| Settlement Type: | Micropolitan Statistical Area |
| Map Alt: | Map of Ottawa, IL Micropolitan Statistical Area |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | Principal city |
| Subdivision Name2: | Ottawa |
| Subdivision Type3: | Other city |
| Subdivision Name3: | Streator |
| Unit Pref: | US |
| Timezone1: | CST |
| Utc Offset1: | −6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | −5 |
The Ottawa, IL Micropolitan Statistical Area,[1] as defined by the United States Census Bureau, is an area consisting of three counties in north central Illinois, anchored by the city of Ottawa. Peru (until 2020) and Streator (until 2013) are former primary cities.
As of the 2010 census, the μSA had a population of 154,908.[2] An estimate by the Census Bureau, as of July 1, 2012, placed the population at 153,182, a decrease of 1.11%, but still making it the fourth-largest micropolitan statistical area in the United States.[2]
As of the census[4] of 2000, there were 153,098 people, 60,014 households, and 41,459 families residing within the Micropolitan Area. The racial makeup of the Area was 95.50% White, 1.23% African American, 0.18% Native American, 0.52% Asian, 0.02% Pacific Islander, 1.57% from other races, and 0.99% from two or more races. Hispanic or Latino of any race were 5.01% of the population.
The median income for a household in the Ottawa Micropolitan area was $42,011, and the median income for a family was $49,576. Males had a median income of $38,628 versus $21,706 for females. The per capita income for the area was $19,506.