Overnight
66°F
Mostly Cloudy6% precip
Sunday
80°F
Mostly Cloudy2% precip
Sunday Night
59°F
Mostly Clear
Monday
82°F
Sunny
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Ottawa by the numbers
Population
18,097Population figure, 2020
Households & income
- Area
- 14.89 sq mi (38.57 km²), 0.86 sq mi water
- Median age
- 39.8
- Households
- 7,553
- Persons per household
- 2.4
- Median household income
- $71,413
- Median house value
- $154,000
Municipal office
- Office
- CITY CLERK
- Address
- 301 W MADISON ST, OTTAWA, IL 61350