ZIP Codes count1 (see all)
Post offices count2 (see all)
Total population18,701 (see all)
ZIP Code for OTTAWA, Illinois
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.

ZIP Codes for OTTAWA, IL by streets

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List of OTTAWA, IL ZIP Codes


Post offices

405 W MAIN ST OTTAWA, IL 61350-2837
OTTAWA — Post Office
750 E ETNA RD OTTAWA, IL 61350-9998

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  2. Full street address
  3. City, State, and ZIP Code

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Address example

OTTAWA IL  61350-1002
2525 E 1649TH RD
OTTAWA IL  61350-9346
OTTAWA IL  61350-8000
1434 N 35TH RD
OTTAWA IL  61350-9516
OTTAWA IL  61350-34ND
OTTAWA IL  61350-3861


Census data for OTTAWA, IL

Demographic and housing estimates in OTTAWA, IL

Total population
Total population18,701
Population by age
Total population18,701
Under 5 years1,199
5 to 9 years1,166
10 to 14 years1,154
15 to 19 years1,199
20 to 24 years1,248
25 to 34 years2,598
35 to 44 years2,120
45 to 54 years2,276
55 to 59 years1,345
60 to 64 years1,080
65 to 74 years1,795
75 to 84 years974
85 years and over547
Median age (years)39.2
Under 18 years4,378
16 years and over14,840
18 years and over14,323
21 years and over13,603
62 years and over3,916
65 years and over3,316
Population by race
Total population18,701
One race18,154
   Black or African American727
   American Indian and Alaska Native37
   Native Hawaiian and Other Pacific Islander0
   Some other race372
Two or more races547
Citizen, voting age population
Citizen, VOTING AGE 18 and over population14,012
Male Citizen, VOTING AGE 18 and over population6,549
Female Citizen, VOTING AGE 18 and over population7,463

Social characteristics in OTTAWA, IL

Households by type
Total households7,893
Family households (families)5,090
Married-couple family3,347
Male householder, no wife present, family356
Female householder, no husband present, family1,387
Nonfamily households2,803
Average household size2.32
Average family size2.84

Economic characteristics in OTTAWA, IL

Income and benefits (in 2018 inflation-adjusted dollars)
Total households7,893
Less than $10,000434
$10,000 to $14,999528
$15,000 to $24,999906
$25,000 to $34,999954
$35,000 to $49,9991,085
$50,000 to $74,9991,750
$75,000 to $99,999808
$100,000 to $149,999932
$150,000 to $199,999306
$200,000 or more190
Median household income (dollars)50,437

Housing characteristics in OTTAWA, IL

Housing occupancy
Total housing units8,823
Occupied housing units7,893
Vacant housing units930
Units in structure
Total housing units8,823
1-unit, detached5,962
1-unit, attached618
2 units678
3 or 4 units473
5 to 9 units413
10 to 19 units200
20 or more units271
Mobile home208
Boat, RV, van, etc.0
Year structure built
Total housing units8,823
Built 2014 or later113
Built 2010 to 2013127
Built 2000 to 2009742
Built 1990 to 1999745
Built 1980 to 1989789
Built 1970 to 19791,016
Built 1960 to 1969755
Built 1950 to 19591,088
Built 1940 to 1949821
Built 1939 or earlier2,627
Total housing units8,823
1 room107
2 rooms236
3 rooms639
4 rooms1,648
5 rooms2,101
6 rooms1,493
7 rooms1,070
8 rooms728
9 rooms or more801
Median rooms5.3
Total housing units8,823
No bedroom113
1 bedroom956
2 bedrooms2,978
3 bedrooms3,565
4 bedrooms1,013
5 or more bedrooms198
Housing tenure
Occupied housing units7,893
Average household size of owner-occupied unit2.35
Average household size of renter-occupied unit2.27
Year householder moved into unit
Occupied housing units7,893
Moved in 2017 or later425
Moved in 2015 to 2016871
Moved in 2010 to 20142,334
Moved in 2000 to 20091,899
Moved in 1990 to 19991,183
Moved in 1989 and earlier1,181
Owner-occupied units4,999
Less than $50,000226
$50,000 to $99,9991,183
$100,000 to $149,9991,794
$150,000 to $199,999886
$200,000 to $299,999720
$300,000 to $499,999145
$500,000 to $999,99945
$1,000,000 or more0
Median (dollars)131,100
Mortgage status
Owner-occupied units4,999
Housing units with a mortgage3,102
Housing units without a mortgage1,897
Gross rent
Occupied units paying rent2,761
Less than $500397
$500 to $9991,922
$1,000 to $1,499436
$1,500 to $1,9996
$2,000 to $2,4990
$2,500 to $2,9990
$3,000 or more0
Median (dollars)782
No rent paid133
Data is based on 2018 Census

ZIP Codes for other locations

State for OTTAWA
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