Mendon vs Quincy

A side-by-side comparison of Mendon and Quincy: population, income, housing, and more.

Mendon and Quincy are places in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Quincy has the higher population (39,188 vs 1,131 in Mendon). Mendon has the higher median household income ($62,778 vs $56,372 in Quincy). Quincy has the higher median home value ($146,100 vs $108,500 in Mendon).

Population, income & housing

	Mendon	Quincy
Population	1,131	39,188
Median age	37.2 yrs	40.1 yrs
Median household income	$62,778	$56,372
Median home value	$108,500	$146,100
Median gross rent	$661	$824
Housing units	445	19,026
Homeownership rate	77.5%	64.8%
Bachelor's degree or higher	12.3%	26.6%
Unemployment rate	5.0%	4.2%

Trends (ACS 5-year, 2019–2023)

	Mendon	Quincy
Population	843 → 1,131 (+34.2%)	40,280 → 39,188 (-2.7%)
Median household income	$53,421 → $62,778 (+17.5%)	$46,189 → $56,372 (+22.0%)
Median home value	$89,900 → $108,500 (+20.7%)	$116,300 → $146,100 (+25.6%)
Median gross rent	$779 → $661 (-15.1%)	$710 → $824 (+16.1%)

Mendon

Population

8431,131

Median household income

$53,421$62,778

Median home value

$89,900$108,500

Median gross rent

$779$661

Quincy

Population

40,28039,188

Median household income

$46,189$56,372

Median home value

$116,300$146,100

Median gross rent

$710$824

Age & race/ethnicity

Age distribution (share)

	Mendon	Quincy
Under 5	4.1%	5.8%
5 to 17	27.1%	15.8%
18 to 24	5.1%	8.9%
25 to 34	8.8%	13.2%
35 to 44	15.3%	12.6%
45 to 54	14.9%	10.8%
55 to 64	10.7%	12.9%
65 to 74	8.4%	10.3%
75 and over	5.6%	9.6%

Race & ethnicity (share)

	Mendon	Quincy
White (non-Hispanic)	98.0%	86.3%
Black or African American	0.0%	5.2%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	1.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.2%
Two or more races	1.0%	4.9%
Hispanic or Latino	1.1%	2.4%

Educational attainment (age 25+)

Share of adults 25+

	Mendon	Quincy
No high school diploma	7.8%	7.7%
High school graduate	35.4%	34.0%
Some college or associate's	44.5%	31.6%
Bachelor's degree	9.3%	17.4%
Graduate or professional degree	3.1%	9.2%

Commute to work

How workers get to work (share)

	Mendon	Quincy
Drove alone	86.5%	77.8%
Carpooled	6.0%	9.1%
Public transit	0.0%	0.9%
Walked	5.1%	3.3%
Bicycle	0.0%	0.6%
Worked from home	2.4%	7.3%
Other means	0.0%	1.1%

Housing

Units in structure (share)

	Mendon	Quincy
1-unit, detached	78.7%	69.1%
1-unit, attached	1.1%	5.1%
2 to 4 units	8.1%	9.9%
5 to 19 units	0.0%	8.0%
20 or more units	0.0%	5.9%
Mobile home & other	12.1%	2.0%

Poverty & households

	Mendon	Quincy
Poverty rate	13.9%	15.4%
Average household size	2.68	2.16
Mean commute (minutes)	19	14
Median year structure built	1969	1959