Darien (formerly Cass) is a city in DuPage County, Illinois, United States. Per the 2020 census, the population was 22,011. A southwestern suburb of Chicago, Darien was named after the town of Darien, Connecticut. Darien is just north of I-55 and Historic U.S. Route 66 (now Frontage Road). The entire south edge of the town borders Waterfall Glen.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Darien ranks

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#8Lowest depression in IL #59Most trails in IL #76Lowest obesity in IL All IL rankings →

Town numbers

ZIP code60561

Area codeSign in to add

Living in Darien

Housing in Darien

$460K▲ 4.4% in a year Typical home value · Zillow

The typical Darien home is worth about $460,000, up 4.4% in a year, 54% above the Illinois typical home.

A strong seller's market

Buyer’sBalancedSeller’s

Days on market37

Sale-to-list102.1%

Sold in May29

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Darien

A⁻

Safety Grade A-

Darien reports less crime per resident than 77% of the U.S. towns and cities we grade.

Violent crime per 1,000

Darien 0.1

Illinois 2.6

U.S. 3.3

Property crime per 1,000

Darien 7.1

Illinois 15.6

U.S. 15.5

FBI crime data, 2025 · crimes reported to policeCrime & safety →

Work & commute in Darien

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Most working residents leave Darien for work: only 4% work in town. The top destinations are Chicago (23%), Downers Grove (4%) and Naperville (4%). Half commute less than 13 miles.

Chicago

23%

Downers Grove

Naperville

Oak Brook

4%Work in townlive and work in Darien 13 miWhere do people commute?the commute map 5,799Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Darien →

Health in Darien

Health Grade A

Healthier than 91% of U.S. towns on seven CDC estimates.

Compared with Illinois

17better than IL·1worse

of 32 measures CDC estimates. The other 14 are too close to call.

Conditions 2▲ 1▼ 9 close Habits 3▲ 1 close Care 5▲ 2 close Mind 3▲ 2 close Everyday needs 4▲ 0 close

BetterToo close to callWorse

What stands out

7.7%Fewer adults facing housing insecurityIL 13.2% · better 4.6%Fewer adults facing a utility shut-offIL 7.8% · better 9.9%More adults who have had cancerIL 7.6% · worse

Care nearby

Uchicago Medicine Adventhealth HinsdaleHinsdale · 5.2 mi · ER

Will County Community Health Center - NorthBolingbrook · 6.2 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Darien · CMS · HRSAHealth in Darien →

Natural hazards in Darien

Low

Expected storm and flood damage is higher than in 24% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🌪️ Tornadoes

16Does Darien flood?paid flood claims since 1979 6Disasters that paid out herefederal disasters sent FEMA money to Darien MapDarien vs. its neighborsnearby towns shaded by rating

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Darien →

Climate in Darien

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Darien has chilly, snowy winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 16°, and about 42 inches of snow falls in a normal winter.

34° / 19°Winter

59° / 39°Spring

82° / 62°Summer

62° / 43°Fall