Address verification cost calculator
How many US addresses do you check per month? We'll estimate the monthly bill from each vendor's published prices.
Prices checked from each vendor's public pricing page. Prices change; confirm on the vendor's site before you buy.
Estimated monthly cost for 500,000 checks
| Vendor / plan | Est. per month | How we got it |
|---|---|---|
| USPS Addresses API | $2,000 | Plus license, funded payment account and USPS countersignature. US only; use restricted by license. |
| Lob | $4,500 | Cheaper of: $25/mo incl. 1,000 + $0.025 each, or $450/mo incl. 50,000 + $0.009 each. |
| Melissa (rough) | $5,250 – $6,000 | Assumes 3 credits per US address (Melissa FAQ) at $350/100K to $40/10K credits. The pricing tile also says "10 credits per address"; if so, about 3.3× higher. Up to 1,000 free credits/month not deducted. |
| Google Address Validation (Pro) | $7,055 | 5,000 free per month, then graduated per-1,000 tiers. |
| PostGrid (Standard $18 plan) | $9,978 | $18 includes 2,000; $0.02 each extra. Bigger plans exist but their prices were not published on the page. |
| EasyPost (standalone) | $10,000 | $0.02 per domestic check. Free with each label you buy. |
| Shippo | $10,000 | 2¢ per US validation (API Starter). |
| Loqate Address Verify | $20,500 – $30,000 | 4.1¢ ($1,000 pack) to 6¢ ($100 pack) per lookup. Prepaid packs; credits expire after 12 months. |
| Smarty (annual plan, per month) | Contact sales | Above the largest published annual plan (2M/yr). Contact sales. |
| Smarty (monthly plan) | Contact sales | Above the largest published monthly plan (170K). Contact sales. |
Read this before you trust the numbers
- These are estimates from published list prices on October 2, 2026. They leave out taxes, discounts, minimums you may hit, and any setup fees not on the price page.
- US checks only. International checks cost roughly 3–5× more; see each vendor page.
- Not included because prices aren't published: Experian, Precisely. Radar starts at $2.00 per 1,000 but needs an annual contract.
- Geocoders (Geoapify, Mapbox, HERE, Geocodio) are cheaper but don't check postal deliverability, so they're not in this list.
- The calculator runs on our server from the number you type. Nothing is stored. See privacy.