Jacksonville Population 2026
Jacksonville has a population of 19,103, making it the #2497 biggest city in 🇺🇸 United States, located in Illinois. It is about 461× smaller than New York City, the country's biggest city.
Population (city proper)
19,103
Rank in United States
#2497
Coordinates
39.73°N, 90.23°W
~186 m elevation · America/Chicago
Distance to capital (Washington)
1,138 km
707 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 Jacksonville
- Springfield114,394 people · ~51 km away
- Macomb18,547 people · ~89 km away
- Upper Alton29,251 people · ~92 km away
- Alton27,003 people · ~94 km away
- Hannibal17,839 people · ~97 km away
- Quincy40,780 people · ~103 km away
FAQ
What is the population of Jacksonville?
Jacksonville has a population of 19,103 (city proper, latest official figure via GeoNames), making it the #2497 biggest city in United States.
What state is Jacksonville in?
Jacksonville is located in Illinois, United States.
Is Jacksonville the capital of United States?
No, the capital of United States is Washington D.C., about 1,138 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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