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Duplex (2 Units, Any Combination)Residential
Last sold for $290,900 on Feb 25, 2019

91 MILL ST

ORONO, ME 04473
4
Beds
3.5
Baths
3,402 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1840
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
12
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$290,900 · Feb 25, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,109 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$307,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$34,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$272,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$281,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
CountyPENOBSCOT
Lot (acres)The size of the land the home sits on, from county records.0.24
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Asa C Adams SchoolA+
Elementary · Grades PK–5 · 0.4 mi
H
Orono High SchoolB
High · Grades 9–12 · 0.4 mi
M
Orono Middle SchoolA-
Middle · Grades 6–8 · 0.5 mi

District: Regional School Unit 26

Neighborhood · ZIP 04473These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.76
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.59

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.11,793
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.602 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,243
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,508
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

91 Mill St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Bigger than 96% of homes in Orono 04473
  • Has a smaller lot than 81% of homes in Orono 04473
  • Among the oldest homes in Penobscot County

How it measures up in Orono 04473

The dot is this home. The mark in the middle is the typical home in Orono 04473.

Living area3,402 ft²
SmallerTypical 1,539 ft²Bigger

Bigger than 96% of homes nearby

Lot size0.24 ac
SmallerTypical 0.48 acBigger

Bigger than 19% of homes nearby

Year built1840
OlderTypical 1956Newer

Newer than 3% of homes nearby

How 91 Mill St ranks against every home in each area.
MeasureThis homeOrono 04473Penobscot County
Living areabigger than3,402 ft²96% of homes96% of homes
Lot sizebigger than0.24 ac19% of homes20% of homes
Year builtnewer than18403% of homesalmost no homes

About 91 Mill St

When did 91 Mill St, Orono, ME last sell?

91 Mill St, Orono, ME last sold on Feb 25, 2019 for $290,900, according to the county's recorded deed.

How big is 91 Mill St, Orono, ME?

91 Mill St, Orono, ME has 4 bedrooms, 3.5 bathrooms, 3,402 square feet of living space and a 0.24-acre lot.

When was 91 Mill St, Orono, ME built?

91 Mill St, Orono, ME was built in 1840, making it 186 years old. The building has 2 stories.

What schools serve 91 Mill St, Orono, ME?

91 Mill St, Orono, ME is assigned to Asa C Adams School (elementary), rated A+; Orono High School (high), rated B; Orono Middle School (middle), rated A-. All sit in Regional School Unit 26. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 91 Mill St, Orono, ME compare to other homes in Orono 04473?

Among the 1,809 homes in Orono 04473, it is bigger than 96% of them (3,402 ft² against a typical 1,539 ft²), its lot is bigger than 19% of them (0.24 ac against a typical 0.48 ac) and it is newer than 3% of them (1840 against a typical 1956). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 91 Mill St, Orono, ME?

The 2025 property tax bill for 91 Mill St, Orono, ME was $6,109. The county assessed it at $307,000.

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