ZIP Code Database

Current Version: September 2023

Money-Back Guarantee
Live Technical Support
We are a U.S. Company
There are two versions of our ZIP Code database: Standard and Premium. The only difference between the two is how Latitude & Longitude is derived (shape-based vs. population-based).
Standard Version Premium Version
Commercial Use Yes Yes
Future Updates Included for 12 months Included for 12 months
Latitude & Longitude Shape-Based (explained) Population-Based (explained)
Price & Ordering $199 / Year $499 / Year

Schedule Always Up-to-date. Official USPS monthly updates are applied before the first day of each month. Everything else is applied immediately.
Access to Data Direct download anytime from account dashboard. Custom downloads via online utility included with purchase (see 30 sec video). Free FTP/SFTP access upon request. File formats CSV, Excel
Record Count This file has a record for each ZIP Code containing the official USPS city name. Also included is a pipe-delimited field containing any accepted or alternative city names within the ZIP Code. Approximately 42k records and 60k city names.
Cleansing Cleansing is the key to high-end data. USPS databases have thousands of errors (duplicates, misapplied locations, bad names). Our algorithms have tens of thousands built-in edits for accuracy and standardization. We continually monitor changes.

Database Details

Free FTP/SFTP (upon request)

To automate database updates via your script, we provide an FTP access. Just request it after purchase.

Data Format

Comma-Separated Values (CSV) Text File, Excel

Supplemental Files

Subscriptions include free supplemental files containing full names or extended data that correspond to codes or abbreviations found in product (states.csv, msa-list.csv, cmsa-all.csv)

5 Digit ZIP Code

Official U.S. Postal Service five digit ZIP Code

ZIP Class

U.S. Postal Service classification code:
(blank) – Standard ZIP Code for a general area
M – Military APO / FPO
P – P.O. Boxes
U – Unique to organization / private


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

Latitude and Longitude

Lat/Lon: Approximate ZIP Code center point. Our ZIP Code Premium version has population‐based center points, when available. Our ZIP Code Standard has shape-based centers.


Up-to-date population count from Census Bureau. Unpopulated ZIP Codes, such as P.O. Boxes and businesses, will have a zero in this field.

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.

Alternative Cities

City names that the USPS considers valid for a ZIP Code, albeit not the preferred city name (See City field for preferred).

ZIP City State Key

A unique key that combines the 5-digit ZIP Code with the 6-digit CityState key used by the USPS (the two are separated by a hyphen). Both correlate to other official USPS databases.

Utility Included with Subscription

Database Sources

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

Affordability and Simplicity

  • Cost Effective
  • One Year Access
  • Updated Monthly
  • Unlimited Downloads
  • Unlimited User Licensing Available
  • Supplemented with demographic and marketing data
  • We are a U.S Company - Live, Free Technical Support
  • 30 Day Money-Back Guarantee


Cannot be resold, transferred, or used to compete with (as outlined in our license agreement).

Related Links

View the Product Documentation
Shape-based vs Population-based Geocodes
Watch our Accuracy Matters video.