| Index | South Plainfield | New Jersey | National |
| Income per capita | $62,000 | $55,297 | $44,883 |
| Median household income | $162,018 | $108,915 | $81,333 |
| Median income owner occupied | $174,343 | $143,334 | $106,172 |
| Median income renter occupied | $127,566 | $61,880 | $52,080 |
| Median earnings male | $84,827 | $69,742 | $54,343 |
| Median earnings female | $60,487 | $46,406 | $38,439 |
| Unemployment rate | 4.3% | 5.4% | 4.9% |
| Poverty level | 3.1% | 10.9% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 8.3% | 8.3% |
| Manufacturing sector | 13.5% | 13.5% |
| Financial & insurance services | 4.7% | 4.7% |
| Wholesale & retail services | 15.8% | 15.8% |
| Public administration | 10.5% | 10.5% |
| Transportation, warehousing & utilities | 9.4% | 9.4% |
| Education, health & social services | 10.2% | 10.2% |
| Other | 24.8% | 24.8% |
| City | Population | Household Income | National Avg. |
| Short Hills, NJ | 14,190 | $375,147 | 361.2% |
| Harlingen, NJ | 492 | $362,607 | 345.8% |
| Blawenburg, NJ | 101 | $332,214 | 308.5% |
| Pleasant Plains, NJ | 643 | $316,694 | 289.4% |
| Blackwells Mills, NJ | 9,882 | $298,230 | 266.7% |
| South Plainfield, NJ | 24,668 | $162,018 | 99.2% |
| City | Population | Household Income | National Avg. |
| North Lynnwood, WA | 24,656 | $121,114 | 48.9% |
| Rosemont, CA | 24,690 | $106,928 | 31.5% |
| Chestermere, AB | 24,643 | n/a | |
| Port St. John, FL | 24,638 | $101,434 | 24.7% |
| Sugar Hill, GA | 24,637 | $132,133 | 62.5% |
| South Plainfield, NJ | 24,668 | $162,018 | 99.2% |