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Single Family ResidenceResidential
$594,893$169 / 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 85How 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

321 EMMA ST

SAINT ONGE, SD 57779
4
Baths
3,528 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.
1.68 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.

Valuation

$595K
$504K low$686K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,960 (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.$304,190 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$17,630
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$286,560
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$295,940
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$270,300

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.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
CountyLAWRENCE
Lot (acres)The size of the land the home sits on, from county records.1.68
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
Spearfish High School - 01C+
High · Grades 9–12 · 7.7 mi
M
Spearfish Middle School - 05B-
Middle · Grades 6–8 · 7.8 mi
E
West Elementary - 03
Elementary · Grades 1–2 · 8.4 mi

District: Spearfish School District 40-2

Neighborhood · ZIP 57779These 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.24
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 100.27

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.894
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.22 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,383
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$114,779
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.21 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

321 Emma 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.

  • Costs less per square foot than 95% of homes in Lawrence County
  • Bigger than 98% of homes in Saint Onge 57779
  • Has a bigger lot than 67% of homes in Lawrence County
  • Older than 90% of homes in Lawrence County

What homes are worth in Saint Onge 57779

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

This home
$307K$1.4M

This home is worth more than 44% of homes in Saint Onge 57779.

How it measures up in Saint Onge 57779

The dot is this home. The mark in the middle is the typical home in Saint Onge 57779.

Estimated value$594,893
CheaperTypical $670,519Pricier

Pricier than 44% of homes nearby

Price per ft²$169
CheaperTypical $474Pricier

Pricier than 8% of homes nearby

Living area3,528 ft²
SmallerTypical 1,340 ft²Bigger

Bigger than 98% of homes nearby

Lot size1.68 ac
SmallerTypical 0.48 acBigger

Bigger than 57% of homes nearby

Year built1910
OlderTypical 1978Newer

Newer than 14% of homes nearby

How 321 Emma St ranks against every home in each area.
MeasureThis homeSaint Onge 57779Lawrence County
Estimated valuepricier than$594,89344% of homes62% of homes
Price per ft²pricier than$1698% of homes5% of homes
Living areabigger than3,528 ft²98% of homes98% of homes
Lot sizebigger than1.68 ac57% of homes67% of homes
Year builtnewer than191014% of homes10% of homes

About 321 Emma St

How much is 321 Emma St, Saint Onge, SD worth?

The TopHap Estimate for 321 Emma St, Saint Onge, SD is $594,893 as of Aug 30, 2026. The likely range is $504,186 to $685,600. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Emma St, Saint Onge, SD last sell?

321 Emma St, Saint Onge, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 321 Emma St, Saint Onge, SD?

321 Emma St, Saint Onge, SD has 4 bathrooms, 3,528 square feet of living space and a 1.68-acre lot.

When was 321 Emma St, Saint Onge, SD built?

321 Emma St, Saint Onge, SD was built in 1910, making it 116 years old.

What schools serve 321 Emma St, Saint Onge, SD?

321 Emma St, Saint Onge, SD is assigned to Spearfish High School - 01 (high), rated C+; Spearfish Middle School - 05 (middle), rated B-; West Elementary - 03 (elementary). All sit in Spearfish School District 40-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Emma St, Saint Onge, SD compare to other homes in Saint Onge 57779?

Among the 208 homes in Saint Onge 57779, it is worth more than 44% of them ($594,893 against a typical $670,519), its price per square foot is higher than 8% of them ($169 against a typical $474), it is bigger than 98% of them (3,528 ft² against a typical 1,340 ft²), its lot is bigger than 57% of them (1.68 ac against a typical 0.48 ac) and it is newer than 14% of them (1910 against a typical 1978). Measured against all of Lawrence 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 321 Emma St, Saint Onge, SD?

The 2025 property tax bill for 321 Emma St, Saint Onge, SD was $2,960. The county assessed it at $304,190.

More homes on Emma St

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