240 area

This area code used across 11 counties and 70 cities. The area code is used in the state of Maryland.

Counties with "240" area code

  • Prince Georges
  • Saint Marys
  • Washington
  • Montgomery
  • Frederick
  • Charles
  • Garrett
  • Anne Arundel
  • Howard
  • Allegany
  • Calvert

Cities with "240" area code

  • Brentwood
  • Ridge
  • Hagerstown
  • Chevy Chase
  • Glen Echo
  • Bowie
  • Monrovia
  • Port Tobacco
  • Indian Head
  • Waldorf
  • Oakland
  • Charlotte Hall
  • Frederick
  • Nanjemoy
  • Poolesville
  • Rockville
  • Gaithersburg
  • Laurel
  • Hughesville
  • Issue
  • Callaway
  • Leonardtown
  • Bethesda
  • Brandywine
  • Cascade
  • Cheltenham
  • Great Mills
  • Laurel
  • Grantsville
  • Laurel
  • Silver Spring
  • Frostburg
  • Hancock
  • Thurmont
  • Temple Hills
  • Greenbelt
  • Andrews Air Force Base
  • Emmitsburg
  • District Heights
  • Columbia
  • Westernport
  • Highland
  • Clarksburg
  • Upper Marlboro
  • Ashton
  • Cumberland
  • Williamsport
  • Mount Airy
  • Odenton
  • Myersville
  • Ijamsville
  • Fort Washington
  • Middletown
  • Gambrills
  • Oldtown
  • Washington
  • Riverdale
  • College Park
  • Garrett
  • Takoma Park
  • Suitland
  • Patuxent River
  • Mount Rainier
  • Owings
  • Lonaconing
  • Luke
  • Smithsburg
  • Mount Savage
  • Elkridge
  • Knoxville

Exchange codes in the area

Exchange code City
240 - 200 Brentwood
240 - 201 Ridge
240 - 203 Hagerstown
240 - 204 Chevy Chase
240 - 205 Glen Echo
240 - 206 Bowie
240 - 207 Monrovia
240 - 208 Port Tobacco
240 - 209 Indian Head
240 - 210 Waldorf
240 - 212 Oakland
240 - 213 Waldorf
240 - 214 Charlotte Hall
240 - 215 Frederick
240 - 216 Waldorf
240 - 217 Hagerstown
240 - 218 Nanjemoy
240 - 219 Ridge
240 - 220 Poolesville
240 - 221 Rockville
240 - 222 Waldorf
240 - 223 Brentwood
240 - 224 Gaithersburg
240 - 225 Frederick
240 - 228 Laurel
240 - 229 Waldorf
240 - 230 Hughesville
240 - 231 Hagerstown
240 - 232 Brentwood
240 - 233 Issue
240 - 234 Brentwood
240 - 235 Chevy Chase
240 - 236 Frederick
240 - 237 Callaway
240 - 238 Rockville
240 - 239 Leonardtown
240 - 241 Bethesda
240 - 242 Bethesda
240 - 243 Gaithersburg
240 - 244 Bethesda
240 - 245 Bowie
240 - 246 Gaithersburg
240 - 247 Brentwood
240 - 248 Ridge
240 - 249 Charlotte Hall
240 - 250 Brandywine
240 - 251 Cascade
240 - 252 Gaithersburg
240 - 253 Cheltenham
240 - 254 Hughesville
240 - 255 Poolesville
240 - 256 Leonardtown
240 - 257 Nanjemoy
240 - 258 Ridge
240 - 260 Brentwood
240 - 261 Gaithersburg
240 - 262 Great Mills
240 - 263 Chevy Chase
240 - 264 Laurel
240 - 265 Chevy Chase
240 - 266 Brentwood
240 - 267 Hagerstown
240 - 268 Rockville
240 - 269 Brentwood
240 - 270 Waldorf
240 - 271 Chevy Chase
240 - 272 Chevy Chase
240 - 273 Brentwood
