How PostalDataPI's Pricing Compares

Total monthly cost at common volumes

PostalDataPI is a flat $0.000028 per query at every volume — no tiers, no minimums, no contracts. Other vendors use tiered or per-API-call pricing, which produces different totals at different volumes.

PostalDataPI cells are computed from the flat $0.000028 rate × query volume. Other cells are taken from the vendor's public pricing pages on the verification date.

Per-tier comparison: Zipcodebase

For readers comparing PostalDataPI to a specific Zipcodebase plan, here is the same data laid out per their tier names. The right column shows what PostalDataPI would cost for the same query allowance at our flat rate.

Why PostalDataPI bills this way

PostalDataPI uses a single flat per-query rate because the operational cost of serving one query is the same as serving the millionth. Tiered pricing exists primarily to extract more revenue from buyers who can't shop around — small businesses pay the highest per-query rates, large enterprises negotiate down. We don't do that.

A new account gets 1,000 free queries on signup with no credit card required. After that, $0.000028 per query, billed against a prepaid balance you top up at any time (minimum $5). No subscriptions, no commitments, no sales calls.

For a longer reflection on the principle: Why PostalDataPI Bills the Way It Does.

Notes & Sources

• PostalDataPI: $0.000028 per query, flat, all volumes. New accounts include 1,000 free queries; no credit card required. Pricing locked at this rate since launch and currently unchanged. postaldatapi.com/pricing.
• Zipcodebase: 7-tier monthly pricing from Free ($0, 5K queries) to Premium ($3,000, 70M queries). Verified at zipcodebase.com/pricing on 2026-05-02.
• Google Geocoding API: $5 per 1,000 requests at standard rate; volume discounts apply at scale ($4 per 1,000 above 100K monthly). Pricing at developers.google.com/maps/billing-and-pricing/pricing.Note: Google's API is geocoding-broad (includes address parsing, places, etc.) — it's more capable than a postal-code API but priced accordingly. The comparison is apples-to-oranges; we list it because many developers default to Google for postal-code lookup before realizing a focused API exists.
• Smarty (US ZIP Code API): Professional plan starts at $50/month, 42-day free trial covering 1,000 lookups, no credit card required for trial. Higher tiers are custom / contact sales. Verified at smarty.com/pricing.
• Enterprise vendors (Loqate, Melissa, Experian, etc.) generally do not publish per-query rates. They quote based on annual contract value, minimum commits, and bundled feature sets. We list them as “Contact sales” because that is, factually, the only public posture they offer.
• What this page is not: A complete competitive analysis. Vendors differ on coverage, freshness, response time, SLA, support, and feature scope (address validation vs. postal code lookup vs. full geocoding). This page is about price. Other dimensions are documented across our blog and API reference.