Chicago Authority

Chicago is a upper-middle-income large city of 2,711,226 with home prices 1.3× the Illinois median.

Also known as: Chicago Metro Authority

Chicago is a upper-middle-income large city of 2,711,226 with home prices 1.3× the Illinois median.

Chicago is, among other things, the kind of city that makes statistics feel slightly inadequate. A population of 2,711,226 people, according to Census ACS 5-Year 2024 data, spread across a lakefront metropolis in Cook County — and yet the numbers, however precise, keep gesturing at something larger than themselves.

Population and Demographics

Census ACS 5-Year 2024 data places Chicago's total population at 2,711,226, with a median age of 35.8 years. The city skews notably young: 793,417 residents fall in the 18-to-34 age bracket, while 525,626 residents are under 18, representing 19.4 percent of the total population, a figure the Census ACS characterizes as consistent with a family-oriented community.

Racial and ethnic composition, per Census ACS 5-Year 2023, includes 1,057,265 white residents, 769,381 Black residents, 193,169 Asian residents, and 801,852 Hispanic or Latino residents, across 1,146,547 total households, of which 580,000 are family households.

Housing and Affordability

Derived from Census income, housing, and poverty data, Chicago's home-price-to-income ratio stands at 4.3, a figure the source characterizes as placing the city in the "moderate" affordability range. Renters, on average, direct 21.3 percent of income toward housing costs, which the same derivation classifies as "affordable" by standard threshold measures.

These numbers occupy a particular middle ground. A ratio of 4.3 is neither the alarming double-digits of coastal superstar cities nor the comfortable sub-3 figures of smaller Midwestern markets. It is, in a sense, Chicago's characteristic position on many scales: large enough to feel the pressures of density, grounded enough to remain within reach for a meaningful share of its residents.

Age Structure

The median age of 35.8, per Census ACS 5-Year 2024, places Chicago in a demographic band that urban planners sometimes describe as a working-age city — old enough to have accumulated institutional knowledge, young enough to be actively forming households and careers. The 35-to-64 cohort is the largest single age band in the data.

Air Quality

The EPA AQI Annual Summary for 2024 recorded 366 days of air quality data for Chicago. Of those, 131 were classified as "good" days and 224 as "moderate." Ten days fell into the "unhealthy for sensitive groups" category, and one day was recorded as "unhealthy." No very unhealthy or hazardous days were recorded. The maximum AQI reading for the year was 166.

This is, by the standards of major American cities, a reasonably functional air quality profile. The preponderance of moderate days reflects the reality of urban air in a large industrial and transportation hub — not pristine, but not alarming for most residents.

Broadband Infrastructure

According to FCC Broadband Data Collection figures as of June 2025, 100 percent of Chicago's 1,349,521 housing units have access to broadband service meeting the 25/3 Mbps threshold, the 100/20 Mbps threshold, and the 250/25 Mbps threshold. Access at the 1,000/100 Mbps tier reaches 51.9 percent of units. Universal coverage at the lower tiers is notable for a city of this scale; the gap at gigabit speeds reflects infrastructure investment patterns common to dense urban cores where fiber buildout remains uneven across neighborhoods.

Education

NCES IPEDS 2022 data identifies 65 colleges and universities operating in Chicago. Among them, according to the College Scorecard, the University of Illinois Chicago reports an average SAT score of 1,250, an admission rate of 77.35 percent, in-state tuition of $14,338, out-of-state tuition of $29,884, enrollment of 22,170, and a completion rate of 60.97 percent.

The breadth of the higher education sector — 65 institutions across a single city — reflects Chicago's longstanding role as a regional educational hub, drawing students from across Illinois and the broader Midwest.

Childcare

521 licensed childcare centers operate within Chicago, per state facility data. These range from small neighborhood operations to larger center-based programs. The count includes facilities such as 38 Little Angels Daycare Center on North Harlem Avenue and 5 Peas in a Pod Learning Academy, among hundreds of others distributed across the city's 77 community areas.

Religious and Civic Organizations

The IRS Exempt Organizations database identifies 1,963 churches and religious organizations registered in Chicago. The civic infrastructure extends further: 36 civic service organizations appear in the same registry, including Salvation Army operations and YMCA affiliates. The chamber of commerce presence includes the Austin Chamber of Commerce Community Development Corporation, matched via the IRS Exempt Organizations Business Master File.

Arts and Animal Welfare

105 arts organizations are registered in Chicago per IRS Exempt Organizations data, including the Chicago Arts Orchestra and The Factory Theater Company, among others. Nine animal shelter organizations operate in the city, among them Tree House Humane Society, Red Door Animal Shelter, and Chicago Pet Rescue.

Nearby Attractions

Four notable attractions appear in proximity data for Chicago. The Schrage Mansion, a museum, sits 14.9 miles from the city center. The Mascot Hall of Fame, also classified as a museum, is 15.0 miles distant. Pulaski Park Pool appears in the same dataset. These figures reflect the broader regional amenity landscape rather than Chicago's own extensive internal cultural infrastructure, which is separately documented.

Regulatory Context

Chicago operates under a city zoning ordinance, referenced in the Municode corpus as a formally titled and codified document. The corpus excerpt notes that the ordinance "shall be known and may be cited and referred to as the city zoning ordinance," per an ordinance dated February 16, 2010.

At the state level, Illinois statute 225 ILCS 325/46 establishes that the regulation and licensing of professional engineers is an exclusive function of the State of Illinois, and that home rule units, including Chicago, may not regulate or license the occupation of professional engineer. This is a denial and limitation of home rule powers, per the statute's own language, enacted under P.A. 98-756. A parallel provision under 225 ILCS 320/37 governs plumbing: governmental units authorized to adopt plumbing ordinances may administer them through permit requirements, licensed inspector oversight, and certificates of compliance — with the requirement that a letter of intent, signed by the licensed plumber of record, accompany all permit applications.

These statutory provisions illustrate a recurring feature of Illinois municipal governance: the city holds broad home rule authority in many domains, while the state legislature has carved out specific licensed professions as exclusively state-regulated territory.

Climate

The nearest NOAA ACIS weather station, Chicago Northerly Island, located 3.6 miles from the city center, records an average temperature of 51.2 degrees Fahrenheit. Annual precipitation data from the same station is noted in the source record.

Further Reading

• Census Bureau, American Community Survey 5-Year Estimates — https://data.census.gov
• NCES, Common Core of Data — https://nces.ed.gov/ccd/
• City of Chicago, Municipal Code (via Municode) — https://library.municode.com/il/south_chicago_heights