Gutters, roofing, siding and windows in ZIP code 55121, Eagan, MN

• Gutters in ZIP code 55121

  Dakota County averages 34.6 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 55121

  29 of the 119 hail events on record within 10 miles of the center of ZIP code 55121 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 55121

  The strongest thunderstorm wind on record within 10 miles of the center of ZIP code 55121 from 2016 through September 22, 2025 was 69 mph. The National Weather Service counts a thunderstorm wind of 58 mph or more as severe.

• Windows in ZIP code 55121

  40% of homes in ZIP code 55121 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 55121 is filed here under Eagan, in Dakota County, Minnesota; its center is about 15 miles north of our Farmington office. Our address file holds 3,249 address points in ZIP code 55121. Of the cities and towns on our pages, ZIP code 55121 covers only Eagan.

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 55121 has 4,296 housing units, and 26% of them are single-family detached homes (American Community Survey 2023, 5-year). Another 16% are attached homes such as townhomes.

The median home in ZIP code 55121 was built in 1987. 40% of homes in ZIP code 55121 were built before 1980, and 21% were built in 2000 or later. The most common building period is 1970–1979, with 1,106 homes.

42% of occupied homes in ZIP code 55121 are owner-occupied. The median owner-occupied home in ZIP code 55121 is valued at $299,500. Among occupied homes in ZIP code 55121, 67% heat with utility gas, 26% with electricity, 3% with bottled or tank gas and 1% with fuel oil.

Source: American Community Survey 2023, 5-year (tables B25024, B25034, B25035, B25003, B25077, B25040), for ZIP Code Tabulation Area 55121.

The nearest other ZIP codes we serve, measured center to center, are 55120 in Mendota Heights (1.9 miles north), 55123 in Eagan (3.1 miles south), 55122 in Eagan (3.5 miles southwest), 55425 in Bloomington (3.8 miles west), 55118 in West St. Paul (4.5 miles northeast) and 55116 in St. Paul (4.5 miles north). The table sets ZIP code 55121 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 119 hail events, 102 thunderstorm-wind events and 7 tornadoes within 10 miles of the center of ZIP code 55121 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 2.5 inches on August 11, 2023, near Minneapolis. 29 of those hail events had hail 1.5 inches or larger.

The closest event to the center of ZIP code 55121 was 64 mph wind on August 27, 2022, less than 1 mile away near Mendota Heights. The most recent hail event within 10 miles of the center of ZIP code 55121 was on September 21, 2025: 1 in hail near South St. Paul. The most recent thunderstorm-wind event within 10 miles of the center of ZIP code 55121 was on July 28, 2025, near Rosemount. The strongest thunderstorm wind recorded within 10 miles of the center of ZIP code 55121 in that period was 69 mph. The busiest year was 2022, with 51 events in all.

Apart from those database entries, NOAA weather radar indicated hail of 1 inch or larger over Eagan on 2 days from January 2025 on, most recently September 22, 2025. A radar indication is an estimate, not a report from the ground, and the counts and tables on this page do not include it.

Source: NOAA Storm Events Database (hail events through March 31, 2026; thunderstorm-wind and tornado events through September 22, 2025); NOAA MRMS radar hail estimates (for the city of Eagan).

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 Eagan, which is in Dakota County; the ratings below are that county's. Dakota County scores 97.5 of 100 for hail in FEMA's National Risk Index, which ranks 3rd of 87 Minnesota counties. Dakota County scores 99.4 of 100 for strong wind in FEMA's National Risk Index, which ranks 1st of 87 Minnesota counties. Dakota County scores 91.9 of 100 for winter weather in FEMA's National Risk Index, which ranks 9th of 87 Minnesota counties. Of the perils listed here, the highest score in Dakota County is for strong wind, at 99.4 of 100.

Dakota County averages 34.6 inches of precipitation a year (NOAA 1991–2020 normals). The average annual temperature in Dakota County is 45.7°F.

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

Our Farmington office is at 821 3rd St, Farmington, MN 55024, about 15 miles from the center of ZIP code 55121. 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