City profile · Illinois · Census ACS 2023

Rock City, IL

Population, income, housing, safety, climate and schools for Rock City - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

378
Residents
$70,000
Median income
$124,000
Median home
$916
Median rent (state)

Rock City - the verdict

Rock City ranks in the 49th percentile for household income nationally, out of every US city with at least 1,000 residents. Source: Census ACS.

49th
percentile, household income
19th
percentile, home value
5th
percentile, median rent
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: Rock City, IL

378 people live in Rock City, Illinois - a small town by U.S. Census Bureau ACS 2023 estimates. Median household income here is $70,000 per year, below the median for U.S. cities on this measure, with a poverty rate of 2.1%. Home values in Rock City run a median of $124,000, and the median resident age is 32.2 years. 12.9% of adults here have a bachelor's degree or higher; 70.8% of working-age residents are in the labor force.

The Census Building Permit Survey recorded 0 residential units authorized here in 2024 (No Permits).

Illinois tracks close to the national cost-of-living baseline: on BEA's 100-equals-national-average cost index, Illinois scores 100.0 (Near Average), per the 2024 Regional Price Parities release. Statewide, HUD pegs Fair Market Rent for a two-bedroom unit at $916 monthly. EIA 2023 residential energy data puts Illinois's average monthly utility costs around $240 (state average). Natural-hazard exposure scores 73.9 out of 100 on FEMA's National Risk Index (High).

Population

378 residents

Census ACS 2023 - Illinois

Median Household Income

$70,000 /yr

Poverty 2.1%

Cost of Living Index (state)

100.0 (US=100)

Near Average - BEA RPP 2024, Illinois average

How does Rock City compare to other US cities?

Rock City measured against every US city with 1,000+ residents, computed live from the same Census and FBI data shown throughout this page.

Household income 49% higher than other cities
Home value 19% pricier than other cities
Median rent 5% pricier than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

How we calculate these percentiles & ranks

For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below Rock City's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in Illinois, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.

49thIncome percentile

49th percentile nationally for median household income. Source: Census ACS 2023 / FBI UCR 2023.

How Rock City's home value compares nationally

Median home value vs. every US city (population 1,000+)

$124,000 Among the most affordable more affordable than 81% of 15,600 US cities

$0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). This entry sits in this band. $125,000–$150,000: 1,170 US cities (8%). Above this entry. $150,000–$175,000: 1,278 US cities (8%). Above this entry. $175,000–$200,000: 1,229 US cities (8%). Above this entry. $200,000–$225,000: 1,035 US cities (7%). Above this entry. $225,000–$250,000: 976 US cities (6%). Above this entry. $250,000–$275,000: 754 US cities (5%). Above this entry. $275,000–$300,000: 712 US cities (5%). Above this entry. $300,000–$325,000: 521 US cities (3%). Above this entry. $325,000–$350,000: 526 US cities (3%). Above this entry. $350,000–$375,000: 465 US cities (3%). Above this entry. $375,000–$400,000: 393 US cities (3%). Above this entry. $400,000–$425,000: 317 US cities (2%). Above this entry. $425,000–$450,000: 300 US cities (2%). Above this entry. $450,000–$475,000: 307 US cities (2%). Above this entry. $475,000–$500,000: 250 US cities (2%). Above this entry. $500,000–$525,000: 160 US cities (1%). Above this entry. $525,000–$550,000: 156 US cities (1%). Above this entry. $550,000–$575,000: 172 US cities (1%). Above this entry. $575,000–$600,000: 172 US cities (1%). Above this entry. $600,000–$625,000: 163 US cities (1%). Above this entry. $625,000–$650,000: 167 US cities (1%). Above this entry. $650,000–$675,000: 135 US cities (1%). Above this entry. $675,000–$700,000: 101 US cities (1%). Above this entry. $700,000–$725,000: 95 US cities (1%). Above this entry. $725,000–$750,000: 71 US cities (0%). Above this entry. $750,000–$775,000: 65 US cities (0%). Above this entry. $775,000–$800,000: 70 US cities (0%). Above this entry. $800,000–$825,000: 57 US cities (0%). Above this entry. $825,000–$850,000: 67 US cities (0%). Above this entry. $850,000–$875,000: 60 US cities (0%). Above this entry. $875,000–$900,000: 58 US cities (0%). Above this entry. $900,000–$925,000: 47 US cities (0%). Above this entry. $925,000–$950,000: 37 US cities (0%). Above this entry. $950,000–$975,000: 31 US cities (0%). Above this entry. $975,000–$1,000,000: 470 US cities (3%). Above this entry. $1,000,000–$1,025,000: 0 US cities (0%). Above this entry. Rock City $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Income distribution context

