| County : | Mchenry County |
| State : | Illinois (IL) |
| Land Area : | 603.17 sq mi |
| Water Area : | 7.64 sq mi |
| Latitude : | 42.3242982 |
| Longitude : | -88.4522450 |
| Population (2010): | 308,760 |
| Population Estimate (2012) : | 308,163 |
| Population Density : | 511.90/sq mi |
| Housing Units (2012) : | 116,040 |
| Median Household Income (2012) : | $77,325 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $88,370 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $233,400 (Illinois : $190,800, USA : $181,400) |
Mchenry County Cities / Towns
| Algonquin Village (30,046) | Barrington Hills Village (4,209) | Bull Valley Village (1,077) |
| Cary Village (18,271) | Chemung (308) | Crystal Lake City (40,743) |
| Fox Lake Village (10,579) | Fox River Grove Village (4,854) | Greenwood Village (255) |
| Harvard City (9,447) | Hebron Village (1,216) | Holiday Hills Village (610) |
| Huntley Village (24,291) | Island Lake Village (8,080) | Johnsburg Village (6,337) |
| Lake in The Hills Village (28,965) | Lakemoor Village (6,017) | Lakewood Village (3,811) |
| Mccullom Lake Village (1,049) | Mchenry City (26,992) | Marengo City (7,648) |
| Oakwood Hills Village (2,083) | Pistakee Highlands (3,454) | Port Barrington Village (1,517) |
| Prairie Grove Village (1,904) | Richmond Village (1,874) | Ringwood Village (836) |
| Spring Grove Village (5,778) | Trout Valley Village (537) | Union Village (580) |
| Wonder Lake Village (4,026) | Woodstock City (24,770) |
Mchenry County Zip Codes
| 60010 (44,095) | 60012 (11,120) | 60013 (26,872) |
| 60014 (48,550) | 60021 (5,545) | 60033 (13,922) |
| 60034 (2,040) | 60042 (8,547) | 60050 (31,620) |
| 60051 (25,192) | 60071 (3,598) | 60072 (928) |
| 60081 (10,079) | 60097 (11,250) | 60098 (32,228) |
| 60102 (32,193) | 60135 (7,248) | 60142 (26,447) |
| 60152 (12,533) | 60156 (28,987) | 60180 (1,694) |
| 61038 (1,354) |