A 617 reads Boston insider
Restricted to inner Boston since 1997, 617 carries serious city credibility — distinct from the suburban 781 and 339 overlays.
Get a 617 Boston, 781 inner suburbs, 508 Worcester/Cape Cod, 978 north, 413 western MA or any of Massachusetts's 9 area codes on the phone you already own. The Bay State's full prefix map — pick the code your customers will recognise.
Massachusetts has 9 active area codes — 617, 857, 781 and 6 more. You can get a virtual Massachusetts phone number from any of these area codes through CallMama without a US address or SIM card.
Massachusetts received a single area code in 1947: 617, covering the entire state. 413 was carved off in 1957 for Springfield and the western half across the Berkshires.
The 1988 split moved Worcester, the South Shore and Cape Cod to a new 508 code. In 1997, 781 split from 617 for the inner Boston suburbs (Cambridge, Newton, Quincy), leaving 617 confined to Boston proper. 978 split from 508 that year for Lowell, Lawrence and the north.
Overlays followed as Boston's tech and biotech sectors exploded: 857 (over 617, 2001), 339 (over 781, 2001), 774 (over 508, 2001) and 351 (over 978, 2001). Boston now uses two overlapping codes (617/857) restricted to the city core.
Massachusetts's 617 has been restricted to inner Boston since 1997, making it one of only four US area codes confined to a major city's core (alongside Manhattan's 212 covering Manhattan only, San Francisco's 415 covering SF city, and Chicago's 312 restricted to downtown). All four became cultural prestige markers for their cities.
Every Massachusetts area code plotted at its primary city. Click any marker for that code's details. Overlays share geography with their parent code — they're shown offset on the map for visibility.
Every Massachusetts metro covered by a different prefix. Open any card to view its full detail page.
Find your city, find its area code, then activate a number with that prefix.
A local Massachusetts prefix outperforms an out-of-state cell at every customer touchpoint.
Restricted to inner Boston since 1997, 617 carries serious city credibility — distinct from the suburban 781 and 339 overlays.
A 508 prefix bridges central MA (Worcester, Framingham) and the Cape (Hyannis, Falmouth, Provincetown) — useful for businesses serving both year-round and summer markets.
Springfield, Northampton, the Berkshires and the Pioneer Valley all use 413. A 413 prefix tells western MA clients you're local — not a Boston transplant.
Selling across the state? Add 617/781/508/413 lines on one account. Each ring separately — Boston biotech, Worcester manufacturing and Springfield service in one device.
Boston sits on the same trading clock as New York. An MA prefix tells finance, VC and tech clients you're reachable on their schedule.
Cancel service and your Massachusetts number is reserved free for 12 months — keep your 617 across academic appointments and consulting moves.
Each Massachusetts area code covers a distinct region. Here's how the population breaks down.
Source: US Census Bureau / ACS estimates.
Pick the digits, install the app, take the first call. That's the whole sequence.
CallMama generates 10–20 available numbers in any Massachusetts area code. Vanity patterns supported.
Install CallMama on the device you already use. Sign in once — your Massachusetts number is linked.
Inbound and outbound on the same device. Local Massachusetts caller ID on every outgoing call.
Search by state, city, or number — then click any code to open its detail page. Massachusetts is in here too.
| State | Area Codes | Time Zone | Count |
|---|---|---|---|
| Alabama | 205251256334659938 | CT | 6 |
| Alaska | 907 | AKT | 1 |
| Arizona | 480520602623928 | MST | 5 |
| Arkansas | 479501870 | CT | 3 |
| California | 213310408415510619650714818916 | PT | 10 |
| Colorado | 303719720970 | MT | 4 |
| Connecticut | 203475860959 | ET | 4 |
| Delaware | 302 | ET | 1 |
| District of Columbia | 202 | ET | 1 |
| Florida | 239305321407561727786813850904954 | ET* | 11 |
| Georgia | 229404470478678706762770912 | ET | 9 |
| Hawaii | 808 | HST | 1 |
| Idaho | 208986 | MT* | 2 |
| Illinois | 217224309312331618630708773779815847872 | CT | 13 |
| Indiana | 219260317463574765812930 | ET* | 8 |
| Iowa | 319515563641712 | CT | 5 |
| Kansas | 316620785913 | CT* | 4 |
| Kentucky | 270364502606859 | ET* | 5 |
| Louisiana | 225318337504985 | CT | 5 |
| Maine | 207 | ET | 1 |
| Maryland | 240301410443667 | ET | 5 |
| Massachusetts | 339351413508617774781857978 | ET | 9 |
| Michigan | 231248269313517586616734810906947989 | ET* | 12 |
| Minnesota | 218320507612651763952 | CT | 7 |
| Mississippi | 228601662769 | CT | 4 |
| Missouri | 314417573636660816 | CT | 6 |
| Montana | 406 | MT | 1 |
| Nebraska | 308402531 | CT* | 3 |
| Nevada | 702725775 | PT | 3 |
| New Hampshire | 603 | ET | 1 |
| New Jersey | 201551609732848856862908973 | ET | 9 |
| New Mexico | 505575 | MT | 2 |
| New York | 212315332347516518585607631646680716718838845914917929934 | ET | 19 |
| North Carolina | 252336704743828910919980984 | ET | 9 |
| North Dakota | 701 | CT* | 1 |
| Ohio | 216234330380419440513567614740937 | ET | 11 |
| Oklahoma | 405539580918 | CT | 4 |
| Oregon | 458503541971 | PT* | 4 |
| Pennsylvania | 215267272412445484570610717724814878 | ET | 12 |
| Rhode Island | 401 | ET | 1 |
| South Carolina | 803843854864 | ET | 4 |
| South Dakota | 605 | CT* | 1 |
| Tennessee | 423615629731865901931 | CT* | 7 |
| Texas | 210214254281325346361409430432469512682713737806817830832903 | CT* | 20 |
| Utah | 385435801 | MT | 3 |
| Vermont | 802 | ET | 1 |
| Virginia | 276434540571703757804 | ET | 7 |
| Washington | 206253360425509564 | PT | 6 |
| West Virginia | 304681 | ET | 2 |
| Wisconsin | 262414534608715920 | CT | 6 |
| Wyoming | 307 | MT | 1 |
| Puerto Rico | 787939 | AST | 2 |
One tap to install. One more to call. It really is that simple.