| County | Rank | Change (2020) ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Rockland County | 1 | 6.68% | 359,965 | 337,429 |
| Orange County | 2 | 4.81% | 420,250 | 400,973 |
| Otsego County | 3 | 3.69% | 60,544 | 58,389 |
| Schenectady County | 4 | 3.51% | 163,415 | 157,874 |
| Saratoga County | 5 | 2.98% | 242,852 | 235,815 |
| Albany County | 6 | 2.69% | 322,748 | 314,293 |
| Sullivan County | 7 | 2.31% | 80,271 | 78,461 |
| Westchester County | 8 | 2.08% | 1,022,321 | 1,001,451 |
| Montgomery County | 9 | 2.05% | 50,512 | 49,499 |
| Dutchess County | 10 | 1.97% | 302,160 | 296,309 |
| Suffolk County | 11 | 1.77% | 1,548,850 | 1,521,964 |
| Putnam County | 12 | 1.62% | 99,214 | 97,636 |
| Richmond County | 13 | 1.59% | 503,008 | 495,122 |
| Oswego County | 14 | 1.29% | 118,956 | 117,437 |
| Ulster County | 15 | 1.25% | 183,565 | 181,304 |
| Schoharie County | 16 | 1.21% | 30,117 | 29,758 |
| Ontario County | 17 | 0.94% | 113,527 | 112,467 |
| Allegany County | 18 | 0.85% | 46,778 | 46,385 |
| Nassau County | 19 | 0.66% | 1,400,095 | 1,390,952 |
| Wayne County | 20 | 0.34% | 91,512 | 91,201 |
| Genesee County | 21 | 0.18% | 58,404 | 58,299 |
| Rensselaer County | 22 | 0.07% | 161,006 | 160,889 |
| Livingston County | 23 | -0.11% | 61,512 | 61,577 |
| Delaware County | 24 | -0.19% | 44,129 | 44,215 |
| Yates County | 25 | -0.3% | 24,660 | 24,735 |
| Lewis County | 26 | -0.47% | 26,446 | 26,571 |
| Orleans County | 27 | -0.71% | 39,764 | 40,047 |
| Erie County | 28 | -0.71% | 945,699 | 952,491 |
| Monroe County | 29 | -1.01% | 750,718 | 758,384 |
| Seneca County | 30 | -1.05% | 33,095 | 33,445 |
| Greene County | 31 | -1.21% | 47,165 | 47,743 |
| Warren County | 32 | -1.25% | 64,779 | 65,597 |
| Broome County | 33 | -1.3% | 195,579 | 198,145 |
| Madison County | 34 | -1.32% | 67,047 | 67,942 |
| New York County | 35 | -1.35% | 1,664,214 | 1,687,033 |
| Wyoming County | 36 | -1.49% | 39,665 | 40,264 |
| Queens County | 37 | -1.52% | 2,349,330 | 2,385,541 |
| Fulton County | 38 | -1.57% | 52,248 | 53,084 |
| Clinton County | 39 | -1.59% | 78,444 | 79,713 |
| Herkimer County | 40 | -1.62% | 59,070 | 60,043 |
| Steuben County | 41 | -1.71% | 91,771 | 93,371 |
| Tompkins County | 42 | -1.71% | 103,700 | 105,508 |
| Niagara County | 43 | -1.73% | 208,444 | 212,118 |
| Tioga County | 44 | -2.05% | 47,361 | 48,352 |
| Cattaraugus County | 45 | -2.14% | 75,332 | 76,977 |
| Onondaga County | 46 | -2.19% | 464,995 | 475,429 |
| Cortland County | 47 | -2.37% | 45,638 | 46,745 |
| Columbia County | 48 | -2.47% | 59,947 | 61,468 |
| Oneida County | 49 | -2.5% | 225,492 | 231,265 |
| Essex County | 50 | -2.52% | 36,337 | 37,275 |
| Franklin County | 51 | -2.61% | 46,017 | 47,252 |
| Cayuga County | 52 | -2.65% | 74,088 | 76,107 |
| Kings County | 53 | -2.68% | 2,649,269 | 2,722,259 |
| Hamilton County | 54 | -2.84% | 4,929 | 5,073 |
| Chautauqua County | 55 | -3.01% | 123,555 | 127,383 |
| Chenango County | 56 | -3.05% | 45,637 | 47,071 |
| St. Lawrence County | 57 | -3.12% | 104,808 | 108,182 |
| Washington County | 58 | -3.67% | 58,884 | 61,127 |
| Bronx County | 59 | -3.74% | 1,406,612 | 1,461,233 |
| Chemung County | 60 | -4.37% | 79,993 | 83,652 |
| Jefferson County | 61 | -4.99% | 110,285 | 116,075 |
| Schuyler County | 62 | -6.47% | 16,707 | 17,863 |
New York's counties show varied growth patterns from 2020 to 2026. Rockland County leads with 1.08% annualized growth, followed by Orange County (0.79%) and Otsego County (0.61%). The largest counties are Kings County (2,649,269), Queens County (2,349,330), and New York County (1,664,214). Of the 62 counties in New York, 22 are growing while 40 have experienced population decline. Overall, counties averaged -0.11% annualized growth, with total population growing by -0.1% annually.
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