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Mobile HomeResidential
$330,845$174 / 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 69How 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

21 SUNNYSIDE AVE

RIVERTON, WY 82501
3
Beds
2
Baths
1,904 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.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$331K
$227K low$435K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$251 (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.$3,983 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,983
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,306
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$41,926

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.41
45
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
52
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
62
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
3
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.Mobile Home
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyFREMONT
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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 · 234 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Riverton Middle SchoolD+
Middle · Grades 6–8 · 2.4 mi
H
Riverton High SchoolD
High · Grades 9–12 · 2.6 mi

District: Fremont County School District 25

Neighborhood · ZIP 82501These 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.120
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.109

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
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.19,372
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.14 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$56,794
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$70,200
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.9 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

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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

21 Sunnyside Ave 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 70% of homes in Riverton 82501
  • Costs less per square foot than 69% of homes in Fremont County
  • Bigger than 67% of homes in Riverton 82501
  • Newer than 80% of homes in Riverton 82501

What homes are worth in Riverton 82501

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

This home
$93K$714K

This home is worth more than 70% of homes in Riverton 82501.

How it measures up in Riverton 82501

The dot is this home. The mark in the middle is the typical home in Riverton 82501.

Estimated value$330,845
CheaperTypical $254,110Pricier

Pricier than 70% of homes nearby

Price per ft²$174
CheaperTypical $171Pricier

Pricier than 52% of homes nearby

Living area1,904 ft²
SmallerTypical 1,536 ft²Bigger

Bigger than 67% of homes nearby

Year built1999
OlderTypical 1978Newer

Newer than 80% of homes nearby

How 21 Sunnyside Ave ranks against every home in each area.
MeasureThis homeRiverton 82501Fremont County
Estimated valuepricier than$330,84570% of homes50% of homes
Price per ft²pricier than$17452% of homes31% of homes
Living areabigger than1,904 ft²67% of homes67% of homes
Year builtnewer than199980% of homes77% of homes

About 21 Sunnyside Ave

How much is 21 Sunnyside Ave, Riverton, WY worth?

The TopHap Estimate for 21 Sunnyside Ave, Riverton, WY is $330,845 as of Sep 24, 2026. The likely range is $227,157 to $434,533. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Sunnyside Ave, Riverton, WY last sell?

21 Sunnyside Ave, Riverton, WY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Sunnyside Ave, Riverton, WY?

21 Sunnyside Ave, Riverton, WY has 3 bedrooms, 2 bathrooms and 1,904 square feet of living space.

When was 21 Sunnyside Ave, Riverton, WY built?

21 Sunnyside Ave, Riverton, WY was built in 1999, making it 27 years old. It is a mobile home home. The building has 1 story.

What schools serve 21 Sunnyside Ave, Riverton, WY?

21 Sunnyside Ave, Riverton, WY is assigned to Riverton Middle School (middle), rated D+; Riverton High School (high), rated D. All sit in Fremont County School District 25. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Sunnyside Ave, Riverton, WY compare to other homes in Riverton 82501?

Among the 7,412 homes in Riverton 82501, it is worth more than 70% of them ($330,845 against a typical $254,110), its price per square foot is higher than 52% of them ($174 against a typical $171), it is bigger than 67% of them (1,904 ft² against a typical 1,536 ft²) and it is newer than 80% of them (1999 against a typical 1978). Measured against all of Fremont County, it is worth more than 50% 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 21 Sunnyside Ave, Riverton, WY?

The 2025 property tax bill for 21 Sunnyside Ave, Riverton, WY was $251. The county assessed it at $3,983.

More homes on Sunnyside Ave

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Assigned schools

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