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Best USPS Addresses API Alternatives in 2026

Updated

20 apps 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/mo6.5
    USPS Addresses API vs Melissa Global Address Verification
  2. 2
    Addrex Address Validation API Free plan apiWeb $39/mo6.4
    USPS Addresses API vs Addrex Address Validation API
  3. 3
    AddressZen Free plan apiextensionWeb Free6.3
    USPS Addresses API vs AddressZen
  4. 4
    Lob Address Verification Free plan apiWeb $260/mo6.3
    USPS Addresses API vs Lob Address Verification
  5. 5
    PostNL Address Validation API Free plan apiWeb Free6.3
    USPS Addresses API vs PostNL Address Validation API
  6. 6
    Byteplant Address Validator Free trial apiWebWin 5.5
    USPS Addresses API vs Byteplant Address Validator
  7. 7
    Hopewiser Address Validation Free trial apiLinuxself-hostedWebWin 5.5
    USPS Addresses API vs Hopewiser Address Validation
  8. 8
    PostGrid Address Verification Free trial apiself-hostedWeb $18/mo5.4
    USPS Addresses API vs PostGrid Address Verification
  9. 9
    Smarty Address Verification Free trial AndroidapiiOSLinuxMac $46/mo5.3
    USPS Addresses API vs Smarty Address Verification
  10. 10
    AFD Postcode WebWin 5.2
    USPS Addresses API vs AFD Postcode
  11. 11
    Experian Address Validation Web 5.2
    USPS Addresses API vs Experian Address Validation
  12. 12
    PostalUp Free plan apiWeb $1.58/mo5.2
    USPS Addresses API vs PostalUp
  13. 13
    Precisely Data Enrichment Web 5.2
    USPS Addresses API vs Precisely Data Enrichment
  14. 14
    Addressr Web 5.1
    USPS Addresses API vs Addressr
  15. 15
    Informatica Product 360 apiself-hostedWebWin 5.1
    USPS Addresses API vs Informatica Product 360
  16. 16
    Precisely EnterWorks apiWebWin 5.1
    USPS Addresses API vs Precisely EnterWorks
  17. 17
    UPU POST*CODE API Web 5.1
    USPS Addresses API vs UPU POST*CODE API
  18. 18
    Oracle PeopleSoft Campus Solutions Financial Aid WebWin 5.0
    USPS Addresses API vs Oracle PeopleSoft Campus Solutions Financial Aid
  19. 19
    Addressfinder Free trial apiWeb A$19/mo4.9
    USPS Addresses API vs Addressfinder
  20. 20
    Fetchify Free trial apiWeb £25/mo4.9
    USPS Addresses API vs Fetchify

USPS Addresses API alternatives compared

#AppScoreFree planFromRuns on
1Melissa Global Address Verification6.5Free plan$40/moAPI, Linux, self-hosted, Web, Windows
2Addrex Address Validation API6.4Free plan$39/moAPI, Web
3AddressZen6.3Free planFreeAPI, Browser, Web
4Lob Address Verification6.3Free plan$260/moAPI, Web
5PostNL Address Validation API6.3Free planFreeAPI, Web
6Byteplant Address Validator5.5No—API, Web, Windows
7Hopewiser Address Validation5.5No—API, Linux, self-hosted, Web, Windows
8PostGrid Address Verification5.4No$18/moAPI, self-hosted, Web
9Smarty Address Verification5.3No$46/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
10AFD Postcode5.2No—Web, Windows
11Experian Address Validation5.2No—Web
12PostalUp5.2Free plan$1.58/moAPI, Web
13Precisely Data Enrichment5.2No—Web
14Addressr5.1No—Web
15Informatica Product 3605.1No—API, self-hosted, Web, Windows
16Precisely EnterWorks5.1No—API, Web, Windows
17UPU POST*CODE API5.1No—Web
18Oracle PeopleSoft Campus Solutions Financial Aid5.0No—Web, Windows
19Addressfinder4.9NoA$19/moAPI, Web
20Fetchify4.9No£25/moAPI, 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 6.5 out of 10. The others here: Addrex Address Validation API, AddressZen, Lob Address Verification 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 free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.