PlainZIP provides free demographic, income, education, housing, and business data for every U.S. ZIP code. All data comes from the U.S. Census Bureau American Community Survey (ACS) and ZIP Code Business Patterns (ZBP), the most comprehensive sources of community-level statistics in the country.

Whether you are researching neighborhoods for a move, analyzing markets for your business, or studying demographic trends for academic work, PlainZIP gives you instant access to the numbers that matter: population, median household income, poverty rates, education attainment, housing values, rent costs, local business establishments, employment figures, and much more.

Browse by state, search by ZIP code or city name, or explore our rankings to find the wealthiest, most educated, and most populated ZIP codes in the United States. Every data point links back to its source, so you can verify and cite with confidence.

ZIP Code Guides

Learn how to use Census demographic data.

Understanding ZIP Code Data

What Census data tells you — and what it doesn't.

ZIP Codes for Relocation

Evaluate neighborhoods with data before you move.

Reading Census Demographics

What the numbers mean and mistakes to avoid.

What Your ZIP Code Says About You

Income, education, and housing patterns — and the starkest contrasts in US Census data.

Best ZIP Codes for Families

How to find family-friendly ZIP codes using school, safety, and affordability data.

View all guides →

Frequently Asked Questions

Where does PlainZIP get its data?

All data comes from the U.S. Census Bureau's American Community Survey (ACS), which collects detailed demographic, economic, and housing data for ZIP code tabulation areas (ZCTAs) across the United States.

How many ZIP codes does PlainZIP cover?

PlainZIP includes data for approximately 33,000 ZIP code tabulation areas, covering demographics, income, housing, education, and commute patterns for the entire United States.

Is PlainZIP free?

Yes, PlainZIP is completely free. You can look up any ZIP code, view scorecards, compare dashboards, and explore demographic data without any account or subscription.

What is the difference between a ZIP code and a ZCTA?

ZIP codes are mail delivery routes defined by USPS, while ZCTAs (ZIP Code Tabulation Areas) are Census Bureau geographic areas that approximate ZIP code boundaries. PlainZIP uses ZCTAs because they have well-defined boundaries suitable for demographic analysis.