410 Area CodeBaltimore, MD
Area code 410 covers Baltimore and nearby communities in Maryland, in the Eastern Time (ET) zone, home to about 2.5 million people across 208 cities. It overlays 443 and 667, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Baltimore
- State
- Maryland (MD)
- Timezone
- Eastern Time (ET)
- Current Time
- Overlay
- Yes – shares area with 443, 667
Overview of the 410 Area Code
What is the 410 area code?
The 410 area code serves Baltimore, Maryland, alongside other established area codes. When you see a 410 number, it indicates a local number within this geographic area.
Why was area code 410 created?
The 410 area code was introduced as an overlay to add numbers in Baltimore once the existing area codes 443 and 667 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 410 Area Code
The 410 area code serves Baltimore and surrounding areas in Maryland. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 443 and 667. This area code covers several key cities, including:
- Baltimore
- Columbia
- Glen Burnie
- Ellicott City
- Dundalk
- Towson
Got a call from a 410 number? It came from Baltimore, MD. Since 410 overlays with 443 and 667, every local call in the region needs all ten digits to land on the right line. Inside 410, Baltimore holds about 23% of the population; the rest is split across 207 smaller cities.
Baltimore Area Codes Overview
Baltimore is served by multiple area codes, reflecting its telecommunications needs. The 410 area code operates alongside 443, 667. Here are the area codes serving this region:
The introduction of the 410 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 410 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Baltimore | MD | 568,271 | 1% | 100% |
| Columbia | MD | 99,615 | 0% | 93% |
| Glen Burnie | MD | 67,639 | 0% | 100% |
| Ellicott City | MD | 65,834 | 0% | 100% |
| Dundalk | MD | 63,597 | 0% | 100% |
| Towson | MD | 55,197 | 0% | 100% |
| Bel Air South | MD | 47,709 | 0% | 100% |
| Severn | MD | 44,231 | 0% | 100% |
| Catonsville | MD | 41,567 | 0% | 100% |
| Annapolis | MD | 40,689 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 410 been reported for unwanted calls?
Yes – 669 unwanted-call complaints were reported to the FTC for numbers showing a 410 area code (May 29 – Jul 2, 2026).
- 66% robocalls
- ↑ 65% vs prior period
Most-reported subjects
- Other56%377
- Dropped call or no message17%114
- Calls pretending to be government, businesses, or family and friends7%46
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 410?
78% assigned to a telco
- 80% Landline
- 20% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (410)200- | Landline | Mcimetro Access Transmission Services |
| (410)202- | Wireless | Verizon Wireless |
| (410)203- | Landline | Verizon Maryland |
| (410)204- | Landline | Verizon Maryland |
| (410)205- | Wireless | New Cingular Wireless Pcs |
| (410)206- | Wireless | New Cingular Wireless Pcs |
| (410)207- | Wireless | Verizon Wireless |
| (410)208- | Landline | Verizon Maryland |
| (410)209- | Landline | Verizon Maryland |
| (410)210- | Wireless | Verizon Wireless |
Frequently Asked Questions about the 410 Area Code
Who called me from a 410 number?
A 410 number is assigned to Baltimore, Maryland, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 410 code to look nearby, so a 410 number doesn't prove the caller is local. Recently, 669 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (66% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 410 a scam area code?
No area code is a scam on its own. 410 is a normal, officially assigned code for Baltimore, Maryland. Spam callers spoof local codes to raise the odds you answer, so 410 on your caller ID says nothing about who is really calling. Recently, 669 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (66% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 410 area code?
Repeated calls from different 410 numbers are usually spoofing: a robocaller rotates through 410 numbers so each call looks local and slips past simple blocks. Recently, 669 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (66% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 410 number?
If you aren't expecting a 410 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 410 area code?
Block a single 410 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 410 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 410?
Area code 410 covers Baltimore and the surrounding area in Maryland, spanning 208 cities with about 2,468,985 residents. It shares its area with overlay codes 443, 667.
Is 410 a real area code?
Yes. 410 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Baltimore, Maryland. A real code can still show up on spoofed spam calls, so treat unknown 410 calls with normal caution.
What timezone is the 410 area code in?
The 410 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 410 caller may not be in that zone.
How do I call a 410 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 410 and the seven-digit number. From a mobile phone you can usually just enter +1 410 followed by the number and let the phone add the exit code for you.