Ottawa, Illinois — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of Ottawa, LaSalle County.
| City | Ottawa |
| State | Illinois (IL) |
| County | LaSalle |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 41.345589 |
| Longitude | -88.842577 |
| Population | 18,447 |
| Density | 485.1 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 61350 |
| Area Code | 815 |
| County Seat | Ottawa |
| School District | Ottawa Township High School District 140 |
Ottawa is a locality in LaSalle County, Illinois, United States. It has a population of 18,447. The population density is 485.1 people per km². Ottawa is located at 41.3456°N, 88.8426°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 61350.
Ottawa, Illinois, unfolds across a landscape where the Illinois and Fox Rivers converge, their waters reflecting the broad, open skies of the Prairie State. It lies 34.5 miles south-west of Oswego, IL (from Oswego, IL: bearing 228°T), and is situated 8.1 miles south-east of LaSalle. Rolling hills, softened by agricultural fields and stands of sturdy oak and maple, give way to the flatter, fertile plains that have long defined this region. The air here carries a distinct crispness, especially in the autumn, a tangible reminder of the vast agricultural expanse stretching in every direction. Even in the midst of its settled streets, the presence of the wide rivers and the whispering prairie grasses feels ever-present, shaping the very character of Ottawa. The history of Ottawa is deeply entwined with its waterways, serving as a vital hub for commerce and transportation since its founding. The Illinois and Michigan Canal, a significant engineering feat of its time, brought prosperity and people to Ottawa, fostering an economy built on trade and industry. Evidence of this past can be seen in the sturdy brick buildings that line its historic downtown, a silent testament to the robust trade that once flowed through its port. Today, agriculture remains a cornerstone, with vast fields of corn and soybeans painting the surrounding countryside, while tourism draws visitors to its riverfront parks and the nearby Starved Rock State Park, a natural wonder that has captivated imaginations for generations.
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This page provides an interactive Google map of Ottawa, Illinois with street, satellite and terrain views and integrated Street View imagery. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Ottawa and LaSalle County.
Detailed location data for Ottawa includes the ZIP code (61350), telephone area code (815), county seat of LaSalle County (Ottawa), and school district assignment (Ottawa Township High School District 140). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Ottawa is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | June 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |