Home age in ZIP 55901, Rochester, MN: median built 1989

Home age is not roof age, and the Census does not record replacements. ZIP 55901 in Rochester, MN: median home built 1989; 68.6% of homes (17,053) are older than 25 years and 10.5% (2,621) were built since 2010, out of 24,852 homes.

U.S. Census Bureau, American Community Survey 2019 to 2023 (5-year estimates), retrieved October 9, 2026. Area = Census ZIP Code Tabulation Area 55901.

Free roof inspection in Rochester

Tell us where the house is. One local roofer calls you, not five.

Add more details (optional)

* Required. We only ask for what a contractor needs to call you back.

Free for homeowners · No spam · One contractor at a time, not a group

Share of homes in ZIP 55901 by decade builtColumns from the pre-1940 decade on the left to 2020 and later on the right. pre-1940 3.3 percent; 1940s 2.6 percent; 1950s 6.7 percent; 1960s 11.5 percent; 1970s 14.3 percent; 1980s 13.6 percent; 1990s 16.7 percent; 2000s 20.8 percent; 2010s 9.2 percent; 2020+ 1.3 percentpre-1940: 810 homes, 3.3%3.3%pre-1940Olmsted County: 8.3%1940s: 644 homes, 2.6%2.6%1940sOlmsted County: 3.3%1950s: 1,667 homes, 6.7%6.7%1950sOlmsted County: 7.9%1960s: 2,863 homes, 11.5%11.5%1960sOlmsted County: 9.6%1970s: 3,544 homes, 14.3%14.3%1970sOlmsted County: 12.9%1980s: 3,377 homes, 13.6%13.6%1980sOlmsted County: 11.7%1990s: 4,148 homes, 16.7%16.7%1990sOlmsted County: 14.0%2000s: 5,178 homes, 20.8%20.8%2000sOlmsted County: 19.0%2010s: 2,290 homes, 9.2%9.2%2010sOlmsted County: 12.2%2020+: 331 homes, 1.3%1.3%2020+Olmsted County: 1.4%Built 1999 or earlier: 68.6% of homes (17,053)ZIP 55901, built before 2000built 2000 or laterOlmsted County

Share of the 24,852 housing units in the ZIP, by decade built. The red marks are Olmsted County. This counts houses, not roofs: a roof is replaced several times in the life of a house, and no federal survey records when.

ZIP 55901 next to Rochester and Olmsted County

IndicatorZIP 55901RochesterOlmsted CountyRank among 1 ZIPs of Rochester on this site
Housing units24,85253,59570,255
Median year built198919871987
Built before 198038.3%42.2%41.9%
Built before 200068.6%no data67.5%
Built since 201010.5%no data13.5%
Owner-occupied homes64.1%65.4%70.7%
Single-family units67.9%68%no data
Median home value$290,000 (+/- $7,535)$287,500$304,500
Median household income$90,430 (+/- $5,866)$87,767no data

City figures are for the Census place, county figures for the county; “no data” means the Census file does not publish that figure. Value and income are survey estimates, the plus-or-minus is the 90% margin of error.

Every decade in ZIP 55901

BuiltShare of Olmsted CountyShare of ZIPHomes in ZIP 55901
2020+1.4%1.3%331
2010s12.2%9.2%2,290
2000s19.0%20.8%5,178
1990s14.0%16.7%4,148
1980s11.7%13.6%3,377
1970s12.9%14.3%3,544
1960s9.6%11.5%2,863
1950s7.9%6.7%1,667
1940s3.3%2.6%644
pre-19408.3%3.3%810

Counts are Census estimates of housing units by year built (table B25034). If a roof had never been replaced, it would be 3 to 6 years old on a house from the 2020s, 17 to 26 on one from the 2000s, 37 to 46 on one from the 1980s and 87 or more on one from before 1940. Most older houses have had at least one replacement, and the Census does not record when.

