The median income of Suffolk County residents was an inflation-adjusted $37,420 per year. Suffolk County had 489,328 households in 2017, with a population of 1,497,595.
The county with the highest median resident income in the state was New York County. New York County's median income was $46,152 per year after adjusting for inflation – $8,732 more than Suffolk County. It had 758,345 households in 2017 and a population of 1,653,877.
Bronx County had the lowest annual resident income among counties in New York, with a median income of only $20,576 per year. That was $16,844 less than the median income in Suffolk County at the time. Bronx County had 495,356 households in 2017 and a population of 1,455,846.
The table below shows the state's counties ranked by median annual resident earnings in 2017.
| Rank | County | Earnings per resident ($$$) |
|---|---|---|
| 1 | New York County | 46,152 |
| 2 | Nassau County | 41,221 |
| 3 | Putnam County | 40,621 |
| 4 | Westchester County | 39,890 |
| 5 | Saratoga County | 38,460 |
| 6 | Suffolk County | 37,420 |
| 7 | Richmond County | 36,459 |
| 8 | Rockland County | 35,724 |
| 9 | Orange County | 33,101 |
| 10 | Rensselaer County | 32,696 |
| 11 | Albany County | 32,452 |
| 12 | Dutchess County | 32,308 |
| 13 | Columbia County | 31,806 |
| 14 | Onondaga County | 30,565 |
| 15 | Ontario County | 30,514 |
| 16 | Ulster County | 30,036 |
| 17 | Wyoming County | 30,011 |
| 18 | Warren County | 30,002 |
| 19 | Tioga County | 29,948 |
| 20 | Queens County | 29,706 |
| 21 | Erie County | 29,543 |
| 22 | Schenectady County | 29,290 |
| 23 | Monroe County | 29,289 |
| 24 | Madison County | 28,826 |
| 25 | Cayuga County | 28,586 |
| 26 | Niagara County | 28,261 |
| 27 | Kings County | 28,238 |
| 28 | Wayne County | 28,138 |
| 29 | Chemung County | 27,930 |
| 30 | Essex County | 27,770 |
| 31 | Genesee County | 27,650 |
| 32 | Lewis County | 27,449 |
| 33 | Schoharie County | 26,966 |
| 34 | Oneida County | 26,925 |
| 35 | Clinton County | 26,915 |
| 36 | Franklin County | 26,865 |
| 37 | Sullivan County | 26,804 |
| 38 | Livingston County | 26,731 |
| 39 | Seneca County | 26,725 |
| 40 | Greene County | 26,708 |
| 41 | Fulton County | 26,491 |
| 42 | Orleans County | 26,344 |
| 43 | Washington County | 26,296 |
| 44 | Steuben County | 26,063 |
| 45 | Jefferson County | 25,929 |
| 46 | Tompkins County | 25,659 |
| 47 | Herkimer County | 25,616 |
| 48 | Cortland County | 25,508 |
| 49 | Montgomery County | 25,400 |
| 50 | Chenango County | 25,398 |
| 51 | Oswego County | 25,129 |
| 52 | Broome County | 25,008 |
| 53 | Cattaraugus County | 24,740 |
| 54 | Schuyler County | 24,308 |
| 55 | Yates County | 24,221 |
| 56 | Delaware County | 23,924 |
| 57 | St. Lawrence County | 23,906 |
| 58 | Otsego County | 23,477 |
| 59 | Chautauqua County | 23,202 |
| 60 | Hamilton County | 22,259 |
| 61 | Allegany County | 21,607 |
| 62 | Bronx County | 20,576 |
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