# IRS Income by ZIP Code API – Tax Return Statistics 2011-2023: findings

3 posts built from the [IRS Income by ZIP Code API – Tax Return Statistics 2011-2023](https://pushbuild.com/apis/irs-income-by-zip.html).

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People & income · 2026-11-07

### [More than a quarter of Mississippi tax returns claim the Earned Income Tax Credit](https://pushbuild.com/apis/analysis/eitc-share-by-state/)

26.9% of Mississippi returns claimed the EITC in 2023, the highest share of any state; Louisiana was 24.2%, Georgia…

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People & income · 2026-11-07

### [East Austin's average income tripled in ten years](https://pushbuild.com/apis/analysis/fastest-income-growth-zip-codes/)

Average AGI in Austin's 78721 rose from $29,359 in 2013 to $90,344 in 2023 (+208%), and in 78702 from $41,310 to $122,883. Palm Beach (+315%) grew…

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People & income · 2026-11-07

### [The average tax return in Palm Beach 33480 reports $2.7 million](https://pushbuild.com/apis/analysis/highest-income-zip-codes-2023/)

ZIP 33480 (Palm Beach, Florida) had the highest average adjusted gross income in 2023: $2,746,444 across 5,900 returns, half of it from capital…

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As of 2026-11-07. Source: https://pushbuild.com/apis/analysis/api/irs-income-by-zip/