Delivery Time Calculator by ZIP Code for USPS
See USPS delivery times between any two ZIP codes. The calculator reads USPS's own service standards for your ZIP pair (the zone it shows only sets the price) for Priority Mail, Ground Advantage, First-Class Mail and more.
Only know the two states? See mail time between states.
By Hamdi Saidani.
Calculate Delivery Time by ZIP Code
Enter both ZIP codes and the mailing date. The dates come from the USPS service standard for your ZIP pair, not from the distance or the zone.
Today
Already mailed? Pick the day you mailed it.
No regular USPS delivery on these days
All USPS holidaysReady to Calculate
Enter the two ZIP codes and the mailing date above, then press "Calculate Delivery Time" to see the expected delivery date for each mail class.
How Do USPS Shipping Zones Work?
USPS shipping zones 1 to 8 are distance bands; Zone 9 is only for Palau, Micronesia and the Marshall Islands.
Zone 1 covers local deliveries within 50 miles, while Zone 8 spans cross-country distances over 1,800 miles.
Higher zones cost more for zone-priced services such as Priority Mail and Ground Advantage. The delivery days are set separately, per pair of ZIP areas.
USPS sets zones 1 to 8 by distance from the origin ZIP code (Zone 9 is only for Palau, Micronesia and the Marshall Islands). The zone sets the shipping cost for most services.
Delivery days come from a separate USPS table, one standard per pair of 3-digit ZIP areas, which is what this calculator reads.
How zones are calculated
USPS uses the first 3 digits of each ZIP code to set the zone. It measures from the center of the origin's 3-digit ZIP area to the center of the destination's, not from the exact street address.
Example: If you're shipping from ZIP 10001 (New York, NY) to 90210 (Beverly Hills, CA), USPS looks at "100" to "902" to calculate Zone 8 (cross-country).
USPS Zone Distance Chart
This chart shows how USPS zones correspond to distance. Zones set the price; the delivery days come from the USPS service standard for your ZIP pair, which the calculator above reads.
| Zone | Distance |
|---|---|
| Zone 1 | 0-50 miles |
| Zone 2 | 51-150 miles |
| Zone 3 | 151-300 miles |
| Zone 4 | 301-600 miles |
| Zone 5 | 601-1,000 miles |
| Zone 6 | 1,001-1,400 miles |
| Zone 7 | 1,401-1,800 miles |
| Zone 8 | 1,801+ miles |
How to Find Delivery Time Between Any Two ZIP Codes
To find USPS delivery time between ZIP codes, use our calculator above.
Enter the origin ZIP, the destination ZIP and the mailing date (today is filled in), then pick a mail class or compare all.
The calculator reads the USPS service standard for your ZIP pair and shows the expected delivery date for each mail class.
Enter your origin ZIP code
The 5-digit ZIP where your package ships from
Enter destination ZIP code
The 5-digit ZIP where your package is going
Pick the mailing date and mail class
Today is filled in. Already mailed it? Pick that day. Keep Compare All Classes to see every class.
Get your estimate
See the expected delivery date for each mail class
Delivery Times Between Major Cities
USPS standard days between the main 3-digit ZIP area of each city (USPS directory, October 2026):
| From | To | Zone | Priority Mail |
|---|---|---|---|
| New York, NY | Los Angeles, CA | 8 | 2 days |
| Chicago, IL | Houston, TX | 5 | 3 days |
| Miami, FL | Seattle, WA | 8 | 2 days |
| Boston, MA | Philadelphia, PA | 3 | 2 days |
| San Francisco, CA | Denver, CO | 5 | 3 days |
| Dallas, TX | Atlanta, GA | 5 | 3 days |
* One main ZIP area per city. Other ZIP codes in the same city can differ, so check yours in the calculator above.
Tips for Faster USPS Delivery
Mind the weekend
No regular delivery on Sundays: a 2-day piece mailed Friday arrives Monday
Use complete addresses
Include the apartment number and the full ZIP code
Consider Flat Rate boxes
Same price at any distance, up to 70 lbs: good for heavy items going far
Drop off before cutoff
Drop off before your Post Office's last collection so that day counts as your mailing day
Frequently Asked Questions
How do ZIP codes affect USPS delivery time?
USPS publishes a delivery standard for every pair of 3-digit ZIP areas and each main mail class except Priority Mail Express, plus a list of 5-digit ZIP codes that take longer. That table sets the days, not the zone.
Zones (1 to 8 in the lower 48) set the price, and longer routes usually have both a higher zone and more days.
How does USPS calculate shipping zones?
USPS zones are based on the distance between the first 3 digits of the origin and destination ZIP codes. Each zone corresponds to a distance range, with Zone 1 being 0-50 miles and Zone 8 being 1,801+ miles.
Can I ship faster within the same ZIP code?
Local mail gets the shortest USPS standards, but not 1 day.
Within your own 3-digit ZIP area, a stamped letter is 2 or 3 days in almost every area (2 in about two thirds), Priority Mail is 2 or 3 days (2 in about half), and Ground Advantage is 2 to 4 days.
For next-day, look at Priority Mail Express (1-3 days, with a money-back guarantee; exceptions apply).
Does my ZIP code affect shipping rates?
Yes, for zone-priced services such as Priority Mail and Ground Advantage, at both retail and Commercial prices: higher zones cost more.
Flat Rate boxes and envelopes, Media Mail and First-Class Mail letters cost the same at any distance.