Erie vs Rock Falls

A side-by-side comparison of Erie and Rock Falls: population, income, housing, and more.

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

Rock Falls has the higher population (8,683 vs 1,658 in Erie). Erie has the higher median household income ($86,750 vs $48,733 in Rock Falls). Erie has the higher median home value ($147,300 vs $82,400 in Rock Falls).

Population, income & housing

	Erie	Rock Falls
Population	1,658	8,683
Median age	42.3 yrs	39.9 yrs
Median household income	$86,750	$48,733
Median home value	$147,300	$82,400
Median gross rent	$740	$745
Housing units	785	4,471
Homeownership rate	71.6%	65.6%
Bachelor's degree or higher	17.4%	15.0%
Unemployment rate	4.3%	5.5%

Trends (ACS 5-year, 2019–2023)

	Erie	Rock Falls
Population	1,496 → 1,658 (+10.8%)	8,952 → 8,683 (-3.0%)
Median household income	$71,875 → $86,750 (+20.7%)	$49,191 → $48,733 (-0.9%)
Median home value	$130,000 → $147,300 (+13.3%)	$78,000 → $82,400 (+5.6%)
Median gross rent	$605 → $740 (+22.3%)	$695 → $745 (+7.2%)

Erie

Population

1,4961,658

Median household income

$71,875$86,750

Median home value

$130,000$147,300

Median gross rent

$605$740

Rock Falls

Population

8,9528,683

Median household income

$49,191$48,733

Median home value

$78,000$82,400

Median gross rent

$695$745

Age & race/ethnicity

Age distribution (share)

	Erie	Rock Falls
Under 5	5.6%	6.8%
5 to 17	24.8%	15.9%
18 to 24	5.2%	8.3%
25 to 34	7.5%	12.2%
35 to 44	14.6%	11.5%
45 to 54	10.7%	13.1%
55 to 64	13.9%	12.7%
65 to 74	8.3%	11.3%
75 and over	9.3%	8.2%

Race & ethnicity (share)

	Erie	Rock Falls
White (non-Hispanic)	93.4%	74.9%
Black or African American	0.2%	0.4%
American Indian & Alaska Native	0.4%	0.3%
Asian	0.2%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.8%	0.0%
Two or more races	4.1%	2.4%
Hispanic or Latino	1.0%	22.0%

Educational attainment (age 25+)

Share of adults 25+

	Erie	Rock Falls
No high school diploma	5.4%	12.8%
High school graduate	34.0%	34.5%
Some college or associate's	43.2%	37.7%
Bachelor's degree	9.8%	10.8%
Graduate or professional degree	7.7%	4.2%

Commute to work

How workers get to work (share)

	Erie	Rock Falls
Drove alone	92.0%	84.4%
Carpooled	4.6%	9.3%
Public transit	0.0%	0.6%
Walked	0.4%	0.5%
Bicycle	0.0%	0.0%
Worked from home	2.5%	5.2%
Other means	0.5%	0.0%

Housing

Units in structure (share)

	Erie	Rock Falls
1-unit, detached	86.5%	75.3%
1-unit, attached	0.6%	1.5%
2 to 4 units	10.8%	11.4%
5 to 19 units	1.5%	5.9%
20 or more units	0.0%	4.5%
Mobile home & other	0.5%	1.4%

Poverty & households

	Erie	Rock Falls
Poverty rate	6.0%	22.7%
Average household size	2.21	2.19
Mean commute (minutes)	19	16
Median year structure built	1967	1959