Big Rock vs Lily Lake

A side-by-side comparison of Big Rock and Lily Lake: population, income, housing, and more.

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

Lily Lake has the higher population (1,432 vs 1,208 in Big Rock). Lily Lake has the higher median household income ($145,192 vs $126,667 in Big Rock). Lily Lake has the higher median home value ($379,300 vs $290,100 in Big Rock).

Population, income & housing

	Big Rock	Lily Lake
Population	1,208	1,432
Median age	40.6 yrs	44.2 yrs
Median household income	$126,667	$145,192
Median home value	$290,100	$379,300
Median gross rent	—	$1,438
Housing units	442	454
Homeownership rate	96.0%	98.5%
Bachelor's degree or higher	35.3%	38.5%
Unemployment rate	3.6%	8.2%

Trends (ACS 5-year, 2019–2023)

	Big Rock	Lily Lake
Population	1,236 → 1,208 (-2.3%)	1,022 → 1,432 (+40.1%)
Median household income	$96,369 → $126,667 (+31.4%)	$132,273 → $145,192 (+9.8%)
Median home value	$237,400 → $290,100 (+22.2%)	$360,200 → $379,300 (+5.3%)
Median gross rent	$1,100 → $1,408 (+28.0%)	$1,750 → $1,438 (-17.8%)

Big Rock

Population

1,2361,208

Median household income

$96,369$126,667

Median home value

$237,400$290,100

Median gross rent

$1,100$1,408

Lily Lake

Population

1,0221,432

Median household income

$132,273$145,192

Median home value

$360,200$379,300

Median gross rent

$1,750$1,438

Age & race/ethnicity

Age distribution (share)

	Big Rock	Lily Lake
Under 5	7.9%	3.1%
5 to 17	19.9%	16.3%
18 to 24	6.0%	16.3%
25 to 34	12.2%	5.4%
35 to 44	7.6%	10.1%
45 to 54	13.4%	13.8%
55 to 64	17.4%	15.9%
65 to 74	6.8%	14.6%
75 and over	8.9%	4.6%

Race & ethnicity (share)

	Big Rock	Lily Lake
White (non-Hispanic)	84.8%	92.5%
Black or African American	0.3%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	1.2%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.1%
Some other race	0.0%	0.0%
Two or more races	4.3%	3.0%
Hispanic or Latino	9.4%	4.3%

Educational attainment (age 25+)

Share of adults 25+

	Big Rock	Lily Lake
No high school diploma	3.2%	0.4%
High school graduate	33.3%	20.2%
Some college or associate's	28.1%	40.9%
Bachelor's degree	24.1%	25.9%
Graduate or professional degree	11.2%	12.6%

Commute to work

How workers get to work (share)

	Big Rock	Lily Lake
Drove alone	67.9%	75.2%
Carpooled	4.0%	3.4%
Public transit	1.8%	0.4%
Walked	0.0%	1.3%
Bicycle	0.0%	0.0%
Worked from home	26.3%	19.2%
Other means	0.0%	0.5%

Housing

Units in structure (share)

	Big Rock	Lily Lake
1-unit, detached	97.1%	95.2%
1-unit, attached	0.0%	3.3%
2 to 4 units	2.9%	1.5%
5 to 19 units	0.0%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	0.0%	0.0%

Poverty & households

	Big Rock	Lily Lake
Poverty rate	4.6%	0.6%
Average household size	2.86	3.15
Mean commute (minutes)	30	32
Median year structure built	1972	1991