Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$85,144$126 / 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 68How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

518 PROSPECT ST

ONAGA, KS 66521
2
Beds
1
Baths
676 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.
1920
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$85K
$58K low$112K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$514 (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.$4,669 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$561
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,108
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$4,469
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$40,600

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
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Stone (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Floor/Wall Furnace
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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 · 144 ft²Shed · 288 ft²Patio · 144 ft²Porch · 272 ft²

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%

Owner Tools

Do you own this home?
Claim this home

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

518 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 90% 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 83% 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
$82K$531K

This home is worth more than 2% 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$85,144
CheaperTypical $206,943Pricier

Pricier than 2% of homes nearby

Price per ft²$126
CheaperTypical $139Pricier

Pricier than 41% of homes nearby

Living area676 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.14 ac
SmallerTypical 1 acBigger

Bigger than 3% of homes nearby

Year built1920
OlderTypical 1930Newer

Newer than 45% of homes nearby

How 518 Prospect St ranks against every home in each area.
MeasureThis homeOnaga 66521Pottawatomie County
Estimated valuepricier than$85,1442% of homesalmost no homes
Price per ft²pricier than$12641% of homes10% of homes
Living areabigger than676 ft²2% of homesalmost no homes
Lot sizebigger than0.14 ac3% of homes3% of homes
Year builtnewer than192045% of homes17% of homes

About 518 Prospect St

How much is 518 Prospect St, Onaga, KS worth?

The TopHap Estimate for 518 Prospect St, Onaga, KS is $85,144 as of Aug 30, 2026. The likely range is $58,235 to $112,053. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 518 Prospect St, Onaga, KS?

518 Prospect St, Onaga, KS has 2 bedrooms, 1 bathrooms, 676 square feet of living space and a 0.14-acre lot.

When was 518 Prospect St, Onaga, KS built?

518 Prospect St, Onaga, KS was built in 1920, making it 106 years old. The building has 1 story.

What schools serve 518 Prospect St, Onaga, KS?

518 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 518 Prospect St, Onaga, KS compare to other homes in Onaga 66521?

Among the 693 homes in Onaga 66521, it is worth more than 2% of them ($85,144 against a typical $206,943), its price per square foot is higher than 41% of them ($126 against a typical $139), it is bigger than 2% of them (676 ft² against a typical 1,456 ft²), its lot is bigger than 3% of them (0.14 ac against a typical 1 ac) and it is newer than 45% of them (1920 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 518 Prospect St, Onaga, KS?

The 2024 property tax bill for 518 Prospect St, Onaga, KS was $514. The county assessed it at $4,669.

More homes on Prospect St

Closest homes

More homes in Onaga 66521

Assigned schools

Explore the area

See this home in context

Open 518 Prospect St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map