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Single Family ResidenceResidential
$173,861$108 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 86How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

509 DULUTH AVE S

THIEF RIVER FALLS, MN 56701
0
Baths
1,605 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1977
Year BuiltThe year the home was originally built, according to county records.

Valuation

$174K
$149K low$198K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$173,861
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$139,089

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,084 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$179,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$20,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$159,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$179,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$179,800

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.24
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
42
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
41
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
19
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyPENNINGTON
Lot (acres)The size of the land the home sits on, from county records.0.19
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

H
Lincoln Senior High SchoolC
High · Grades 9–12 · 0.3 mi
M
Franklin Middle SchoolC+
Middle · Grades 6–8 · 1.1 mi
E
Challenger Elementary SchoolC+
Elementary · Grades PK–5 · 1.4 mi

District: Thief River Falls School District

Neighborhood · ZIP 56701These 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.125
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.6

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.11,683
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.31 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,770
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,915
Average tempThe average temperature here across a full year.39°F
Annual precipHow much rain and melted snow falls here in a typical year.22 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

509 Duluth Ave S 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.

  • Costs less per square foot than 69% of homes in Thief River Falls 56701
  • Bigger than 68% of homes in Thief River Falls 56701
  • Has a smaller lot than 71% of homes in Thief River Falls 56701
  • Newer than 66% of homes in Thief River Falls 56701

What homes are worth in Thief River Falls 56701

Each bar is how many homes fall in that price range. The marker is this home.

This home
$35K$415K

This home is worth more than 51% of homes in Thief River Falls 56701.

How it measures up in Thief River Falls 56701

The dot is this home. The mark in the middle is the typical home in Thief River Falls 56701.

Estimated value$173,861
CheaperTypical $171,570Pricier

Pricier than 51% of homes nearby

Price per ft²$108
CheaperTypical $129Pricier

Pricier than 31% of homes nearby

Living area1,605 ft²
SmallerTypical 1,325 ft²Bigger

Bigger than 68% of homes nearby

Lot size0.19 ac
SmallerTypical 0.34 acBigger

Bigger than 29% of homes nearby

Year built1977
OlderTypical 1969Newer

Newer than 66% of homes nearby

How 509 Duluth Ave S ranks against every home in each area.
MeasureThis homeThief River Falls 56701
Estimated valuepricier than$173,86151% of homes
Price per ft²pricier than$10831% of homes
Living areabigger than1,605 ft²68% of homes
Lot sizebigger than0.19 ac29% of homes
Year builtnewer than197766% of homes

About 509 Duluth Ave S

How much is 509 Duluth Ave S, Thief River Falls, MN worth?

The TopHap Estimate for 509 Duluth Ave S, Thief River Falls, MN is $173,861 as of Jul 14, 2026. The likely range is $149,287 to $198,435. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Duluth Ave S, Thief River Falls, MN last sell?

509 Duluth Ave S, Thief River Falls, MN last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 Duluth Ave S, Thief River Falls, MN?

509 Duluth Ave S, Thief River Falls, MN has 1,605 square feet of living space and a 0.19-acre lot.

When was 509 Duluth Ave S, Thief River Falls, MN built?

509 Duluth Ave S, Thief River Falls, MN was built in 1977, making it 49 years old.

What schools serve 509 Duluth Ave S, Thief River Falls, MN?

509 Duluth Ave S, Thief River Falls, MN is assigned to Lincoln Senior High School (high), rated C; Franklin Middle School (middle), rated C+; Challenger Elementary School (elementary), rated C+. All sit in Thief River Falls School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Duluth Ave S, Thief River Falls, MN compare to other homes in Thief River Falls 56701?

Among the 4,896 homes in Thief River Falls 56701, it is worth more than 51% of them ($173,861 against a typical $171,570), its price per square foot is higher than 31% of them ($108 against a typical $129), it is bigger than 68% of them (1,605 ft² against a typical 1,325 ft²), its lot is bigger than 29% of them (0.19 ac against a typical 0.34 ac) and it is newer than 66% of them (1977 against a typical 1969). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 509 Duluth Ave S, Thief River Falls, MN?

The 2026 property tax bill for 509 Duluth Ave S, Thief River Falls, MN was $3,084. The county assessed it at $179,800.

Closest homes

More homes in Thief River Falls 56701

Assigned schools

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