| County : | Dekalb County |
| State : | Illinois (IL) |
| Land Area : | 631.30 sq mi |
| Water Area : | 3.35 sq mi |
| Latitude : | 41.8946125 |
| Longitude : | -88.7689910 |
| Population (2010): | 105,160 |
| Population Estimate (2012) : | 104,820 |
| Population Density : | 166.58/sq mi |
| Housing Units (2012) : | 41,079 |
| Median Household Income (2012) : | $53,575 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $71,333 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $179,300 (Illinois : $190,800, USA : $181,400) |
Dekalb County Cities / Towns
| Cortland Town (4,270) | Dekalb City (43,862) | Genoa City (5,193) |
| Hinckley Village (2,070) | Kingston Village (1,164) | Kirkland Village (1,744) |
| Lee Village (337) | Malta Village (1,164) | Maple Park Village (1,310) |
| Sandwich City (7,421) | Shabbona Village (925) | Somonauk Village (1,893) |
| Sycamore City (17,519) | Waterman Village (1,506) |
Dekalb County Zip Codes
| 60111 (258) | 60112 (4,560) | 60115 (46,272) |
| 60129 (242) | 60135 (7,248) | 60140 (14,341) |
| 60145 (2,627) | 60146 (2,713) | 60150 (1,794) |
| 60151 (4,061) | 60152 (12,533) | 60178 (21,840) |
| 60511 (1,793) | 60518 (3,580) | 60520 (2,886) |
| 60530 (649) | 60531 (1,902) | 60548 (12,218) |
| 60550 (1,440) | 60552 (4,448) | 60556 (2,007) |
| 61068 (14,858) |