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Metadapi Blog

Articles that help developers get up and running quickly on all of the API's available on Metadapi.

IRS 1040 Tax Data Mapping to Zip Code API

Mapping IRS 1040 Tax Data with the Zip Code API: A Complete Guide

Understanding how income and demographic data align across geographic regions is key to building smarter insights — and that’s exactly what the Zip Code API delivers. In this guide, we explain how the API connects directly to publicly available IRS 1040 tax return data, providing a clear mapping between individual return fields and zip code–level metrics