German Valley vs Rock City

A side-by-side comparison of German Valley and Rock City: population, income, housing, and more.

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

German Valley has the higher population (455 vs 378 in Rock City). German Valley has the higher median household income ($71,420 vs $70,000 in Rock City). Rock City has the higher median home value ($124,000 vs $118,300 in German Valley).

Population, income & housing

	German Valley	Rock City
Population	455	378
Median age	34.4 yrs	32.2 yrs
Median household income	$71,420	$70,000
Median home value	$118,300	$124,000
Median gross rent	$775	$845
Housing units	205	134
Homeownership rate	74.3%	79.2%
Bachelor's degree or higher	30.1%	12.9%
Unemployment rate	1.7%	3.7%

Trends (ACS 5-year, 2019–2023)

	German Valley	Rock City
Population	553 → 455 (-17.7%)	323 → 378 (+17.0%)
Median household income	$57,500 → $71,420 (+24.2%)	$55,000 → $70,000 (+27.3%)
Median home value	$89,100 → $118,300 (+32.8%)	$99,100 → $124,000 (+25.1%)
Median gross rent	$654 → $775 (+18.5%)	$725 → $845 (+16.6%)

German Valley

Population

553455

Median household income

$57,500$71,420

Median home value

$89,100$118,300

Median gross rent

$654$775

Rock City

Population

323378

Median household income

$55,000$70,000

Median home value

$99,100$124,000

Median gross rent

$725$845

Age & race/ethnicity

Age distribution (share)

	German Valley	Rock City
Under 5	10.8%	3.4%
5 to 17	19.3%	29.9%
18 to 24	6.4%	11.4%
25 to 34	14.1%	6.9%
35 to 44	13.4%	12.2%
45 to 54	11.2%	11.6%
55 to 64	9.9%	11.1%
65 to 74	8.6%	8.5%
75 and over	6.4%	5.0%

Race & ethnicity (share)

	German Valley	Rock City
White (non-Hispanic)	97.8%	74.9%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.7%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.4%	0.0%
Two or more races	0.7%	2.4%
Hispanic or Latino	0.4%	22.8%

Educational attainment (age 25+)

Share of adults 25+

	German Valley	Rock City
No high school diploma	5.9%	6.2%
High school graduate	33.6%	39.7%
Some college or associate's	30.4%	41.1%
Bachelor's degree	12.1%	8.1%
Graduate or professional degree	18.0%	4.8%

Commute to work

How workers get to work (share)

	German Valley	Rock City
Drove alone	90.4%	78.5%
Carpooled	1.3%	12.7%
Public transit	0.0%	0.0%
Walked	1.8%	2.2%
Bicycle	0.0%	0.0%
Worked from home	6.6%	6.1%
Other means	0.0%	0.6%

Housing

Units in structure (share)

	German Valley	Rock City
1-unit, detached	84.9%	82.8%
1-unit, attached	1.5%	0.0%
2 to 4 units	3.9%	6.7%
5 to 19 units	8.3%	7.5%
20 or more units	1.5%	0.0%
Mobile home & other	0.0%	3.0%

Poverty & households

	German Valley	Rock City
Poverty rate	6.8%	4.5%
Average household size	2.49	2.91
Mean commute (minutes)	29	30
Median year structure built	1970	1957