New Mexico Sales Tax Rates: Union County

New Mexico:

Union County, New Mexico Sales Tax Rate 2026 Up to 7.875%

Union County Has No County-Level Sales Tax

While many counties do levy a countywide sales tax, Union County does not. The New Mexico sales tax of 4.875% applies countywide. Some cities and local governments in Union County collect additional local sales taxes, which can be as high as 3%.

Here's how Union County's maximum sales tax rate of 7.875% compares to other counties around the United States:

Lower maximum sales tax than 74% of New Mexico counties
Higher maximum sales tax than 54% of counties nationwide

Last updated June 2026

Tax Rates By City in Union County, New Mexico

The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. New Mexico has a 4.875% sales tax and Union County collects an additional N/A, so the minimum sales tax rate in Union County is 4.875% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Union County, including all local taxes.

City	Sales Tax Rate	Tax Jurisdiction
Clayton	7.875%	Clayton
Amistad	5.875%	Harding
Capulin	5.8125%	Union
Des Moines	7.5%	Des Moines
Folsom	7.25%	Folsom
Gladstone	5.8333%	Colfax
Grenville	7.25%	Grenville
Sedan	5.8125%	Union

New Mexico Sales Tax Rates by Zip Code:

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Union County, New Mexico has a maximum sales tax rate of 7.875% and an approximate population of 2,441.

Sales tax rates in Union County are determined by seven different tax jurisdictions, Clayton, Colfax, Des Moines, Folsom, Grenville, Harding and Union.

Back to New Mexico Sales Tax Handbook Sales tax rates for Union County are current as of June 2026