What are the fastest-growing counties in New York?
Rockland County is the fastest-growing county in New York: its population grew 1.16% a year from 2020 to 2025, to 357,397 residents (Census PEP Vintage 2025). Orange County (0.82%) and Otsego County (0.74%) follow. New York as a whole grew -0.12% a year to 20,002,427 residents.
Data as of 2026-09-23. Population, growth and migration: PEP Vintage 2025 · 2020–2025. Income migration: IRS SOI 2022–2023 (2-yr lag).
Top 10 counties in New York by population growth, 2020 to 2025
| Rank | County | Population | Growth (% per year) | Net domestic migration | Net international migration | IRS net AGI migration |
|---|---|---|---|---|---|---|
| 1 | Rockland County | 357,397 | 1.16% | -17,809 | +16,483 | -$310.0M |
| 2 | Orange County | 417,669 | 0.82% | -6,341 | +9,971 | -$108.0M |
| 3 | Otsego County | 60,589 | 0.74% | +3,082 | +379 | -$13.3M |
| 4 | Schenectady County | 162,581 | 0.59% | +2,675 | +2,029 | -$20.2M |
| 5 | Sullivan County | 80,586 | 0.54% | -183 | +1,796 | -$2.7M |
| 6 | Saratoga County | 241,343 | 0.46% | +5,265 | +1,470 | +$85.2M |
| 7 | Albany County | 321,225 | 0.44% | -575 | +9,321 | -$158.3M |
| 8 | Suffolk County | 1,546,090 | 0.32% | -25,623 | +37,846 | -$806.9M |
| 9 | Dutchess County | 300,708 | 0.30% | +872 | +4,976 | +$38.0M |
| 10 | Putnam County | 99,028 | 0.28% | -506 | +1,373 | -$61.1M |
Where are people moving in New York?
Saratoga County gained the most people from elsewhere in the United States: net domestic migration of +5,265 from 2020 to 2025 (Census PEP Vintage 2025). The table ranks every New York place with 10,000 or more residents by that figure; the IRS column shows net adjusted gross income migration for 2022 to 2023.
| Rank | County | Population | Growth (% per year) | Net domestic migration | Net international migration | IRS net AGI migration |
|---|---|---|---|---|---|---|
| 1 | Saratoga County | 241,343 | 0.46% | +5,265 | +1,470 | +$85.2M |
| 2 | Otsego County | 60,589 | 0.74% | +3,082 | +379 | -$13.3M |
| 3 | Schenectady County | 162,581 | 0.59% | +2,675 | +2,029 | -$20.2M |
| 4 | Ulster County | 183,330 | 0.22% | +2,103 | +2,535 | +$171.6M |
| 5 | Oswego County | 118,569 | 0.19% | +1,606 | +314 | +$14.3M |
| 6 | Delaware County | 44,305 | 0.04% | +1,478 | +72 | +$12.7M |
| 7 | Ontario County | 113,130 | 0.12% | +1,336 | +475 | +$19.1M |
| 8 | Schoharie County | 30,176 | 0.28% | +948 | +45 | +$2.9M |
| 9 | Dutchess County | 300,708 | 0.30% | +872 | +4,976 | +$38.0M |
| 10 | Allegany County | 46,800 | 0.18% | +802 | +162 | -$1.3M |
Go past the headline numbers
The interactive Demographics map layer and the full report for a single place are part of paid plans.
Get the Demographics Report for Rockland CountyFrequently asked questions
- What are the fastest-growing counties in New York?
- By population growth from 2020 to 2025, the fastest are Rockland County (1.16% a year), Orange County (0.82% a year), Otsego County (0.74% a year), Schenectady County (0.59% a year) and Sullivan County (0.54% a year) (Census PEP Vintage 2025). Only places with 10,000 or more residents are ranked.
- Where are people moving in New York?
- By net domestic migration from 2020 to 2025, the largest gains are Saratoga County (+5,265), Otsego County (+3,082) and Schenectady County (+2,675) (Census PEP Vintage 2025).
- How fast is New York growing overall?
- New York grew -0.12% a year from 2020 to 2025, to 20,002,427 residents, with net migration of -297,773 people (Census PEP Vintage 2025).
- Where does this New York data come from, and how current is it?
- Population, growth and migration come from the U.S. Census Bureau Population Estimates Program (PEP Vintage 2025 · 2020–2025). Income migration comes from IRS Statistics of Income (IRS SOI 2022–2023 (2-yr lag)). Counties with fewer than 10,000 residents are not ranked (1 of 62 in New York). Data last loaded 2026-09-23.
Data as of 2026-09-23: sources and periods
- Population, growth and migration
- U.S. Census Bureau, Population Estimates Program: PEP Vintage 2025 · 2020–2025. census.gov/programs-surveys/popest
- Income migration (net AGI)
- Internal Revenue Service, Statistics of Income migration data: IRS SOI 2022–2023 (2-yr lag). irs.gov/statistics/soi-tax-stats-migration-data
How to read the table
- Population is the Census July 1 estimate of the latest vintage.
- Growth is the compound annual rate over 2020 to 2025.
- Net domestic and international migration are cumulative people over 2020 to 2025.
- IRS net AGI migration is adjusted gross income that moved in, less what moved out, for 2022 to 2023. A plus sign means a net inflow.
- Places with fewer than 10,000 residents are left out of the rankings.