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Single Family ResidenceResidential
$95,151$149 / 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 Jul 14, 2026

121 M ST

ROCK SPRINGS, WY 82901
1
Beds
1
Baths
640 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.
2,500 ft²
Lot SizeThe size of the land the home sits on, from county records.
1885
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$95K
$66K low$124K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$95,151
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$76,121

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$411 (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.$7,218 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$475
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$6,743
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,552
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$75,984

Climate Risk

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%

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
CountySWEETWATER
Lot (acres)The size of the land the home sits on, from county records.0.06
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.Heat Pump
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, Detached
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 · 72 ft²Porch · 64 ft²

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

H
Rock Springs High SchoolD+
High · Grades 9–12 · 0.6 mi
E
Desert View Elementary SchoolF
Elementary · Grades KG–3 · 1.9 mi
M
Rock Springs Junior High SchoolB-
Middle · Grades 7–8 · 2.0 mi

District: Sweetwater County School District 1

Neighborhood · ZIP 82901These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.94

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.87%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.26,822
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,762
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,803
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.7 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

121 M 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 98% of homes in Rock Springs 82901
  • Costs less per square foot than 67% of homes in Rock Springs 82901
  • Among the smallest homes in Rock Springs 82901
  • Has a smaller lot than 98% of homes in Rock Springs 82901
  • Among the oldest homes in Rock Springs 82901

What homes are worth in Rock Springs 82901

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

This home
$106K$699K

This home is worth more than 2% of homes in Rock Springs 82901.

How it measures up in Rock Springs 82901

The dot is this home. The mark in the middle is the typical home in Rock Springs 82901.

Estimated value$95,151
CheaperTypical $304,028Pricier

Pricier than 2% of homes nearby

Price per ft²$149
CheaperTypical $166Pricier

Pricier than 33% of homes nearby

Living area640 ft²
SmallerTypical 1,572 ft²Bigger

Smaller than almost all homes nearby

Lot size2,500 ft²
SmallerTypical 0.17 acBigger

Bigger than 2% of homes nearby

Year built1885
OlderTypical 1981Newer

Older than almost all homes nearby

How 121 M St ranks against every home in each area.
MeasureThis homeRock Springs 82901Sweetwater County
Estimated valuepricier than$95,1512% of homes2% of homes
Price per ft²pricier than$14933% of homes36% of homes
Living areabigger than640 ft²almost no homes2% of homes
Lot sizebigger than2,500 ft²2% of homes3% of homes
Year builtnewer than1885almost no homesalmost no homes

About 121 M St

How much is 121 M St, Rock Springs, WY worth?

The TopHap Estimate for 121 M St, Rock Springs, WY is $95,151 as of Jul 14, 2026. The likely range is $66,082 to $124,220. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 M St, Rock Springs, WY last sell?

121 M St, Rock Springs, WY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 121 M St, Rock Springs, WY?

121 M St, Rock Springs, WY has 1 bedrooms, 1 bathrooms, 640 square feet of living space and a 0.06-acre lot.

When was 121 M St, Rock Springs, WY built?

121 M St, Rock Springs, WY was built in 1885, making it 141 years old. It is a ranch home. The building has 1 story.

What schools serve 121 M St, Rock Springs, WY?

121 M St, Rock Springs, WY is assigned to Rock Springs High School (high), rated D+; Desert View Elementary School (elementary), rated F; Rock Springs Junior High School (middle), rated B-. All sit in Sweetwater County School District 1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 M St, Rock Springs, WY compare to other homes in Rock Springs 82901?

Among the 10,711 homes in Rock Springs 82901, it is worth more than 2% of them ($95,151 against a typical $304,028), its price per square foot is higher than 33% of them ($149 against a typical $166), it is bigger than almost none of them (640 ft² against a typical 1,572 ft²), its lot is bigger than 2% of them (2,500 ft² against a typical 0.17 ac) and it is newer than almost none of them (1885 against a typical 1981). Measured against all of Sweetwater County, it is worth more than 2% 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 121 M St, Rock Springs, WY?

The 2025 property tax bill for 121 M St, Rock Springs, WY was $411. The county assessed it at $7,218.

Closest homes

More homes in Rock Springs 82901

Assigned schools

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