Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

Condo Manager
PropertyBoss
Raamp
STRATAFOLIO
Bixby
Entrata
Oscar Corporate Housing Software
Get the apartment resident portal app solution that both renters and multifamily property management companies love. Free demo.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | login.loftliving.com |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
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What each product offers, as listed by its team.

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When comparing ZIP Code API and ActiveBuilding, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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The ultimate property management software for managers, Condo Manager features accounting, management and communication software that has been continuously improved, optimized and updated for more than 25 years.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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PropertyBoss is a lease-based approach to property management allowing users to follow residents from lead through lease.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Raamp is a property management software that leverages real state managers to have robust tools and functionalities to perform their day-to-day activities.
Compare Raamp to ZIP Code API or ActiveBuilding: