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Single Family ResidenceResidential
$98,600$149 / 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 63How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

510 PROSPECT ST

ONAGA, KS 66521
1
Beds
1
Baths
660 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$99K
$62K low$135K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$150 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,488 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$888
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,372
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$12,940

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyPOTTAWATOMIE
Lot (acres)The size of the land the home sits on, from county records.0.14
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Floor/Wall Furnace
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 60 ft²Patio · 60 ft²Porch · 64 ft²

Transaction History(2)

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
Onaga Senior High SchoolA-
High · Grades 9–12 · 0.1 mi
M
Onaga Middle SchoolB+
Middle · Grades 6–8 · 0.1 mi
E
Onaga Elementary SchoolC+
Elementary · Grades PK–5 · 0.1 mi

District: Onaga-Havensville-Wheaton Unified School District 322

Neighborhood · ZIP 66521These 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.166
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.52

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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.1,925
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,814
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,947
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

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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

510 Prospect 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.

  • Among the least valuable homes in Pottawatomie County
  • Costs less per square foot than 84% of homes in Pottawatomie County
  • Among the smallest homes in Pottawatomie County
  • Has a smaller lot than 97% of homes in Onaga 66521
  • Older than 91% of homes in Pottawatomie County

What homes are worth in Onaga 66521

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

This home
$92K$600K

This home is worth more than 6% of homes in Onaga 66521.

How it measures up in Onaga 66521

The dot is this home. The mark in the middle is the typical home in Onaga 66521.

Estimated value$98,600
CheaperTypical $215,916Pricier

Pricier than 6% of homes nearby

Price per ft²$149
CheaperTypical $148Pricier

Pricier than 51% of homes nearby

Living area660 ft²
SmallerTypical 1,465 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.14 ac
SmallerTypical 1 acBigger

Bigger than 3% of homes nearby

Year built1900
OlderTypical 1930Newer

Newer than 26% of homes nearby

How 510 Prospect St ranks against every home in each area.
MeasureThis homeOnaga 66521Pottawatomie County
Estimated valuepricier than$98,6006% of homesalmost no homes
Price per ft²pricier than$14951% of homes16% of homes
Living areabigger than660 ft²2% of homesalmost no homes
Lot sizebigger than0.14 ac3% of homes3% of homes
Year builtnewer than190026% of homes9% of homes

About 510 Prospect St

How much is 510 Prospect St, Onaga, KS worth?

The TopHap Estimate for 510 Prospect St, Onaga, KS is $98,600 as of Sep 24, 2026. The likely range is $62,077 to $135,123. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 510 Prospect St, Onaga, KS last sell?

510 Prospect St, Onaga, KS last sold on Jul 16, 2024, according to the county's recorded deed.

How big is 510 Prospect St, Onaga, KS?

510 Prospect St, Onaga, KS has 1 bedrooms, 1 bathrooms, 660 square feet of living space and a 0.14-acre lot.

When was 510 Prospect St, Onaga, KS built?

510 Prospect St, Onaga, KS was built in 1900, making it 126 years old. The building has 1 story.

What schools serve 510 Prospect St, Onaga, KS?

510 Prospect St, Onaga, KS is assigned to Onaga Senior High School (high), rated A-; Onaga Middle School (middle), rated B+; Onaga Elementary School (elementary), rated C+. All sit in Onaga-Havensville-Wheaton Unified School District 322. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 510 Prospect St, Onaga, KS compare to other homes in Onaga 66521?

Among the 693 homes in Onaga 66521, it is worth more than 6% of them ($98,600 against a typical $215,916), its price per square foot is higher than 51% of them ($149 against a typical $148), it is bigger than 2% of them (660 ft² against a typical 1,465 ft²), its lot is bigger than 3% of them (0.14 ac against a typical 1 ac) and it is newer than 26% of them (1900 against a typical 1930). Measured against all of Pottawatomie County, it is worth more than almost no homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 510 Prospect St, Onaga, KS?

The 2024 property tax bill for 510 Prospect St, Onaga, KS was $150. The county assessed it at $1,488.

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