What the numbers say about ZIP 55901

ZIP 55901 has 24,852 housing units: 17,053 (68.6%) were built before 2000, 2,621 (10.5%) in 2010 or later, and 5,178 (20.8%) in the 2000s, its largest era. The median year built is 1989 (Rochester: 1987), so 2 years newer than the city.

Housing mix and money, from the same survey: 64.1% of occupied homes are owner-occupied; 67.9% of units are single-family houses; the median owner-occupied home is valued at $290,000, give or take $7,535; median household income is $90,430, give or take $5,866; the ZIP holds 46.4% of the housing units the Census counts in Rochester, 24,852 of them. These are survey estimates with margins of error, and for a small ZIP the margin can be wide.

Reading this for roofs, carefully: the Census records when a house was built, never when its roof was last replaced. If every roof were still the one installed with its house, 12,905 units (51.9%, built before 1990) would be past the 30-year top of the usual asphalt-shingle range, 4,148 (16.7%, the 1990s) would mostly sit past it, 5,178 (20.8%, the 2000s) would mostly be inside the 20 to 30 year window and 2,621 (10.5%, 2010 onward) would be younger than it. Most older roofs have been replaced, so treat these as the pool of houses where an old roof is possible, not as a count of old roofs.

Roof age calculator for ZIP 55901

Enter the year your house was built, and the year the roof was last replaced if you know it. It starts at the median year built for this ZIP. The share of neighbours’ homes older than yours comes from this ZIP’s own decade counts.

–years old (roof)
–of homes in ZIP 55901 are older
–vs. the ZIP median year built

Material ranges are general planning figures (the same ones as on our roof-age page), not warranties. Sun, storms, attic ventilation and installation quality move them. The decade shares assume homes were built evenly within each decade. This is not an inspection: a roofer on the roof decides.

Map: ZIP 55901 among Rochester’s ZIP areas

Map of ZIP 55901 and nearby ZIP areas, shaded by the share of homes built before 2000ZIP 55901: 24,852 homes, 68.6% built before 2000, median year 198955901
  • under 20% built before 2000
  • 40 to 60%
  • 80% or more
  • Dot size = housing units. Red ring = ZIP 55901. Click a dot to open that ZIP.

Storm backdrop: Olmsted County

A ZIP is too small for its own hail record, so this is the county. FEMA’s National Risk Index rates Olmsted County Relatively Moderate overall (82.3 of 100), Relatively Moderate for hail (83.4), Relatively Moderate for strong wind (70.1) and Relatively Moderate for tornado (89.3). NOAA logged 109 hail reports in the county, on 21 days with hail of 1 inch or more in the full years 2014 to 2025.

FEMA National Risk Index, December 2025 version, county level. This product uses FEMA’s National Risk Index data but is not endorsed by FEMA.

Where to go from here

Other roofing cities near ZIP 55901: La Crosse, WI (65 miles), Eau Claire, WI (71 miles), Mankato, MN (75 miles).

Questions

How old are the homes in ZIP 55901?

Of the 24,852 housing units, 9,528 (38.3%) were built before 1980, 17,053 (68.6%) before 2000 and 2,621 (10.5%) from 2010 on (Census ACS 2019 to 2023, survey estimate).

Does a house's age tell me how old its roof is in 55901?

No. ACS records the year the structure was built, not the year the roof was last replaced. With 9,528 units built before 1980 in this ZIP, many roofs are replacements rather than originals. Ask the seller for permit records or have a roofer inspect the roof.

Source: U.S. Census Bureau, American Community Survey 5-year estimates 2019 to 2023, tables B25034 (year structure built), B25035, B25003, B25024, B25077 and B19013, ZIP Code Tabulation Areas; ZIP-to-city assignment from the Census 2020 ZCTA-to-place relationship file (a ZIP is assigned to a city when more than half of its land area lies inside it). A ZCTA is not a USPS ZIP code: it approximates one and can differ at the edges. Public domain. The 12 ZIP-specific figures above differ from ZIP to ZIP.

Information only, not a roof inspection. Pickaroofer does not know the condition of any individual roof.