Gutters, roofing, siding and windows in ZIP code 55990, Wykoff, MN

• Gutters in ZIP code 55990

  Fillmore County averages 39 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 55990

  5 of the 27 hail events on record within 10 miles of the center of ZIP code 55990 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 55990

  The strongest thunderstorm wind on record within 10 miles of the center of ZIP code 55990 from 2016 through September 22, 2025 was 75 mph. The National Weather Service counts a thunderstorm wind of 58 mph or more as severe.

• Windows in ZIP code 55990

  69% of homes in ZIP code 55990 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 55990 is filed here under Wykoff, in Fillmore County, Minnesota; its center is about 27 miles southeast of our Rochester office. Our address file holds 521 address points in ZIP code 55990. Of the cities and towns on our pages, ZIP code 55990 covers only Wykoff.

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 55990 has 415 housing units, and 88% 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 6% of the housing units.

The median home in ZIP code 55990 was built in 1951. 69% of homes in ZIP code 55990 were built before 1980, and 14% were built in 2000 or later. The most common building period is 1939 or earlier, with 195 homes.

80% of occupied homes in ZIP code 55990 are owner-occupied. The median owner-occupied home in ZIP code 55990 is valued at $214,800. Among occupied homes in ZIP code 55990, 29% heat with utility gas, 9% with electricity, 51% with bottled or tank gas, 1% with fuel oil and 10% with wood.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040), for ZIP Code Tabulation Area 55990.

The nearest other ZIP codes we serve, measured center to center, are 55935 in Fountain (6.7 miles east), 55975 in Spring Valley (6.8 miles southwest), 55923 in Chatfield (9.2 miles northeast), 55965 in Preston (9.3 miles southeast), 55967 in Racine (14 miles west) and 55976 in Stewartville (15 miles northwest). The table sets ZIP code 55990 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 27 hail events, 32 thunderstorm-wind events and 7 tornadoes within 10 miles of the center of ZIP code 55990 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 1.75 inches on June 16, 2017, near Stewartville. 5 of those hail events had hail 1.5 inches or larger.

The closest event to the center of ZIP code 55990 was 64 mph wind on June 4, 2024, less than 1 mile away near Wykoff. The most recent hail event within 10 miles of the center of ZIP code 55990 was on August 27, 2025: 1 in hail near Chatfield. The most recent thunderstorm-wind event within 10 miles of the center of ZIP code 55990 was on July 28, 2025, near Preston. The strongest thunderstorm wind recorded within 10 miles of the center of ZIP code 55990 in that period was 75 mph. The busiest year was 2017, with 10 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 Wykoff, which is in Fillmore County; the ratings below are that county's. Fillmore County scores 58.7 of 100 for hail in FEMA's National Risk Index, which ranks 59th of 87 Minnesota counties. Fillmore County scores 27.7 of 100 for strong wind in FEMA's National Risk Index, which ranks 71st of 87 Minnesota counties. Fillmore County scores 42.3 of 100 for winter weather in FEMA's National Risk Index, which ranks 73rd of 87 Minnesota counties. Of the perils listed here, the highest score in Fillmore County is for tornado, at 86.8 of 100.

Fillmore County averages 39 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Fillmore County is 44.7°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 27 miles from the center of ZIP code 55990. 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