| Zip Code | City | Population ↓ |
|---|---|---|
| 12401 | Kingston | 35,138 |
| 12589 | Wallkill | 19,584 |
| 12477 | Saugerties | 18,557 |
| 12561 | New Paltz | 18,136 |
| 12528 | Highland | 13,358 |
| 12566 | Pine Bush | 12,407 |
| 12428 | Ellenville | 7,032 |
| 12542 | Marlboro | 5,490 |
| 12446 | Kerhonkson | 4,894 |
| 12498 | Woodstock | 4,580 |
| 12487 | Ulster Park | 3,935 |
| 12404 | Accord | 3,864 |
| 12443 | Hurley | 3,582 |
| 12458 | Napanoch | 3,501 |
| 12484 | Stone Ridge | 3,373 |
| 12547 | Milton | 3,277 |
| 12449 | Lake Katrine | 3,193 |
| 12466 | Port Ewen | 2,070 |
| 12491 | West Hurley | 2,059 |
| 12486 | Tillson | 1,760 |
| 12525 | Gardiner | 1,739 |
| 12740 | Grahamsville | 1,695 |
| 12515 | Clintondale | 1,567 |
| 12440 | High Falls | 1,493 |
| 12481 | Shokan | 1,493 |
| 12461 | Olivebridge | 1,371 |
| 12457 | Mount Tremper | 1,283 |
| 12472 | Rosendale | 1,177 |
| 12464 | Phoenicia | 1,093 |
| 12548 | Modena | 1,074 |
| 12409 | Bearsville | 958 |
| 12419 | Cottekill | 881 |
| 12417 | Connelly | 873 |
| 12494 | West Shokan | 865 |
| 12456 | Mount Marion | 728 |
| 12433 | Glenford | 628 |
| 12406 | Arkville | 590 |
| 12432 | Glasco | 581 |
| 12412 | Boiceville | 537 |
| 12475 | Ruby | 460 |
| 12465 | Pine Hill | 384 |
| 12411 | Bloomington | 377 |
| 12420 | Cragsmoor | 351 |
| 12410 | Big Indian | 329 |
| 12493 | West Park | 324 |
| 12725 | Claryville | 323 |
| 12471 | Rifton | 268 |
| 12453 | Malden On Hudson | 240 |
| 12435 | Greenfield Park | 231 |
| 12416 | Chichester | 205 |
| 12489 | Wawarsing | 154 |
| 12429 | Esopus | 153 |
| 12448 | Lake Hill | 142 |
| 12495 | Willow | 87 |
| 12490 | West Camp | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 55 ZCTAs in Ulster County, New York (US Census).