| Index | Brockton | Montana | National |
| Income per capita | $18,000 | $39,875 | $44,883 |
| Median household income | $0 | $71,326 | $81,333 |
| Median income owner occupied | $54,099 | $88,680 | $106,172 |
| Median income renter occupied | $0 | $45,249 | $52,080 |
| Median earnings male | $84,561 | $47,130 | $54,343 |
| Median earnings female | $43,806 | $32,153 | $38,439 |
| Unemployment rate | 4.8% | 3.8% | 4.9% |
| Poverty level | 47.5% | 14.9% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 9.3% | 9.3% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 11.6% | 11.6% |
| Wholesale & retail services | 11.6% | 11.6% |
| Public administration | 51.2% | 51.2% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 16.3% | 16.3% |
| City | Population | Household Income | National Avg. |
| Poplar, MT | 999 | $69,810 | 14.2% |
| Brockton, MT | 349 | $0 | 100.0% |
| City | Population | Household Income | National Avg. |
| St. Marks, FL | 349 | $90,789 | 11.6% |
| Keysville, GA | 349 | $71,542 | 12.0% |
| Montrose, GA | 349 | $81,701 | 0.5% |
| Duncombe, IA | 349 | $69,712 | 14.3% |
| Kempton, IN | 349 | $68,983 | 15.2% |
| Brockton, MT | 349 | $0 | 100.0% |