240 - 274 Chevy Chase
240 - 275 Grantsville
240 - 276 Rockville
240 - 277 Chevy Chase
240 - 278 Laurel
240 - 279 Waldorf
240 - 280 Laurel
240 - 281 Chevy Chase
240 - 282 Charlotte Hall
240 - 283 Silver Spring
240 - 284 Frostburg
240 - 285 Frederick
240 - 286 Chevy Chase
240 - 287 Hancock
240 - 288 Thurmont
240 - 289 Temple Hills
240 - 290 Brentwood
240 - 291 Hagerstown
240 - 292 Silver Spring
240 - 293 Brentwood
240 - 294 Laurel
240 - 295 Laurel
240 - 296 Brentwood
240 - 297 Greenbelt
240 - 298 Leonardtown
240 - 299 Waldorf
240 - 300 Waldorf
240 - 302 Laurel
240 - 303 Andrews Air Force Base
240 - 304 Brentwood
240 - 305 Laurel
240 - 306 Gaithersburg
240 - 307 Emmitsburg
240 - 308 Monrovia
240 - 309 Silver Spring
240 - 310 Hagerstown
240 - 312 District Heights
240 - 313 Hagerstown
240 - 314 Rockville
240 - 315 Frederick
240 - 316 Bethesda
240 - 317 Callaway
240 - 318 Andrews Air Force Base
240 - 319 Columbia
240 - 320 Waldorf
240 - 321 Oakland
240 - 322 Westernport
240 - 323 Emmitsburg
240 - 324 Highland
240 - 325 Clarksburg
240 - 326 Upper Marlboro
240 - 327 Gaithersburg
240 - 328 Rockville
240 - 329 Hagerstown
240 - 330 Glen Echo
240 - 331 Brentwood
240 - 332 Issue
240 - 333 Brentwood
240 - 334 Bowie
240 - 335 Bowie
240 - 336 Chevy Chase
240 - 337 Brentwood
240 - 338 Silver Spring
240 - 339 Upper Marlboro
240 - 340 Chevy Chase
240 - 341 Frederick
240 - 342 Ashton
240 - 343 Hancock
240 - 344 Frederick
240 - 345 Ashton
240 - 346 Waldorf
240 - 347 Hagerstown
240 - 348 Andrews Air Force Base
240 - 349 Port Tobacco
240 - 350 Laurel
240 - 351 Laurel
240 - 352 Port Tobacco
240 - 353 Laurel
240 - 354 Laurel
240 - 355 Laurel
240 - 356 Frederick
240 - 357 Frederick
240 - 358 Monrovia
240 - 359 Indian Head
240 - 360 Laurel
240 - 361 Gaithersburg
240 - 362 Cumberland
240 - 363 Silver Spring
240 - 364 Gaithersburg
240 - 365 Monrovia
240 - 366 Williamsport
240 - 367 Frederick
240 - 368 Waldorf
240 - 369 Mount Airy
240 - 370 Chevy Chase
240 - 371 Brentwood
240 - 372 Gaithersburg
240 - 373 Odenton
240 - 374 Laurel
240 - 375 District Heights
240 - 376 Hughesville
240 - 377 Indian Head
240 - 378 Cumberland
240 - 379 Frederick
240 - 380 Glen Echo
240 - 381 Silver Spring
240 - 382 Hagerstown
240 - 383 Bethesda
240 - 384 Callaway
240 - 385 Myersville
240 - 386 Gaithersburg
240 - 387 Bethesda
240 - 388 Gaithersburg
240 - 389 Ashton
240 - 390 Ashton
240 - 391 Greenbelt
240 - 392 Brentwood
240 - 393 Glen Echo
240 - 394 Mount Airy
240 - 395 Chevy Chase
240 - 396 Chevy Chase
240 - 397 Frederick
240 - 398 Glen Echo
240 - 399 Bethesda
240 - 400 Chevy Chase
240 - 401 Rockville
240 - 402 Greenbelt
240 - 403 Rockville
240 - 404 Gaithersburg
240 - 405 Frederick
240 - 406 Rockville
240 - 407 Cheltenham
240 - 408 Rockville
240 - 409 Frederick
240 - 412 Waldorf
