What is the richest ZIP code in Texas?

The wealthiest Texas ZIP code by median household income is 76092 in Southlake, with $250,000+, the highest Census category. The top five ZIP codes by median income are in Houston, Dallas-Fort Worth, and Austin areas, with incomes more than double the state median of $78,476. The highest mean household incomes also cluster in these metro areas, highlighting significant regional affluence.