快速回答: 512 區號涵蓋 奧斯汀和德克薩斯州中部 — 奧斯汀本身以及周圍的內環郊區(Round Rock、Cedar Park、Pflugerville、Georgetown、Leander)和德克薩斯州中心外城鎮(San Marcos、Bastrop、Lockhart、Lakeway、Buda、Kyle)。自此以來它一直是奧斯汀的區號 1947, 坐在 中部時間,並與 第737章 覆蓋 (2013 年 10 月新增)。 需要撥打 10 位數字 對於每個本地電話。
512 區號是多少?
來電顯示上的 512 號碼可讓您進入 奧斯汀地鐵 — 奧斯汀市本身或其德州中部郊區之一。奧斯汀的人口從 1980 年的 25 萬大學城激增到如今的美國第 11 大城市(約 97.5 萬),而 512 一直是奧斯汀的名片。
本指南來自 My Country Mobile (MCM),這是一家在美國各地發行本地號碼的虛擬電話提供者。
512 到達的地方-靶心處的奧斯汀
512 的足跡自然地分為三個同心圓環:
地鐵核心:奧斯汀本身(~975,000)
美國第 11 大城市。德州首府。 UT 奧斯汀分校的主校區。技術中心(蘋果、戴爾、特斯拉、Indeed、Google、Meta)。世界現場音樂之都。南方國會。東奧斯汀。市中心。
內環:郊區(合計約 70 萬+)
奧斯汀北部和南部的密集郊區帶:
- 圓石 (~133,000) — 戴爾總部的故鄉。奧斯汀最大的郊區。
- 雪松公園 (~80,000) — 西北郊區,快速成長。
- 普夫魯格維爾 (~70,000) — 北郊,以家庭為中心。
- 喬治城 (~80,000) — 威廉森縣城。西南大學.
- 利安德 (~75,000) — 西北遠郊。
- 凱爾 (~57,000) — 35 號州際公路南郊。
- 布達 (~17,000) — 奧斯汀與凱爾之間的小鎮。
- 胡托 (~37,000) — 東北郊區。
外環:德州中部城鎮
仍在 512 上的更遠的傳送帶:
- 聖馬科斯 (~70,000) — 德州州立大學。沿著 35 號州際公路前往聖安東尼奧。
- 巴斯特羅普 (~12,000) — 奧斯汀以東的科羅拉多河小鎮。
- 洛克哈特 (~14,000) — 德州燒烤之都。考德威爾縣城。
- 萊克威 (~17,000) — 崔維斯湖富裕郊區。
- 蜜蜂洞 (~10,000) — 奧斯汀以西,靠近崔維斯湖。
- 滴泉 — 丘陵地區的婚禮舉辦地點。
| 細節 | 512 區號 |
|---|---|
| 狀態 | 德州 |
| 地區 | 奧斯汀地鐵 + 德州中部 |
| 主要城市 | 奧斯汀、朗德羅克、雪松公園、普弗拉格維爾、喬治敦、聖馬科斯 |
| 服務縣 | 特拉維斯、威廉森、海斯、巴斯特羅普、考德威爾 + 部分附近縣 |
| 疊加程式碼 | 737 (2013年起) |
| Time zone | Central (CT) |
| In service since | 1947 |
一個代碼 66 年——然後 737 加入了奧斯汀的錢包
Austin held out on a single area code for 66 years before adding an overlay — one of the longer single-code runs among major Texas metros.
1947: 512 launches
When the NANP went live in 1947, 512 was assigned to a huge swath of South Texas — Austin, San Antonio, Corpus Christi, and the Rio Grande Valley.
Over the next few decades, splits chipped it down: 512 lost San Antonio (became 210 in 1992), Corpus Christi (became 361 in 1999), and other South Texas pieces.
By 2000, 512 had shrunk to just Austin + central TX.
October 2013: 737 overlay added
Even with the smaller footprint, the Austin tech boom pushed 512 toward exhaustion. On October 5, 2013, the Texas PUC layered 737 as an overlay on top of 512. Same exact territory, second pool of numbers, 10-digit dialing became mandatory at the same time.
What it means for you
- Existing 512 numbers stayed 512. Nobody renumbered.
- New numbers issued since 2013 can come from either pool — 512 or 737.
- A 737 number is not "lesser" than 512 — they cover identical Austin metro geography.
- 10-digit dialing is mandatory 對於每個本地電話。
Ready when you are
Protect your business line.
MCM's local numbers ship with verified caller ID and smart call filtering — customers always know it's really you, and spam never reaches your team.
