Marion Population 2026
Marion has a population of 17,803, making it the #2675 biggest city in 🇺🇸 United States, located in Illinois. It is about 495× smaller than New York City, the country's biggest city.
Population (city proper)
17,803
Rank in United States
#2675
Coordinates
37.73°N, 88.93°W
~129 m elevation · America/Chicago
Distance to capital (Washington)
1,045 km
649 miles, straight line
Other big cities in Illinois
| City | Population | Rank in United States |
|---|---|---|
| Chicago | 2,664,452 | #3 |
| Aurora | 200,661 | #125 |
| Rockford | 148,278 | #184 |
| Joliet | 147,861 | #186 |
| Naperville | 147,100 | #190 |
| Peoria | 115,070 | #259 |
| Springfield | 114,394 | #262 |
| North Peoria | 113,004 | #266 |
Cities near Marion
- Carbondale26,399 people · ~25 km away
- Mount Vernon15,087 people · ~65 km away
- Cape Girardeau39,462 people · ~70 km away
- Paducah24,864 people · ~78 km away
- Sikeston16,436 people · ~111 km away
- Henderson28,890 people · ~119 km away
FAQ
What is the population of Marion?
Marion has a population of 17,803 (city proper, latest official figure via GeoNames), making it the #2675 biggest city in United States.
What state is Marion in?
Marion is located in Illinois, United States.
Is Marion the capital of United States?
No, the capital of United States is Washington D.C., about 1,045 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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