As of 2008, the rental vacancy rate in Quincy stood at 8%, relatively high compared to the rest of the country. There are about 35,058 housing units, averaging $93,300 in value, 27% of which are occupied by renters. The rent to price ratio in Quincy is 0.6%, slightly higher than the Illinois average. For 18% of Quincy tenants, 30% or more of their income goes to paying rent.
Quincy has a population of 76,886, comprised of 31,128 households, with on average 2 members per household. Out of approximately 41,190 people in the civilian workforce, 39,338 (96%) were employed in 2008. 88% of the population 25 and older has earned a high school diploma, with 20% holding a 4 year college degree.