Also See: Ottawa, IL ZIP Codes & ZIP Code Maps
The City of Ottawa had a population of 18,302 as of July 1, 2020.
The primary coordinate point for Ottawa is located at latitude 41.3456 and longitude -88.8426 in LaSalle County. The formal boundaries for the City of Ottawa encompass a land area of 11.95 sq. miles and a water area of 0.8 sq. miles. LaSalle County is in the Central time zone (GMT -6). The elevation is 482 feet.
The City of Ottawa (GNIS ID: 2396106) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.
Alternate Unofficial Names for Ottawa: Ottowa, South Ottawa.
|Total Population||18,302 (100%)|
|Population in Households||17,765 (97.1%)|
|Population in Families||13,893 (75.9%)|
|Population in Group Quarters1||537 ( 2.9%)|
|Median Household Income||$49,641|
|Average Household Income||$71,337|
|% of Income for Mortgage4||12%|
|Per Capita Income||$30,203|
|Total HU (Housing Units)||8,610 (100%)|
|Owner Occupied HU||4,721 (54.8%)|
|Renter Occupied HU||2,961 (34.4%)|
|Vacant Housing Units||928 (10.8%)|
|Median Home Value||$137,292|
|Average Home Value||$155,497|
|Housing Affordability Index3||169|
|Average Household Size||2.31|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||0.8%|
|Per Capita Income||1.55%|
|Owner Occupied HU||-0.4%|
The table below compares Ottawa to the other 1,369 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
|Total Population||# 141||90th|
|Population Density||# 481||65th|
|Median Household Income||# 1005||27th|
|Housing Affordability Index||# 299||22nd|
|Per Capita Income||# 616||55th|
|Diversity Index||# 357||74th|
Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.