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Single Family ResidenceResidential
$350,025$256 / 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 95How 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

1121 DERBY ST

CASPER, WY 82609
2
Baths
1,368 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
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

$350K
$333K low$367K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,831 (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.$25,118 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,118
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$20,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$24,480
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$369,555

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.39
32
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
44
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.
19
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.5 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
Lot (acres)The size of the land the home sits on, from county records.0.25
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.Forced Air With Air Conditioning
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, 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.Deck · 252 ft²

Transaction History(8)

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
Centennial Middle SchoolC+
Middle · Grades 6–8 · 0.2 mi
E
Verda James Elementary SchoolA-
Elementary · Grades KG–5 · 0.5 mi
H
Kelly Walsh High SchoolB-
High · Grades 9–12 · 0.8 mi

District: Natrona County School District 1

Neighborhood · ZIP 82609These 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.98
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.88

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.91%
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.9.4%
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.19,080
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.125 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,363
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$106,057
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.16 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

1121 Derby 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.

  • Has a bigger lot than 75% of homes in Casper 82609

What homes are worth in Casper 82609

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

This home
$167K$933K

This home is worth more than 54% of homes in Casper 82609.

How it measures up in Casper 82609

The dot is this home. The mark in the middle is the typical home in Casper 82609.

Estimated value$350,025
CheaperTypical $335,917Pricier

Pricier than 54% of homes nearby

Price per ft²$256
CheaperTypical $251Pricier

Pricier than 53% of homes nearby

Living area1,368 ft²
SmallerTypical 1,409 ft²Bigger

Bigger than 46% of homes nearby

Lot size0.25 ac
SmallerTypical 0.19 acBigger

Bigger than 75% of homes nearby

Year built1978
OlderTypical 1977Newer

Newer than 56% of homes nearby

How 1121 Derby St ranks against every home in each area.
MeasureThis homeCasper 82609Natrona County
Estimated valuepricier than$350,02554% of homes62% of homes
Price per ft²pricier than$25653% of homes52% of homes
Living areabigger than1,368 ft²46% of homes59% of homes
Lot sizebigger than0.25 ac75% of homes70% of homes
Year builtnewer than197856% of homes57% of homes

About 1121 Derby St

How much is 1121 Derby St, Casper, WY worth?

The TopHap Estimate for 1121 Derby St, Casper, WY is $350,025 as of Aug 30, 2026. The likely range is $333,037 to $367,013. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1121 Derby St, Casper, WY last sell?

1121 Derby St, Casper, WY last sold on Jun 10, 2022, according to the county's recorded deed.

How big is 1121 Derby St, Casper, WY?

1121 Derby St, Casper, WY has 2 bathrooms, 1,368 square feet of living space and a 0.25-acre lot.

When was 1121 Derby St, Casper, WY built?

1121 Derby St, Casper, WY was built in 1978, making it 48 years old. It is a bi-level home. The building has 1 story.

What schools serve 1121 Derby St, Casper, WY?

1121 Derby St, Casper, WY is assigned to Centennial Middle School (middle), rated C+; Verda James Elementary School (elementary), rated A-; Kelly Walsh High School (high), rated B-. All sit in Natrona County School District 1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1121 Derby St, Casper, WY compare to other homes in Casper 82609?

Among the 5,954 homes in Casper 82609, it is worth more than 54% of them ($350,025 against a typical $335,917), its price per square foot is higher than 53% of them ($256 against a typical $251), it is bigger than 46% of them (1,368 ft² against a typical 1,409 ft²), its lot is bigger than 75% of them (0.25 ac against a typical 0.19 ac) and it is newer than 56% of them (1978 against a typical 1977). Measured against all of Natrona County, it is worth more than 62% 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 1121 Derby St, Casper, WY?

The 2025 property tax bill for 1121 Derby St, Casper, WY was $1,831. The county assessed it at $25,118.

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