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CITY

Big Rock

Illinois · 1,090 residents (2025 est.) · 4.318 sq mi
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The short version

Big Rock is significantly wealthier than the US average, with a median household income of $162,854. Population has grown 28% since 2023. 21% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value is $337,900. With a median age of 49.4, the population is older than the US median of 38.9. It ranks in the top 1% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 49.4
US median: 38.9
Less educated
21% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
1,548
+28%since 2023
from 1,208 in 2023
2009 – 2025
Population density
358 / sq mi
+28%since 2023
from 280 / sq mi in 2023
US average: 281
Median age
49.4
+22%since 2023
from 40.6 in 2023
US average: 38.9

PEP 2025 EST:1,090 residents (Census Bureau Vintage 2025, released March 2026)

Population, 2009 – 2024
9871K1K1K2K200920202024Big Rock
20242K
200920202024
Section 02

Income & economy

Median household income
$162,854
+25%inflation adjusted, since 2023
from $126,667 in 2023
US average: $82,259
2009 – 2024
Per capita income
$57,601
+16%since 2023
from $49,473 in 2023
US average: $44,673
Households earning $100K+
84.5%
+5.6 ptssince 2023
from 78.9% in 2023
US average: 53.3%
Poverty rate
3.2%
−1.3 ptssince 2023
from 4.6% in 2023
US average: 12.5%
Income inequality (Gini)
0.242
−33%since 2023
from 0.363 in 2023
US average: 0.476
Workforce by industry, 2024
Wholesale trade51.4%
US avg: 6.9%
Information8%
US avg: 10.8%
Retail trade5.9%
US avg: 9.9%
Finance & insurance3.6%
US avg: 5.9%
Other services2.7%
US avg: 6.7%
Transportation & warehousing1.9%
US avg: 2.2%
Professional, scientific, technical1.8%
US avg: 5.1%
Education & health services1.7%
US avg: 0.9%
Public administration1.2%
US avg: 4.8%
Agriculture, forestry, fishing0.8%
US avg: 1.6%
Construction0.8%
US avg: 1.2%
Arts, entertainment, food0.7%
US avg: 1.9%
Manufacturing0%
US avg: 0.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$337,900
+13%inflation adjusted, since 2023
from $290,100 in 2023
US average: $376,019
2009 – 2024
Owner-occupied
98.9%
+2.9 ptssince 2023
from 96.0% in 2023
1.1% rent
Vacancy rate
2.4%
−2.2 ptssince 2023
from 4.5% in 2023
US average: 10.0%
Owner cost-burdened
13.9%
−8.1 ptssince 2023
from 22.0% in 2023
US average: 22.9%
Renter cost-burdened
0.0%
−23.5 ptssince 2023
from 23.5% in 2023
US average: 47.4%
Afford Score
2.1
−9%since 2023
from 2.3 in 2023
2009 – 2024
Gentrification Score
43
RELATED:See current rent listings in Big Rock on RentDataNow
Section 04

Race & ethnicity

2023
White, non-Hispanic84.8%(1,024)
Black0.3%(4)
Hispanic / Latino9.4%(113)
Asian1.2%(15)
Other4.3%(52)
Diversity Score33.8%(409)
2024
White, non-Hispanic70.8%(1,096)
Black0.2%(3)
Hispanic / Latino9.8%(152)
Asian0.8%(12)
Other18.4%(285)
Diversity Score56.9%(881)
Diversity Score
57
+68%since 2023
from 34 in 2023
2009 – 2024
Section 05

Education

Bachelor's degree or higher
20.6%
−14.7 ptssince 2023
from 35.3% in 2023
US average: 35.6%
High school or higher
97.4%
+0.7 ptssince 2023
from 96.8% in 2023
US average: 89.6%
Graduate degree
5.9%
−5.4 ptssince 2023
from 11.2% in 2023
US average: 14.0%
Section 06

Commute & transportation

Average commute
18.4 min
−39%since 2023
from 30.1 min in 2023
US average: 26.5
Drive alone to work
61.3%
−6.6 ptssince 2023
from 67.9% in 2023
US average: 68.9%
Carpooled to work
1.8%
−2.2 ptssince 2023
from 4.0% in 2023
US average: 8.5%
Public transit
0.6%
−1.2 ptssince 2023
from 1.8% in 2023
US average: 3.2%
Worked from home
35.4%
+9.1 ptssince 2023
from 26.3% in 2023
US average: 15.0%
Walked to work
0.3%
+0.3 ptssince 2023
from 0.0% in 2023
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2023
from 0.0% in 2023
US average: 0.4%
No vehicle available
1.0%
−0.5 ptssince 2023
from 1.4% in 2023
US average: 8.3%
Section 07

Work & employment

Unemployment rate
2.2%
−1.5 ptssince 2023
from 3.6% in 2023
US average: 5.2%
Labor force participation
79.0%
+10.9 ptssince 2023
from 68.1% in 2023
US average: 63.5%
Self-employed
8.7%
−8.0 ptssince 2023
from 16.7% in 2023
US average: 13.1%
Management & professional
21.1%
−21.0 ptssince 2023
from 42.2% in 2023
US average: 42.5%
Section 08

People & community

Male
47.9%
−1.9 ptssince 2023
from 49.8% in 2023
Female
52.1%
+1.9 ptssince 2023
from 50.2% in 2023
Foreign born
3.5%
Unchangedsince 2023
from 3.5% in 2023
US average: 14.1%
Veterans
2.7%
−1.4 ptssince 2023
from 4.1% in 2023
US average: 6.2%
With a disability
5.7%
−4.0 ptssince 2023
from 9.7% in 2023
US average: 13.3%
Uninsured
1.4%
−0.6 ptssince 2023
from 2.0% in 2023
US average: 8.4%
Broadband at home
97.4%
+2.4 ptssince 2023
from 95.0% in 2023
US average: 91.0%
English only at home
91.5%
−1.4 ptssince 2023
from 92.9% in 2023
US average: 77.7%
Spanish at home
7.1%
+1.7 ptssince 2023
from 5.4% in 2023
US average: 13.6%
Drill deeper

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Frequently asked

How many people live in Big Rock, Illinois?

Big Rock, Illinois has about 1,548 residents according to the 2024 American Community Survey.

What is the median household income in Big Rock, Illinois?

The typical household in Big Rock, Illinois earns about $162,854 a year. Half of households make more than that, and half make less.

Is Big Rock, Illinois expensive?

In Big Rock, Illinois, the median home is worth about $337,900.

How educated are people in Big Rock, Illinois?

About 20.6% of adults age 25 and over in Big Rock, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Big Rock, Illinois?

About 3.2% of people in Big Rock, Illinois live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →