| Index | Montgomery | Illinois | National |
| Income per capita | $45,569 | $47,397 | $44,883 |
| Median household income | $145,914 | $88,967 | $81,333 |
| Median income owner occupied | $148,743 | $111,557 | $106,172 |
| Median income renter occupied | $145,365 | $52,117 | $52,080 |
| Median earnings male | $77,641 | $60,185 | $54,343 |
| Median earnings female | $54,100 | $40,368 | $38,439 |
| Unemployment rate | 3.4% | 6.6% | 4.9% |
| Poverty level | 4.8% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 10.7% | 10.7% |
| Manufacturing sector | 11.3% | 11.3% |
| Financial & insurance services | 5.0% | 5.0% |
| Wholesale & retail services | 16.5% | 16.5% |
| Public administration | 8.9% | 8.9% |
| Transportation, warehousing & utilities | 15.6% | 15.6% |
| Education, health & social services | 12.1% | 12.1% |
| Other | 19.6% | 19.6% |
| City | Population | Household Income | National Avg. |
| Plainfield, IL | 45,974 | $198,573 | 144.1% |
| Naperville, IL | 151,582 | $193,565 | 138.0% |
| Winfield, IL | 10,018 | $190,724 | 134.5% |
| Geneva, IL | 22,487 | $174,660 | 114.7% |
| Prestbury, IL | 2,025 | $167,845 | 106.4% |
| Montgomery, IL | 20,189 | $145,914 | 79.4% |
| City | Population | Household Income | National Avg. |
| Kirkland, QC | 20,189 | n/a | |
| West Hempstead, NY | 20,191 | $194,054 | 138.6% |
| North Bay Shore, NY | 20,198 | $132,703 | 63.2% |
| Seymour, IN | 20,201 | $66,299 | 18.5% |
| Central Falls, RI | 20,175 | $51,370 | 36.8% |
| Montgomery, IL | 20,189 | $145,914 | 79.4% |