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Best USPS Addresses API Alternatives in 2026

Updated

20 tools from address verification software ranked against USPS Addresses API on the same published basis.

  1. 1
    Melissa Global Address Verification Free plan apiLinuxself-hostedWebWin $40/mo7.6
    USPS Addresses API vs Melissa Global Address Verification
  2. 2
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo7.4
    USPS Addresses API vs Smarty Address Verification
  3. 3
    AddressZen Free plan apiextensionWeb Free7.1
    USPS Addresses API vs AddressZen
  4. 4
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 7.1
    USPS Addresses API vs Hopewiser Address Validation
  5. 5
    Lob Address Verification Free plan apiWeb $260/mo7.1
    USPS Addresses API vs Lob Address Verification
  6. 6
    Byteplant Address Validator Free trial apiWebWin 7.0
    USPS Addresses API vs Byteplant Address Validator
  7. 7
    Addrex Address Validation API Free plan apiWeb $39/mo6.9
    USPS Addresses API vs Addrex Address Validation API
  8. 8
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo6.8
    USPS Addresses API vs PostGrid Address Verification
  9. 9
    Informatica Product 360 apiself-hostedWebWin 6.7
    USPS Addresses API vs Informatica Product 360
  10. 10
    PostNL Address Validation API Free plan apiWeb Free6.7
    USPS Addresses API vs PostNL Address Validation API
  11. 11
    Precisely EnterWorks apiWebWin 6.6
    USPS Addresses API vs Precisely EnterWorks
  12. 12
    Addressfinder Free trial apiWeb A$19/mo6.5
    USPS Addresses API vs Addressfinder
  13. 13
    Fetchify Free trial apiWeb £25/mo6.5
    USPS Addresses API vs Fetchify
  14. 14
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 6.2
    USPS Addresses API vs Oracle PeopleSoft Campus Solutions Financial Aid
  15. 15
    AFD Postcode WebWin 5.9
    USPS Addresses API vs AFD Postcode
  16. 16
    Experian Address Validation Web 5.9
    USPS Addresses API vs Experian Address Validation
  17. 17
    Precisely Data Enrichment Web 5.8
    USPS Addresses API vs Precisely Data Enrichment
  18. 18
    Addressr Web 5.7
    USPS Addresses API vs Addressr
  19. 19
    PostalUp Free plan apiWeb $1.58/mo5.7
    USPS Addresses API vs PostalUp
  20. 20
    UPU POST*CODE API Web 5.7
    USPS Addresses API vs UPU POST*CODE API

USPS Addresses API alternatives compared

#ToolScoreFree planFromRuns on
1Melissa Global Address Verification7.6Free plan$40/moAPI, Linux, self-hosted, Web, Windows
2Smarty Address Verification7.4No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
3AddressZen7.1Free planFreeAPI, Browser, Web
4Hopewiser Address Validation7.1No—API, Linux, self-hosted, Web, Windows
5Lob Address Verification7.1Free plan$260/moAPI, Web
6Byteplant Address Validator7.0No—API, Web, Windows
7Addrex Address Validation API6.9Free plan$39/moAPI, Web
8PostGrid Address Verification6.8No$18/moAPI, self-hosted, Web
9Informatica Product 3606.7No—API, self-hosted, Web, Windows
10PostNL Address Validation API6.7Free planFreeAPI, Web
11Precisely EnterWorks6.6No—API, Web, Windows
12Addressfinder6.5NoA$19/moAPI, Web
13Fetchify6.5No£25/moAPI, Web
14Oracle PeopleSoft Campus Solutions Financial Aid6.2No—Web, Windows
15AFD Postcode5.9No—Web, Windows
16Experian Address Validation5.9No—Web
17Precisely Data Enrichment5.8No—Web
18Addressr5.7No—Web
19PostalUp5.7Free plan$1.58/moAPI, Web
20UPU POST*CODE API5.7No—Web
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Questions about USPS Addresses API alternatives

What is the best alternative to USPS Addresses API?

Melissa Global Address Verification, number 1 in address verification software with a score of 7.6 out of 10. The others here: Smarty Address Verification, AddressZen, Hopewiser Address Validation and 16 more.

What is the best free alternative to USPS Addresses API?

Melissa Global Address Verification is the best-ranked alternative with a free plan. 6 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.