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Duplex (2 Units, Any Combination)Residential
Last sold for $73,400 on Sep 30, 1999

809 21ST AVE

ROCKFORD, IL 61104
4
Beds
2
Baths
2,278 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.
3,920 ft²
Lot SizeThe size of the land the home sits on, from county records.
1929
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$73,400 · Sep 30, 1999
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$74,287
PRISM MORTGAGE CO · recorded Oct 7, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,187 (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.$30,769 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$29,169
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$27,613
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$92,307

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.39
39
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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.
60
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.90
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.

Foreclosure Filings(2)

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

E
Riverdahl Elementary SchoolD+
Elementary · Grades KG–5 · 1.6 mi
M
RESA Middle SchoolD
Middle · Grades 6–8 · 2.0 mi
H
Jefferson High SchoolF
High · Grades 9–12 · 3.5 mi

District: Rockford School District 205

Neighborhood · ZIP 61104These 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.157
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 100.39

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.6.0%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.36%
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.17,656
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,783 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$34,362
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$47,725
Average tempThe average temperature here across a full year.48°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.52%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

809 21st Ave 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.

  • Bigger than 82% of homes in South Sixth Street
  • Among the smallest lots in South Sixth Street
  • Older than 87% of homes in Winnebago County

How it measures up in Rockford 61104

The dot is this home. The mark in the middle is the typical home in Rockford 61104.

Living area2,278 ft²
SmallerTypical 1,583 ft²Bigger

Bigger than 82% of homes nearby

Lot size3,920 ft²
SmallerTypical 0.17 acBigger

Smaller than almost all homes nearby

Year built1929
OlderTypical 1920Newer

Newer than 71% of homes nearby

How 809 21st Ave ranks against every home in each area.
MeasureThis homeSouth Sixth StreetRockford 61104Winnebago County
Living areabigger than2,278 ft²82% of homes82% of homes80% of homes
Lot sizebigger than3,920 ft²almost no homesalmost no homesalmost no homes
Year builtnewer than192981% of homes71% of homes13% of homes

About 809 21st Ave

When did 809 21st Ave, Rockford, IL last sell?

809 21st Ave, Rockford, IL last sold on Sep 30, 1999 for $73,400, according to the county's recorded deed.

How big is 809 21st Ave, Rockford, IL?

809 21st Ave, Rockford, IL has 4 bedrooms, 2 bathrooms, 2,278 square feet of living space and a 0.90-acre lot.

When was 809 21st Ave, Rockford, IL built?

809 21st Ave, Rockford, IL was built in 1929, making it 97 years old. The building has 2 stories.

What schools serve 809 21st Ave, Rockford, IL?

809 21st Ave, Rockford, IL is assigned to Riverdahl Elementary School (elementary), rated D+; RESA Middle School (middle), rated D; Jefferson High School (high), rated F. All sit in Rockford School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 809 21st Ave, Rockford, IL compare to other homes in Rockford 61104?

Among the 4,606 homes in Rockford 61104, it is bigger than 82% of them (2,278 ft² against a typical 1,583 ft²), its lot is bigger than almost none of them (3,920 ft² against a typical 0.17 ac) and it is newer than 71% of them (1929 against a typical 1920). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 809 21st Ave, Rockford, IL?

The 2025 property tax bill for 809 21st Ave, Rockford, IL was $2,187. The county assessed it at $30,769.

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Assigned schools

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