| Index | Martinsburg | Nebraska | National |
| Income per capita | $40,987 | $42,745 | $44,883 |
| Median household income | $68,402 | $81,154 | $81,333 |
| Median income owner occupied | $93,073 | $102,351 | $106,172 |
| Median income renter occupied | $46,712 | $47,625 | $52,080 |
| Median earnings male | $58,574 | $53,280 | $54,343 |
| Median earnings female | $60,148 | $37,214 | $38,439 |
| Unemployment rate | 1.9% | 3.1% | 4.9% |
| Poverty level | 12.9% | 12.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 25.0% | 25.0% |
| Manufacturing sector | 8.3% | 8.3% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 0.0% | 0.0% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 8.3% | 8.3% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 58.3% | 58.3% |
| City | Population | Household Income | National Avg. |
| Newcastle, NE | 423 | $103,634 | 27.4% |
| Jackson, NE | 217 | $100,960 | 24.1% |
| Maskell, NE | 53 | $87,080 | 7.1% |
| Elk Point, SD | 2,155 | $86,038 | 5.8% |
| Jefferson, SD | 692 | $83,367 | 2.5% |
| Martinsburg, NE | 71 | $68,402 | 15.9% |
| City | Population | Household Income | National Avg. |
| Williford, AR | 71 | $32,528 | 60.0% |
| East Verde Estates, AZ | 71 | $103,569 | 27.3% |
| Freeport, CA | 71 | $0 | 100.0% |
| Simpson, IL | 71 | $72,988 | 10.3% |
| Union Hill, IL | 71 | $95,543 | 17.5% |
| Martinsburg, NE | 71 | $68,402 | 15.9% |