240 - 413 Brentwood
240 - 414 Brentwood
240 - 415 Frederick
240 - 416 Waldorf
240 - 417 District Heights
240 - 418 Laurel
240 - 419 Waldorf
240 - 420 Hagerstown
240 - 421 Rockville
240 - 422 Frederick
240 - 423 Silver Spring
240 - 424 Brentwood
240 - 425 Glen Echo
240 - 426 Chevy Chase
240 - 427 Waldorf
240 - 428 Rockville
240 - 429 Silver Spring
240 - 430 Silver Spring
240 - 431 Great Mills
240 - 432 Laurel
240 - 433 Rockville
240 - 434 Leonardtown
240 - 435 Waldorf
240 - 436 Ijamsville
240 - 437 Ashton
240 - 438 Silver Spring
240 - 439 Frederick
240 - 440 Frederick
240 - 441 Temple Hills
240 - 442 Oakland
240 - 444 Laurel
240 - 445 Chevy Chase
240 - 446 Frederick
240 - 447 Rockville
240 - 448 Waldorf
240 - 449 Gaithersburg
240 - 450 Silver Spring
240 - 451 Thurmont
240 - 452 Hagerstown
240 - 453 Rockville
240 - 454 Gaithersburg
240 - 455 District Heights
240 - 456 Laurel
240 - 457 Frederick
240 - 458 Waldorf
240 - 459 Laurel
240 - 460 Silver Spring
240 - 461 Silver Spring
240 - 462 Laurel
240 - 463 Silver Spring
240 - 464 Chevy Chase
240 - 465 Brentwood
240 - 466 Charlotte Hall
240 - 467 Fort Washington
240 - 468 Brentwood
240 - 469 Hagerstown
240 - 470 Laurel
240 - 471 Rockville
240 - 472 Silver Spring
240 - 473 Greenbelt
240 - 474 Gaithersburg
240 - 475 Silver Spring
240 - 476 Silver Spring
240 - 477 Gaithersburg
240 - 478 Glen Echo
240 - 479 Fort Washington
240 - 480 Chevy Chase
240 - 481 Silver Spring
240 - 482 Glen Echo
240 - 483 Glen Echo
240 - 484 Laurel
240 - 485 Glen Echo
240 - 486 Bowie
240 - 487 Brentwood
240 - 488 Oakland
240 - 489 Poolesville
240 - 490 Middletown
240 - 491 Silver Spring
240 - 492 District Heights
240 - 493 Temple Hills
240 - 494 Brentwood
240 - 495 Brentwood
240 - 496 Leonardtown
240 - 497 Bethesda
240 - 498 Laurel
240 - 499 Glen Echo
240 - 500 Hagerstown
240 - 501 Silver Spring
240 - 502 Silver Spring
240 - 503 Issue
240 - 504 Silver Spring
240 - 505 Silver Spring
240 - 506 Rockville
240 - 507 Glen Echo
240 - 508 District Heights
240 - 509 Gambrills
240 - 510 Upper Marlboro
240 - 512 Greenbelt
240 - 513 Hagerstown
240 - 514 Glen Echo
240 - 515 Chevy Chase
240 - 516 Rockville
240 - 517 Columbia
240 - 518 Waldorf
240 - 519 Chevy Chase
240 - 520 Hagerstown
240 - 522 Cumberland
240 - 523 Port Tobacco
240 - 524 Laurel
240 - 525 Upper Marlboro
240 - 526 Leonardtown
240 - 527 Hagerstown
240 - 528 Hughesville
240 - 529 Frederick
240 - 530 Waldorf
240 - 531 Silver Spring
240 - 532 Brentwood
240 - 533 Brentwood
240 - 534 Chevy Chase
240 - 535 Silver Spring
240 - 536 Ashton
240 - 537 Hagerstown
240 - 538 Leonardtown
240 - 539 Brentwood
240 - 540 Columbia
240 - 541 Chevy Chase
240 - 542 Greenbelt
240 - 543 Chevy Chase
240 - 544 Bowie
240 - 545 Upper Marlboro
240 - 546 Andrews Air Force Base
240 - 547 Laurel
