Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$81,694
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 68How 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
Last sold for $40,000 on Apr 27, 2005

520 S TONICA ST

MASON CITY, IL 62664
0
Baths
0.74 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$82K
$56K low$108K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$40,000 · Apr 27, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,293 (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.$25,914 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,178
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$23,736
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$23,664
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$77,742

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.10 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
CountyMASON
Lot (acres)The size of the land the home sits on, from county records.0.74
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.

M
Illini Central Middle SchoolC
Middle · Grades 6–8 · 0.7 mi
E
Illini Central Grade SchoolC-
Elementary · Grades KG–5 · 0.7 mi
H
Illini Central High SchoolD+
High · Grades 9–12 · 0.7 mi

District: Illini Central Community Unit School District 189

Neighborhood · ZIP 62664These 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 100.44

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.2,688
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.24 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,372
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$93,162
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

Owner Tools

Do you own this home?
Claim this home

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

520 S Tonica 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.

  • Has a bigger lot than 71% of homes in Mason City 62664

What homes are worth in Mason City 62664

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

This home
$21K$557K

This home is worth more than 37% of homes in Mason City 62664.

How it measures up in Mason City 62664

The dot is this home. The mark in the middle is the typical home in Mason City 62664.

Estimated value$81,694
CheaperTypical $105,182Pricier

Pricier than 37% of homes nearby

Lot size0.74 ac
SmallerTypical 0.33 acBigger

Bigger than 71% of homes nearby

How 520 S Tonica St ranks against every home in each area.
MeasureThis homeMason City 62664Mason County
Estimated valuepricier than$81,69437% of homes50% of homes
Lot sizebigger than0.74 ac71% of homes66% of homes

About 520 S Tonica St

How much is 520 S Tonica St, Mason City, IL worth?

The TopHap Estimate for 520 S Tonica St, Mason City, IL is $81,694 as of Sep 24, 2026. The likely range is $55,555 to $107,833. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 520 S Tonica St, Mason City, IL last sell?

520 S Tonica St, Mason City, IL last sold on Apr 27, 2005 for $40,000, according to the county's recorded deed.

What schools serve 520 S Tonica St, Mason City, IL?

520 S Tonica St, Mason City, IL is assigned to Illini Central Middle School (middle), rated C; Illini Central Grade School (elementary), rated C-; Illini Central High School (high), rated D+. All sit in Illini Central Community Unit School District 189. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 520 S Tonica St, Mason City, IL compare to other homes in Mason City 62664?

Among the 1,354 homes in Mason City 62664, it is worth more than 37% of them ($81,694 against a typical $105,182) and its lot is bigger than 71% of them (0.74 ac against a typical 0.33 ac). Measured against all of Mason County, it is worth more than 50% 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 520 S Tonica St, Mason City, IL?

The 2025 property tax bill for 520 S Tonica St, Mason City, IL was $2,293. The county assessed it at $25,914.

More homes on S Tonica St

Closest homes

More homes in Mason City 62664

Assigned schools

Explore the area

See this home in context

Open 520 S Tonica St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map