What's open, closed during Chicago's deep freeze

Here is a list of what is open and closed during the Chicago area's deep freeze on Wednesday and Thursday.

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 from a frozen Lake Michigan in Chicago as temperatures plunged to -23 degrees Wednesday morning.

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 got creative with their kids who stayed 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

ABC7 meteorologist Larry Mowry explains how the Polar Vortex is responsible for the bitter cold in late January and February.