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Single Family ResidenceResidential
$248,971
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 96How 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

3121 PRINCIPIA DR

SPRINGFIELD, IL 62704
0
Baths
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$249K
$240K low$258K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,689 (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.$76,270 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,518
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$64,752
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$71,134
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$228,810

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySANGAMON
Lot (acres)The size of the land the home sits on, from county records.0.30
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

E
Sandburg Elementary SchoolC
Elementary · Grades KG–5 · 0.9 mi
M
Franklin Middle SchoolC-
Middle · Grades 6–8 · 2.1 mi
H
Southeast High SchoolD
High · Grades 9–12 · 4.7 mi

District: Springfield School District 186

Neighborhood · ZIP 62704These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.52

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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.37,061
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,239 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,606
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,062
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

3121 Principia Dr 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 73% of homes in Springfield 62704
  • Has a bigger lot than 83% of homes in Springfield 62704

What homes are worth in Springfield 62704

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

This home
$60K$590K

This home is worth more than 73% of homes in Springfield 62704.

How it measures up in Springfield 62704

The dot is this home. The mark in the middle is the typical home in Springfield 62704.

Estimated value$248,971
CheaperTypical $192,727Pricier

Pricier than 73% of homes nearby

Lot size0.3 ac
SmallerTypical 0.2 acBigger

Bigger than 83% of homes nearby

How 3121 Principia Dr ranks against every home in each area.
MeasureThis homeWestchesterSpringfield 62704Sangamon County
Estimated valuepricier than$248,97169% of homes73% of homes66% of homes
Lot sizebigger than0.3 ac80% of homes83% of homes66% of homes

About 3121 Principia Dr

How much is 3121 Principia Dr, Springfield, IL worth?

The TopHap Estimate for 3121 Principia Dr, Springfield, IL is $248,971 as of Aug 30, 2026. The likely range is $240,003 to $257,939. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3121 Principia Dr, Springfield, IL last sell?

3121 Principia Dr, Springfield, IL last sold on Nov 1, 2010, according to the county's recorded deed.

What schools serve 3121 Principia Dr, Springfield, IL?

3121 Principia Dr, Springfield, IL is assigned to Sandburg Elementary School (elementary), rated C; Franklin Middle School (middle), rated C-; Southeast High School (high), rated D. All sit in Springfield School District 186. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3121 Principia Dr, Springfield, IL compare to other homes in Springfield 62704?

Among the 14,693 homes in Springfield 62704, it is worth more than 73% of them ($248,971 against a typical $192,727) and its lot is bigger than 83% of them (0.3 ac against a typical 0.2 ac). Measured against all of Sangamon County, it is worth more than 66% 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 3121 Principia Dr, Springfield, IL?

The 2025 property tax bill for 3121 Principia Dr, Springfield, IL was $5,689. The county assessed it at $76,270.

More homes on Principia Dr

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Assigned schools

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