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Best USPS Addresses API Alternatives in 2026

Updated

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

  1. 1
    Addrex Address Validation API Free plan apiWeb $39/mo7.3
    USPS Addresses API vs Addrex Address Validation API
  2. 2
    Melissa Global Address Verification Free plan apiLinuxself-hostedWebWin $40/mo7.3
    USPS Addresses API vs Melissa Global Address Verification
  3. 3
    Lob Address Verification Free plan apiWeb $260/mo7.2
    USPS Addresses API vs Lob Address Verification
  4. 4
    Byteplant Address Validator Free trial apiWebWin 6.9
    USPS Addresses API vs Byteplant Address Validator
  5. 5
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo6.9
    USPS Addresses API vs PostGrid Address Verification
  6. 6
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 6.8
    USPS Addresses API vs Hopewiser Address Validation
  7. 7
    Informatica Product 360 apiself-hostedWebWin 6.8
    USPS Addresses API vs Informatica Product 360
  8. 8
    Precisely EnterWorks apiWebWin 6.8
    USPS Addresses API vs Precisely EnterWorks
  9. 9
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo6.7
    USPS Addresses API vs Smarty Address Verification
  10. 10
    Addressfinder Free trial apiWeb A$19/mo6.6
    USPS Addresses API vs Addressfinder
  11. 11
    AFD Postcode WebWin 5.1
    USPS Addresses API vs AFD Postcode
  12. 12
    Experian Address Validation Web 5.1
    USPS Addresses API vs Experian Address Validation
  13. 13
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 5.1
    USPS Addresses API vs Oracle PeopleSoft Campus Solutions Financial Aid
  14. 14
    PostalUp Web 5.1
    USPS Addresses API vs PostalUp
  15. 15
    PostNL Address Validation API Web 5.1
    USPS Addresses API vs PostNL Address Validation API
  16. 16
    Precisely Data Enrichment Web 5.1
    USPS Addresses API vs Precisely Data Enrichment
  17. 17
    Addressr Web 5.0
    USPS Addresses API vs Addressr
  18. 18
    AddressZen Web 5.0
    USPS Addresses API vs AddressZen
  19. 19
    DOTS Address Validation – US 3 5.0
    USPS Addresses API vs DOTS Address Validation – US 3
  20. 20
    Fetchify Free trial apiWeb £25/mo5.0
    USPS Addresses API vs Fetchify

USPS Addresses API alternatives compared

#PlatformScoreFree planFromRuns on
1Addrex Address Validation API7.3Free plan$39/moAPI, Web
2Melissa Global Address Verification7.3Free plan$40/moAPI, Linux, self-hosted, Web, Windows
3Lob Address Verification7.2Free plan$260/moAPI, Web
4Byteplant Address Validator6.9No—API, Web, Windows
5PostGrid Address Verification6.9No$18/moAPI, self-hosted, Web
6Hopewiser Address Validation6.8No—API, Linux, self-hosted, Web, Windows
7Informatica Product 3606.8No—API, self-hosted, Web, Windows
8Precisely EnterWorks6.8No—API, Web, Windows
9Smarty Address Verification6.7No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
10Addressfinder6.6NoA$19/moAPI, Web
11AFD Postcode5.1No—Web, Windows
12Experian Address Validation5.1No—Web
13Oracle PeopleSoft Campus Solutions Financial Aid5.1No—Web, Windows
14PostalUp5.1No—Web
15PostNL Address Validation API5.1No—Web
16Precisely Data Enrichment5.1No—Web
17Addressr5.0No—Web
18AddressZen5.0No—Web
19DOTS Address Validation – US 35.0No——
20Fetchify5.0No£25/moAPI, Web
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Questions about USPS Addresses API alternatives

What is the best alternative to USPS Addresses API?

Addrex Address Validation API, number 1 in address verification software with a score of 7.3 out of 10. The others here: Melissa Global Address Verification, Lob Address Verification, Byteplant Address Validator and 16 more.

What is the best free alternative to USPS Addresses API?

Addrex Address Validation API is the best-ranked alternative with a free plan. 3 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.