Population
15,681 residents
Census ACS 2023 - Illinois
City profile · Illinois · Census ACS 2023
Population, income, housing, safety, climate and schools for Prospect Heights - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
Prospect Heights - the verdict
Nationally, Prospect Heights sits in the 72nd percentile for household income and the 74th percentile for safety among US cities with a population of 1,000 or more. Source: Census ACS + FBI UCR.
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.
Census ACS 2023 estimates count 15,681 residents in Prospect Heights, a small town within Illinois. Median household income here is $91,599 per year, above the median for U.S. cities on this measure, with a poverty rate of 2.9%. Home values in Prospect Heights run a median of $347,500, and the median resident age is 41.0 years. About 36.3% of adults hold a bachelor's degree or higher, while 69.3% of working-age residents are in the labor force.
In 2024, 3 residential building permits were authorized in Prospect Heights (Slowing), down 25% from five years earlier, per Census BPS data. Prospect Heights reports a comparatively low crime rate: FBI UCR figures show 747.2 crimes per 100,000 residents, below the national average (reporting is voluntary across agencies, so treat this as reporting activity rather than a definitive danger score).
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. A typical two-bedroom carries a HUD Fair Market Rent of $1,781 per month statewide. EIA 2023 residential energy data puts Illinois's average monthly utility costs around $240 (state average). Natural-hazard exposure scores 96.0 out of 100 on FEMA's National Risk Index (Very High).
Population
15,681 residents
Census ACS 2023 - Illinois
Median Household Income
$91,599 /yr
Poverty 2.9%
Cost of Living Index (state)
100.0 (US=100)
Near Average - BEA RPP 2024, Illinois average
Here's how Prospect Heights stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
Zoom in to just Illinois and the picture shifts: Prospect Heights ranks #183 of 455 Illinois cities by lowest crime rate, a different read than the national percentile above.
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 Prospect Heights'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.
72nd percentile nationally for median household income · 74th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Income, affordability, and safety percentile
How Prospect Heights's home value compares nationally
Median home value vs. every US city (population 1,000+)
$347,500 28th percentile more affordable than 28% of 15,600 US cities
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
Census ACS S1501, educational attainment
Census ACS S1701, poverty status
Census ACS S2301, share of working-age residents in the labor force
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
| Year | Total |
|---|---|
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 3 |
Permit volume decreased 25% from 2019 to 2024.
How workers travel to work, Census ACS 2023
Based on 8,764 workers 16 and over.
State-average estimates for Illinois - EIA 2023 residential energy data
Estimates reflect Illinois state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
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 Prospect Heights sits in
Population-matched peers from other states, closest to Prospect Heights's 15,681 residents (Census ACS 5-Year 2023).
Median-household-income-matched peers from other states, closest to Prospect Heights's $91,599 (Census ACS 5-Year 2023, table B19013).
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| Prospect Heights (this city) | 15,681 | $91,599 |
| Washington | 15,946 | $91,360 |
| La Grange | 15,999 | $154,556 |
| Bradley | 15,331 | $62,940 |
Prospect Heights, IL has a population of 15,681 according to U.S. Census Bureau ACS 2023 estimates.
The median household income in Prospect Heights is $91,599 per year, based on Census ACS 2023 data.
BEA does not publish a city-level cost-of-living figure for Prospect Heights; 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.
Prospect Heights has a total crime rate of 747.2 per 100,000 residents, which is below the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.
Homes in Prospect Heights carry a median value of $347,500, according to Census ACS 2023 estimates.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, 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.
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.