Area Code 410: Baltimore, MD Local Numbers
Area code 410 is the telephone area code for Baltimore and the Maryland Eastern Shore. Established in 1991 when 301 was split, 410 is the heritage code of Baltimore — strongly tied to the city's port, healthcare and biotech industries (Johns Hopkins), and the broader Chesapeake Bay region.
904+ Baltimore businesses already use Brilo
410 Quick Facts
Live data
📍
Region
Baltimore, MD
🕐
Time Zone
Eastern (ET)
🗺️
Major Cities
Baltimore, Annapolis, Towson
📞
Overlay For
Area Code 443
✅
Numbers Available
21 numbers available
Area Code 410: Baltimore, MD Local Numbers
Area code 410 is the telephone area code for Baltimore and the Maryland Eastern Shore. Established in 1991 when 301 was split, 410 is the heritage code of Baltimore — strongly tied to the city's port, healthcare and biotech industries (Johns Hopkins), and the broader Chesapeake Bay region.
904+ Baltimore businesses already use Brilo
410 Quick Facts
Live data
📍
Region
Baltimore, MD
🕐
Time Zone
Eastern (ET)
🗺️
Major Cities
Baltimore, Annapolis, Towson
📞
Overlay For
Area Code 443
✅
Numbers Available
21 numbers available
Area Code
Feature Answer
What is Area Code 410?
What is Area Code 410?
What is Area Code 410?
What is Area Code 410?
Area code 410 is a North American telephone area code assigned to Baltimore, Maryland. Created in 1991 when 301 was split to relieve number exhaustion in the DC metro region, 410 became the dedicated code for Baltimore and the rest of Maryland east of Washington. It serves Baltimore, Annapolis, Towson, Dundalk, Glen Burnie, the Eastern Shore, and southern Maryland, and is a local (non-toll-free) area code in the Eastern Time Zone.
Area code 410 is a North American telephone area code assigned to Baltimore, Maryland. Created in 1991 when 301 was split to relieve number exhaustion in the DC metro region, 410 became the dedicated code for Baltimore and the rest of Maryland east of Washington. It serves Baltimore, Annapolis, Towson, Dundalk, Glen Burnie, the Eastern Shore, and southern Maryland, and is a local (non-toll-free) area code in the Eastern Time Zone.
Before 1991, all of Maryland shared 301 with the DC suburbs. The 1991 split assigned 410 to Baltimore and eastern Maryland, leaving 301 for the DC suburbs and western Maryland. As Baltimore's healthcare, biotech, and port industries grew, overlay 443 was added in 1997 — one of the first area code overlays in North America. A second overlay, 667, was added in 2012. Despite the overlays, a 410 number remains the heritage signal for established Baltimore businesses, including Johns Hopkins, Under Armour, the Port of Baltimore, and the city's many maritime and biotech firms.
Before 1991, all of Maryland shared 301 with the DC suburbs. The 1991 split assigned 410 to Baltimore and eastern Maryland, leaving 301 for the DC suburbs and western Maryland. As Baltimore's healthcare, biotech, and port industries grew, overlay 443 was added in 1997 — one of the first area code overlays in North America. A second overlay, 667, was added in 2012. Despite the overlays, a 410 number remains the heritage signal for established Baltimore businesses, including Johns Hopkins, Under Armour, the Port of Baltimore, and the city's many maritime and biotech firms.
📍
Baltimore, MD
⏰
Eastern (ET)
✅
21 numbers available
📅
Est. 1991
Area Code
Coverage Data
Cities & Zip Codes in Area Code 410
Cities & Zip Codes in Area Code 410
Cities & Zip Codes in Area Code 410
All cities and communities served by the 410 area code across Baltimore and the Maryland Eastern Shore.
All cities and communities served by the 410 area code across Baltimore and the Maryland Eastern Shore.
410 Area Code City Coverage
904+
City
County
Zip Codes
Est. Businesses
Area Code
Spam Inteligence
Is Area Code 410 Spam?
Is Area Code 410 Spam?
Is Area Code 410 Spam?
