The Richest ZIP Code in Every State

The richest ZIP code of every state, by three measures

By median household income the leaders of 15 states sit at the Census cap of $250,000 and tie with other ZIP codes of their state; among the tied, the one with the highest income per person (where that figure's margin is at most a quarter of it) is shown. Income per person has no cap, so it orders the states below. Where the two measures name the same ZIP code, the state has one clear leader.

Method and limits

Residential ZIP codes with 1,000 or more people living in households (200+ households, at most 5 people a household). Median household income counts when its 90% margin is at most 25% of it (a value at the cap counts); ZIP codes tied at the cap are ordered by income per person. Income per person counts when its 90% margin is at most 25% of it. IRS adjusted gross income per tax return is income over returns filed (2022), for ZIP codes with 200 or more returns and at most 1.5 returns per household (the IRS files a return under the address on it, which can be an office or a mailbox): an average, lifted by a few very large incomes.

Every figure on this page is read from the PlainZIP database, built from the files named above; the same figures appear on each ZIP code's own page. The ZIP-level figures are one file: every ZIP code as CSV (columns on the methodology page).