| Index | Twin Lakes | Iowa | National |
| Income per capita | $91,628 | $42,672 | $44,883 |
| Median household income | $155,372 | $81,387 | $81,333 |
| Median income owner occupied | $158,791 | $98,724 | $106,172 |
| Median income renter occupied | $0 | $45,890 | $52,080 |
| Median earnings male | $107,845 | $54,047 | $54,343 |
| Median earnings female | $70,948 | $36,462 | $38,439 |
| Unemployment rate | 0.0% | 3.2% | 4.9% |
| Poverty level | 15.9% | 12.3% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 8.3% | 8.3% |
| Wholesale & retail services | 31.7% | 31.7% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 10.0% | 10.0% |
| Other | 50.0% | 50.0% |
| City | Population | Household Income | National Avg. |
| Knierim, IA | 58 | $110,616 | 36.0% |
| Fonda, IA | 556 | $89,315 | 9.8% |
| Manson, IA | 1,803 | $81,209 | 0.2% |
| Lake City, IA | 1,788 | $80,817 | 0.6% |
| Sac City, IA | 1,929 | $73,044 | 10.2% |
| Twin Lakes, IA | 318 | $155,372 | 91.0% |
| City | Population | Household Income | National Avg. |
| Dillon Beach, CA | 318 | $259,102 | 218.6% |
| Coal Creek town, CO | 318 | $66,201 | 18.6% |
| Romeo, CO | 318 | $34,256 | 57.9% |
| Bostwick, GA | 318 | $110,486 | 35.8% |
| Newport, IN | 318 | $71,694 | 11.9% |
| Twin Lakes, IA | 318 | $155,372 | 91.0% |