Ranking of New York Counties By Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of New York (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 1,769,657. Among all New York counties, Kings County had the highest population (aged 25 years and above) with an educational attainment of Less than High School Diploma (305,982), followed by Queens County (299,347), and Bronx County (248,215).
The chart below shows the top 10 New York counties, and the table below shows the ranking of all New York counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: New York ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of New York Counties By Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Kings County | 305982 |
| 2 | Queens County | 299347 |
| 3 | Bronx County | 248215 |
| 4 | New York County | 148767 |
| 5 | Suffolk County | 102304 |
| 6 | Nassau County | 80511 |
| 7 | Westchester County | 77286 |
| 8 | Erie County | 52956 |
| 9 | Monroe County | 46804 |
| 10 | Richmond County | 39258 |
| 11 | Onondaga County | 28245 |
| 12 | Orange County | 25676 |
| 13 | Rockland County | 23304 |
| 14 | Oneida County | 17958 |
| 15 | Dutchess County | 17701 |
| 16 | Albany County | 15177 |
| 17 | Niagara County | 12783 |
| 18 | Broome County | 12413 |
| 19 | Ulster County | 11452 |
| 20 | Saratoga County | 10652 |
| 21 | Chautauqua County | 9568 |
| 22 | Schenectady County | 9470 |
| 23 | Rensselaer County | 8773 |
| 24 | Oswego County | 8256 |
| 25 | St. Lawrence County | 8203 |
| 26 | Sullivan County | 7399 |
| 27 | Clinton County | 6871 |
| 28 | Cayuga County | 6635 |
| 29 | Jefferson County | 6605 |
| 30 | Chemung County | 6285 |
| 31 | Wayne County | 6281 |
| 32 | Steuben County | 5659 |
| 33 | Cattaraugus County | 5515 |
| 34 | Ontario County | 5358 |
| 35 | Washington County | 5108 |
| 36 | Fulton County | 4926 |
| 37 | Putnam County | 4702 |
| 38 | Greene County | 4359 |
| 39 | Warren County | 4183 |
| 40 | Columbia County | 4131 |
| 41 | Franklin County | 4068 |
| 42 | Herkimer County | 3928 |
| 43 | Montgomery County | 3885 |
| 44 | Orleans County | 3866 |
| 45 | Chenango County | 3810 |
| 46 | Seneca County | 3738 |
| 47 | Wyoming County | 3432 |
| 48 | Livingston County | 3421 |
| 49 | Madison County | 3371 |
| 50 | Delaware County | 3282 |
| 51 | Tompkins County | 3135 |
| 52 | Genesee County | 3096 |
| 53 | Cortland County | 2927 |
| 54 | Otsego County | 2845 |
| 55 | Allegany County | 2702 |
| 56 | Essex County | 2562 |
| 57 | Tioga County | 2537 |
| 58 | Yates County | 2286 |
| 59 | Schoharie County | 2015 |
| 60 | Lewis County | 1644 |
| 61 | Schuyler County | 1220 |
| 62 | Hamilton County | 809 |