One-time purchase options for historical ZIP Code data from October 2004 to July 2025
Best for: Specific compliance needs, one-time research projects
Best for: Comprehensive research, trend analysis, legacy data validation
Best for: Data resellers, SaaS applications, consulting firms
| Feature | Single Month | Complete Archive | Redistribution |
|---|---|---|---|
| Months Included | 1 (your choice) | 250+ (all available) | 250+ (all available) |
| Data Fields | 94 fields | 94 fields | 94 fields |
| Supplemental Files | 5 files | 5 files | 5 files |
| Price | $139.95 | $699.95 ($2.80/month avg) | $1,599.95 |
| Best For | Specific date validation | Research & trend analysis | Resale to clients |
| Redistribution Rights | ? | ? | ? |
Three compelling reasons to access point-in-time ZIP Code data
Match addresses to ZIP codes as they existed at a specific point in time. Perfect for cleaning up old customer databases, verifying historical records, or validating addresses from legacy systems that predate recent ZIP Code changes.
Analyze how populations, household incomes, and demographics evolved across 20+ years. Observe Census data transitions from 2000 ? 2010 ? 2020 and understand how communities changed over time for market research and planning.
Audits and compliance often require data "as it existed on [specific date]". Our historical publications provide point-in-time accuracy you can document and verify, essential for regulatory compliance and legal requirements.
Quick answers to common questions about our Historical ZIP Code Database
The only difference is the time frame. Historical publications contain the exact same data structure as our current Business edition database-just frozen at a specific point in time.
Current Database:
Historical Database:
Both use the same USPS-licensed sources and maintain 99.9% accuracy.
October 2004 is our earliest available historical publication.
We've been archiving monthly publications since we began offering the Business edition ZIP Code Database. This gives you:
Historical data lags 3-6 months behind our current database to ensure customers use the appropriate product for their needs.
Historical data maintains a 3-6 month lag to ensure customers select the right product for their needs.
The reasoning:
Which should you choose?
Still unsure? Contact us and we'll help you choose.
It depends on your specific needs:
Single Month ($139.95) is best if:
Complete Archive ($699.95) is best if:
Not sure? Complete Archive offers the best value and flexibility. At $2.80 per month average, you get instant access to any date you need without worrying about picking the wrong month.
Contact us if you'd like help deciding.
Yes, we can work with you on upgrading. Contact us at 1-800-425-1169 or info@zip-codes.com to discuss upgrade options.
While upgrades aren't automated through our website, we're happy to help customers who realize they need broader historical access after purchasing a single month.
Pro tip: If you're uncertain about your needs, Complete Archive at $699.95 offers the best value and eliminates the need to upgrade later.
Historical publications are available in the same formats as our current database:
All formats contain identical data-choose whichever works best for your workflow. Most customers prefer CSV for its universal compatibility.
All files include the same 94 data fields and 5 supplemental files as our current Business edition.
Census data in historical publications reflects what was current at that time. Field names remain consistent, but the source Census era evolves:
Census 2000 Era (Early years ~2004-2010):
Census 2010 Era (Mid years ~2010-2023):
Census 2020 Era (Recent years 2023+):
This transition is natural and expected-each historical publication contains the best available Census data at that point in time, giving you an accurate picture of how demographics were understood then.
No-historical publications are point-in-time data and do not receive updates.
This is by design. Historical data represents exactly what existed at a specific moment, which is essential for:
Your purchase includes:
Need ongoing updates? Consider our current database with monthly updates and annual subscription.
Yes! This is one of the primary use cases for historical data.
Perfect for:
How it works:
Match your old addresses against the ZIP Code data from the month/year those addresses were created. This tells you whether the address was valid at that time, even if ZIP codes have since changed.
Example use case: You have customer records from 2010 with addresses that no longer validate against current ZIP codes. Using our October 2010 historical publication, you can verify those addresses were correct when created.
For ongoing address validation needs, consider our ZIP Code API for real-time validation.
While we don't offer specific historical month samples, you can explore the data structure in several ways:
1. Use our Data Explorer above:
Shows current data structure with all 94 fields. Historical publications use identical structure with point-in-time values.
2. Download our Business sample file:
Download Business Edition Sample
Historical data uses the same structure as our Business edition
3. 30-Day Money-Back Guarantee:
Every purchase is backed by our unconditional guarantee. If the historical data doesn't meet your needs, contact us within 30 days for a full refund.
Questions about the data? Contact us at 1-800-425-1169 and we'll help you determine if historical data is right for your project.
Contact our team for personalized assistance.
Email: info@zip-codes.com | Phone: 1-800-425-1169
Historical publications contain data as it existed at the time of release. Sources include the United States Postal Service, U.S. Census Bureau (Census 2000, 2010, and 2020 data by era), U.S. Geological Survey, Centers for Medicare & Medicaid Services, and other trusted federal agencies. Each monthly publication represents the exact data we provided to customers at that point in time, ensuring historical accuracy for research, compliance, and validation purposes.