PlainZIP

Research

Original data research from the PlainZIP. Every number here is pulled directly from our live database; nothing is hardcoded. Our analyses draw on the U.S. Census Bureau's 2023 American Community Survey 5-Year Estimates, see our methodology for how we source and compute every figure.

Download the state-level summary (CSV) , open extract wired into this page's Dataset JSON-LD.

What can you learn from PlainZIP research?

What this research covers

PlainZIP research ranks ACS ZIP Code Tabulation Areas across 33,099 ZIPs in 52 states and territories (3,212 counties), answering one superlative question per study from the live Census mirror.

33,099
ZCTAs in extract
52
states + territories
3,212
counties covered
5
published ZIP studies

Studies below answer one ranking question each from the live ACS 5-Year mirror; they are descriptive demographic statistics, not housing advice or valuation guidance.

Which US ZIP codes lead by income, home value, and density?

This page explains the source records, calculation, and limits behind the figures shown. This hub lists ACS-backed ZIP ranking studies; each linked page discloses its metric, top-codes, and limits. Read our editorial standards and corrections policy, the methodology behind these numbers, or report a correction. Data current as of the 2023 ACS 5-Year release.