240 - 548 Brentwood
240 - 549 Frederick
240 - 550 Rockville
240 - 551 Rockville
240 - 552 Rockville
240 - 553 Brentwood
240 - 554 Laurel
240 - 556 Bowie
240 - 557 Brentwood
240 - 558 Silver Spring
240 - 559 Ashton
240 - 560 Bethesda
240 - 561 Leonardtown
240 - 562 Gaithersburg
240 - 563 District Heights
240 - 564 Columbia
240 - 565 Laurel
240 - 566 Frederick
240 - 567 Rockville
240 - 568 Laurel
240 - 569 Oldtown
240 - 570 Highland
240 - 572
240 - 573 Cheltenham
240 - 575 Frederick
240 - 576 Washington
240 - 577 Leonardtown
240 - 578 Frederick
240 - 580 Cumberland
240 - 581 Laurel
240 - 582 Riverdale
240 - 583 Laurel
240 - 585 Waldorf
240 - 586 Frederick
240 - 587 Leonardtown
240 - 592 Laurel
240 - 593 Laurel
240 - 595 Bethesda
240 - 597 Gaithersburg
240 - 599 Rockville
240 - 600 Brentwood
240 - 601 Laurel
240 - 602 Laurel
240 - 603 Laurel
240 - 604 Laurel
240 - 605 Laurel
240 - 606 Laurel
240 - 607 Cheltenham
240 - 608 Frederick
240 - 609 Cumberland
240 - 612 Brentwood
240 - 613 Brentwood
240 - 614 Rockville
240 - 615 Brentwood
240 - 616 Greenbelt
240 - 617 Hagerstown
240 - 618 Rockville
240 - 619 Bethesda
240 - 620 Rockville
240 - 621 Silver Spring
240 - 623 Brentwood
240 - 624 College Park
240 - 625 Hagerstown
240 - 626 Frederick
240 - 627 Silver Spring
240 - 629 Frederick
240 - 630 Brentwood
240 - 631 Gaithersburg
240 - 632 Gaithersburg
240 - 633 Hughesville
240 - 636 Laurel
240 - 638 Brentwood
240 - 640 Waldorf
240 - 641 Silver Spring
240 - 643 Silver Spring
240 - 644 Bethesda
240 - 645 Bethesda
240 - 646 Laurel
240 - 650 Glen Echo
240 - 651 Frederick
240 - 652 Charlotte Hall
240 - 654 Gaithersburg
240 - 655 Garrett
240 - 657 Frederick
240 - 660 Rockville
240 - 661 Callaway
240 - 662 Takoma Park
240 - 665 Glen Echo
240 - 666 Nanjemoy
240 - 667 Brentwood
240 - 668 Monrovia
240 - 669 Brentwood
240 - 670 Brentwood
240 - 671 Brentwood
240 - 672 Rockville
240 - 674 Frederick
240 - 675 Myersville
240 - 676 Silver Spring
240 - 678 Silver Spring
240 - 681 Brandywine
240 - 682 Waldorf
240 - 683 Gaithersburg
240 - 684 College Park
240 - 685 Cheltenham
240 - 686 Gaithersburg
240 - 687 Silver Spring
240 - 688 Silver Spring
240 - 690 Gaithersburg
240 - 691 Cheltenham
240 - 694 Bethesda
240 - 695 Suitland
240 - 696 Brentwood
240 - 699 Frederick
240 - 701 Silver Spring
240 - 702 Gaithersburg
240 - 704 Brentwood
240 - 705 Bethesda
240 - 706 Bethesda
240 - 707 Hagerstown
240 - 708 Columbia
240 - 712 Columbia
240 - 713 Laurel
240 - 714 Brentwood
240 - 715 Rockville
240 - 716 District Heights
240 - 718 Callaway
240 - 719 District Heights
240 - 720 Gaithersburg
240 - 722 Ashton
240 - 723 Silver Spring
240 - 724 Brentwood
240 - 725 Patuxent River
240 - 727 Cumberland
240 - 731 Rockville
240 - 732 Mount Airy
240 - 734 Hagerstown
240 - 737 Brentwood
