| County | Rank | Change (2020) ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Rockland County | 1 | 6.06% | 357,812 | 337,378 |
| Tompkins County | 2 | 6.03% | 105,796 | 99,778 |
| Orange County | 3 | 4.35% | 418,447 | 400,997 |
| Schenectady County | 4 | 4.23% | 166,027 | 159,294 |
| Otsego County | 5 | 3.71% | 60,534 | 58,366 |
| Sullivan County | 6 | 3.19% | 80,970 | 78,465 |
| Saratoga County | 7 | 3.19% | 243,334 | 235,811 |
| Albany County | 8 | 3.14% | 323,892 | 314,024 |
| Franklin County | 9 | 3.09% | 48,706 | 47,248 |
| Dutchess County | 10 | 2.54% | 303,441 | 295,913 |
| Westchester County | 11 | 2.4% | 1,025,489 | 1,001,489 |
| New York County | 12 | 2.14% | 1,715,534 | 1,679,602 |
| Richmond County | 13 | 2.01% | 505,088 | 495,113 |
| Suffolk County | 14 | 1.81% | 1,549,669 | 1,522,175 |
| Putnam County | 15 | 1.66% | 99,251 | 97,628 |
| Schoharie County | 16 | 1.48% | 30,201 | 29,761 |
| Oswego County | 17 | 1.44% | 119,137 | 117,450 |
| Ontario County | 18 | 1.31% | 113,826 | 112,350 |
| Nassau County | 19 | 1.05% | 1,405,210 | 1,390,584 |
| Rensselaer County | 20 | 1.04% | 162,555 | 160,888 |
| Ulster County | 21 | 1.02% | 183,119 | 181,277 |
| Livingston County | 22 | 0.96% | 62,187 | 61,596 |
| Hamilton County | 23 | 0.71% | 5,106 | 5,070 |
| Montgomery County | 24 | 0.6% | 49,784 | 49,487 |
| Orleans County | 25 | 0.52% | 40,278 | 40,069 |
| Erie County | 26 | 0.28% | 955,034 | 952,353 |
| Lewis County | 27 | -0.06% | 26,542 | 26,557 |
| Allegany County | 28 | -0.24% | 47,243 | 47,358 |
| Wayne County | 29 | -0.31% | 90,929 | 91,213 |
| Monroe County | 30 | -0.39% | 754,804 | 757,747 |
| Onondaga County | 31 | -0.68% | 470,984 | 474,218 |
| Herkimer County | 32 | -0.7% | 59,613 | 60,031 |
| Broome County | 33 | -0.88% | 196,425 | 198,172 |
| Oneida County | 34 | -0.9% | 229,021 | 231,103 |
| Warren County | 35 | -1.16% | 64,848 | 65,608 |
| Seneca County | 36 | -1.18% | 33,118 | 33,512 |
| Queens County | 37 | -1.2% | 2,361,159 | 2,389,813 |
| Wyoming County | 38 | -1.24% | 39,704 | 40,201 |
| Niagara County | 39 | -1.32% | 209,342 | 212,133 |
| Genesee County | 40 | -1.32% | 57,544 | 58,315 |
| Madison County | 41 | -1.53% | 66,912 | 67,951 |
| Delaware County | 42 | -1.55% | 43,545 | 44,230 |
| Steuben County | 43 | -1.55% | 91,871 | 93,321 |
| Yates County | 44 | -1.56% | 24,335 | 24,720 |
| Tioga County | 45 | -1.69% | 47,536 | 48,354 |
| Essex County | 46 | -1.74% | 36,640 | 37,288 |
| Cortland County | 47 | -1.78% | 45,921 | 46,751 |
| Kings County | 48 | -1.82% | 2,667,019 | 2,716,455 |
| Cayuga County | 49 | -2.1% | 74,551 | 76,151 |
| Clinton County | 50 | -2.34% | 77,847 | 79,715 |
| Cattaraugus County | 51 | -2.49% | 75,065 | 76,983 |
| Greene County | 52 | -2.6% | 46,517 | 47,761 |
| Fulton County | 53 | -2.63% | 51,713 | 53,111 |
| Washington County | 54 | -2.71% | 59,453 | 61,106 |
| Columbia County | 55 | -2.86% | 59,665 | 61,419 |
| St. Lawrence County | 56 | -2.94% | 105,140 | 108,327 |
| Chenango County | 57 | -3.19% | 45,578 | 47,079 |
| Jefferson County | 58 | -3.27% | 112,270 | 116,071 |
| Chemung County | 59 | -3.45% | 80,787 | 83,677 |
| Chautauqua County | 60 | -3.56% | 122,831 | 127,370 |
| Bronx County | 61 | -3.82% | 1,403,640 | 1,459,323 |
| Schuyler County | 62 | -7.78% | 16,471 | 17,861 |
New York's counties show varied growth patterns from 2020 to 2026. Rockland County leads with 0.98% annualized growth, followed by Tompkins County (0.98%) and Orange County (0.71%). The largest counties are Kings County (2,667,019), Queens County (2,361,159), and New York County (1,715,534). Of the 62 counties in New York, 26 are growing while 36 have experienced population decline. Overall, counties averaged -0.03% annualized growth, with total population growing by 0.02% annually.
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