OTTAWA, IL ZIP Code
| City | OTTAWA | 
| State | Illinois | 
| ZIP Codes count | 1 (see all) | 
| Post offices count | 2 (see all) | 
| Total population | 18,701 (see all) | 
ZIP Code in OTTAWA, Illinois
61350
This list contains only 5-digit ZIP codes. Use our zip code lookup by address feature to get the full 9-digit (ZIP+4) code.
List of OTTAWA, IL ZIP Codes
| ZIP | TYPE | POPU | 
|---|---|---|
| 61350 | STANDARD | 24,444 | 
Post offices
DOWNTOWN OTTAWA — Post Office™ 405 W MAIN ST OTTAWA, IL 61350-2837  | 
OTTAWA — Post Office™ 750 E ETNA RD OTTAWA, IL 61350-9998  | 
Envelope example
On the bottom center of the envelope, write the address you want your letter delivered to. Include the following on separate lines:
- Recipient's full name
 - Full street address
 - City, State, and ZIP Code
 
Using the same format, write the return address in the top left corner.
Using the full ZIP+4 Code when mailing via the USPS ensures the fastest, most accurate mailing possible. If you are not sure of the full 9-digit ZIP Code, use the 5-digit ZIP Code to avoid loss of letter or package.

The recipient address information is provided for your reference.
Address example
770 CENTENNIAL DR
OTTAWA IL 61350-1002
OTTAWA IL 61350-1002
2525 E 1649TH RD
OTTAWA IL 61350-9346
OTTAWA IL 61350-9346
814 KIMBERLY LN
OTTAWA IL 61350-8000
OTTAWA IL 61350-8000
1434 N 35TH RD
OTTAWA IL 61350-9516
OTTAWA IL 61350-9516
262 SAINT JAMES ST
OTTAWA IL 61350-34ND
OTTAWA IL 61350-34ND
779 WESTWOOD DR
OTTAWA IL 61350-3861
OTTAWA IL 61350-3861
Map
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Census data for OTTAWA, IL
Demographic and housing estimates in OTTAWA, IL
| Total population | 18,701 | 
| Male | 8,639 | 
| Female | 10,062 | 
| Total population | 18,701 | 
| Under 5 years | 1,199 | 
| 5 to 9 years | 1,166 | 
| 10 to 14 years | 1,154 | 
| 15 to 19 years | 1,199 | 
| 20 to 24 years | 1,248 | 
| 25 to 34 years | 2,598 | 
| 35 to 44 years | 2,120 | 
| 45 to 54 years | 2,276 | 
| 55 to 59 years | 1,345 | 
| 60 to 64 years | 1,080 | 
| 65 to 74 years | 1,795 | 
| 75 to 84 years | 974 | 
| 85 years and over | 547 | 
| Median age (years) | 39.2 | 
| Under 18 years | 4,378 | 
| 16 years and over | 14,840 | 
| 18 years and over | 14,323 | 
| 21 years and over | 13,603 | 
| 62 years and over | 3,916 | 
| 65 years and over | 3,316 | 
| Total population | 18,701 | 
| One race | 18,154 | 
| White | 16,850 | 
| Black or African American | 727 | 
| American Indian and Alaska Native | 37 | 
| Asian | 168 | 
| Native Hawaiian and Other Pacific Islander | 0 | 
| Some other race | 372 | 
| Two or more races | 547 | 
| Citizen, VOTING AGE 18 and over population | 14,012 | 
| Male Citizen, VOTING AGE 18 and over population | 6,549 | 
| Female Citizen, VOTING AGE 18 and over population | 7,463 | 
Social characteristics in OTTAWA, IL
| Total households | 7,893 | 
| Family households (families) | 5,090 | 
| Married-couple family | 3,347 | 
| Male householder, no wife present, family | 356 | 
