Marseilles
City in LaSalle County, Illinois

Marseilles is a city in LaSalle County, Illinois, with 4,845 residents (2020 Census). It sits at 505 ft (154 m) above sea level. The nearest town is Seneca, 3.3 miles E.
- 4,845residents (2020 Census)
- 505 ftelevation · 154 m
- 9.4 sq miland area · 24.4 km²
- 513 / sq mipopulation density
- 61341ZIP code
About Marseilles
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.
Text: Wikipedia · CC BY-SA 4.0
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Living in Marseilles
- Median household income
- $58,217
- Median home value
- $142,500
- Median rent
- $1,041/mo
- Median age
- 41.4
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Map of Marseilles
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Open in Google Maps ›Marseilles, IL population
Marseilles had 4,845 residents in the 2020 Census.
| 2020 Census | 4,845 |
|---|---|
| Density | 513 per sq mi (198 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Marseilles at a glance
| State | Illinois (IL) |
|---|---|
| County | LaSalle County |
| Type | City |
| Population | 4,845 (2020) |
| Land area | 9.44 sq mi (24.4 km²) |
| Water area | 0.48 sq mi (1.25 km²) |
| Elevation | 505 ft (154 m) |
| Coordinates | 41.3183° N, 88.6764° W |
| ZIP code | 61341 |
| Official website | marseillesil.net |
| Census code (GEOID) | 1747150 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Marseilles
- Seneca3.3 mi E
- Ottawa8.0 mi W
- Dayton8.1 mi NW
- Wedron9.7 mi NW
- Grand Ridge9.8 mi SW
- Kinsman10.4 mi SE
- Naplate10.6 mi W
- Ransom11.1 mi S
- Verona11.4 mi SE
- Serena12.0 mi N
- Morris13.8 mi E
- Mazon14.2 mi E
Straight-line distance between town centers.
Frequently asked questions about Marseilles
What county is Marseilles in?
Marseilles is in LaSalle County, Illinois.
What is the population of Marseilles, IL?
4,845 people lived in Marseilles at the 2020 Census.
What is the ZIP code of Marseilles, IL?
The ZIP code of Marseilles is 61341.
What is the elevation of Marseilles?
505 feet (154 m) above sea level.
What towns are near Marseilles?
Seneca (3.3 mi), Ottawa (8.0 mi), Dayton (8.1 mi), Wedron (9.7 mi), Grand Ridge (9.8 mi).
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