We aggregate spam reports from thousands of sources. Here's what the data shows for 410 this month.
410 Spam Activity Score — Last 30 Days
Low
Low
Low
30% of reported US area codes have higher spam activity
📊 Total reports this month
118
📞 Top reported prefixes
410-256, 410-823
📈 Trend vs last month
↓ 5% lower
🏆 Trust ranking
Top 30% of US area codes
CALLER ID, FIXED
How does a verified 410 line beat the screening?
Even a Charm City 410 code can hit voicemail if it's not registered. Baltimore customers are 3.1x more likely to answer a 410 call that shows up as a verified business than one displaying as just digits.
Even a Charm City 410 code can hit voicemail if it's not registered. Baltimore customers are 3.1x more likely to answer a 410 call that shows up as a verified business than one displaying as just digits.
3.1x higher answer rate with a verified 410 number
Stand out from spam. A Brilo 410 number comes with a verified business profile, AI-powered calling, and live transcripts — so you're never mistaken for a robocall.
Stand out from spam. A Brilo 410 number comes with a verified business profile, AI-powered calling, and live transcripts — so you're never mistaken for a robocall.
Area Code
Why Go local
Why Baltimore Businesses Choose a 410 Number
Why Baltimore Businesses Choose a 410 Number
Why Baltimore Businesses Choose a 410 Number
Why Baltimore Businesses Choose a 410 Number
For 904+ Baltimore-area businesses, the 410 is the code that came with Charm City. Brilo's AI agents handle every call on that line — keeping it local even as the team grows.
For 904+ Baltimore-area businesses, the 410 is the code that came with Charm City. Brilo's AI agents handle every call on that line — keeping it local even as the team grows.
Local vs Other Number Types
📍 Local Number
📍 Local Number
80% answer rate
80% answer rate
📞 Toll-Free 800 Number
📞 Toll-Free 800 Number
34% answer rate
34% answer rate
📱 Out-of-State Number
📱 Out-of-State Number
21% answer rate
21% answer rate
❓ Unknown / VoIP
❓ Unknown / VoIP
11% answer rate
11% answer rate
📍
Local Trust Signal
Baltimore customers answer a 410 call 3.6x more often than an out-of-state line. The code that came with Charm City still earns more pickups than any vanity 800 — locals notice.
🤖
AI-Powered Calls
Brilo's AI agents handle inbound and outbound on your 410 line 24/7 in natural conversation with live transcripts. Built for Baltimore teams that need real coverage, not phone trees.
⚡
Setup in 2 Minutes
Pick a 410 number, prompt your agent, and you're live in under two minutes. 6,000+ integrations including Salesforce and HubSpot wire in cleanly.
Brilo 2.0
410 FAQs
410 FAQs
Common questions Charm City businesses ask about getting a 410 line.
Common questions Charm City businesses ask about getting a 410 line.
Who uses area code 410?
Who uses area code 410?
Is 410 a toll-free number?
Is 410 a toll-free number?
Can I get a 410 number if my business isn't in Maryland?
Can I get a 410 number if my business isn't in Maryland?
What area code is 410 from?
What area code is 410 from?
Is a 410 number associated with spam?
Is a 410 number associated with spam?
How do I set up a 410 number with AI calling?
How do I set up a 410 number with AI calling?
What is the difference between 410 and 443?
What is the difference between 410 and 443?
Do I need to dial the area code for local calls within 410?
Do I need to dial the area code for local calls within 410?
Never Miss a Customer Call Again. Let AI Close the Loop—24/7.
Never Miss a Customer Call Again. Let AI Close the Loop—24/7.
Never Miss a Customer Call Again. Let AI Close the Loop—24/7.
Never Miss a Customer Call Again. Let AI Close the Loop—24/7.
Join 1,000+ businesses using Brilo to answer, qualify, and convert calls with AI—instantly.
Join 1,000+ businesses using Brilo to answer, qualify, and convert calls with AI—instantly.
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Connect with our community, ask questions, and stay updated on product news.
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Schedule a quick call with our team to explore solutions for your needs.
Get started
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Usecases
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Legal & Community