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Single Family ResidenceResidential
$80,948$68 / 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 Oct 21, 2026
Last sold for $56,500 on Jul 25, 2023

623 N 18TH ST

DUNCAN, OK 73533
3
Beds
1
Baths
1,184 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$81K
$69K low$92K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$56,500 · Jul 25, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$520 (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.$6,449 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$775
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,674
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$6,171
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$58,626

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Traditional/Old
CountySTEPHENS
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.Porch · 176 ft²

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.

H
Duncan High SchoolB-
High · Grades 9–12 · 0.1 mi
E
Horace Mann Elementary SchoolA-
Elementary · Grades KG–5 · 0.6 mi
M
Duncan Middle SchoolB+
Middle · Grades 6–8 · 0.9 mi

District: Duncan Public Schools

Neighborhood · ZIP 73533These 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.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.78

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.20%
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.26,673
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.153 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,268
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$75,226
Average tempThe average temperature here across a full year.62°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.62%

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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

623 N 18th 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.

  • Worth less than 70% of homes in Stephens County
  • Costs less per square foot than 67% of homes in Stephens County
  • Smaller than 73% of homes in Stephens County
  • Has a smaller lot than 71% of homes in Stephens County

What homes are worth in Duncan 73533

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

This home
$24K$592K

This home is worth more than 35% of homes in Duncan 73533.

How it measures up in Duncan 73533

The dot is this home. The mark in the middle is the typical home in Duncan 73533.

Estimated value$80,948
CheaperTypical $125,494Pricier

Pricier than 35% of homes nearby

Price per ft²$68
CheaperTypical $84Pricier

Pricier than 39% of homes nearby

Living area1,184 ft²
SmallerTypical 1,500 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.2 ac
SmallerTypical 0.24 acBigger

Bigger than 36% of homes nearby

Year built1959
OlderTypical 1963Newer

Newer than 45% of homes nearby

How 623 N 18th St ranks against every home in each area.
MeasureThis homeDuncan 73533Stephens County
Estimated valuepricier than$80,94835% of homes30% of homes
Price per ft²pricier than$6839% of homes33% of homes
Living areabigger than1,184 ft²28% of homes27% of homes
Lot sizebigger than0.2 ac36% of homes29% of homes
Year builtnewer than195945% of homes38% of homes

About 623 N 18th St

How much is 623 N 18th St, Duncan, OK worth?

The TopHap Estimate for 623 N 18th St, Duncan, OK is $80,948 as of Oct 21, 2026. The likely range is $69,423 to $92,473. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 623 N 18th St, Duncan, OK last sell?

623 N 18th St, Duncan, OK last sold on Jul 25, 2023 for $56,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 623 N 18th St, Duncan, OK?

623 N 18th St, Duncan, OK has 3 bedrooms, 1 bathrooms, 1,184 square feet of living space and a 0.20-acre lot.

When was 623 N 18th St, Duncan, OK built?

623 N 18th St, Duncan, OK was built in 1959, making it 67 years old. It is a traditional/old home. The building has 1 story.

What schools serve 623 N 18th St, Duncan, OK?

623 N 18th St, Duncan, OK is assigned to Duncan High School (high), rated B-; Horace Mann Elementary School (elementary), rated A-; Duncan Middle School (middle), rated B+. All sit in Duncan Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 623 N 18th St, Duncan, OK compare to other homes in Duncan 73533?

Among the 12,027 homes in Duncan 73533, it is worth more than 35% of them ($80,948 against a typical $125,494), its price per square foot is higher than 39% of them ($68 against a typical $84), it is bigger than 28% of them (1,184 ft² against a typical 1,500 ft²), its lot is bigger than 36% of them (0.2 ac against a typical 0.24 ac) and it is newer than 45% of them (1959 against a typical 1963). Measured against all of Stephens County, it is worth more than 30% of 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 623 N 18th St, Duncan, OK?

The 2025 property tax bill for 623 N 18th St, Duncan, OK was $520. The county assessed it at $6,449.

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