205 Area Code: Location, Cities, Time Zone & Phone Lookup
Where the 205 area code is used, which cities and counties it covers in Alabama, its time zone, overlay codes and the exact dialing format.
Quick answer
Free reference, no signup. Data reviewed against NANPA records.
- Location
- Birmingham, AL
- Country
- United States
- Time zone
- Central Time (CT)
- In service
- Since 1947
- Code type
- Original 1947 code
- Local format
- (205) 555-0123
- Population served
- ≈ 1,400,000 residents
- Service span
- 79 years
Where Is the 205 Area Code?
The 205 area code is a geographic numbering plan area in the North American Numbering Plan.
The 205 area code is assigned to Birmingham, the anchor city of the region, together with the surrounding communities listed below. When the 205 area code was introduced, regulators drew its boundary around the calling communities that shared a local calling area, which is why the territory follows county lines rather than city limits.
In everyday terms, if you see the 205 area code on an incoming call, the number was originally assigned in the Birmingham area of Alabama. Landlines, mobile phones and business lines in that territory can all carry the 205 area code.
The cities below are the principal municipalities served by the 205 area code. County names are included because numbering plan boundaries in Alabama traditionally follow county lines.
Top cities at a glance
- BirminghamJefferson County
- TuscaloosaTuscaloosa County
- HooverJefferson / Shelby County
- BessemerJefferson County
- AlabasterShelby County
Full city and county list for the 205 area code below.
205 Area Code Cities and Counties
Major cities covered by the 205 area code, including Birmingham, Tuscaloosa, Hoover and more.
The 205 area code covers the communities in the table below. Together they form the local calling community for Birmingham, the primary city of the numbering plan area in Alabama.
| City | County |
|---|---|
| Birmingham | Jefferson County |
| Tuscaloosa | Tuscaloosa County |
| Hoover | Jefferson / Shelby County |
| Bessemer | Jefferson County |
| Alabaster | Shelby County |
| Helena | Shelby County |
| Jasper | Walker County |
| Pell City | St. Clair County |
City and county coverage reflects published numbering plan boundaries; individual carriers may assign numbers slightly differently within the territory.
If you are calling any of these cities from outside North America, prefix the 205 area code number with the US/Canada country code +1. Numbers are ten digits long: three for the area code plus seven for the line.
205 Area Code Time Zone
The 205 area code observes Central Time (CT), the same clock as Birmingham.
Communities in the 205 area code follow Central Time: UTC−6 / UTC−5 with daylight saving time in effect from the second Sunday of March to the first Sunday of November. When scheduling a call into the 205 area code territory from Europe or Asia, check both clocks first.
A quick reference: when it is 12:00 noon in the 205 area code, it is 17:00 in London and 01:00 the next day in Tokyo during standard time. The 205 area code shares its clock with the rest of its region.
How to Dial a 205 Area Code Number
Ten digits for local calls, +1 for international calls.
Every number in the 205 area code follows the North American format: a three-digit area code plus a seven-digit local number. From inside the US or Canada, dial 1, then the 205 area code, then the seven digits — for example (205) 555-0123. In overlay regions, the ten-digit form is required even for next-door calls.
From abroad, replace the leading 1 with your international exit code and add the country code: +1 205 555 0123. Mobile phones in most countries let you store the number with the + sign so the 205 area code number dials correctly from anywhere.
Dialing format
Local / national
(205) 555-0123
International
+1 205 555 0123
555 numbers are reserved for examples; real 205 area code lines use working exchange prefixes.
Who Is Calling From the 205 Area Code?
What the 205 area code does — and does not — tell you about a caller.
A call from the 205 area code most often comes from a person or business in the Birmingham area of Alabama. The 205 area code is used by ordinary households, government offices and companies across the territory, so the code alone is not a sign of spam.
However, the 205 area code cannot prove where a caller physically is. Number portability lets a customer keep a 205 area code number after moving away, and internet calling services can assign 205 area code numbers to users anywhere in the world. Scammers can also display a fake 205 area code through caller-ID spoofing.
The safe rule: treat the 205 area code as a hint about the number's origin, never as caller verification. Let unfamiliar calls go to voicemail, and contact organizations through official numbers rather than ones that called you.
205 Area Code History
How the 205 area code came to serve Alabama.
The 205 area code is one of the original area codes created in 1947 for the Bell System's nationwide numbering plan, making it one of the longest-serving codes in the country. Regulators have since pared its territory down as demand for numbers grew, leaving the 205 area code centered on Birmingham.
Demand for telephone numbers keeps growing because every mobile line, fax machine and internet phone needs one. When a numbering plan area approaches exhaustion, regulators either split the territory or overlay a new code on top of it — which is why the 205 area code boundary looks the way it does today.
205 Area Code Overlays and Neighbors
Codes that share territory with the 205 area code or border its region.
FAQ
205 Area Code FAQ
The most common questions about the 205 area code, answered briefly.
Data sources: NANPA (North American Numbering Plan Administration) numbering plans and public regulator announcements. Reviewed October 2026. Lookup results describe number assignment areas and cannot be used to infer the true location of a caller.
By the Area Code Lookup editorial team ·
Sources & citations
- NANPA — North American Numbering Plan Administrationwww.nationalnanpa.com
- List of North American Numbering Plan area codes (Wikipedia)en.wikipedia.org
- Local Calling Guide — NANP prefix databasewww.localcallingguide.com
Every guide on this site is verified against these sources and carries its own review date. Lookup results describe number assignment areas and never prove where a caller is located.
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