ZIP Code Database - Basic

Does Not Include Latitude and Longitude

Our 2021 Standard ZIP Code database (non-geocoded) is an Enterprise Class product well suited for commercial applications. Our processes for data cleansing and standardization make it vastly superior to most U.S. Postal Code databases on the market. Beyond USPS data, we cross-reference multiple sources to obtain the most accurate robust database possible. Our accuracy comes from 20 years of perfecting our methods to eliminate duplicates and create uniformity. Other postal databases can have thousands of duplicates, different spellings for the same name, and numerous incorrect records

If a ZIP Code boundary spans more than one city, each city is listed as a separate record making around 60,000 legitimate U.S. records. It has no duplicates but it is thoroughly complete. Its is standardized to ensure consistent spellings and uniform naming conventions. Mouse-over database specs (right) for field level detail.

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Highly Accurate

At GreatData, we earnestly pursue creating databases that are current, accurate, and precise. Quality over quantity is our commitment to you.

Annual Subscription

Keep your systems current by regularly downloading database updates during your subscription period.

Monthly Updates

Based on frequency of change, we recommend you download the latest version of this particular database on a regular basis.

Download Options

Immediate download link from our site, a free utility for custom files, or an FTP directory (upon request) auto updated as new releases occur.

Standard Place Names

Our US ZIP Code Database goes to great lengths to assure all the cities and towns are consistently labeled. By eliminating deprecated and misleading city records, the overall record count is reduced. Other products may have thousands of erroneous records added to their ZIPCode database.

Methodical Verification

Our precision and accuracy is a result of manual verification and comparing our databases with multiple resources. Once an anomaly has been identified, we refine our algorithm to account for it. We've been perfecting this since 1992! Learn more: view the ZIP Code Data Product Documentation

Database Specs

Multi-Cities per ZIP

If a ZIP Code boundary covers more than one city, each city is listed as a separate record (a sequence number indicates the primary city/town based on greatest population to the least).

Bonus: Included with the standard download is an extra file containing one record per ZIP Code for those wanting primary city only (thus, fewer records).

Data Format - CSV

Comma-Separated Values (CSV) Text File

5 Digit ZIP Code

Official U.S. Postal Service five digit ZIP Code

ZIP Type (Business, Military, etc.)

U.S. Postal Service type codes:
B = Single High-volume Address
M = APO/FPO Military
E = P.O. Box Only
No value indicates standard general delivery


Official U.S. Postal Service state abbreviation

State FIPS

Federal Information Processing Standard (FIPS) 2‐digit state. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).


The name of the county in which the ZIP Code is found.

County FIPS

Federal Information Processing Standard (FIPS) 3‐digit county. FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).


Official city name used by the U.S. Postal Service


Federal Information Processing Standard (FIPS) 5‐digit place (city/town). FIPS codes are not available for all areas (APO, FPO, some U.S. Territories).

City Type Indicator

U.S. Postal Service city designation: P=Primary City, A=Acceptable City, N=Non‐Acceptable City.

City Rank by Population

A sequence number applied to each city/town within a single ZIP Code indicating the greatest population to the least for that ZIP Code.

MSA Codes (Metro Statistical Area)

Metropolitan Statistical Area (MSA) codes are greater metropolitan areas as defined by the U.S. Office of Management & Budget. These areas usually represent the surrounding county or counties (if within commuting distance) of a city having 50,000 plus inhabitants.

Area Codes

Primary area code for each ZIP Code.

Time Zones

Standardized based on Coordinated Universal Time (UTC). Time zones range from ‐5 (Eastern Standard Time) to ‐10 (Hawaiian Standard Time).

Daylight Saving Time Flag

Indicates if Daylight Savings Time is observed in that ZIP Code.

Database Sources

We are licensees of USPS database products, but we enhance our US ZIP Code database based on decades of experience to provide you with the most accurate ZIP Codes database product available.

Affordability and Simplicity

  • Cost Effective
  • One Year Access
  • Updated Monthly
  • Unlimited Downloads
  • Unlimited User Licensing Available
  • Supplemented with demographic and marketing databases
  • We are a U.S Company - Live, Free Technical Support
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Cannot be resold, transferred, or used to compete with (as outlined in our license agreement).

Related Links

ZIP Code Database with Latitude and Longitude