Denise Mathews, Realtor, is a Northwest Indiana born, raised, and lifelong resident and multiple business owner. Join her in exploring The Region thru the Northwest Indiana Living website & social media sites.
many of the northwest indiana zip codes in a word cloud

Northwest Indiana Zip Codes Listings

These easy to read NWI zip codes tables provide a quick reference guide to the zip code and its associated city or town. The blue buttons to each city/town Community Page are conveniently linked to their nwi community pages.  Once there, you can find detailed information on each city or town.

These tables of Region zip codes include Lake County and Porter County only.  However, the visual map below does show the rest of the Northwest Indiana zip codes.

Northwest Indiana Zip Codes Tables

Lake County Indiana Zip Codes

Pop.
Community Page
46303 - Cedar Lake
14,170
46307 - Crown Point
60,619
46311 - Dyer
20,816
46312 - East Chicago
29,698
46319 - Griffith
18,404
46320 - Hammond
15,508
46321 - Munster
23,603
46322 - Highland
23,727
46323 - Hammond
22,743
46324 - Hammond
23,165
46327 - Hammond
12,153
46342 - Hobart
32,244
46356 - Lowell
17,524
46373 - St John
13,859
46375 - Schererville
23,820
46376 - Schneider
398
46377 - Shelby
389
46394 - Whiting
12,258
46402 - Gary
6,726
46403 - Gary
12,601
46404 - Gary
17,326
46405 - Lake Station
11,746
46406 - Gary
9,900
46407 - Gary
12,656
46408 - Gary
17,030
46409 - Gary
8,932
46410 - Merrillville
38,340

Porter County Indiana Zip Codes

Pop.
Community Page
46301 - Beverly Shores
669
46304 - Chesterton
24,207
46341 - Hebron
10,426
46347 - Kouts
4,760
46368 - Portage
38,691
46383 - Valparaiso
39,687
46385 - Valparaiso
38,866
46393 - Wheeler
399
people in a row representing Northwest Indiana Communities uniting together

Entire 13 County Northwest Indiana Zip Codes Map

NW Indiana technically includes a 13 county span of the uppermost northwest area, although this website concentrates on the area known as The Region. Here is a map of the counties and individual zip codes in each.

Northwest Indiana Zip Codes Map

Other Handy Resources and Links

Thinking of Buying a House in NW Indiana?

NW Indiana is a great place to live! It’s convenient to commute to Chicago, property taxes are much lower than our neighboring state, and the diversity of the area lets you choose a neighborhood you will be comfortable in.

Grab a FREE Buyer’s Guide To Real Estate to learn about the process of buying a house. If you are selling a home in NW Indiana, check out this Free Guide  especially for homeowners.

If you’ve never bought a house before, here is the first time home buyer website for you with all your answers!

Search All NWI Homes For Sale Here!