Household income distribution - Rock City, IL Rock City, IL's reported median household income shown against the U.S. national quintile-share pattern (not Rock City, IL-specific quintile data). The Lorenz curve traces the national cumulative income share against cumulative population share, perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution Rock City, IL median $70,000/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Rock City, IL's median household income (Census ACS 5-year estimate) plotted against the U.S. national income-quintile distribution pattern for context; the quintile shares and Lorenz curve are national figures, not computed specifically for Rock City, IL. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 12.9%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 2.1%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 70.8%

Census ACS S2301, share of working-age residents in the labor force

Population
378
Median Income
$70,000
Median Home Value
$124,000
Median Age
32.2
Poverty Rate
2.1%
Labor force participation
70.8%
Bachelor's Degree+
12.9%

Population Change

Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025

See the fastest-growing cities →
280 residents285 residents290 residents295 residents300 residents 202020212022202320242025 295 residents 285 residents ▼ -3.4%
Rock City's Census PEP population estimates, 2020–2025.

Housing Supply

Census Bureau Building Permits Survey (BPS) - annual residential permits authorized

Total Permits (2024)
0
housing units authorized
Single-Family
0
detached homes
Multifamily
0
apartments & condos

5-Year Permit Trend (2019–2024)

Year Total
2019 0
2020 0
2021 0
2022 0
2023 0
2024 0

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
78.5%
Carpool
12.7%
Public Transit
0.0%
Walk
2.2%
Work from Home
6.1%

Based on 181 workers 16 and over.

Monthly Utility Costs

State-average estimates for Illinois - EIA 2023 residential energy data

Electricity
$100
avg/month
Natural Gas
$90
avg/month
Water & Sewer
$50
avg/month
Total Utilities
$240
estimated/month

Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Cost of living is a Illinois state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Rock City sits in

Cost of Living Index
100.0
Near Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$916/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
73.9 / 100
High
FEMA NRI composite score (county)

Similar Cities in Illinois

Pierron
378 people
Dunfermline
379 people
Joy
377 people
Alto Pass
380 people
Belle Rive
380 people
Melvin
376 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to Rock City's 378 residents (Census ACS 5-Year 2023).

Goshen, AL
378 people
Edna, CA
378 people
Ovid, CO
378 people
Mondamin, IA
378 people
Creekside, KY
378 people
Eagle Lake, ME
378 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to Rock City's $70,000 (Census ACS 5-Year 2023, table B19013).

Steele, AL
$70,000 median income
Kasigluk, AK
$70,000 median income
Crawfordsville, AR
$70,000 median income
Norman, AR
$70,000 median income
Bethlehem, GA
$70,000 median income
Kaneohe Base, HI
$70,000 median income

Race & Ethnicity Composition

Race and ethnicity - Rock City, IL Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition Rock City, IL - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 74.9% 8.7% 16.4% ETHNICITY, Hispanic or Latino (any race) 22.8% White 74.9% Black or African American 0.0% Asian 0.0% American Indian 0.0% Native Hawaiian 0.0% Some other race 8.7% Two or more races 16.4% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.

How Rock City compares to nearby Illinois cities

Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).

City Population Median Household Income
Rock City (this city) 378 $70,000
Pierron 378 $62,750
Dunfermline 379 $69,000
Joy 377 $64,583
Census ACS 5-year FIPS IL Census BPS 2024 OMB Bulletin 23-01

What do people ask about Rock City, IL?

What is the population of Rock City, IL? +

The population of Rock City, IL stands at 378 according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Rock City, IL? +

Median annual household income in Rock City runs $70,000, based on Census ACS 2023 data.

What is the cost of living in Rock City? +

BEA does not publish a city-level cost-of-living figure for Rock City; the closest available measure is the Illinois state average, a cost of living index of 100.0 (U.S. average = 100), rated "Near Average" based on BEA Regional Price Parities 2024 data. Costs within Illinois vary by metro area.

What is the median home value in Rock City, IL? +

Rock City's median home value sits at $124,000, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities Editorial

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Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.