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Single Family ResidenceResidential
$142,926$142 / 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 Sep 24, 2026

421 S 1ST ST

RIVERTON, WY 82501
2
Beds
1
Baths
1,008 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.
4,200 ft²
Lot SizeThe size of the land the home sits on, from county records.
1946
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.

Valuation

$143K
$135K low$151K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$711 (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.$12,045 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,742
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$10,303
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$8,769
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$128,409

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.19
1
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.
50
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Ranch
CountyFREMONT
Lot (acres)The size of the land the home sits on, from county records.0.10
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.Floor/Wall Furnace
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.Shed · 64 ft²Porch · 49 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 SchoolC
Middle · Grades 6–8 · 1.4 mi
H
Riverton High SchoolC
High · Grades 9–12 · 1.5 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

421 S 1st 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 91% of homes in Fremont County
  • Costs less per square foot than 85% of homes in Fremont County
  • Smaller than 80% of homes in Riverton 82501
  • Has a smaller lot than 97% of homes in Fremont County
  • Older than 89% 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
$89K$729K

This home is worth more than 11% 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$142,926
CheaperTypical $253,802Pricier

Pricier than 11% of homes nearby

Price per ft²$142
CheaperTypical $170Pricier

Pricier than 25% of homes nearby

Living area1,008 ft²
SmallerTypical 1,555 ft²Bigger

Bigger than 20% of homes nearby

Lot size4,200 ft²
SmallerTypical 0.32 acBigger

Bigger than 4% of homes nearby

Year built1946
OlderTypical 1978Newer

Newer than 11% of homes nearby

How 421 S 1st St ranks against every home in each area.
MeasureThis homeRiverton 82501Fremont County
Estimated valuepricier than$142,92611% of homes9% of homes
Price per ft²pricier than$14225% of homes15% of homes
Living areabigger than1,008 ft²20% of homes21% of homes
Lot sizebigger than4,200 ft²4% of homes3% of homes
Year builtnewer than194611% of homes11% of homes

About 421 S 1st St

How much is 421 S 1st St, Riverton, WY worth?

The TopHap Estimate for 421 S 1st St, Riverton, WY is $142,926 as of Sep 24, 2026. The likely range is $135,307 to $150,545. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 S 1st St, Riverton, WY last sell?

421 S 1st St, Riverton, WY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 S 1st St, Riverton, WY?

421 S 1st St, Riverton, WY has 2 bedrooms, 1 bathrooms, 1,008 square feet of living space and a 0.10-acre lot.

When was 421 S 1st St, Riverton, WY built?

421 S 1st St, Riverton, WY was built in 1946, making it 80 years old. It is a ranch home. The building has 1 story.

What schools serve 421 S 1st St, Riverton, WY?

421 S 1st St, Riverton, WY is assigned to Riverton Middle School (middle), rated C; Riverton High School (high), rated C. All sit in Fremont County School District 25. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 S 1st St, Riverton, WY compare to other homes in Riverton 82501?

Among the 7,412 homes in Riverton 82501, it is worth more than 11% of them ($142,926 against a typical $253,802), its price per square foot is higher than 25% of them ($142 against a typical $170), it is bigger than 20% of them (1,008 ft² against a typical 1,555 ft²), its lot is bigger than 4% of them (4,200 ft² against a typical 0.32 ac) and it is newer than 11% of them (1946 against a typical 1978). Measured against all of Fremont County, it is worth more than 9% 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 S 1st St, Riverton, WY?

The 2025 property tax bill for 421 S 1st St, Riverton, WY was $711. The county assessed it at $12,045.

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