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Rural ResidenceResidential
$424,989
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 92How 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

18654 ONION PL

UNION CENTER, SD 57787
0
Baths
313.64 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$425K
$390K low$460K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,710 (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.$233,322 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$86,148
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$147,174
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$223,245
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$233,322

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.17 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.possible but undetermined

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyMEADE
Lot (acres)The size of the land the home sits on, from county records.313.64
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.

E
Atall Elementary - 17
Elementary · Grades KG–8 · 6.3 mi
H
Sturgis Brown High School - 01B+
High · Grades 9–12 · 42.9 mi

District: Meade School District 46-1

Neighborhood · ZIP 57787These 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.145
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.21

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
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.407
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$69,193
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,257
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.17 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

18654 Onion Pl 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 83% of homes in Union Center 57787
  • Has a bigger lot than 97% of homes in Meade County

What homes are worth in Union Center 57787

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

This home
$160K$686K

This home is worth more than 83% of homes in Union Center 57787.

How it measures up in Union Center 57787

The dot is this home. The mark in the middle is the typical home in Union Center 57787.

Estimated value$424,989
CheaperTypical $329,753Pricier

Pricier than 83% of homes nearby

Lot size313.64 ac
SmallerTypical 280 acBigger

Bigger than 53% of homes nearby

How 18654 Onion Pl ranks against every home in each area.
MeasureThis homeUnion Center 57787Meade County
Estimated valuepricier than$424,98983% of homes56% of homes
Lot sizebigger than313.64 ac53% of homes97% of homes

About 18654 Onion Pl

How much is 18654 Onion Pl, Union Center, SD worth?

The TopHap Estimate for 18654 Onion Pl, Union Center, SD is $424,989 as of Aug 30, 2026. The likely range is $390,010 to $459,968. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18654 Onion Pl, Union Center, SD last sell?

18654 Onion Pl, Union Center, SD last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 18654 Onion Pl, Union Center, SD?

18654 Onion Pl, Union Center, SD is assigned to Atall Elementary - 17 (elementary); Sturgis Brown High School - 01 (high), rated B+. All sit in Meade School District 46-1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18654 Onion Pl, Union Center, SD compare to other homes in Union Center 57787?

Among the 146 homes in Union Center 57787, it is worth more than 83% of them ($424,989 against a typical $329,753) and its lot is bigger than 53% of them (313.64 ac against a typical 280 ac). Measured against all of Meade County, it is worth more than 56% 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 18654 Onion Pl, Union Center, SD?

The 2025 property tax bill for 18654 Onion Pl, Union Center, SD was $1,710. The county assessed it at $233,322.

Closest homes

More homes in Union Center 57787

Assigned schools

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