Marseilles ( mar-SAYLZ) is a city in LaSalle County, Illinois, United States. An Illinois River town, the population was 4,845 at the 2020 census, down from 5,094 at the 2010 census. It is part of the Ottawa, IL Micropolitan Statistical Area.

Official town website ↗

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

How Marseilles ranks

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#118Most trails in IL #190Lowest property tax in IL #216Most affordable in IL All IL rankings →

Town numbers

ZIP code61341

Area code815

Living in Marseilles

Housing in Marseilles

$203K▲ 5.5% in a year Typical home value · Zillow

The typical Marseilles home is worth about $203,000, up 5.5% in a year, 32% below the Illinois typical home.

Only 1 sale in May 2026, too few for a market read. The typical value is the steadier guide.

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Marseilles

A⁻

Safety Grade A-

Marseilles reports less crime per resident than 75% of the U.S. towns and cities we grade.

Violent crime per 1,000

Marseilles 1.3

Illinois 2.6

U.S. 3.3

Property crime per 1,000

Marseilles 3.6

Illinois 15.6

U.S. 15.5

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

Work & commute in Marseilles

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Most working residents leave Marseilles for work: only 6% work in town. The top destinations are Ottawa (12%), Morris (5%) and Seneca (4%). Half commute less than 23 miles.

Ottawa

12%

Morris

Seneca

Chicago

6%Work in townlive and work in Marseilles 23 miWhere do people commute?the commute map 886Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Marseilles →

Health in Marseilles

B⁻

Health Grade B−

Healthier than 47% of U.S. towns on seven CDC estimates, and 75% of towns with similar incomes.

Compared with Illinois

1better than IL·8worse

of 32 measures CDC estimates. The other 23 are too close to call.

Conditions 5▼ 7 close Habits 1▼ 3 close Care 1▲ 6 close Mind 2▼ 3 close Everyday needs all close

BetterToo close to callWorse

What stands out

8.3%Fewer uninsured adultsIL 9.9% · better 15.6%More smokersIL 12.1% · worse

Care nearby

Morris Hospital & Healthcare CentersMorris · 13.4 mi · ER

Community Health Partnership of IllinoisMendota · 28 mi · sliding-scale fees

Primary careShortage · county-wide

DentalShortage · county-wide

Mental healthShortage · county-wide

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

Natural hazards in Marseilles

High

Expected storm and flood damage is higher than in 73% of U.S. communities.

🌊 Inland flooding🥶 Cold waves🌪️ Tornadoes

11Does Marseilles flood?paid flood claims since 2011 8Disasters that paid out herefederal disasters sent FEMA money to Marseilles MapMarseilles vs. its neighborsnearby towns shaded by rating

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

Climate in Marseilles

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Marseilles has chilly winters and warm summers. A typical July afternoon reaches 85°, a January night drops to 16°, and about 25 inches of snow falls in a normal winter.

35° / 19°Winter

61° / 39°Spring

83° / 62°Summer

64° / 42°Fall