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Single Family ResidenceResidential
$84,278$87 / 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 Oct 21, 2026
Last sold for $36,000 on Oct 3, 2018

421 W UNION ST

ROCKTON, IL 61072
2
Beds
0
Baths
974 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$84K
$72K low$97K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$36,000 · Oct 3, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,519 (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.$19,957 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$10,197
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$9,760
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$18,262
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$59,871

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.31
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
24
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
61
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.31
HeatingThe type of heating system in the home.Gas
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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.

H
Hononegah Chd High SchoolA
High · Grades 9–12 · 0.6 mi
E
Rockton Elementary School
Elementary · Grades PK–2 · 1.1 mi
M
Stephen Mack Middle SchoolA-
Middle · Grades 6–8 · 2.0 mi

District: Hononegah Community High School District 207

Neighborhood · ZIP 61072These 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.71
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.33

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.11,070
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.189 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,244
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,573
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

421 W Union 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.

  • Among the least valuable homes in Rockton 61072
  • Among the lowest price per square foot in Rockton 61072
  • Smaller than 89% of homes in Winnebago County
  • Has a smaller lot than 76% of homes in Rockton 61072

What homes are worth in Rockton 61072

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

This home
$125K$541K

This home is worth less than almost all homes in Rockton 61072.

How it measures up in Rockton 61072

The dot is this home. The mark in the middle is the typical home in Rockton 61072.

Estimated value$84,278
CheaperTypical $294,561Pricier

Cheaper than almost all homes nearby

Price per ft²$87
CheaperTypical $202Pricier

Cheaper than almost all homes nearby

Living area974 ft²
SmallerTypical 1,351 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.31 ac
SmallerTypical 0.44 acBigger

Bigger than 24% of homes nearby

How 421 W Union St ranks against every home in each area.
MeasureThis homeRockton 61072Winnebago County
Estimated valuepricier than$84,278almost no homes7% of homes
Price per ft²pricier than$87almost no homes18% of homes
Living areabigger than974 ft²14% of homes11% of homes
Lot sizebigger than0.31 ac24% of homes55% of homes

About 421 W Union St

How much is 421 W Union St, Rockton, IL worth?

The TopHap Estimate for 421 W Union St, Rockton, IL is $84,278 as of Oct 21, 2026. The likely range is $71,804 to $96,752. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 W Union St, Rockton, IL last sell?

421 W Union St, Rockton, IL last sold on Oct 3, 2018 for $36,000, according to the county's recorded deed.

How big is 421 W Union St, Rockton, IL?

421 W Union St, Rockton, IL has 2 bedrooms, 974 square feet of living space and a 0.31-acre lot.

What schools serve 421 W Union St, Rockton, IL?

421 W Union St, Rockton, IL is assigned to Hononegah Chd High School (high), rated A; Rockton Elementary School (elementary); Stephen Mack Middle School (middle), rated A-. All sit in Hononegah Community High School District 207. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 W Union St, Rockton, IL compare to other homes in Rockton 61072?

Among the 4,008 homes in Rockton 61072, it is worth more than almost none of them ($84,278 against a typical $294,561), its price per square foot is higher than almost none of them ($87 against a typical $202), it is bigger than 14% of them (974 ft² against a typical 1,351 ft²) and its lot is bigger than 24% of them (0.31 ac against a typical 0.44 ac). Measured against all of Winnebago County, it is worth more than 7% 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 421 W Union St, Rockton, IL?

The 2025 property tax bill for 421 W Union St, Rockton, IL was $1,519. The county assessed it at $19,957.

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