USPS Addresses API Alternative

What is changing with the USPS Addresses API?

Here is what the change means in practice, based on the USPS Addresses API tech sheet (updated July 8, 2026) and the July 9, 2026 USPS industry alert:

• A signed license agreement is now required. Access to the enhanced Addresses API and its webhooks depends on a license agreement executed through DocuSign.

• You need an Enterprise Payment Account (EPA). Charges appear as an "Addresses Usage Fee" and are debited from an EPA that you set up and fund.

• Pricing is consumption-based and billed monthly in arrears.

• What you gain: near real-time (daily) address updates, improved matching, expanded delivery attributes such as delivery type and usage codes, and webhooks.

USPS publishes the fee schedule as monthly consumption tiers:

The first tier is a flat fee. Above it, USPS charges the whole month's volume at the single applicable tier rate. Check the current USPS fee schedule before you commit.

How does Geocodio compare to the USPS Addresses API?

Geocodio and the USPS Addresses API overlap on address cleanup, but they are built for different jobs.

The USPS API is a mail-addressing tool with CASS-certified validation and delivery-point data.

Geocodio is a geocoder that also standardizes addresses and enriches them with coordinates and dozens of data fields. Geocodio is not CASS-certified, but with Geocodio’s USPS ZIP+4 append, you can see whether an address is an exact match for a USPS address and get the ZIP+4, RDI, and other indicators.

Here is an honest side-by-side, including the places where the USPS Addresses API is the stronger choice:

When is the USPS Addresses API the right choice?

Choose the USPS Addresses API (or another CASS-certified provider) when deliverability for physical mail is the point. Geocodio is not CASS-certified and does not do delivery-point validation.

Choose USPS APIs when:

• You need CASS certification to qualify for USPS presort or automation postage discounts.

• You need delivery-point validation (DPV) to confirm a specific address is deliverable before you mail to it.

• You rely on USPS mail attributes like delivery type, seasonal delivery, drop-and-count, or LACS conversions.

• Your workflow is built around physical mail and you want the data straight from USPS.

When is Geocodio a good fit?

If you were using the USPS API to clean up and geocode addresses and get usable data out the other side, that is squarely what Geocodio does.

Choose Geocodio vs USPS when:

• You need to clean, standardize, and geocode a lot of addresses, by spreadsheet or API.

• The USPS data you need is RDI, ZIP+4, and other data fields included in Geocodio’s USPS ZIP+4 append.

• You want coordinates plus Census tracts, FIPS codes, demographics, Congressional and state legislative districts, school districts, timezones, and more in one request.

• You want to store and reuse your results without restrictions.

• You work across the US, Canada, Mexico, or the UK.

Your first 2,500 lookups a day are free, with no credit card required. See Geocodio pricing for paid plans.