 was built in 1969. 59% of homes in ZIP code 55018 were built before 1980, and 20% were built in 2000 or later. The most common building period is 1939 or earlier, with 138 homes.

87% of occupied homes in ZIP code 55018 are owner-occupied. The median owner-occupied home in ZIP code 55018 is valued at $316,300. Among occupied homes in ZIP code 55018, 2% heat with utility gas, 5% with electricity, 80% with bottled or tank gas, 2% with fuel oil and 11% with wood.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040), for ZIP Code Tabulation Area 55018.

The nearest other ZIP codes we serve, measured center to center, are 55053 in Nerstrand (6.1 miles southwest), 55009 in Cannon Falls (7.5 miles northeast), 55065 in Randolph (9 miles north), 55946 in Kenyon (11 miles south), 55983 in Wanamingo (12 miles southeast) and 55019 in Dundas (13 miles west). The table sets ZIP code 55018 beside the 8 ZIP codes nearest to it, using the same Census figures for each.

Source: American Community Survey 2023, 5-year, by ZIP Code Tabulation Area; distances are straight lines between ZIP code centers.

The NOAA Storm Events Database records 24 hail events, 30 thunderstorm-wind events and 9 tornadoes within 10 miles of the center of ZIP code 55018 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 3 inches on June 17, 2021, near Randolph. 16 of those hail events had hail 1.5 inches or larger.

The closest event to the center of ZIP code 55018 was 1 in hail on June 17, 2021, 1.6 miles away near Dennison. The most recent hail event within 10 miles of the center of ZIP code 55018 was on September 19, 2024: 1 in hail near Northfield. The most recent thunderstorm-wind event within 10 miles of the center of ZIP code 55018 was on July 28, 2025, near Cannon Falls. The strongest thunderstorm wind recorded within 10 miles of the center of ZIP code 55018 in that period was 110 mph. The busiest year was 2021, with 18 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).

This page is filed under Dennison, which is in Goodhue County; the ratings below are that county's. Goodhue County scores 80.2 of 100 for hail in FEMA's National Risk Index, which ranks 22nd of 87 Minnesota counties. Goodhue County scores 82.7 of 100 for strong wind in FEMA's National Risk Index, which ranks 19th of 87 Minnesota counties. Goodhue County scores 50 of 100 for winter weather in FEMA's National Risk Index, which ranks 65th of 87 Minnesota counties. Of the perils listed here, the highest score in Goodhue County is for tornado, at 88.2 of 100.

Goodhue County averages 35.7 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Goodhue County is 44.9°F.

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

Our Farmington office is at 821 3rd St, Farmington, MN 55024, about 17 miles from the center of ZIP code 55018. Its hours are Monday–Friday 7:00 AM–7:00 PM. You can reach that office at (651) 998-8500.

• Farmington office: address, hours and map