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Single Family ResidentialResidential
$460,553
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 76How 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

121 15TH ST SE

WATERTOWN, SD 57201
0
Baths
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.

Valuation

$461K
$350K low$571K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,667 (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.$250,082 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$56,271
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$193,811
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$250,082

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.35 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 Residential
CountyCODINGTON
Lot (acres)The size of the land the home sits on, from county records.0.25
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

H
Watertown High SchoolC
High · Grades 9–12 · 0.7 mi
E
Roosevelt Elementary SchoolD
Elementary · Grades KG–4 · 1.1 mi
M
Watertown Middle SchoolA
Middle · Grades 7–8 · 2.0 mi

District: Watertown School District 14-4

Neighborhood · ZIP 57201These 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.119
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.22

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.5%
PopulationHow many people live in this area.26,802
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.81 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,378
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,941
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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

121 15th St Se 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.

What homes are worth in Watertown 57201

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

This home
$166K$1.1M

This home is worth more than 38% of homes in Watertown 57201.

How it measures up in Watertown 57201

The dot is this home. The mark in the middle is the typical home in Watertown 57201.

Estimated value$460,553
CheaperTypical $577,695Pricier

Pricier than 38% of homes nearby

Lot size0.25 ac
SmallerTypical 0.25 acBigger

Bigger than 50% of homes nearby

Year built1969
OlderTypical 1978Newer

Newer than 40% of homes nearby

How 121 15th St Se ranks against every home in each area.
MeasureThis homeWatertown 57201
Estimated valuepricier than$460,55338% of homes
Lot sizebigger than0.25 ac50% of homes
Year builtnewer than196940% of homes

About 121 15th St Se

How much is 121 15th St Se, Watertown, SD worth?

The TopHap Estimate for 121 15th St Se, Watertown, SD is $460,553 as of Sep 24, 2026. The likely range is $349,774 to $571,333. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 15th St Se, Watertown, SD last sell?

121 15th St Se, Watertown, SD last sold on Jan 1, 1900, according to the county's recorded deed.

When was 121 15th St Se, Watertown, SD built?

121 15th St Se, Watertown, SD was built in 1969, making it 57 years old.

What schools serve 121 15th St Se, Watertown, SD?

121 15th St Se, Watertown, SD is assigned to Watertown High School (high), rated C; Roosevelt Elementary School (elementary), rated D; Watertown Middle School (middle), rated A. All sit in Watertown School District 14-4. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 15th St Se, Watertown, SD compare to other homes in Watertown 57201?

Among the 10,095 homes in Watertown 57201, it is worth more than 38% of them ($460,553 against a typical $577,695), its lot is bigger than 50% of them (0.25 ac against a typical 0.25 ac) and it is newer than 40% of them (1969 against a typical 1978). 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 15th St Se, Watertown, SD?

The 2026 property tax bill for 121 15th St Se, Watertown, SD was $2,667. The county assessed it at $250,082.

More homes on 15th St Se

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See this home in context

Open 121 15th St Se on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

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