240 - 740 Glen Echo
240 - 743 Glen Echo
240 - 744 Brentwood
240 - 745 Monrovia
240 - 747 Brentwood
240 - 750 Gaithersburg
240 - 751 Gaithersburg
240 - 752 Chevy Chase
240 - 753 Rockville
240 - 754 Waldorf
240 - 755 Laurel
240 - 757 Brentwood
240 - 758 Laurel
240 - 760 Mount Rainier
240 - 762 Brentwood
240 - 763 Owings
240 - 764 Bethesda
240 - 765 Bethesda
240 - 766 Bethesda
240 - 767 District Heights
240 - 770 Brentwood
240 - 771 Poolesville
240 - 772 Frederick
240 - 773 Rockville
240 - 774 Lonaconing
240 - 775 Luke
240 - 776 Port Tobacco
240 - 777 Rockville
240 - 778 Bethesda
240 - 779 Ashton
240 - 780 Gaithersburg
240 - 781 Mount Rainier
240 - 782 Monrovia
240 - 783 Chevy Chase
240 - 784 Myersville
240 - 786 Laurel
240 - 787 Brandywine
240 - 788 Brentwood
240 - 790 Brentwood
240 - 793 Gaithersburg
240 - 794 Callaway
240 - 800 Bethesda
240 - 801 Gaithersburg
240 - 802 Brentwood
240 - 803 Cumberland
240 - 804 Issue
240 - 805 Gaithersburg
240 - 806 Indian Head
240 - 808 Leonardtown
240 - 810 Glen Echo
240 - 812 Poolesville
240 - 813 Gaithersburg
240 - 815 Frederick
240 - 816 Hagerstown
240 - 817 Ashton
240 - 818 Smithsburg
240 - 821 Silver Spring
240 - 823 Brandywine
240 - 825 Brentwood
240 - 826 Rockville
240 - 828 Brentwood
240 - 830 District Heights
240 - 831 Frederick
240 - 832 Chevy Chase
240 - 833 Bethesda
240 - 837 Hughesville
240 - 838 District Heights
240 - 839 Bethesda
240 - 841 Laurel
240 - 842 Bowie
240 - 843 Greenbelt
240 - 844 Ridge
240 - 845 Bethesda
240 - 846 Andrews Air Force Base
240 - 847 Glen Echo
240 - 848 Gaithersburg
240 - 850 Hagerstown
240 - 855 Glen Echo
240 - 856 Columbia
240 - 857 Brentwood
240 - 858 Chevy Chase
240 - 859 Highland
240 - 860 Cumberland
240 - 862 Mount Savage
240 - 863 Laurel
240 - 864 Rockville
240 - 865 Elkridge
240 - 867 Silver Spring
240 - 868 Brentwood
240 - 870 Frederick
240 - 876 Chevy Chase
240 - 877 Frederick
240 - 878 Hagerstown
240 - 880 Bethesda
240 - 882 District Heights
240 - 883 Ashton
240 - 888 Rockville
240 - 892 Upper Marlboro
240 - 893 Silver Spring
240 - 895 Patuxent River
240 - 897 Brentwood
240 - 898 Brentwood
240 - 899 Chevy Chase
240 - 900 Brentwood
240 - 901 Port Tobacco
240 - 903 Indian Head
240 - 904 Columbia
240 - 906 Brentwood
240 - 907 Rockville
240 - 908 Frederick
240 - 912 Gaithersburg
240 - 913 Frederick
240 - 915 Frederick
240 - 917 Laurel
240 - 918 Ashton
240 - 920 Cumberland
240 - 925 Leonardtown
240 - 929 Brentwood
240 - 938 Ashton
240 - 949 Brentwood
240 - 964 Cumberland
240 - 965 Greenbelt
240 - 970 Rockville
240 - 971 Frederick
240 - 972 Columbia
240 - 976
240 - 979 Cumberland
240 - 985 Williamsport
240 - 986 Nanjemoy
240 - 988 Laurel
240 - 993 Indian Head
240 - 994 Rockville
240 - 996 Knoxville
240 - 997 Silver Spring
240 - 998 Hancock