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Single Family ResidenceResidential
$402,730$187 / 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 90How 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
Last sold for $379,050 on Oct 14, 2025

421 W 18TH ST

CASPER, WY 82601
3
Beds
2
Baths
2,157 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1949
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$403K
$363K low$443K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$379,050 · Oct 14, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,196 (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.$43,860 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,130
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$38,730
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$21,026
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$461,686

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.36
12
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
51
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
61
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
20
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.2 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.Bi-Level
CountyNATRONA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1983
Lot (acres)The size of the land the home sits on, from county records.0.16
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.Baseboard
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Built-in
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 · 271 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.

M
Dean Morgan Middle SchoolD-
Middle · Grades 6–8 · 0.3 mi
E
Cottonwood Elementary SchoolD
Elementary · Grades PK–5 · 0.6 mi
H
Natrona County High SchoolD+
High · Grades 9–12 · 0.7 mi

District: Natrona County School District 1

Neighborhood · ZIP 82601These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.83

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.29,052
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.51 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$71,179
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,597
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.14 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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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

421 W 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 more than 79% of homes in Casper 82601
  • Costs less per square foot than 87% of homes in Casper 82601
  • Bigger than 90% of homes in Casper 82601
  • Has a smaller lot than 67% of homes in Natrona County
  • Older than 86% of homes in Natrona County

What homes are worth in Casper 82601

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

This home
$135K$847K

This home is worth more than 79% of homes in Casper 82601.

How it measures up in Casper 82601

The dot is this home. The mark in the middle is the typical home in Casper 82601.

Estimated value$402,730
CheaperTypical $308,063Pricier

Pricier than 79% of homes nearby

Price per ft²$187
CheaperTypical $253Pricier

Pricier than 13% of homes nearby

Living area2,157 ft²
SmallerTypical 1,195 ft²Bigger

Bigger than 90% of homes nearby

Lot size0.16 ac
SmallerTypical 0.18 acBigger

Bigger than 39% of homes nearby

Year built1949
OlderTypical 1971Newer

Newer than 29% of homes nearby

How 421 W 18th St ranks against every home in each area.
MeasureThis homeCasper 82601Natrona County
Estimated valuepricier than$402,73079% of homes73% of homes
Price per ft²pricier than$18713% of homes13% of homes
Living areabigger than2,157 ft²90% of homes89% of homes
Lot sizebigger than0.16 ac39% of homes33% of homes
Year builtnewer than194929% of homes14% of homes

About 421 W 18th St

How much is 421 W 18th St, Casper, WY worth?

The TopHap Estimate for 421 W 18th St, Casper, WY is $402,730 as of Sep 24, 2026. The likely range is $362,794 to $442,666. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 W 18th St, Casper, WY last sell?

421 W 18th St, Casper, WY last sold on Oct 14, 2025 for $379,050, according to the county's recorded deed.

How big is 421 W 18th St, Casper, WY?

421 W 18th St, Casper, WY has 3 bedrooms, 2 bathrooms, 2,157 square feet of living space and a 0.16-acre lot.

When was 421 W 18th St, Casper, WY built?

421 W 18th St, Casper, WY was built in 1949, making it 77 years old. It is a bi-level home. The building has 1 story.

What schools serve 421 W 18th St, Casper, WY?

421 W 18th St, Casper, WY is assigned to Dean Morgan Middle School (middle), rated D-; Cottonwood Elementary School (elementary), rated D; Natrona County High School (high), rated D+. All sit in Natrona County School District 1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 W 18th St, Casper, WY compare to other homes in Casper 82601?

Among the 10,675 homes in Casper 82601, it is worth more than 79% of them ($402,730 against a typical $308,063), its price per square foot is higher than 13% of them ($187 against a typical $253), it is bigger than 90% of them (2,157 ft² against a typical 1,195 ft²), its lot is bigger than 39% of them (0.16 ac against a typical 0.18 ac) and it is newer than 29% of them (1949 against a typical 1971). Measured against all of Natrona County, it is worth more than 73% 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 421 W 18th St, Casper, WY?

The 2026 property tax bill for 421 W 18th St, Casper, WY was $3,196. The county assessed it at $43,860.

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