Based on 1,099,363 Harris County records

Houston Property Assessments by ZIP Code

Color shows the share of records flagged by the stored assessment comparison. A ZIP-level flag is not proof that your home is overassessed. Check your own address for a property-specific result before considering a paid report.

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under 20%20 to 35%35 to 50%over 50% of records flagged

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<p style="font-size:12px;">Map data: <a href="https://appealmytax.dev/texas/houston-map">Houston property tax assessments by ZIP, AppealMyTax</a></p>

Source and methodology: this map displays stored comparison flags aggregated by ZIP code from Harris Central Appraisal District public records. It is a screening snapshot, not a count of proven appeal cases or tax savings. The current calculator checks property-level evidence separately, so a flagged ZIP can still produce a result with no supported overassessment claim for your home. ZIP boundaries are U.S. Census Bureau ZCTAs. Source: HCAD. Data last refreshed June 10, 2026.