Aurora Is Illinois' Second-Largest City. Four Counties, a Divided Market, and a School District Premium That Reaches $300,000.

Aurora is one of the most geographically segmented appraisal markets in the Chicago metropolitan area. The city spans four counties, with Kane County covering most of the west and central portions and DuPage County covering the far east side near the Wheatlands area. Each county carries its own effective tax rate: Kane County runs approximately 2.40%, while DuPage County portions of Aurora run from 2.51% to 2.63%. Each has different townships, different assessors, and different Board of Review processes. Comps drawn from the wrong county introduce error before the analysis even begins.

The Fox River is a genuine market boundary, not just a geographic feature. West-side neighborhoods, Georgetown, Fox Chase, Prairie Village, and Ginger Woods, price from $180,000 to $350,000 and are served primarily by Aurora Township District 129. East-side and far-east communities, Stonebridge, Oakhurst, Colony Lakes, and Wheatlands, price from $285,000 to $750,000 and are served by Indian Prairie School District 204, one of the top-rated districts in Illinois. East-side buyers do not cross the river to compete for west-side properties. West-side comps do not belong in east-side reports. An appraiser treating Aurora as a single unified market is working from the wrong premise.

Housing stock adds another dimension. About 43.5% of Aurora's units predate 1980, concentrated in the west-side Neighborhood Revitalization Strategy Area where 88.4% of units were built before 1980. The Garland Historic District, listed on the National Register of Historic Places, covers parts of the west side and creates additional regulatory complexity for renovation that factors into the cost approach for affected properties. At the same time, far-east Aurora sees active new construction from national builders, with product starting near $400,000. Comp selection requires matching vintage, geography, and school district simultaneously, which is not a standard suburban appraisal workflow.

Aurora's value structure runs east to west across the Fox River. On the west side, Georgetown, Fox Chase, Prairie Village, and Ginger Woods represent the city's more affordable tier, with prices from roughly $180,000 to $350,000 and housing stock ranging from mid-century to 1980s construction. The Garland Historic District near downtown holds a small number of well-preserved Victorian and early-20th-century homes that require specialized comparable research. East of the river, the market shifts toward 1980s and 1990s construction in the $300,000 to $500,000 range. The far east side, ZIP codes 60502 and 60503, is where the market makes its largest jump.

Stonebridge median prices run near $637,000. Oakhurst and Oakhurst North range from $400,000 to $650,000. Wheatlands, a large planned community near the DuPage County line, spans $285,000 to $629,000 depending on vintage and unit size. Colony Lakes and Grand Pointe Trails fill the $350,000 to $600,000 range. All of these far-east communities fall within Indian Prairie 204. The BNSF Metra line serves downtown Aurora with two stations and express service to Union Station in approximately 45 minutes, which directly supports demand in east-side commuter households. Properties adjacent to the BNSF main line through downtown carry a noise and proximity discount. Fox River flood zones (Zone AE) along the west-side riverbanks and Big Creek tributary require NFIP insurance and affect comp selection for any parcel within the mapped area.