| Zip Code : | 60151 |
| City : | Cortland town, Elburn village, Lily Lake village, Maple Park village, Virgil village |
| County : | DeKalb County, Kane County |
| State : | Illinois (IL) |
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| Land Area : | 81.53 sq mi |
| Water Area : | 0.11 sq mi |
| Latitude : | 41.9184749 |
| Longitude : | -88.5744680 |
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| Population (2010): | 4,061 |
| Population Estimate (2012) : | 4,281 |
| Population Density : | 49.81/sq mi |
| Housing Units (2012) : | 1,577 |
| Median Household Income (2012) : | $68,250 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $70,625 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $241,700 (Illinois : $190,800, USA : $181,400) |