Addresses on 21st in Gary Indiana
- 25-31 E 21st Ave
- 120 E 21st Ave
- 124-28 E 21st Ave
- 200 E 21st Ave
- 205 E 21st Ave
- 221 W 21st Ave
- 226 E 21st Ave
- 290 W 21st Ave
- 300 W 21st Ave
- 308 E 21st Ave
- 400 E 21st Ave
- 400 E 21st Pl
- 407-99 W 21st Ave
- 407 E 21st Pl
- 408 E 21st Ave
- 409 E 21st Pl
- 412 E 21st Ave
- 413 E 21st Pl
- 415 E 21st Pl
- 416 E 21st Ave
- 417 E 21st Pl
- 418 E 21st Pl
- 419 E 21st Pl
- 420 E 21st Ave
- 421 E 21st Pl
- 423 E 21st Pl
- 424 E 21st Ave
- 425 E 21st Pl
- 427 E 21st Ave
- 427 E 21st Pl
- 428 E 21st Ave
- 429 E 21st Pl
- 431 W 21st Ave
- 431 E 21st Pl
- 433 E 21st Pl
- 443 W 21st Ave
- 443 E 21st Pl
- 445 E 21st Pl
- 447 E 21st Pl
- 448 W 21st Ave
- 450 W 21st Ave
- 475-77 W 21st Ave
- 479-81 W 21st Ave
- 483-85 W 21st Ave
- 500-02 E 21st
- 500 W 21st Ave
- 501 E 21st Ave
- 501 E 21st Pl
- 503 E 21st Pl
- 503 E 21st Ave
- 504-06 E 21st Ave
- 505 E 21st Ave
- 507 W 21st Ave
- 507 E 21st Pl
- 507 E 21st Ave
- 508 E 21st Ave
- 509 E 21st Pl
- 510 E 21st Pl
- 511 E 21st Pl
- 512 E 21st Ave
- 512 E 21st Pl
- 514 W 21st Ave
- 517 E 21st Pl
- 519 E 21st Pl
- 520 E 21st Pl
- 521 W 21st Ave
- 521 E 21st Pl
- 522 E 21st Pl
- 523 E 21st Pl
- 524 E 21st Pl
- 526 E 21st Pl
- 527 E 21st Pl
- 529 E 21st Pl
- 530 W 21st Ave
- 530 E 21st Pl
- 531 E 21st Pl
- 540 W 21st Ave
- 542 E 21st Pl
- 543 E 21st Pl
- 544 E 21st Pl
- 545 E 21st Pl
- 546 E 21st Pl
- 547 E 21st Pl
- 549 W 21st Ave
- 551 W 21st Ave
- 555 W 21st Ave
- 559 W 21st Ave
- 569 W 21st Ave
- 571 W 21st Ave
- 589 W 21st Ave
- 595 W 21st Ave
- 597 W 21st Ave
- 600 E 21st Ave
- 600 W 21st Ave
- 604-10 E 21st Ave
- 612 E 21st Ave
- 612 W 21st Ave
- 626 W 21st Ave
- 634 E 21st Ave
- 700 E 21st Ave
- 700 E 21st Ave
- 709 E 21st Ave