City profile · Illinois · Census ACS 2023

Frankfort, IL

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

20,417
Residents
$153,714
Median income
$461,600
Median home
$1,781
Median rent (state)

Frankfort - the verdict

Measured against every US city with at least 1,000 residents, Frankfort lands in the 95th percentile for household income and the 77th percentile for safety. Source: Census ACS + FBI UCR.

95th
percentile, household income
82nd
percentile, home value
72nd
percentile, median rent
77th
percentile, safety
📝 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: Frankfort, IL

Illinois's Frankfort is a small city, with 20,417 residents per the latest Census Bureau ACS figures. Frankfort households earn a median of $153,714 annually, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 2.6%. Typical homes in Frankfort are valued around $461,600, and the median resident age is 41.8 years. 59.2% of adults here have a bachelor's degree or higher; 64.3% of working-age residents are in the labor force.

The Census Building Permit Survey recorded 103 residential units authorized here in 2024 (Rapid Growth), up 21% from five years earlier. Frankfort reports a comparatively low crime rate: FBI UCR figures show 701.2 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: BEA Regional Price Parities 2024 puts Illinois at 100.0 on a 100-equals-national-average scale (Near Average). HUD Fair Market Rent for a typical two-bedroom in this state is $1,781 per month. Monthly utility costs average around $240 across Illinois, per EIA 2023 residential energy estimates. FEMA's National Risk Index rates natural-hazard exposure at 97.3 out of 100 (Very High).

Population

20,417 residents

Census ACS 2023 - Illinois

Median Household Income

$153,714 /yr

Poverty 2.6%

Cost of Living Index (state)

100.0 (US=100)

Near Average - BEA RPP 2024, Illinois average

How does Frankfort compare to other US cities?

Where Frankfort sits among all US cities (population 1,000+) on each measure, computed live from Census and FBI data.

Household income 95% higher than other cities
Home value 82% pricier than other cities
Median rent 72% pricier than other cities
Safety 77% safer than other cities

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

Zoom in to just Illinois and the picture shifts: Frankfort ranks #163 of 455 Illinois cities by lowest crime rate, a different read than the national percentile above.

How we calculate these percentiles & ranks

Each percentile compares Frankfort against every qualifying US city; each in-state rank narrows that to Illinois only. Full formula and direction notes: methodology.

Illinois-relative analysis

Median Home Value is Frankfort's strongest outlier among Illinois cities

Among the 1,315 Illinois cities PlainCities tracks with reported median home value data, Frankfort ranks #48 - the 96th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Frankfort only against its own state's cities, not the full US field.

Median Household Income
#43 of 1,311
97th percentile in Illinois
Median Gross Rent
#17 of 1,336
77th percentile in Illinois
Median Home Value
#48 of 1,315
96th percentile in Illinois
Poverty Rate
#1,066 of 1,335
20th percentile in Illinois
Bachelor's Degree or Higher
#68 of 1,336
95th percentile in Illinois

Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within Illinois only, not a livability score. See the methodology for the source and calculation.

95thIncome percentile
77thSafety percentile

95th percentile nationally for median household income · 77th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.

Frankfort's profile vs. every US city

Income, affordability, and safety percentile

Frankfort's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown. 3-axis radar comparing 1 series across Income, Affordability, Safety. IncomeAffordabilitySafety 65 Avg. percentile National median
Frankfort's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown.

How Frankfort's home value compares nationally

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

$461,600 18th percentile more affordable than 18% 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%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). Below this entry. $150,000–$175,000: 1,278 US cities (8%). Below this entry. $175,000–$200,000: 1,229 US cities (8%). Below this entry. $200,000–$225,000: 1,035 US cities (7%). Below this entry. $225,000–$250,000: 976 US cities (6%). Below this entry. $250,000–$275,000: 754 US cities (5%). Below this entry. $275,000–$300,000: 712 US cities (5%). Below this entry. $300,000–$325,000: 521 US cities (3%). Below this entry. $325,000–$350,000: 526 US cities (3%). Below this entry. $350,000–$375,000: 465 US cities (3%). Below this entry. $375,000–$400,000: 393 US cities (3%). Below this entry. $400,000–$425,000: 317 US cities (2%). Below this entry. $425,000–$450,000: 300 US cities (2%). Below this entry. $450,000–$475,000: 307 US cities (2%). This entry sits in this band. $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. Frankfort $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 - Frankfort, IL Frankfort, IL's reported median household income shown against the U.S. national quintile-share pattern (not Frankfort, 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 Frankfort, IL median $153,714/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%
Frankfort, 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 Frankfort, IL. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 59.2%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 2.6%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 64.3%

