Want to know about the largest to smallest counties in New York, USA in terms of total land area? Check this resource New York counties by land area to discover all the details regarding county map (boundary), and nearby counties.
On the other hand, check New York counties by population and New York cities by population to know more about city and county based demographic details.
What is the largest county in New York by land area?
St. Lawrence County is the largest county in New York spanning 2679.53 square miles, with an additional 141.68 square miles of water area. Following St. Lawrence County, Essex County ranks as the second largest in terms of land area, covering 1794.12 square miles, while Hamilton County secures the position as the third largest county in New York.
What is the smallest county by land area in New York?
New York County is the smallest in New York by total land area, covers about 22.66 square miles.
What is the largest county by population in New York?
Kings County in New York, USA, stands as the most populous county having 2,736,074 residents as per the 2022 census data.
What is the smallest county by population in New York?
Hamilton County is the smallest in New York by total population, having 5,107 residents as per the 2022 census data.
New York Counties by Size
Rank
| County
in New York | Land Area
square miles | Water Area
square miles | Total Area
square miles |
|---|
| 1 | St. Lawrence County | 2,680 | 142 | 2,821 |
| 2 | Essex County | 1,794 | 122 | 1,916 |
| 3 | Hamilton County | 1,717 | 90 | 1,808 |
| 4 | Franklin County | 1,629 | 68 | 1,697 |
| 5 | Delaware County | 1,443 | 25 | 1,467 |
| 6 | Herkimer County | 1,411 | 46 | 1,457 |
| 7 | Steuben County | 1,391 | 14 | 1,404 |
| 8 | Cattaraugus County | 1,308 | 14 | 1,322 |
| 9 | Lewis County | 1,276 | 15 | 1,292 |
| 10 | Jefferson County | 1,268 | 589 | 1,857 |
| 11 | Oneida County | 1,212 | 45 | 1,258 |
| 12 | Ulster County | 1,124 | 37 | 1,161 |
| 13 | Erie County | 1,043 | 184 | 1,227 |
| 14 | Clinton County | 1,038 | 80 | 1,118 |
| 15 | Allegany County | 1,030 | 5 | 1,035 |
| 16 | Otsego County | 1,002 | 14 | 1,016 |
| 17 | Sullivan County | 968 | 28 | 997 |
| 18 | Oswego County | 952 | 360 | 1,312 |
| 19 | Suffolk County | 911 | 1,462 | 2,373 |
| 20 | Chenango County | 893 | 5 | 899 |
| 21 | Warren County | 867 | 64 | 932 |
| 22 | Washington County | 831 | 15 | 846 |
| 23 | Orange County | 812 | 26 | 838 |
| 24 | Saratoga County | 810 | 34 | 844 |
| 25 | Dutchess County | 796 | 30 | 825 |
| 26 | Onondaga County | 778 | 27 | 806 |
| 27 | Broome County | 706 | 10 | 715 |
| 28 | Cayuga County | 692 | 172 | 864 |
| 29 | Monroe County | 657 | 710 | 1,367 |
| 30 | Madison County | 655 | 6 | 661 |
| 31 | Rensselaer County | 652 | 13 | 665 |
| 32 | Greene County | 647 | 11 | 658 |
| 33 | Ontario County | 644 | 18 | 663 |
| 34 | Columbia County | 635 | 14 | 648 |
| 35 | Livingston County | 632 | 9 | 640 |
| 36 | Schoharie County | 622 | 5 | 626 |
| 37 | Wayne County | 604 | 779 | 1,383 |
| 38 | Wyoming County | 593 | 4 | 596 |
| 39 | Albany County | 523 | 10 | 533 |
| 40 | Niagara County | 522 | 617 | 1,140 |
| 41 | Tioga County | 519 | 4 | 523 |
| 42 | Cortland County | 499 | 3 | 502 |
| 43 | Fulton County | 495 | 37 | 533 |
| 44 | Genesee County | 493 | 2 | 495 |
| 45 | Tompkins County | 475 | 17 | 492 |
| 46 | Westchester County | 431 | 69 | 500 |
| 47 | Chemung County | 407 | 3 | 411 |
| 48 | Montgomery County | 403 | 7 | 410 |
| 49 | Orleans County | 391 | 426 | 817 |
| 50 | Yates County | 338 | 38 | 376 |
| 51 | Schuyler County | 328 | 14 | 342 |
| 52 | Seneca County | 324 | 67 | 390 |
| 53 | Nassau County | 285 | 169 | 453 |
| 54 | Putnam County | 230 | 16 | 246 |
| 55 | Schenectady County | 205 | 5 | 209 |
| 56 | Rockland County | 174 | 26 | 200 |
| 57 | Queens County | 109 | 73 | 181 |
| 58 | Kings County | 69 | 27 | 97 |
| 59 | Richmond County | 58 | 45 | 103 |
| 60 | Bronx County | 42 | 15 | 57 |
| 61 | New York County | 23 | 11 | 34 |
