Sales Tax Rate by ZIP Code

How ZIP-code sales tax lookup actually works

A combined sales tax rate is never a single number set by one government. It's a stack: a state rate, layered with whatever a county, city, and special district (transit authority, stadium district, tourism improvement district) each choose to add on top. ZIP codes were built by the Postal Service to route mail efficiently, not to follow city or county lines — so a single ZIP frequently straddles two or more of those taxing boundaries.

That's the honest limitation behind every ZIP-based sales-tax tool, including this one: most of the time a ZIP maps cleanly to one rate, but where it doesn't, a tool that reports only a single number is quietly wrong for some of the addresses inside that ZIP. This calculator surfaces the split instead of hiding it — when the official data shows more than one rate inside a ZIP, both ends of the range are shown alongside the headline figure.

Where the data comes from

The Streamlined Sales and Use Tax Agreement (SSUTA) requires each member state with local sales taxes to maintain rate and boundary databases (SSUTA §§305 and 307), and the Governing Board publishes the resulting "Rate and Boundary" files. Those files are the source for every ZIP-level figure on this page; nothing here is scraped, estimated, or interpolated. States refresh their files ahead of each calendar quarter and post corrections mid-quarter when a local jurisdiction changes its rate. The dataset behind this calculator was last pulled 2026-11-02.

Coverage: the 24 Streamlined Sales Tax states

ZIP-level ranges and rates are exact for these states — enter any ZIP inside them and the calculator resolves it against the official boundary file.

Want the full picture for one state instead of a single ZIP? These pages list every city, county, and district rate we derive from the same official files:

• Arkansas sales tax rates
• Georgia sales tax rates
• Iowa sales tax rates
• Kansas sales tax rates
• Minnesota sales tax rates
• North Carolina sales tax rates
• North Dakota sales tax rates
• Nebraska sales tax rates
• Nevada sales tax rates
• Ohio sales tax rates
• Oklahoma sales tax rates
• South Dakota sales tax rates
• Tennessee sales tax rates
• Utah sales tax rates
• Vermont sales tax rates
• Washington sales tax rates
• Wisconsin sales tax rates
• West Virginia sales tax rates
• Wyoming sales tax rates

Some states charge one statewide rate with few or no local add-ons, so a city table would repeat a single number. Their pages cover what is exempt, how cars are taxed and the local exceptions instead:

• Massachusetts sales tax rate
• Connecticut sales tax rate
• Rhode Island sales tax rate
• Maine sales tax rate
• Maryland sales tax rate
• Washington DC sales tax rate
• Virginia sales tax rate
• Pennsylvania sales tax rate
• Michigan sales tax rate
• Indiana sales tax rate
• Kentucky sales tax rate
• Mississippi sales tax rate
• Hawaii sales tax rate
• Idaho sales tax rate

For everything outside those 24 states, SST doesn't publish an equivalent free ZIP-level file, so the calculator falls back to the state's statewide base rate and labels it explicitly as a base rate only. It never invents a local add-on to fill the gap. For several non-SST states we publish full local rate tables from each state's own official source instead — see California sales tax rates by city (CDTFA), Texas sales tax rates by city (Texas Comptroller), Florida sales tax rates by county (Florida DOR), Arizona sales tax rates by city (Arizona DOR), Illinois sales tax rates by city (Illinois DOR), New York sales tax rates by county (New York Tax Department), Colorado sales tax rates by city (Colorado DOR), Missouri sales tax rates by city (Missouri DOR), Alabama sales tax rates by city (Alabama DOR) and South Carolina sales tax rates by city (South Carolina DOR). For state-level reference pages, see California, Florida, and Texas. Two more non-SST states have too few local rates for a table, so the calculator states them directly: Pennsylvania is 6% everywhere except Allegheny County (7%) and Philadelphia (8%) (Pennsylvania DOR), and Virginia is 5.3% except 6% in Central Virginia, Hampton Roads and Northern Virginia, 6.3% in 8 other localities and 7% in James City County, Williamsburg and York County (Virginia Tax).

Worked examples

Three real ZIP codes, computed live from the official dataset — a plain single-rate hit, a second plain hit, and a ZIP that genuinely spans more than one rate.

84101 is the range case: the headline 7.450% is the lowest combination present in the ZIP, while some addresses inside it are taxed up to 8.450%. It also carries a separate groceries/drugs rate of 3.000%, lower than the general rate.

Sources

• IRS — Sales Tax Deduction Calculator
• NY Publication 718 — Sales and Use Tax Rates by Jurisdiction
• Washington DOR — Local Sales and Use Tax Rates
• Tax Foundation — 2025 State and Local Sales Tax Rates