Largest Counties in New York

Rank County Population County Seat Established Area (km2) Density
1 Kings County 2,504,689 1683 251 9,978.84
2 Queens County 2,230,711 1683 462 4,828.38
3 New York County 1,585,862 1683 87 18,228.30
4 Suffolk County 1,493,339 Riverhead 1683 6,146 242.98
5 Bronx County 1,385,097 1914 149 9,295.95
6 Nassau County 1,339,521 Mineola 1899 1,173 1,141.96
7 Westchester County 949,102 White Plains 1683 1,295 732.9
8 Erie County 919,029 Buffalo 1821 3,178 289.18
9 Monroe County 744,333 Rochester 1821 3,538 210.38
10 Richmond County 468,719 1683 265 1,768.75
11 Onondaga County 467,015 Syracuse 1792 2,088 223.67
12 Orange County 372,802 Goshen 1683 2,173 171.56
13 Rockland County 311,676 New City 1798 515 605.2
14 Albany County 304,193 Albany 1683 1,380 220.43
15 Dutchess County 297,477 Poughkeepsie 1683 2,137 139.2
16 Oneida County 234,867 Utica 1798 3,142 74.75
17 Saratoga County 219,596 Ballston Spa 1791 2,186 100.46
18 Niagara County 216,458 Lockport 1808 2,953 73.3
19 Broome County 200,589 Binghamton 1806 1,852 108.31
20 Ulster County 182,482 Kingston 1683 3,007 60.69
21 Rensselaer County 159,418 Troy 1791 1,722 92.58
22 Schenectady County 154,716 Schenectady 1809 544 284.4
23 Chautauqua County 134,894 Mayville 1808 3,885 34.72
24 Oswego County 122,098 Oswego 1816 3,398 35.93
25 Jefferson County 116,218 Watertown 1805 4,810 24.16
26 St. Lawrence County 111,933 Canton 1802 7,306 15.32
27 Ontario County 107,920 Canandaigua 1789 1,715 62.93
28 Tompkins County 101,553 Ithaca 1817 1,233 82.36
29 Putnam County 99,699 Carmel Hamlet 1812 637 156.51
30 Steuben County 98,979 Bath 1796 3,636 27.22
31 Wayne County 93,761 Lyons 1823 3,585 26.15
32 Chemung County 88,819 Elmira 1836 1,064 83.48
33 Clinton County 82,117 Plattsburgh 1788 2,896 28.36
34 Cattaraugus County 80,306 Little Valley 1808 3,393 23.67
35 Cayuga County 80,015 Auburn 1799 2,238 35.75
36 Sullivan County 77,536 Monticello 1809 2,582 30.03
37 Madison County 73,431 Wampsville 1806 1,715 42.82
38 Warren County 65,696 Queensbury 1813 2,253 29.16
39 Livingston County 65,382 Geneseo 1821 1,658 39.43
40 Herkimer County 64,508 Herkimer 1791 3,776 17.08
41 Washington County 63,205 Fort Edward 1772 2,191 28.85
42 Columbia County 63,085 Hudson 1786 1,678 37.6
43 Otsego County 62,248 Cooperstown 1791 2,598 23.96
44 Genesee County 60,068 Batavia 1802 1,282 46.85
45 Fulton County 55,520 Johnstown 1838 1,380 40.23
46 Franklin County 51,588 Malone 1808 4,395 11.74
47 Tioga County 51,114 Owego 1791 1,355 37.72
48 Chenango County 50,466 Norwich 1798 2,328 21.68
49 Montgomery County 50,208 Fonda 1772 1,062 47.28
50 Cortland County 49,325 Cortland 1808 1,300 37.94
51 Greene County 49,210 Catskill 1800 1,704 28.88
52 Allegany County 48,935 Belmont 1806 2,678 18.27
53 Delaware County 47,969 Delhi 1797 3,802 12.62
54 Orleans County 42,872 Albion 1824 2,116 20.26
55 Wyoming County 42,144 Warsaw 1841 1,544 27.3
56 Essex County 39,359 Elizabethtown 1799 4,962 7.93
57 Seneca County 35,240 Waterloo 1804 842 41.85
58 Schoharie County 32,738 Schoharie 1795 1,621 20.2
59 Lewis County 27,076 Lowville 1805 3,341 8.1
60 Yates County 25,337 Penn Yan 1823 974 26.01
61 Schuyler County 18,332 Watkins Glen 1854 886 20.69
62 Hamilton County 4,825 Lake Pleasant 1816 4,683 1.03

Largest Counties in New York

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