| Index | Kirby | Texas | National |
| Income per capita | $31,199 | $41,777 | $44,883 |
| Median household income | $65,928 | $80,880 | $81,333 |
| Median income owner occupied | $75,065 | $107,635 | $106,172 |
| Median income renter occupied | $51,779 | $54,463 | $52,080 |
| Median earnings male | $53,419 | $53,620 | $54,343 |
| Median earnings female | $35,213 | $36,296 | $38,439 |
| Unemployment rate | 1.7% | 4.3% | 4.9% |
| Poverty level | 16.4% | 16.7% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 12.4% | 12.4% |
| Manufacturing sector | 3.8% | 3.8% |
| Financial & insurance services | 6.1% | 6.1% |
| Wholesale & retail services | 24.4% | 24.4% |
| Public administration | 6.7% | 6.7% |
| Transportation, warehousing & utilities | 10.0% | 10.0% |
| Education, health & social services | 6.5% | 6.5% |
| Other | 28.7% | 28.7% |
| City | Population | Household Income | National Avg. |
| Hill Country Village, TX | 653 | $347,571 | 327.3% |
| Shavano Park, TX | 3,988 | $290,835 | 257.6% |
| Terrell Hills, TX | 5,567 | $274,994 | 238.1% |
| Alamo Heights, TX | 8,695 | $216,620 | 166.3% |
| Olmos Park, TX | 1,902 | $207,192 | 154.7% |
| Kirby, TX | 8,908 | $65,928 | 18.9% |
| City | Population | Household Income | National Avg. |
| Lake Villa, IL | 8,907 | $158,575 | 95.0% |
| Edgemere, MD | 8,906 | $128,145 | 57.6% |
| Ladue, MO | 8,903 | $368,480 | 353.1% |
| Chatham, NJ | 8,913 | $296,410 | 264.4% |
| Coaticook, QC | 8,901 | n/a | |
| Kirby, TX | 8,908 | $65,928 | 18.9% |