773 Area Code Cities – Location Map & Zip Codes

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📞 773 Area Code — Quick Reference
📍 LocationChicago, Illinois
🕐 Time ZoneCentral (UTC-6/UTC-5)
🗓️ StatusActive — Geographic

Got a call from 773? That number originates in Chicago, Illinois. Whether you received an unexpected call from this number or you’re trying to figure out where a 773 number is based, this guide covers the exact location, time zone, spam reputation, blocking instructions, and which cities fall under this code.

📍 Where Is the 773 Area Code Located?

The 773 area code is located in Illinois, primarily serving Chicago and the surrounding region. It’s a standard geographic area code under the North American Numbering Plan (NANP). Keep in mind that mobile number portability means someone could carry a 773 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

773 Area Code — Location Details
State/ProvinceIllinois (IL)
Major CityChicago
CountryUnited States (+1)
Time ZoneCentral (UTC-6/UTC-5)
TypeGeographic — Standard
NANPA StatusActive

🕐 773 Area Code Time Zone

The 773 area code operates in the Central Time Zone (UTC-6/UTC-5). Here’s how it compares to other US time zones:

Time ZoneDifference from 773
Eastern Time+1 hour
Central TimeSame time
Mountain Time-1 hour
Pacific Time-2 hours
💡 Calling Tip: Reach someone in the 773 area between 10 AM – 4 PM their local time for the best chance of an answer. Calls outside those hours are more likely to be screened or ignored.

🛡️ Is 773 Area Code Spam or Scam?

Seeing 773 on your caller ID doesn’t automatically mean spam — it’s a real area code used by many in Chicago. But robocallers frequently disguise their actual numbers behind familiar area codes like 773. If a 773 call feels off, hang up and verify independently.

⚠️ Red Flag: If a 773 caller demands immediate payment via gift cards, wire transfer, or crypto — hang up. No legitimate organization uses these methods. Verify by calling the company’s official number directly.

How to verify: Don’t call back the number — look up the official number for whatever organization the caller claimed to represent and call that instead. Google the full 10-digit number in quotes to check if others have reported it as spam.

📵 How to Block 773 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 773 spam number
  3. Scroll down → “Block this Caller”
  4. Silence all unknowns: Settings → Phone → Silence Unknown Callers → ON

Block on Android

  1. Open Phone → find the 773 number
  2. Tap ⋮ menu → “Block number”
  3. For broader blocking: Settings → Blocked numbers → Unknown toggle ON

Report Spam

  1. Forward spam texts to 7726 (SPAM)
  2. Report at reportfraud.ftc.gov
  3. Register at donotcall.gov or call 1-888-382-1222

🔍 Who Called from 773? Reverse Lookup

  1. Google the full 10-digit number in quotes — catches ~70% of unknown callers
  2. Check Whitepages.com or Truecaller.com
  3. Search 800notes.com for community reports
  4. No voicemail left? Almost certainly spam — legitimate callers leave messages
⚠️ One-Ring Scam: If a 773 number rings once and hangs up, do NOT call back. This scam connects you to a premium-rate line that charges your bill.

🔗 Nearby Area Codes

CodeLocationTime Zone
312Chicago, IllinoisCentral
630Aurora, IllinoisCentral
224Arlington Heights, IllinoisCentral
217Springfield, IllinoisCentral
708Chicago Heights, IllinoisCentral

❓ 773 Area Code — FAQ

What state is 773 area code in?
The 773 area code is in Illinois, serving Chicago and surrounding areas.
What city does 773 cover?
773 primarily covers Chicago and nearby communities in Illinois.
Is 773 toll-free?
No. 773 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 773?
Central (UTC-6/UTC-5).
Is 773 a scam?
773 is legitimate — it serves real people in Chicago. But scammers may spoof 773 numbers. Verify suspicious callers independently.
Why do I keep getting 773 calls?
Repeated 773 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 773 number remotely?
Yes — VoIP services like Google Voice offer 773 numbers regardless of where you live.
Is 773 cell or landline?
773 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 773 calls?
iPhone: Settings → Phone → Silence Unknown Callers. Android: Phone → Settings → Blocked numbers. For area-code blocking, use Truecaller or RoboKiller.

🔗 Related Area Code Guides

Updated April 2026 · Data from NANPA & FCC · areacodess.org/