| Female householder, no husband present, family | 1,387 | 
| Nonfamily households | 2,803 | 
| Average household size | 2.32 | 
| Average family size | 2.84 | 
Economic characteristics in OTTAWA, IL
| Total households | 7,893 | 
| Less than $10,000 | 434 | 
| $10,000 to $14,999 | 528 | 
| $15,000 to $24,999 | 906 | 
| $25,000 to $34,999 | 954 | 
| $35,000 to $49,999 | 1,085 | 
| $50,000 to $74,999 | 1,750 | 
| $75,000 to $99,999 | 808 | 
| $100,000 to $149,999 | 932 | 
| $150,000 to $199,999 | 306 | 
| $200,000 or more | 190 | 
| Median household income (dollars) | 50,437 | 
Housing characteristics in OTTAWA, IL
| Total housing units | 8,823 | 
| Occupied housing units | 7,893 | 
| Vacant housing units | 930 | 
| Total housing units | 8,823 | 
| 1-unit, detached | 5,962 | 
| 1-unit, attached | 618 | 
| 2 units | 678 | 
| 3 or 4 units | 473 | 
| 5 to 9 units | 413 | 
| 10 to 19 units | 200 | 
| 20 or more units | 271 | 
| Mobile home | 208 | 
| Boat, RV, van, etc. | 0 | 
| Total housing units | 8,823 | 
| Built 2014 or later | 113 | 
| Built 2010 to 2013 | 127 | 
| Built 2000 to 2009 | 742 | 
| Built 1990 to 1999 | 745 | 
| Built 1980 to 1989 | 789 | 
| Built 1970 to 1979 | 1,016 | 
| Built 1960 to 1969 | 755 | 
| Built 1950 to 1959 | 1,088 | 
| Built 1940 to 1949 | 821 | 
| Built 1939 or earlier | 2,627 | 
| Total housing units | 8,823 | 
| 1 room | 107 | 
| 2 rooms | 236 | 
| 3 rooms | 639 | 
| 4 rooms | 1,648 | 
| 5 rooms | 2,101 | 
| 6 rooms | 1,493 | 
| 7 rooms | 1,070 | 
| 8 rooms | 728 | 
| 9 rooms or more | 801 | 
| Median rooms | 5.3 | 
| Total housing units | 8,823 | 
| No bedroom | 113 | 
| 1 bedroom | 956 | 
| 2 bedrooms | 2,978 | 
| 3 bedrooms | 3,565 | 
| 4 bedrooms | 1,013 | 
| 5 or more bedrooms | 198 | 
| Occupied housing units | 7,893 | 
| Owner-occupied | 4,999 | 
| Renter-occupied | 2,894 | 
| Average household size of owner-occupied unit | 2.35 | 
| Average household size of renter-occupied unit | 2.27 | 
| Occupied housing units | 7,893 | 
| Moved in 2017 or later | 425 | 
| Moved in 2015 to 2016 | 871 | 
| Moved in 2010 to 2014 | 2,334 | 
| Moved in 2000 to 2009 | 1,899 | 
| Moved in 1990 to 1999 | 1,183 | 
| Moved in 1989 and earlier | 1,181 | 
| Owner-occupied units | 4,999 | 
| Less than $50,000 | 226 | 
| $50,000 to $99,999 | 1,183 | 
| $100,000 to $149,999 | 1,794 | 
| $150,000 to $199,999 | 886 | 
| $200,000 to $299,999 | 720 | 
| $300,000 to $499,999 | 145 | 
| $500,000 to $999,999 | 45 | 
| $1,000,000 or more | 0 | 
| Median (dollars) | 131,100 | 
| Owner-occupied units | 4,999 | 
| Housing units with a mortgage | 3,102 | 
| Housing units without a mortgage | 1,897 | 
| Occupied units paying rent | 2,761 | 
| Less than $500 | 397 | 
| $500 to $999 | 1,922 | 
| $1,000 to $1,499 | 436 | 
| $1,500 to $1,999 | 6 | 
| $2,000 to $2,499 | 0 | 
| $2,500 to $2,999 | 0 | 
| $3,000 or more | 0 | 
| Median (dollars) | 782 | 
| No rent paid | 133 | 
Data is based on 2018 Census
ZIP Codes for other locations
State for OTTAWA
Illinois ZIP CodesOther cities in Illinois