6 free alternatives to Zipcodebase

This free tier gives up to 100 requests per day for development and small projects. It is a simple fit if you need country, state, city, and postal-code lookups without much setup, and the API includes the kinds of location data Zipcodebase users usually want. The main appeal is that it is request-based rather than tied to a monthly bundle, which can be easier for light everyday testing. It falls short of Zipcodebase on throughput, since 100 requests per day is a smaller practical ceiling than 5,000 searches per month. Switch here if you want a compact lookup API for small builds and can live with a stricter daily cap.

• Beats Zipcodebase: Simple daily request allowance for small projects
• Falls short: Much lower overall request volume
• Who should switch: Choose this if you only need light development traffic and can work within a daily cap.

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The free tier includes 30,000 calls per month, 1 request per second, commercial use, attribution required, and community support. That gives you a much larger monthly allowance than Zipcodebase, while still covering geocoding-style workloads that need steady API access. It is better suited to apps that will outgrow a 5,000-search ceiling quickly. Where it falls short is concurrency and ease of use for teams that want less friction: the free plan still caps you at 1 request per second and requires attribution. Switch if your main need is more monthly volume and you can accept attribution.

• Beats Zipcodebase: Higher monthly call volume
• Falls short: Attribution is required
• Who should switch: Pick this if request volume matters most and attribution is acceptable.

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This free offering is built for testing and gives 2,500 geocoding API requests per day, a 1 request per second limit, spreadsheet uploads up to 100 rows, permanent data storage during testing, and one API key. It is a stronger match if you want a broader geocoding workflow instead of just postal-code lookup, especially when you need spreadsheet-based testing or stored test data. It falls short of Zipcodebase on simplicity for production-style usage because it is clearly framed as a testing-oriented trial and limits you to one API key. Switch if you are validating geocoding features and need richer test tooling.

• Beats Zipcodebase: Spreadsheet uploads and test-data features
• Falls short: Only one API key
• Who should switch: Use this when you are still testing geocoding workflows and want more built-in test helpers.

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The free plan includes 3,000 credits per day, multiple API keys, limited commercial use, up to 5 requests per second, isochrones up to 15 minutes, isodistances up to 10 km, and best-effort support. That makes it attractive if you need a broader location platform, not just postal code lookup, because it covers routing-adjacent and reachability features too. It is stronger than Zipcodebase on request rate and multi-key support, but the daily credit cap is still a hard ceiling and commercial use is limited. Switch if your app needs more geospatial features and you want a free plan with multiple keys.

• Beats Zipcodebase: Multiple API keys and broader location features
• Falls short: Limited commercial use
• Who should switch: Choose this if you need more than postal-code lookup and want a wider geospatial toolkit.

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The free tier includes 2,500 API requests daily, forward geocoding, reverse geocoding, IP and HTTP restrictions, and email support. It is a good fit if your app needs straightforward geocoding in both directions rather than postcode lookups alone. The restrictions can also be useful for locking down a lightweight integration. It falls short of Zipcodebase on overall flexibility because the request ceiling is lower and the free plan is centered on day-based usage rather than a monthly pool. Switch if you want a clean geocoding API with both forward and reverse search built in.

• Beats Zipcodebase: Forward and reverse geocoding in the free plan
• Falls short: Lower daily request ceiling
• Who should switch: Pick this if your app needs bidirectional geocoding more than postal-code search alone.

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The free tier includes up to 500 monthly mailings, up to 50 checks per month, 1 user, 10 HTML templates, 1 webhook, 10,000 address book entries, address validation, metadata tagging, mailing history, standard mail tracking, a template editor, Zapier integration, Stripe integration, one local delivery network, email support, and chat support. It is not a direct Zipcodebase replacement, but it is useful if your real need is address workflows around physical mail rather than pure lookup volume. It beats Zipcodebase on workflow depth and integrated mail operations, but it is far less relevant if you only want postal-code API searches. Switch here only if your project has moved into mailing and address operations.

• Beats Zipcodebase: Much broader address and mailing workflow
• Falls short: Not a direct postal-code API substitute
• Who should switch: Use this if your problem is address operations and mail workflows, not just ZIP lookup.

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