Early voting locations in Prospect Heights, Illinois for November 3, 2026
- WhenWed, Oct 7 – Mon, Nov 2Started · 18 days left
- Where57 sitesIn Cook County · any site in the county
- Hours9 a.m. to 5 p.m.Most sites; see each site
- Election DayTue, Nov 36 a.m. to 7 p.m.
Find sites near me Find by ZIP code Election office
Prospect Heights is in Cook County. Prospect Heights has about 15,552 people, by the U.S. Census Bureau's 2025 estimate, which also gives its county lines. None of the 57 early voting sites Cook County lists has a Prospect Heights address; they are all on the Cook County early voting page.
From the Cook County Clerk (suburban Cook County)'s official list, checked October 15, 2026. Hours can change, so check before you go.
Early voting for Prospect Heights voters
Every early voting site in Cook County (57) is on the Cook County early voting page, with a ZIP code finder.
Cook County election authority
Find your Election Day polling place with the State Board of Elections' Polling Place Locator.
Illinois voting dates for Prospect Heights voters
| Date | What |
|---|---|
| Thu, Sep 24 Started | Mail ballots start going out source |
| Thu, Sep 24 Started | Early voting opens source |
| Tue, Oct 6 Ended | Last day to register by mail or at a registration site source |
| Wed, Oct 7 Started | Same-day registration opens source |
| Sun, Oct 18 | Register online source |
| Mon, Oct 19 | Early voting expands source |
| Thu, Oct 29 | Apply for a vote-by-mail ballot source |
| Mon, Nov 2 | Early voting ends source |
| Tue, Nov 3, 7 p.m. | Election Day: polls open 6 a.m. to 7 p.m. source |
| Tue, Nov 3, 7 p.m. | Register and vote the same day source |
| Tue, Nov 3 | Return your mail ballot source |
Prospect Heights voting questions
Where can I vote early in Prospect Heights?
Cook County lists 57 sites in all; see the Cook County early voting page.
When does early voting start in Prospect Heights?
Early voting in Prospect Heights (Cook County) started Wednesday, October 7, 2026 at the first sites to open. Some sites open later; each site's days are on this page.
When does early voting end in Prospect Heights?
The last day of early voting in Prospect Heights (Cook County) is Monday, November 2, 2026. Election Day is Tuesday, November 3.
What are the early voting hours in Prospect Heights?
Hours differ by site and day. The most common hours are 9 a.m. to 5 p.m. Check the site you plan to use before you go.
Who can vote early in Prospect Heights?
Any registered voter in Prospect Heights (Cook County). Illinois election authorities publish their own early voting sites. Any Chicago voter can vote at any Chicago site; any suburban Cook County voter can vote at any suburban Cook County site.
What is the phone number of the election office for Prospect Heights?
312-603-0906, the Cook County Clerk, 118 North Clark Street, Room 230, Chicago, IL 60602.
Which county runs elections in Prospect Heights?
Cook County. Prospect Heights voters register and vote with Cook County.
More for Prospect Heights voters
- Illinois voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Cook County early voting locations, every site in the county.
- Cook County election office: address and phone.
- Who is on the Illinois ballot, race by race.
- What's on my ballot and where do I vote, from your street address.
- Voting in every major U.S. city.
Other big cities in Illinois: Chicago, Aurora, Naperville, Joliet, Rockford, Elgin, Springfield, Peoria.
Sites, days and hours are Cook County's own, copied from its official list (named above); office details are from the Illinois State Board of Elections, Election Authorities (checked October 14, 2026). Dates are Illinois's, each linked to its source. Call the office before you go; city population and county lines are from the U.S. Census Bureau.