Ottawa, Illinois
Ottawa is a city in LaSalle County, Illinois, with an estimated population of 18,752 in 2023. It sits at 41.3540, -88.8234 in the America/Chicago time zone.
| Field | Value |
|---|---|
| Place name | Ottawa |
| Type | city |
| State | Illinois (IL) |
| County | LaSalle County |
| Population (2023 est.) | 18,752 |
| Land area | 14.89 sq mi (38.58 km²) |
| Coordinates | 41.3540, -88.8234 |
| Time zone | America/Chicago |
| ZIP codes | 61350 |
ZIP codes and area codes for Ottawa
Ottawa covers 1 ZIP code: 61350. Browse all ZIP codes in Illinois for the full list.
Where is Ottawa?
Ottawa is located in Illinois, in LaSalle County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Naplate 5 km · ILGrand Ridge 13 km · ILMarseilles 14 km · ILNorth Utica 16 km · ILSeneca 18 km · ILOglesby 22 km · ILSheridan 23 km · ILLaSalle 23 km · IL
Other places in LaSalle County
Streator 12,269Peru 9,780LaSalle 9,432Mendota 6,929Marseilles 4,773Oglesby 3,639Sheridan 2,418Seneca 2,311Earlville 1,597North Utica 1,332
Related
Frequently asked questions
What county is Ottawa, IL in?
Ottawa is in LaSalle County, Illinois.
What is the population of Ottawa, IL?
The 2023 Census Bureau estimate is 18,752.
What time zone is Ottawa in?
Ottawa is in the America/Chicago time zone.