Gutters, roofing, siding and windows in ZIP code 55921, Caledonia, MN

• Gutters in ZIP code 55921

  Houston County averages 40.4 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 55921

  None of the 4 hail events on record within 10 miles of the center of ZIP code 55921 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 55921

  The strongest thunderstorm wind on record within 10 miles of the center of ZIP code 55921 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 55921

  65% of homes in ZIP code 55921 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 55921 is filed here under Caledonia, in Houston County, Minnesota; its center is about 61 miles southeast of our Rochester office. Our address file holds 2,213 address points in ZIP code 55921. Of the cities and towns on our pages, ZIP code 55921 covers only Caledonia.

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 55921 has 2,278 housing units, and 90% 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 3% of the housing units.

The median home in ZIP code 55921 was built in 1967. 65% of homes in ZIP code 55921 were built before 1980, and 15% were built in 2000 or later. The most common building period is 1939 or earlier, with 711 homes.

79% of occupied homes in ZIP code 55921 are owner-occupied. The median owner-occupied home in ZIP code 55921 is valued at $189,600. Among occupied homes in ZIP code 55921, 56% heat with utility gas, 7% with electricity, 22% with bottled or tank gas, 4% with fuel oil and 6% with wood.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040), for ZIP Code Tabulation Area 55921.

The nearest other ZIP codes we serve, measured center to center, are 55919 in Brownsville (8.5 miles east), 55941 in Hokah (9 miles northeast), 55974 in Spring Grove (9.5 miles west), 55943 in Houston (13 miles northwest), 55947 in La Crescent (15 miles north) and 55954 in Mabel (17 miles west). The table sets ZIP code 55921 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 4 hail events, 9 thunderstorm-wind events and 2 tornadoes within 10 miles of the center of ZIP code 55921 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 inch on March 28, 2025, near Spring Grove.

The closest event to the center of ZIP code 55921 was 46 mph wind on June 15, 2022, 1.9 miles away near Caledonia. The most recent hail event within 10 miles of the center of ZIP code 55921 was on March 28, 2025: 1 in hail near Spring Grove. The most recent thunderstorm-wind event within 10 miles of the center of ZIP code 55921 was on July 28, 2025, near Houston. The strongest thunderstorm wind recorded within 10 miles of the center of ZIP code 55921 in that period was 75 mph. The busiest year was 2025, with 4 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 Caledonia, which is in Houston County; the ratings below are that county's. Houston County scores 66.5 of 100 for hail in FEMA's National Risk Index, which ranks 49th of 87 Minnesota counties. Houston County scores 18.1 of 100 for strong wind in FEMA's National Risk Index, which ranks 79th of 87 Minnesota counties. Houston County scores 29 of 100 for winter weather in FEMA's National Risk Index, which ranks 80th of 87 Minnesota counties. Of the perils listed here, the highest score in Houston County is for tornado, at 79.2 of 100.

Houston County averages 40.4 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Houston County is 45.9°F.

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

Our Rochester office is at 3470 55th St NW, Rochester, MN 55901, about 61 miles from the center of ZIP code 55921. 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