512 區號的工作原理
Dialing rules:
| Calling from | Dial |
|---|---|
| Inside the US / Canada | 512 XXX XXXX (10-digit dialing is mandatory) |
With a leading 1 | 1 512 XXX XXXX |
| Outside North America | +1 512 XXX XXXX |
| Any mobile (worldwide) | +1 512 XXX XXXX |
512時區
512 runs on 中部時間 — the same clock as Dallas, Houston, Chicago, and Mexico City.
- Central Standard Time (CST): UTC−6 (winter)
- Central Daylight Time (CDT): UTC−5 (summer)
Reference clock — when it's 12:00 PM in 512 (Austin):
| City | Time |
|---|---|
| New York | 1:00 PM |
| Denver | 11:00 AM |
| Los Angeles | 10:00 AM |
| London | 6:00 PM |
| Berlin | 7:00 PM |
| Mumbai | 10:30 PM |
為什麼 512 號碼對您的業務有幫助
A 512 line tells an Austin tech founder, a Round Rock manufacturer, or a San Marcos venue that you're part of the central Texas community.
- Higher pickup rates on outbound. Austinites recognize 512 as local and answer.
- Geo-targeted ads land harder when the call-back is local. A 512 on a billboard reads as a neighbor.
- Vanity numbers double as marketing —
512-AUSTIN,512-MUSIC,512-TX,512-TACOS.
And because it's a virtual number, you can hold a 512 line while based anywhere with internet.
如何獲得 512 電話號碼
Five taps, about five minutes start-to-call.
- Sign up — Open a free MCM account. No card needed to browse.
- Search 512 — Filter live inventory by area code 512 (or 737).
- Pick a number — Standard or vanity (e.g.
512-AUSTIN,512-MUSIC,512-TACOS). - Pick a plan — Seat count + features. From $12 / user / month.
- Go live — Activate, route to cell / desk phone / softphone, take your first call.
Porting an existing 512 number runs 5–10 business days in the background while you stay live on a temporary number.
512 區號中的郵遞區號
The 512 / 737 region overlaps with roughly 160+ ZIP codes across central TX. A sample by city:
| City | ZIP codes |
|---|---|
| Austin | 78701 — 78799 (range) |
| 圓石 | 78664, 78665, 78681 |
| 雪松公園 | 78613 |
| 普夫魯格維爾 | 78660, 78664 |
| 喬治城 | 78626, 78628, 78633 |
| 利安德 | 78641, 78645 |
| 胡托 | 78634 |
| 凱爾 | 78640 |
| 布達 | 78610 |
| 萊克威 | 78734 |
| 蜜蜂洞 | 78738 |
| 聖馬科斯 | 78666 |
| 巴斯特羅普 | 78602 |
| 洛克哈特 | 78644 |
| 滴泉 | 78620 |
(Source: USPS ZIP code data and Public Utility Commission of Texas records.)
Ready when you are
Ready to sound local everywhere you sell?
MCM activates business numbers in minutes, with call routing, analytics, and CRM-ready integrations. Start your free trial — no card to browse inventory.
有關 512 區號的常見問題
Where is the 512 area code located?
Austin and central Texas — including Austin itself, the surrounding inner-ring suburbs (Round Rock, Cedar Park, Pflugerville, Georgetown, Leander), and the outer central-Texas towns (San Marcos, Bastrop, Lockhart, Lakeway).
What is the difference between 512 and 737?
None geographically — both cover the same Austin metro territory. 512 is the original code (1947); 737 was added as an overlay in October 2013.
Why do I have to dial 10 digits for local 512 calls?
Because 512 and 737 share one region, the network needs the full 10-digit number to route correctly. 10-digit dialing became mandatory in 2013.
Does 512 cover San Antonio or Houston?
No. San Antonio uses 210 / 726; Houston uses 713 / 281 / 832 / 346. 512 covers only Austin and central Texas.
Do I need to live in Texas to get a 512 number?
No. A virtual phone number lets you hold a 512 number from anywhere and forward calls to any device.
Is a 512 number toll-free?
No. It's a standard local geographic number for the Austin metro region.
What time zone is the 512 area code in?
Central Time. CST (UTC−6) in winter, CDT (UTC−5) in summer.
How quickly can I get a 512 phone number?
With a virtual provider, often the same day. Porting an existing 512 number takes 5–10 business days.
Can I pick a vanity 512 number?
Often, yes. Examples: 512-AUSTIN, 512-MUSIC, 512-TACOS, 512-TX.






