RELATED: Chicago Weather: Polar vortex brings record cold
RELATED: Find a Chicago area warming center near you
GOVERNMENT SERVICES
--U. S. Postal Service -- Delivery suspended Wednesday and Thursday for the following 3-digit zip codes:
Indiana: 460-469, 472-475, 478, 479
Chicago: 606-608
Central Illinois: 601, 603 - 605, 609, 613, 614, 616, 617
Michigan: 486-491, 493-499
USPS says residents can pick up their mail at their neighborhood post office with a photo ID. USPS hopes to have normal delivery on Friday.
RELATED: Too cold for mail: Subzero temps in Midwest prompts USPS to suspend service
-Courthouses in Cook, DuPage, Lake, Kane, McHenry and Will counties - Closed Wednesday and Thursday
-Illinois Secretary of State offices - Closed Wednesday
-Illinois Social Security offices - Several offices closed or opening later on Thursday in Chicago and suburbs
-Early voting in Chicago -- Loop Supersite for Chicago mayoral election closed Wednesday and Thursday
-Kane County Clerk's Office open
RETAIL
-Trader Joe's - Some stores in Midwest closed or limited hours
-Abt Electronics - All delivery and service calls canceled Wednesday and Thursday
FOOD
-Lettuce Entertain You - Click here to see which restaurants are closed and closing early
-Lou Malnati's - Closing early at 8 p.m. Wednesday
-La Colombe Coffee - Closed Wednesday
-Cheesie's Pub & Grill - Closed Wednesday
-Smoque BBQ - Open Wednesday
-Superdawg - Open Wednesday and Thursday
-Garrett Popcorn - Closed Wednesday, except O'Hare location
-Manny's Deli - Closed Wednesday
Steam rises off Lake Michigan in Chicago as temps plunge to -23 degrees
Steam rises off Lake Michigan in Chicago as temps plunge
ENTERTAINMENT
YMCA of Metro Chicago - Closed Wednesday, and modified schedule on Thursday
Great Joliet Area YMCA - Closed Wednesday and Thursday
"Disney on Ice" at United Center - Wednesday night and 10:30 a.m. Thursday performance cancelled
"Hamilton" - Wednesday performances cancelled
Kacey Musgraves at Chicago Theatre - Thursday show rescheduled for 8 p.m. March 25
Lincoln Park Zoo -- Closed Wednesday and Thursday for the safety of animals and visitors
Navy Pier - Closed Wednesday. Select attractions closed on Thursday
Shedd Aquarium - Closed Wednesday
Museum of Science & Industry - Closed Wednesday
Art Institute of Chicago - Closed Wednesday and Thursday
Brookfield Zoo - Closed Wednesday and Thursday
Block 37 - Some retails closed
Chicago Botanic Garden - Closed Wednesday and Thursday
Allstate Arena - Box office will close at 3 p.m. Wednesday
Northlight Theatre - Wednesday performance canceled
Goodman Theatre - Closed Wednesday
Lookingglass Theatre - Box office closed Wednesday
Marriott Theatre in Lincolnshire - Wednesday performances canceled
Parents get creative with kids at home during Chicago's deep freeze
UNIVERSITIES
Northwestern University - Classes closed until noon Thursday.
University of Chicago -- Classes canceled Wednesday
Loyola University - Classes canceled until noon Thursday
DePaul University - Classes canceled through Thursday
Columbia College - Classes canceled Wednesday and Thursday
School of the Art Institute -- Classes canceled Wednesday and Thursday
TRANSIT
South Shore - Service suspended Wednesday and Thursday
Metra Electric - Service suspended Wednesday and Thursday
Metra - All trains to run on modified scheduled. No trains to depart Chicago after 10:40 p.m. Last train to Chicago arrives by 10:49 p.m.
Amtrak - All service to and from Chicago canceled Wednesday and Thursday
Polar Vortex Explainer: Get ready for bitter cold the next few weeks
Polar Vortex Explainer: Get ready for bitter cold the next few weeks