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

Population
20,417
Median Income
$153,714
Median Home Value
$461,600
Median Age
41.8
Poverty Rate
2.6%
Labor force participation
64.3%
Bachelor's Degree+
59.2%

Safety & Crime

Total Crime Rate
701.2
per 100,000 residents
Violent Crime
33.2
per 100,000 residents
Property Crime
668.0
per 100,000 residents

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.

Schools

Total Schools
9
Public schools in this city

Population Change

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

See the fastest-growing cities →
20,000 residents20,500 residents21,000 residents21,500 residents 202020212022202320242025 20,314 residents 21,365 residents ▲ +5.2%
Frankfort's Census PEP population estimates, 2020–2025.

Housing Supply

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

📈 Rapid Growth
Total Permits (2024)
103
housing units authorized
Single-Family
103
detached homes
Multifamily
0
apartments & condos
Supply Intensity
5
permits per 1,000 residents

5-Year Permit Trend (2019–2024)

Year Total
2019 85
2020 99
2021 132
2022 99
2023 52
2024 103

Permit volume increased 21% from 2019 to 2024.

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
71.8%
Carpool
3.3%
Public Transit
4.3%
Walk
0.3%
Work from Home
19.4%
Other
0.9%

Based on 9,533 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 Frankfort sits in

Cost of Living Index
100.0
Near Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$1,781/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
97.3 / 100
Very High
FEMA NRI composite score (county)

Similar Cities in Illinois

Libertyville
20,493 people
Grayslake
20,707 people
East Moline
20,837 people
Park Forest
20,898 people
Mokena
19,906 people
Dolton
20,979 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to Frankfort's 20,417 residents (Census ACS 5-Year 2023).

Lomita, CA
20,409 people
Culpeper, VA
20,437 people
Buckhall, VA
20,447 people
Meadowbrook, VA
20,383 people
Painesville, OH
20,453 people
Sidney, OH
20,457 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to Frankfort's $153,714 (Census ACS 5-Year 2023, table B19013).

Whippany, NJ
$153,725 median income
Richboro, PA
$153,691 median income
Brown Station, MD
$153,750 median income
Issaquah, WA
$153,786 median income
Daufuskie Island, SC
$153,821 median income
Livermore, CA
$153,602 median income

Race & Ethnicity Composition

Race and ethnicity - Frankfort, 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 Frankfort, IL - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 79.3% 10.9% 6.2% ETHNICITY, Hispanic or Latino (any race) 5.5% White 79.3% Black or African American 10.9% Asian 2.6% American Indian 0.1% Native Hawaiian 0.0% Some other race 0.8% Two or more races 6.2% 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 Frankfort 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
Frankfort (this city) 20,417 $153,714
Libertyville 20,493 $162,270
Grayslake 20,707 $113,697
East Moline 20,837 $63,328
Census ACS 5-year FIPS IL FBI UCR NCES CCD Census BPS 2024 OMB Bulletin 23-01

What do people ask about Frankfort, IL?

What is the population of Frankfort, IL? +

20,417 people live in Frankfort, IL according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Frankfort, IL? +

The median household income in Frankfort is $153,714 per year, based on Census ACS 2023 data.

What is the cost of living in Frankfort? +

BEA does not publish a city-level cost-of-living figure for Frankfort; 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.

Is Frankfort, IL safe? +

Frankfort has a total crime rate of 701.2 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.

What is the median home value in Frankfort, IL? +

Frankfort's median home value sits at $461,600, 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.

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

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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.