Business & Logistics
How businesses use ZIP codes — shipping zones, sales tax lookup, direct mail marketing, and the USPS logistics network.
Shipping Zones: How Carriers Price by ZIP Code
USPS, UPS, and FedEx calculate shipping costs based on origin-destination ZIP code zones. Here's how zones work.
Sales Tax Lookup by ZIP Code
Sales tax rates vary by state, county, city, and special district. ZIP codes provide a starting point — but not the full answer.
Direct Mail Marketing and ZIP Code Targeting
Direct mail campaigns use ZIP code demographics to target audiences with precision. Here's how modern mail targeting works.
The USPS Network: From Local to National
The USPS operates 230,000+ vehicles, 31,000+ post offices, and hundreds of processing facilities. Here's how the network is organized by ZIP code.
Insurance Rating by ZIP Code
Auto, home, and health insurance rates all vary by ZIP code. Learn what factors drive these differences.
Real Estate and ZIP Code Valuation
ZIP codes are the most common geographic unit for real estate analysis. Here's how they shape property markets.
ZIP Code Data for Market Research
From site selection to customer segmentation, ZIP codes are the building blocks of geographic market research.
Bulk Mail and Postal Discounts by ZIP
USPS offers steep discounts for presorted bulk mail. Understanding ZIP-based sorting requirements can save mailers 30-50%.